CN115909663A - Railway line geological disaster early warning system adopting pressure and buoyancy omnibearing monitoring - Google Patents
Railway line geological disaster early warning system adopting pressure and buoyancy omnibearing monitoring Download PDFInfo
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Abstract
The invention discloses a railway line geological disaster early warning system adopting pressure and buoyancy omnibearing monitoring, which comprises a disaster monitoring module, a disaster occurrence judging module, a signal processing and converting module and a disaster judging module; the disaster monitoring module comprises a flood disaster monitoring device and an omnibearing debris flow disaster monitoring device and is used for monitoring the track water accumulation condition and the invasion of foreign matters; the disaster occurrence judging module is used for judging whether a disaster occurs or not by using a rail disaster warning platform and signal mechanism hardware equipment; the signal processing and converting module is used for modulating, demodulating and analog-to-digital converting analog signals and judging the types and position signals of the sent alarm signals through the signals; the disaster distinguishing module is used for distinguishing the occurrence condition of the disaster and sending out an alarm signal to deal with the two disasters. The invention realizes the early warning of the torrential flood and the debris flow on the road sections with multiple accidents, such as tunnels or tunnel mouths, solves the problems of single monitoring function and limited monitoring direction, and ensures the safe operation of railways in the sections with multiple accidents.
Description
Technical Field
The invention belongs to the field of disaster prevention and reduction of high-speed railways, and particularly relates to a railway line geological disaster early warning system based on pressure and buoyancy omnibearing monitoring.
Background
Debris flow and flood are common natural disasters with serious harmfulness in mountainous areas, and in mountain areas of China, debris flow disasters endanger the life safety of people, restrict economic development, destroy environmental ecology and stability, and aim to reduce the threat brought by disasters. Debris flow is a sudden geological disaster phenomenon, and often happens in the area that mountain area landform is more precipitous, in case the outflow of continuous heavy storm or a large amount of ice melt water takes place, the flood that forms after the soil massif that will contain grit and soft is saturated and diluted, and when a large amount of grit in the debris flow gushes into the tunnel pipeline, make underground drainage system block easily and lead to the rainy season rainwater to flow backward, thereby take place flood disasters, two kinds of natural disasters often take place in the region that mountain area and riverbed intersect in turn, therefore in case take place to be difficult to differentiate the situation that the calamity took place, rescue often very tricky.
The development of railways in China faces a new era of high-speed railway construction in China, and the high-speed railway network with the largest scale, the longest operation mileage, the largest passenger flow and the highest modernization degree in the world is the China high-speed railway network. However, in the case of such a high-speed vehicle, once an uncontrollable event or natural disaster occurs on the driving road condition of the vehicle, the vehicle body is often dangerous because the vehicle body cannot bear severe impact. Therefore, as a preferred vehicle in the future, how to operate related infrastructure to monitor emergency and take disaster prevention and reduction measures is an urgent priority for ensuring passenger safety and other problems in railway research industry. The terrain of China is high in west and low in east and is distributed in a step shape, the western terrain is mainly mountainous regions and basin plateaus, so that the countries have the defects that most of the railways of Cheng Lan and Sichuan Tibetan railways are in the hard mountain areas, the railways often pass through the areas where the mountain areas and river beds are intersected, the geology is complex, high-risk disasters such as karst, gas, high ground stress, faults, water level mutation, mud burst, debris flow and the like frequently occur, the mountain areas are provided with multiple tunnels, once the geological disasters occur and the disasters are not accurately and timely monitored, the trains are trapped in places with multiple accidents, and even the life safety of passengers and residents along the lines is threatened.
Currently, high-speed rail wireless communication technology is receiving great attention from the global academic and industrial circles. The national railway group of China is put forward in the new era compendium of advanced planning of strong-country railway of traffic, and by 2035 years, intelligent high-speed railways are built first and intelligent railways are realized quickly. Future railway development puts higher demands on seamless high data rate communication, signal coverage and the like. With the continuous increase of intelligent high-speed rail services and the continuous improvement of application requirements, the application of a high-speed rail mobile communication system in the field of disaster prevention early warning signals also becomes a crucial problem, and the reliable transmission of continuous online signals with high data rate at high moving speed is realized while disaster prevention early warning is performed. In the process of signal transmission, no matter wired communication technology or wireless communication technology is utilized, the method cannot be completely applied to all occasions. Therefore, in order to effectively overcome the limitations of the two technologies, the hardware device for transmitting the key signals in the disaster early warning system needs to strengthen the fusion application of the wired technology and the wireless technology, and improve the signal transmission of the whole system and the application range and the adaptability thereof.
Disclosure of Invention
In view of the problems in the operation process in the prior art, the invention provides a railway line geological disaster early warning system based on pressure and buoyancy omnibearing monitoring.
The invention relates to a railway line geological disaster early warning system adopting pressure and buoyancy omnibearing monitoring, which comprises a disaster monitoring module, a disaster occurrence judging module, a signal processing and converting module and a disaster judging module.
The disaster monitoring module comprises a flood disaster monitoring device and an all-dimensional debris flow disaster monitoring device and is used for monitoring the accumulated water condition on the track and monitoring whether foreign matters invade from each direction on the steel rail on one side of the mountain body or not to judge the disaster condition of the geographical environment where the steel rail is located. The disaster occurrence judgment module uses a rail disaster warning platform and signal mechanism hardware equipment and is used for recording analog signals generated by triggering of the monitoring device and the geographic position of the device and sending warning signals to judge whether disasters occur or not. The signal processing and converting module is used for modulating and demodulating and converting analog signals and judging the types and position signals of the sent alarm signals through the signals. The disaster distinguishing module uses a Manchester coding signal receiver and is used for analyzing a level signal formed by binary coding to distinguish the occurrence condition of disaster and send an alarm signal to deal with two kinds of disasters.
Further, flood disaster monitoring devices includes square float and force sensor, and square float is passed infiltration well lid, spring by the string and is connected with force sensor, and it is sealed by smooth anti-corrosion metal baffle around the square float and the top, and the below is connected with infiltration well lid, guarantees that square float can not lead to force sensor to trigger because of the foreign matter collides. When the area has natural disasters such as mountain floods and the like to cause the underground water level to rise, underground water seepage flows backwards to the inside of the device to enable the square floater to float upwards to generate pulling force, and the pulling force sensor below can timely and accurately detect the buoyancy change from the square floater.
The upper part of the omnibearing debris flow disaster situation monitoring device is provided with a multidirectional mud seepage hole, and the lower part of the omnibearing debris flow disaster situation monitoring device is provided with a smooth pressure baffle plate and is connected with a pressure sensor through a spring. Isolated rainwater is kept apart by the anticorrosion metal baffle above the device, guarantees that the device is inside can not lead to smooth baffle to push down and produce pressure because of ponding. When the natural disasters like debris flow or mountain landslide occur in the area, foreign matters such as silt invade the steel rail from all directions and are pressed into the upper part of the smooth pressure baffle through the mud seepage hole, the pressure sensor at the lower part can timely and accurately detect the pressure change from the baffle.
Furthermore, the disaster occurrence judgment module is connected with the analog signal controller through the tension sensor and the pressure sensor, and respectively records the sudden change of the continuously changing physical quantity generated by the tension or the pressure, and if the sudden change exceeds a detection critical value, an alarm signal and a sudden change signal are transmitted into the signal processing and converting module. The signal processing and converting module comprises a signal converter and a ground control tower, wherein the signal converter converts an analog signal into a digital signal through A/D conversion, binary numbers generated by quantization are arranged together by using Manchester coding to form a sequential pulse sequence, and the corresponding digital signal is transmitted to the disaster judging module. The disaster distinguishing module comprises a coding analysis platform, a main control module and a wireless signal transmission module, and the wireless signal transmission module adopts an LoRa communication technology to carry out unauthorized spectrum communication transmission.
When mountain foreign matters such as debris flows slide to the interior of the steel rail two-side entering device from the side, the smooth pressure baffle plate is pressed, and the pressure sensor can only sense the invasion of the foreign matters in the side direction, so that the foreign matters invade the rail instead of other factors can be accurately judged. When water is accumulated around the track, the floater floats upwards to trigger the tension sensor so as to accurately judge whether the underground pipeline is blocked or not to cause flooding. When the disaster monitoring device is triggered, the analog signal collector compares waveforms in an accident through modulation and demodulation of the waveforms, and prevents the device from being triggered due to the influence of slight tension or pressure to misjudge the occurrence of the disaster. And when the waveform comparison is successful, the analog signal is transmitted to a signal transfer device and is transmitted to a coded signal receiver through a digital signal connection wire, the signal type is judged and is sent to a signal collecting and data sending device, a wireless signal is sent to a rescue and emergency center through a signal tower, and the disaster on the road section is immediately rescued and deployed.
The beneficial technical effects of the invention are as follows:
1. the monitoring device provided by the invention adopts an all-dimensional monitoring mode to monitor landslide foreign matters, and detects the invasion of the foreign matters from each direction to the track through the seepage holes in five directions above the all-dimensional debris flow pressure monitoring device.
2. The invention has higher monitoring accuracy, converts unstable and chaotic signals into simple and regular binary codes through signal processing by analog signals generated by the detection of each device, and determines the occurrence of disaster accidents by comparing the waveform of mutation signals acquired in advance with the numerical value of the pull pressure. The traditional monitoring mode adopts a monitoring terminal to perform digital image processing on an accident site, the processing mode needs a large amount of intelligent machines and is high in cost, misjudgment disaster easily occurs, and rescue are carried out by misdeployment.
3. The invention adopts the specially designed sensor device, because the pressure and tension sensors are simple to maintain, and the design of the device also reduces the loss of the sensors to a certain extent, so as to reduce the maintenance frequency of the device, and the installation and debugging of the device are very simple. And the sensitivity and the accuracy are higher, and the rapid and efficient monitoring, disaster prevention and early warning can be realized.
4. Compared with the existing railway debris flow or flood monitoring system, the railway debris flow or flood monitoring system has the advantages that two natural disasters are simultaneously monitored on the same place, the disaster site conditions are preliminarily judged by accurately transmitting and converting signals and matching with a monitoring terminal system, the disaster occurrence position is accurately positioned through a triggering device, a rescue army can accurately deploy disasters in advance through different alarm signals, relevant rescue armies are dispatched to disaster occurrence places in real time to process the disasters in real time, and the disaster processing efficiency is improved.
Drawings
Fig. 1 is a schematic structural view of a flood monitoring device according to the present invention.
Fig. 2 is a schematic structural view of the omnibearing debris flow disaster monitoring device.
FIG. 3 is a schematic diagram of the arrangement of the geological disaster early warning system along the railway of the present invention.
FIG. 4 is a schematic side view of the arrangement of the geological disaster early warning system along the railway of the invention.
FIG. 5 is a schematic diagram of functional modules of the railway line geological disaster early warning system.
FIG. 6 is a flow chart of the operation of the geological disaster early warning system along the railway of the present invention.
In the drawings, the numbers are explained as follows: 1-anti-corrosion metal baffle, 2-square floater, 3, string, 4-water seepage well cover, 5-spring, 6-waterproof wiring port, 7-tension sensor, 8-multi-azimuth seepage hole, 9-smooth pressure baffle, 10-pressure sensor, 11-mountain, 12-debris flow and other landslide foreign matters, 13-contact net, 14-pantograph, 15-traction substation, 16-contact net rack, 17-tunnel, 18-debris flow disaster monitoring device, 19-flood disaster monitoring device, 20-analog signal controller, 21-ponding, 22-steel rail, 23-wireless signal receiver, 24-bogie, 25-underground seepage pipeline, 26-waveform recorder, 27-signal converter, 28-control tower, 29-analog signal input interface, 30-digital signal output interface, 31-sleeper, 32-disaster monitoring module, 33-disaster occurrence judgment module, 34-signal conversion module, 35-disaster judgment module and 36-signal wiring module.
Detailed Description
The invention is described in further detail below with reference to the figures and the detailed description.
The method is mainly used for detecting and preliminarily distinguishing the natural disaster condition of the mountain railway. When an emergency occurs, the train is prevented from continuously running to the accident occurring road section, the emergency scheme is deployed in advance, and accidents such as threatening the safety of passengers due to delay of disaster emergency actions are avoided.
The invention relates to a railway line geological disaster early warning system adopting pressure and buoyancy omnibearing monitoring, which comprises a disaster monitoring module 32, a disaster occurrence judging module 33, a signal processing and converting module 34 and a disaster judging module 35.
The disaster monitoring module 32 comprises a flood disaster monitoring device 19 and an omnibearing debris flow disaster monitoring device 18, and is used for monitoring the condition of accumulated water 21 on the track 22 and monitoring whether foreign matters 12 invade the steel rail on one side of the mountain 11 from all directions to judge the disaster condition of the geographical environment where the steel rail is located. The disaster occurrence determination module 33 uses a track disaster warning platform and a signal mechanism hardware device, and is configured to record an analog signal generated by triggering the monitoring device and a geographic location of the device, and send an alarm signal to determine whether a disaster occurs. The signal processing and converting module 34 is used for modulating, demodulating and analog-to-digital converting the analog signal, and determining the type and position of the alarm signal through the signal. The disaster determination module 35 uses a manchester code signal receiver for analyzing a level signal composed of binary codes to determine the occurrence of a disaster and to send an alarm signal to cope with two kinds of disasters.
Wherein, flood disaster monitoring devices 19 is as shown in fig. 1, including square float 2 and force sensor 7, square float 2 is passed infiltration well lid 4, spring 5 by string 3 and is connected with force sensor 7, and square float 2 is sealed by smooth anticorrosion metal baffle 1 around and above, and the below is connected with infiltration well lid 4, guarantees that square float 2 can not lead to force sensor 7 to trigger because of foreign matter 12 clashes. And a waterproof wiring port 6 on the tension sensor 7 is used for outputting an analog signal. The omnibearing debris flow disaster monitoring device 18 is shown in fig. 2, the whole device is provided with a multidirectional mud seepage hole 8 with five directions by using an anti-corrosion metal baffle plate 1, and a lower pressure sensor 10 and a pentagonal smooth pressure baffle plate 9 are surrounded by the anti-corrosion metal baffle plate 1 to ensure that the pressure sensor 10 is only subjected to pressure from foreign matters above, and the pressure is born by a baffle plate supported by a spring 5. The specific working principle is that when rainwater flows backward and the water level around the steel rail rises, accumulated water outside the anti-corrosion metal baffle plate 1 and accumulated water inside the baffle plate form a communicating device through the water seepage holes, and the buoyancy of the floater is detected through the tension sensor 7 to judge the water level of the accumulated water around the steel rail; when foreign matters such as debris flow are impacted from a plurality of directions and pressed into the pressure baffle plate 9 through the multi-azimuth seepage holes, the pressure baffle plate 9 and the pressure sensor 10 are separated by a certain distance, and only when the impact force of the foreign matter pressure or the impact of the foreign matters is large enough, the device can be triggered to judge whether the track is attacked by the foreign matters.
Considering that the two disasters occur in the running process of a train at special geographical positions, the measuring point layout of the monitoring device needs to be arranged in combination with the terrain, a flood disaster situation monitoring device 19 and an omnibearing debris flow disaster situation monitoring device are shown in fig. 3, the debris flow disaster situation monitoring device 18 and the flood disaster situation monitoring device 19 are arranged on two sides of a track in parallel, the debris flow disaster situation monitoring device 18 is arranged on a steel rail 22 close to one side of a mountain body 11, the flood disaster situation monitoring device 19 is arranged on a water seepage well cover 4 around the steel rail 22 close to one side of a river bed, most tunnel portals are connected with the mountain body, but under natural weather conditions such as rainy season or extreme torrential rain, rainwater is easily poured due to blockage of an underground water seepage pipeline 25 inside the tunnel portal, so that accumulated water 21 appears around the steel rail 22 in the tunnel portal, and landslide foreign matters 12 such as debris flow outside the tunnel portals are easily invaded into the tunnel portals from all directions and easily collide with a network racks to cause collapse, therefore, the monitoring device is capable of accurately monitoring whether the flood disasters at the measuring points 17, the tunnel portals and the flood disasters are accurately arranged on the road sections such as the railway network racks, and the natural weather, and whether the flood disasters can be accurately monitored at regular time, and whether the safety monitoring device can be accurately.
As shown in fig. 4, when the disaster monitoring device is triggered, the generated analog signal is transmitted to the analog signal controller 20 through the signal connection 36, the waveform recorder 26 is arranged in the device for recording modulation and demodulation of the analog signal, because the analog signal transmitted from the sensor has different waveform physical quantities such as frequency, amplitude and the like, amplitude modulation, frequency modulation and the like needs to be processed by hardware equipment to obtain a regular waveform, and the regular waveform can be compared with the physical quantity generated by testing to judge whether the signal and the position information of the device are transmitted to the signal transfer module 27, and after corresponding signal conversion and disaster judgment, the signal and the position information are transmitted to the rescue center through the signal tower 28 by adopting a wireless communication technology, and once the train receives an alarm signal through the wireless signal receiver 23, emergency braking measures can be taken to ensure the safety of passengers along the railway.
The functional module of the geological disaster early warning system along the railway is shown in fig. 5, the working process is shown in fig. 6, when only a debris flow or landslide accident happens, the debris flow disaster monitoring device 18 in the disaster monitoring module 32 is triggered, the pressure sensor 10 in the disaster monitoring module acquires the pressure of a baffle, the signal is transmitted to the analog signal controller 20, the signal is successfully compared through modulation and demodulation of the signal, and the alarm signal is immediately transmitted to the track disaster warning platform of the disaster occurrence judgment module 33 to prompt the train to be immediately braked emergently through the wireless transmission module. The rail disaster warning platform is matched with a monitoring terminal system to extract information of a measuring point position of a disaster monitoring device, meanwhile, an analog signal controller 20 transmits a pressure analog signal to a disaster signal transfer device 27, receives the signal through an analog signal input interface 29 and converts the signal into a binary digital signal which represents a series of 0 through A/D conversion. The coded signals are transmitted to a Manchester code receiver through a digital signal transmission interface for code analysis, and when the received signals represent a series of binary codes of 0, the disaster judgment module 35 can judge that the debris flow or landslide geological disaster occurs along the railway. When flood disasters occur, the flood disaster monitoring device is triggered, the tension sensor in the flood disaster monitoring device collects buoyancy of the floater, and if the received signals are represented as a series of 1 binary codes through signal processing, the flood geological disasters along the railway can be judged; if two natural disasters happen simultaneously, the received signals are represented as binary codes with 01 alternation, and the two natural disasters can be judged to happen simultaneously. Therefore, the rescue troops can carry out accurate deployment on the disaster in advance through different alarm signals, and the efficiency of disaster treatment is improved.
Claims (5)
1. A railway line geological disaster early warning system adopting pressure and buoyancy omnibearing monitoring is characterized by comprising a disaster monitoring module (32), a disaster occurrence judging module (33), a signal processing and converting module (34) and a disaster judging module (35);
the disaster monitoring module (32) comprises a flood disaster monitoring device (19) and an omnibearing debris flow disaster monitoring device (18) and is used for monitoring the condition of accumulated water (21) on the track (22) and simultaneously monitoring whether foreign matters (12) invade the steel rail on one side of the mountain body (11) from all directions;
the disaster occurrence judgment module (33) uses a rail disaster warning platform and signal mechanism hardware equipment, and is used for recording analog signals generated by triggering the monitoring device and the geographic position of the device and sending warning signals to judge whether disasters occur or not;
the signal processing and converting module (34) is used for modulating, demodulating and converting analog signals, and judging the types and position signals of the sent alarm signals through the signals;
the disaster distinguishing module (35) uses a Manchester coding signal receiver and is used for analyzing a level signal formed by binary codes to distinguish the occurrence condition of the disaster and send an alarm signal to deal with the two disasters.
2. The railway line geological disaster early warning system adopting pressure and buoyancy omnibearing monitoring is characterized in that the flood disaster monitoring device (19) comprises a square floater (2) and a tension sensor (7), the square floater (2) penetrates through a water seepage well cover (4) through a thin rope (3), a spring (5) is connected with the tension sensor (7), the periphery and the upper part of the square floater (2) are sealed by a smooth anti-corrosion metal baffle (1), and the lower part of the square floater is connected with the water seepage well cover (4), so that the square floater (2) is prevented from triggering the tension sensor (7) due to collision of foreign matters (12);
all-round mud-rock flow disaster situation monitoring devices (18) upper portion is diversified oozing mud hole (8), and the lower part is smooth pressure baffle (9) and passes through spring (5) connection pressure sensor (10).
3. The railway line geological disaster early warning system adopting pressure and buoyancy omnibearing monitoring is characterized in that the disaster occurrence judgment module (33) is connected with the analog signal controller (20) through the tension sensor (7) and the pressure sensor (10), and respectively records sudden change of continuously changed physical quantity generated by tension or pressure, and if the sudden change exceeds a detection critical value, an alarm signal and a sudden change signal are transmitted into the signal processing and converting module (34).
4. The railway-line geological disaster early warning system adopting pressure and buoyancy omnibearing monitoring as claimed in claim 3, characterized in that the signal processing and converting module (34) comprises a signal converter (27) and a ground control tower (28), the signal converter (27) converts analog signals into digital signals through A/D conversion, binary numbers generated by quantization are arranged together to form a sequential pulse sequence by using Manchester coding, and the corresponding digital signals are transmitted to the disaster distinguishing module (35).
5. The railway line geological disaster early warning system adopting pressure and buoyancy omnibearing monitoring as claimed in claim 1, characterized in that the disaster discrimination module (35) comprises a coding analysis platform, a main control module and a wireless signal transmission module, and the wireless signal transmission module adopts LoRa communication technology to perform unauthorized spectrum communication transmission.
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| CN112284496A (en) * | 2020-10-21 | 2021-01-29 | 李克雷 | Intelligent water level monitoring device for hydraulic engineering |
| CN112382057A (en) * | 2020-11-03 | 2021-02-19 | 四川轻化工大学 | Automatic monitoring and alarming device for debris flow |
| CN215275971U (en) * | 2021-06-18 | 2021-12-24 | 广州市国权建筑工程有限公司 | A waterlogging prevention and cure device for river surge is rectified |
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