JP6037982B2 - Waste treatment method at waste disposal site - Google Patents

Description

  The present invention relates to a waste disposal method that realizes volume reduction (expansion of disposal space) and buried disposal in a poorly disposed waste disposal site that generates soft ground such as landfill or groundwater, and the waste disposal method. The present invention relates to an excavation body to be used.

  Waste that is not reused, such as general waste and industrial waste, is dumped in the waste disposal site, and dumping is simply performed on the previous waste, and the waste is sequentially stacked. It is. If left unattended, there is no reduction in volume other than natural compression by its own weight. For this reason, when the disposal site is full, another disposal site must be found.

  Therefore, in a waste disposal site, a drilled earth and sand compacted auger (excavated body) with a trowel on the outer periphery is used to form a consolidated hole by excavating and drilling without discharge. 2. Description of the Related Art There is known a waste processing method that forms a waste space and discards and fills the space with waste.

  For example, in Patent Document 1 (Japanese Patent Application Laid-Open No. 10-272432), after forming a consolidation hole, waste is thrown in from the hole opening while the excavation body is inserted into the hole and rotated backward and pulled out. A means is disclosed in which a hole portion (consolidation plate) is pressed against a hole wall while dropping to the bottom, and the remainder is sequentially deposited on the hole bottom.

  Patent Document 2 (Japanese Patent Laid-Open No. 2001-286843) discloses a excavation comprising a casing provided with a consolidation trowel (consolidation plate) on the peripheral surface and a drill rod having a drill head passing through the casing and protruding from the tip. A waste processing method is disclosed in which a body is used, non-discharge excavation is performed with a compacting trowel of the casing, surface layer waste is put into the casing with the casing remaining, and the casing is later pulled out.

  In Patent Document 3 (Japanese Patent Application Laid-Open No. 2006-15262), after forming an exhaustless compaction hole and pulling out the auger, a casing having a smooth outer peripheral surface is set up in the compaction hole, and waste is charged into the casing. However, a processing method is disclosed in which the casing is pulled out after filling.

  Further, Patent Document 4 (Japanese Patent Application Laid-Open No. 2008-302273) discloses a drilling head in which an inverted frustoconical drilling part is provided at the tip of a cylindrical body provided with a consolidation iron part, and a continuous connection with the drilling head. A waste treatment method is disclosed in which a compact hole is formed and held with the casing and the excavation member is pulled out, and then waste is put into the compact hole.

Japanese Patent Laid-Open No. 10-272432. JP 2001-286843 A. JP 2006-15262 A. JP 2008-302273 A.

  In the ground situation of the waste disposal site, when the above-described consolidation hole is formed, there is a case where groundwater enters the consolidation hole immediately. Especially in landfill waste disposal sites, when the landfill was done with waste such as dredged soil, building waste and incineration ash, the ground itself was not dense and the accumulated waste reached below sea level. Even if the above-mentioned consolidation hole is formed by excavation, seawater immediately permeates and the consolidation hole collapses.

  Even if the construction method described in Patent Document 1 is adopted under the above circumstances, the hole wall of the consolidation hole is not retained by the casing, and therefore there is a possibility that the hole wall of the consolidation hole may collapse during the waste charging operation. . Moreover, there is a waste of pulverizing the accumulated waste with the tip bit of the excavated body to form a consolidated hole, and in the state where the excavated body (auger shaft) exists in the excavated consolidated hole, There is a problem in terms of work efficiency, for example, because the cross-section to the bottom of the hole is narrow and waste input is not efficiently performed.

  Further, in a waste disposal site where there is a groundwater problem, there is a possibility that the consolidation hole may collapse before the casing is installed by means of introducing the casing into the consolidation hole after forming the consolidation hole as in the construction method described in Patent Document 3. In addition, as in the construction method described in Patent Document 4, the method based on the assumption that the excavated body is pulled out and the shape of the consolidated hole itself is maintained cannot be established due to the collapse of the consolidated hole.

  Further, as in the waste treatment method described in Patent Document 2, the means for throwing in waste while leaving the casing can cope with the groundwater problem, but the excavating body is a excavation section comprising a casing, a excavation rod and an excavation rod. Therefore, the rotary drive device also requires a drill rod driving mechanism at the time of excavation compaction and a casing drive mechanism at the time of pulling out the casing, which complicates the entire apparatus.

  Therefore, a novel excavation body capable of coping with the groundwater problem and a waste treatment method using the excavation body were proposed as Japanese Patent Application No. 2013-82952, and the present invention is reliable in addition to the basic construction method described above. This is a method proposed for implementation.

The apparatus used in the method of the present invention includes an excavator provided with a predetermined excavator, a rotary filler provided with screw blades (an auger-shaped member not provided with an excavator head), and a rotary drive device for the rotary filler. In the above-described suspension devices (crane), in particular, the excavated body is provided with a compact plate having a diameter corresponding to the excavation hole on the tip end of the predetermined casing, and the upper and lower sides thereof corresponding to the rotation direction. It is equipped with a function that presses the excavated material against the hole wall by placing multiple rounds so that part of them overlap at the position, and the lower opening has an inverted conical shape when closed, and the upper part can be hinged to open and close like a bowl The excavator is configured to hold the casing of the excavation body and rotate to excavate or pull out the excavation body.

The waste disposal method in the waste disposal site according to the present invention (Claim 1) is an excavation in which a drilling hole having a desired depth is formed by holding a casing and operating a drilling device in the waste disposal site. After the excavator and the excavator, the waste is introduced from the upper opening portion of the casing, and a downward filling pressure is applied to the input waste , and the casing is sequentially pulled out upward to open the casing from the opening and closing piercing portion. A refilling process in which the internal waste remains in the excavation hole and the excavation hole is filled with the waste is sequentially repeated by changing the excavation position. An open-filling work that completely opens the opening and closing piercing part by pulling the excavating body slightly upward as appropriate while applying downward filling pressure to the input waste, characterized in by comprising performing That.

  Thus, the excavated body is used to form a consolidation hole at the waste disposal site, and waste is input while leaving the excavated body as it is, so the consolidation is performed to a depth that reaches the layer containing groundwater (including seawater). Even if a hole is formed, waste can be thrown in without the possibility of collapse of the hole wall of the consolidation hole, and when necessary, the rotary filler is suspended in the excavated body and the rotary filler is rotated. The input waste is pumped downward in the excavation body, the input waste is filled to increase its density, and the input waste in the casing is pushed into the excavation hole through the opening and closing piercing part that is pulled out upward. The volume of the waste disposal site can be reduced.

  The open / close pier of the excavation part is not likely to open due to the counter pressure during excavation, but if even a slight opening occurs, the waste to be compacted will enter the casing and further open to consolidate. A case where holes cannot be formed is also assumed. Therefore, an appropriate fastener for maintaining the closed state of the opening piercing portion is provided (for example, the outside of the opening and closing piercing portion is connected by a thin wire), and the opening of the opening piercing portion is blocked by the fastener. May excavate. Further, at the end of the excavation work, there may be a case where a strong earth pressure (opening resistance force of the opening / closing piercing portion) is applied to the tip of the excavation part. In the above state, there is a possibility that the opening / closing piercing portion will not open due to the weight of the input waste and the upward movement of the excavation body, but when the waste is input, the rotating filler is placed at the bottom of the excavation hole and the input waste is moved downward. If the excavated body is pulled out slightly upward by pushing it against the open / close pier with the input waste, the input waste is prevented from moving upward by the rotating filler and is strongly under pressure. A strong opening pressure is applied to the opening / closing piercing portion, the thin wire-line fastener is cut, and the opening / closing piercing portion is reliably opened.

  In addition, the present invention (Claim 3) uses a drilling body provided with stirring blades arranged in a spiral intermittent manner below the formation position of each compaction plate on the outer peripheral surface of the excavation part. The object is formed by stirring and compacting to form a discharge-free excavation hole, and the discharge-free consolidation hole can be quickly constructed.

  The present invention is as described above, and when the consolidation hole is excavated and waste is put into the consolidation hole, the consolidation hole is maintained even in a groundwater layer such as a landfill or a waste disposal site that reaches under the sea level. In addition to waste volume reduction processing, direct waste burying processing in landfills and the like has also been realized.

The front view of embodiment of the excavation body used for this invention construction method. Explanatory drawing of embodiment of the rotation filling body and rotation drive device which are used for this invention construction method. Explanatory drawing (excavator) of the implementation condition of this invention construction method. The figure (opening backfilling). The figure (backfilling). The figure (at the end). The figure (continuous construction).

  Next, an embodiment of the method of the present invention will be described. The implementation apparatus of the present invention includes an excavation body 1, an excavation apparatus 2, a backhoe 3, a crane apparatus 4, a rotary filler 5, and a rotary drive device 6 for the rotary filler 5.

  The excavation body 1 shown as an embodiment is constituted by an excavation part 11 and two casings 12a and 12b.

  The excavation part 11 is provided with a casing connection part 112 at the upper end edge of the cylindrical main body 111, an agitation blade 113 and a compaction plate 114 on the outer peripheral surface, and an opening / closing piercing part 115 at the lower end part.

  The stirring blade 113 has an outer diameter corresponding to the excavation hole (consolidation hole) A and is provided spirally and intermittently. The compaction plate 114 is provided above the agitating blade 113 in a plurality of circumferences so that the end of the rotation direction has a diameter corresponding to the excavation hole A and sequentially above the rotation direction, and a part thereof overlaps at the vertical position. The opening / closing piercing portion 115 is provided in the lower opening of the cylindrical main body 111, and is composed of a plurality of pieces that can be opened and closed in a hook shape by connecting the upper portions to each other. It becomes a shape. Although not shown, the outside of the opening / closing piercing portion 115 is connected to the inner surface of the opening / closing piercing portion 115 by a fastener that prevents the opening of the opening / closing piercing portion 115, for example, a thin wire.

  The casings 12a and 12b have the same diameter as the cylindrical main body 111, and are provided with connecting parts 121 connected to the excavation part 11 and the other casings 12a and 12b continuously at the upper and lower ends.

  The excavator 2 is an existing device called a full-rotation type all-casing excavator, and includes an excavating mechanism 21 that holds the casings 12a and 12b and performs rotary excavation. The backhoe 3 and the crane apparatus 4 use well-known existing equipment.

  The rotary filler 5 and the rotary drive device 6 of the rotary filler 5 are connected by a connecting shaft 51 and suspended from the crane device 4. The rotary drive device 6 includes a rotary drive unit and is suspended. The latching portion 61 is provided, and the twist preventing arm portion 62 is protruded laterally, and the connecting shaft 51 is connected downward.

  The rotary filler 5 has a shape obtained by removing the excavation head from a general excavation auger, and includes a shaft blade 52 and a squeeze blade 53.

  Next, implementation of the present invention construction method (construction work) will be described using the above-described implementation apparatus. In the embodiment, the disposal site where the accumulated waste B exists is taken as an example. However, the present construction method is also applied to the case where the waste is buried directly like a landfill, in which case the excavation target is soft. It becomes the ground.

  The construction method of the present invention involves excavation and backfilling including opening backfilling. The excavator excavates the excavated body 1 in which the excavation part 11 and the casing 12a are connected as shown in FIG. The excavation mechanism 21 of the apparatus 2 is attached to the excavation mechanism 21 and excavation is started at a planned excavation position of the excavation hole.

  The excavation is carried out by the excavation mechanism 21 while the excavation body 1 is rotated, and the open / close piercing portion 115 of the excavation part 11 bites into the accumulated waste (or soft ground) B in the closed conical state, and further The accumulated waste B is agitated and pushed up while being twisted into the accumulated waste B by the action of the stirring blade 113 to dig. By this excavation, the hole wall is continuously pressed by the compaction plate 114 to be in a compacted state.

  In particular, since the casings 12a and 12b have the same diameter as the cylindrical main body 111, a gap is formed between the hole wall of the consolidation hole A, the excavation body 1 is smoothly advanced, and the consolidation hole A is formed by the casing 12a. Even if the hole wall of the hole collapses somewhat, the drilling hole is maintained.

  When excavation progresses to some extent, the casing 12b of the next stage is lifted and connected to the casing 12a by the crane device 4, and further excavation is performed to a predetermined depth, and the excavation work is completed (FIG. 3).

  When the excavation is completed, a backfilling operation is performed. At the beginning of the backfilling operation, an opening backfilling operation is performed. As shown in FIG. 4, the opening backfilling hangs the rotary drive device 6 in which the rotary filler 5 is connected by the connecting shaft 51 to the crane device 4. In particular, the rotation drive device 6 connects the wire 63 from the crane device 4 to the torsion preventing arm 62 so as to prevent its rotation, and further tensions the wire 63 to use the equipment near or on the ground surface as an anchor. Fix it.

  Then, the rotary packing 5 is passed through the casings 12 a and 12 b in a suspended state so that the tip reaches the bottom surface of the excavation part 11. At the same time, the waste C is put into the excavated body 1. Of course, the waste C may be put into the excavation body 1 in advance for the purpose of increasing the weight of the excavation body 1 for the progress of excavation.

  When the rotary packing 5 is filled and rotated (excavation reverse rotation) in the state where the input waste D exists at the bottom of the excavated body 1, the input waste D is pushed toward the inner bottom of the excavated body 1. . At the same time, when the excavated body 1 is slightly pulled upward, the input waste D is prevented from moving upward by the rotary filler 5 and is strongly pressed down, so that a strong opening pressure is applied to the opening / closing piercing portion 115. . As a result, the thin wire-line fastener is cut, and the open / close piercing portion 115 is reliably opened.

  When the opening backfilling process is completed, the rotary filling body 5 and the rotation driving device 6 are pulled out from the excavation body 1 or are left as they are, and the waste brought into the disposal site or the disposal site from the upper opening portion of the casing 12b. The waste C obtained by collecting the surface layer waste is introduced using the backhoe 3 or the like. At that time, if the rotary filling body 5 left in the excavation body 1 is operated or the input waste D is filled with the weight suspended by the crane device 4, a larger amount of the waste C can be input.

  When a certain amount of waste C is thrown in, when the excavating body 21 is moved upward by reversing the excavating mechanism 21 while the open / close piercing portion 115 of the excavating body 1 is in an open state, the thrown waste D remains in the consolidation hole. A will remain.

  When the casing 12b is exposed as the excavated body 1 is raised, the connection of the casing 12b is released, the casing 12b is suspended and removed by the crane device 4, and the waste C is thrown again from the upper opening of the casing 12a (FIG. 5). When the consolidation hole A is filled with the input waste D, the entire excavated body 1 is pulled out and the backfilling operation is completed (FIG. 6).

  After completing the excavation and backfilling, move to the next planned excavation position, carry out the next excavation and backfilling in order, and repeat this to complete the waste disposal site In this way, a larger amount of waste can be discarded (FIG. 7).

  In particular, according to the present invention, waste is provided in the consolidation hole A while the formed consolidation hole A is protected by the excavating body 1, so that the waste provided in a landfill or the like where the consolidation hole is likely to collapse. Even at the disposal site, it is possible to reduce the volume of waste without any problem, and it is possible to reduce the volume of waste into the compaction hole A continuously in the vicinity, improving work efficiency. is there.

DESCRIPTION OF SYMBOLS 1 Excavation body 11 Excavation part 111 Cylindrical main body 112 Casing connection part 113 Stirring blade 114 Compaction board 115 Opening-and-closing piercing part 12a, 12b Casing 121 Connection part 2 Excavator 21 Excavation mechanism 3 Backhoe 4 Crane apparatus 5 Rotating packing body 51 Connection shaft 52 Shaft portion 53 Screw blade 6 Rotation drive device 61 Suspended hanging stop portion 62 Twist prevention arm portion 63 Wire

Claims (3)

At the waste disposal site, a plurality of compaction plates with a diameter corresponding to the excavation hole on the end of the rotation direction are provided at the front end of the casing so as to partially overlap at the upper and lower positions sequentially corresponding to the rotation direction. The casing is held by using an excavation body in which an excavation part in which an opening / closing piercing part provided with an opening-and-closing piercing part that can be opened and closed like a bowl by connecting an upper part to a hinge by connecting the upper part to a hinge is connected to the lower opening. Excavator having an excavating mechanism for rotating and excavating, and excavator for forming an excavation hole of a desired depth; Excavation is performed by applying filling pressure downwards, pulling the casing upwards in order, leaving the waste in the casing in the excavation hole, and filling the excavation hole with waste. Change position and repeat sequentially In performing the rotation filling body provided with a screw blade initially the backfilling Engineering suspended disposed on the bottom side of the drilling member, the added filling pressure downward with respect to the input waste rotary packing, properly drilled A waste disposal method in a waste disposal site, characterized by performing an opening backfilling operation in which the body is slightly pulled upward to completely open the opening and closing piercing portion.   A stirring blade arranged in a spiral intermittent manner is provided below the formation position of each compaction plate on the outer peripheral surface of the excavation part, and the no-hole excavation hole is formed by stirring and compacting the hole wall surface structure during excavation. Waste disposal method at the stated waste disposal site.   3. In the backfilling work, the surface waste at the waste disposal site is scraped by a backhoe and put into the casing, and the input waste is filled with a weight suspended by a crane device. Waste treatment method at waste disposal site.

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