CN104315251B - Artificial pipe jacking construction method under soil stone combination geological conditions - Google Patents
Artificial pipe jacking construction method under soil stone combination geological conditions Download PDFInfo
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- CN104315251B CN104315251B CN201410496436.4A CN201410496436A CN104315251B CN 104315251 B CN104315251 B CN 104315251B CN 201410496436 A CN201410496436 A CN 201410496436A CN 104315251 B CN104315251 B CN 104315251B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
Artificial pipe jacking construction method under native stone combination geological conditions of the present invention, is characterized in that: comprise the following steps: in make → soil of the installation of preparation of construction → active well making → equipment, tool pipe, cubic meter of stone dismounting → pipeline jacking → pipe, slip casting → inspection shaft is built by laying bricks or stones and backfill. The invention has the beneficial effects as follows, neighboring buildings facility, without impact, is guaranteed to construction safety, and the amount of backbreaking is little, reduces construction cost, ensures construction speed, little on the impact such as underground utilities, ground.
Description
Technical field
The invention belongs to building engineering field, relate to artificial pipe jacking construction method under a kind of native stone combination geological conditions.
Background technology
The fast development of urban construction, impels city complete sets of basic equipment facility to carry out perfect, and all kinds of pipelines all will carry outLay, for saving aboveground space, current various pipelines adopt the mode of embedded underground more, but at densely populated urban district or trunkRoad excavation buried pipeline is larger for periphery resident and traffic impact, and therefore the application of jacking construction in urban duct is built moreCome more extensive.
Jinan City's geological conditions is special, and subterranean strata distributes wide, and rock stratum mostly is miscellaneous fill above. Operation when jacking constructionFace is narrow and small, particularly under native stone combination geological conditions, carries out push pipe, and will face the cubic meter of stone and remove the difficulties such as difficulty is large, landslide, ifAdopt blast working to remove the cubic meter of stone, larger on neighboring buildings facility impact, and the value of backbreaking should not control, operating personnel's personal safetyBe difficult to ensure.
Summary of the invention
The present invention is in order to make up the deficiencies in the prior art, and providing a kind of affects little on neighboring buildings, underground utilities, groundNative stone combination geological conditions under artificial pipe jacking construction method.
The present invention is achieved through the following technical solutions:
Artificial pipe jacking construction method under native stone combination geological conditions of the present invention, is characterized in that: comprise the following steps: executeWorking drawing is standby → and active well making → equipment is installed, tool pipe is made → soil, the interior slip casting → inspection of the cubic meter of stone dismountings → pipeline jacking → pipeLook into that well is built by laying bricks or stones and backfill.
Concrete steps are as follows:
(1) active well is made
Active well is made can be according to field condition, selects open caisson, bolt-spary supports, cast-in-place under the prerequisite of guaranteeing construction safetyThe modes such as steel reinforced concrete dado, reversal of the natural order of things borehole wall method;
(2) tool pipe is made
On the basis making at conventional tool pipe, add steel plate protective cover, steel plate protective cover is anchored at first segment pipeline outsideTop, forms working space below steel plate protective cover and between above pipeline; Protective cover is decomposed into some to be transported in wellRow is assembled;
(3) soil, the cubic meter of stone are removed
The A earthwork is removed
The cubic metre of earth and stone under soil stone combination geological conditions is removed and is taked inclined-plane drivage method, carries out from top to bottom; Conditions permit feelingsUnder condition, push up in advance, by steel plate protective cover incision soil layer inside, first the earthwork of pipeline vault front end is excavated, excavating depth is less than fairPermitted the value of backbreaking and steel plate protective cover penetraction depth;
The B cubic meter of stone is removed:
Hydraulic rock splitting machine coordinates air drill, pneumatic pick to remove the cubic meter of stone; Strict control over-excavation amount, with digging with jacking; The amount of backbreakingControl mainly for cubic meter of stone position, reach by optimizing bore position laying the object that reduces the value of backbreaking; In active well, ventilate smoothLogical; In active well, be equipped with harmful gas detector, prevent that pernicious gas from infiltrating;
(4) pipeline jacking
When pipeline jacking, keep a close eye on top power and change, as found, power rapid increasing in top stops jacking immediately, enters hole and checks whether haveStone corner angle hinder jacking, if clear in hole is considered to run into barrier after steel plate protective cover enters soil layer, should continue to digPick is until barrier removing; Change if rock stratum distributes, when pipe top is positioned at rock stratum with upper part, need follow with digging with jackingPrinciple;
(5) slip casting in pipe
Before slip casting, first by space shutoff between the pipeline outer wall in active well and received well and arch hole, prevent slurry outflow,Slip casting layered injects, and re-injects wait injecting after slurry precipitation is solidified.
During step (2) tool pipe is made,
For reducing the amount of backbreaking, steel plate protective cover is consistent with pipeline outer wall radian; When intraductal operation insufficient space, outside pipelineBetween wall and steel plate protective cover, add shaped steel, strengthen to greatest extent working space, shaped steel thickness is less than and allows the value of backbreaking; For preventingThe slump earthwork damages protective cover, and steel plate protective cover anchorage length is preferably 1:2 with the front length ratio of pipe; Pipe top is above is miscellaneous fillTime, need push up in advance for preventing from caving in, for reducing jacking resistance, while selecting steel plate thicker, front end is made into sword pin.
During step (3) soil, the cubic meter of stone are removed, when the step B cubic meter of stone is removed,
Boring: produce dust when preventing from holing, air drill is added to water injection pipe; Pitch-row is according to stone matter situation and hydraulic splittingAcc power is determined;
Splitting: utilize space that the top earthwork excavates rear formation as free face, use hydraulic rock splitting machine by entiretyBulk is resolved in rock stratum, and splitting order is carried out from top to bottom, and recycling pneumatic pick will be not easy to the stone fragmentation of carrying;
Corner trimming: utilize pneumatic pick that position not in place dismounting is rebuild, bottom, arch hole is used broken according to design altitudeStone flattens, and guarantees that pipeline passes through smoothly.
In step (5) pipe, in slip casting, slip casting comprises the raw material of following percentage by weight: cement 30%, fine clay 60%, raw stoneAsh 10%, then add the water that accounts for raw material gross weight 50%, stir.
Artificial pipe jacking construction method protective cover used under native stone combination geological conditions of the present invention, is characterized in that: anti-Guard shield is anchored at first segment pipeline outer upper, and protective cover is fixed together and is made by some block plates, and it is curved downwards that protective cover isBent circular arc, forms working space below steel plate protective cover and between above pipeline; Between pipeline outer wall and steel plate protective coverBe provided with the type steel support bar supporting for strengthening.
Before the anchorage length of steel plate protective cover and pipeline, length ratio is preferably 1:2, i.e. anti-1/3rd the length anchor that is covered withGu on first segment pipeline, have 2/3rds length to be positioned at before first segment pipeline.
The invention has the beneficial effects as follows, neighboring buildings facility, without impact, is guaranteed to construction safety, and the amount of backbreaking is little, and reduction is executedWork cost, ensures construction speed, little on the impact such as underground utilities, ground.
Brief description of the drawings
Fig. 1 is schematic flow sheet of the present invention. Fig. 2 is protective cover and first segment pipeline schematic diagram.
In figure, 1 protective cover, 2 first segment pipelines, 3 support bars.
Detailed description of the invention
Accompanying drawing is a kind of specific embodiment of the present invention.
Artificial pipe jacking construction method under native stone combination geological conditions of the present invention, comprises the following steps: preparation of construction → workDo that well making → equipment is installed, tool pipe is made → soil, the interior slip casting → inspection shaft of the cubic meter of stone dismountings → pipeline jacking → pipe build by laying bricks or stones andBackfill.
Concrete steps are as follows:
(1) active well is made
Active well is made can be according to field condition, selects open caisson, bolt-spary supports, cast-in-place under the prerequisite of guaranteeing construction safetyThe modes such as steel reinforced concrete dado, reversal of the natural order of things borehole wall method.
(2) tool pipe is made
On the basis making at conventional tool pipe, add steel plate protective cover, steel plate protective cover is anchored at first segment pipeline outsideTop, forms working space below steel plate protective cover and between above pipeline, ensures operator safety:
Artificial pipe jacking construction method protective cover used under soil stone combination geological conditions, protective cover 1 is anchored at the first pipe jointRoad 2 outer upper, protective cover is fixed together and is made by some block plates, and protective cover is reclinate circular arc, and steel plate is anti-Below guard shield and between above pipeline, form working space; Between pipeline outer wall and steel plate protective cover, be provided with for strengthen supportType steel support 3.
Before the anchorage length of steel plate protective cover and pipeline, length ratio is preferably 1:2, i.e. anti-1/3rd the length anchor that is covered withGu on first segment pipeline, have 2/3rds length to be positioned at before first segment pipeline.
1) for convenience of install, protective cover can be decomposed into some be transported in well, carry out assembled;
2) for reducing the amount of backbreaking, steel plate protective cover is consistent with pipeline outer wall radian;
3) if when intraductal operation insufficient space, between pipeline outer wall and steel plate protective cover, add shaped steel, add to greatest extentLarge working space, shaped steel thickness is less than and allows the value of backbreaking;
4) for preventing that the slump earthwork from damaging protective cover, cause unexpected injury, steel plate protective cover anchorage length and the front length of pipeRatio is preferably 1:2.
5) while more than pipe top being miscellaneous fill (the non-cubic meter of stone), need push up in advance for preventing from caving in, for reducing jacking resistance, selectWhen steel plate is thicker, front end can be made into sword pin.
(3) soil, the cubic meter of stone are removed
1) cubic metre of earth dismounting
The cubic metre of earth and stone under soil stone combination geological conditions is removed and is taked inclined-plane drivage method, carries out from top to bottom. Conditions permit feelingsUnder condition, push up in advance (when jacking, keeping a close eye on top power changes), by steel plate protective cover incision soil layer inside, first by before pipeline vaultEnd cubic metre of earth is excavated, and excavating depth is less than and allows the value of backbreaking and steel plate protective cover penetraction depth.
2) cubic meter of stone is removed: strict control over-excavation amount, with digging with jacking; The amount of backbreaking control, mainly for cubic meter of stone position, is passed throughOptimize bore position laying and reach the object that reduces the value of backbreaking; In active well, ventilate unimpeded; In active well, be equipped with pernicious gas inspectionSurvey instrument, prevent that pernicious gas from infiltrating;
Boring: produce dust when preventing from holing, air drill is added to water injection pipe. Pitch-row is according to stone matter situation and hydraulic splittingAcc power is determined.
Splitting: utilize space that the top earthwork excavates rear formation as free face, use hydraulic rock splitting machine by entiretyBulk is resolved in rock stratum, and splitting order is carried out from top to bottom, and recycling pneumatic pick will be not easy to the stone fragmentation of carrying.
Corner trimming: utilize pneumatic pick that position not in place dismounting is rebuild, bottom, arch hole is used broken according to design altitudeStone flattens, and guarantees that pipeline passes through smoothly.
(4) pipeline jacking (adopting reinforced concrete tubing)
First segment pipeline with protective cover is positioned at foremost, the work of operating worker between protective cover and first segment pipelineIn industry space, carry out operation. When pipeline jacking, keep a close eye on top power and change, as found, power rapid increasing in top stops jacking immediately, enters hole inspectionLook into whether have stone corner angle hinder jacking, if clear in hole consider to run into barrier after steel plate protective cover enters soil layer,Should continue to excavate until barrier is removed. Change if rock stratum distributes, when pipe top is positioned at rock stratum with upper part, need follow with diggingWith the principle of jacking.
(5) slip casting in pipe
More common cubic metre of earth of push pipe amount of backbreaking of the cubic meter of stone section amount of backbreaking wants large, and the part of backbreaking must effectively be filled, therefore noteSlurry work is particularly important. In pipe, jacking construction section safety is guaranteed in slip casting, avoids causing owing to producing space between pipeline soil wallRoad surface subside, strengthen self-stability, soil body robustness and the compression strength of ground. Before slip casting first by active well and received wellSpace shutoff between pipeline outer wall and arch hole, prevents slurry outflow, and slip casting layered injects, after injecting slurry precipitation and solidifying againInferior injection.
Slip casting match ratio in pipe
| P.O32.5 cement | Fine clay | Quick lime | Ratio of water to material |
| 30% | 60% | 10% | 0.5：1 |
Native stone of the present invention in conjunction with artificial jacking construction engineering method and traditional construction technology under geological conditions (soundless cracking agent,Explosion, pneumatic pick fragmentation) relatively carry out performance analysis:
Economic benefit: advantage of the present invention is, 1, safety coefficient is large, easy operating, energy-saving and cost-reducing. 2, do not receive external conditionConstraint, can uninterruptedly work continuously. 3, accelerating construction progress, average every day drilling depth 2-4m. The shortcoming of conventional construction method is, 1,Explosion danger coefficient is large, the purchasing of explosive, deposit, use cost is high. 2, soundless cracking agent is limited by environment temperature, constructionCycle is long. 3, the special hard stone difficulty of pneumatic pick dismounting is larger, drilling depth 10cm every day left and right.
Social benefit is: advantage of the present invention is to greatly reduce construction to the broken property impact of neighboring buildings deposits yields and rightThe impact of periphery resident daily life, reduces the traffic pressure causing because of construction. The shortcoming of conventional construction method is, easily to all roundBuilding and underground utilities cause damage, easily produce the adverse consequences such as dust, noise, vibrations.
Environmental benefit is: advantage of the present invention is, when construction to environment without any adverse effect, without dust, noiselessness, slagSoil is concentrated manageability. The shortcoming of conventional construction method is, 1, blast working easily causes environment, body of groundwater to pollute; 2, the cubic meter of stone is quick-friedBreak once in journey and easily produce and stir up a cloud of dust, explosion flue dust is to environment.
Application example: on July 30,20 days to 2013 April in 2013, Jinan ChengJian Group is at Jinan City's purification of water quality threeIn supporting extension project the first bid section Er Huan East Road jacking construction of factory, use this engineering method, construction area is positioned at business district, periphery residentDistrict's personnel's dealing is more, does not possess the condition of sealing excavation construction. And the underground utilities such as gas-pipe line, electric power, feedwater distribute multipleAssorted. In construction, test and verify, practice of construction is respond well, has completed smoothly construction task, obtains owner repeatedlyFavorable comment, the first bid section of the Yellow River road and bridge engineering company construction is used for reference this engineering method, completes smoothly its construction task, after testing relevant skillArt index, this engineering method meets construction requirement, has good economic technology and is worth.
Claims (6)
1. an artificial pipe jacking construction method under native stone combination geological conditions, is characterized in that: comprise the following steps: preparation of construction→ active well making → equipment is installed, tool pipe is made → native, cubic meter of stone dismounting → pipeline jacking → pipe interior slip casting → inspection shaft blockBuild and backfill;
Concrete steps are as follows:
(1) active well is made
Active well is made can, according to field condition, select open caisson, bolt-spary supports, cast in place reinforced bar under the prerequisite of guaranteeing construction safetyConcrete dado, reversal of the natural order of things borehole wall method mode;
(2) tool pipe is made
On the basis making at conventional tool pipe, add steel plate protective cover, steel plate protective cover is anchored on first segment pipeline outsidePortion, forms working space below steel plate protective cover and between above pipeline; Steel plate protective cover is decomposed into some to be transported in wellCarry out assembled;
(3) soil, the cubic meter of stone are removed
The A earthwork is removed
The earthwork under soil stone combination geological conditions is removed and is taked inclined-plane drivage method, carries out from top to bottom; In conditions permit situation, enterThe pre-top of row, by steel plate protective cover incision soil layer inside, first excavates the earthwork of pipeline vault front end, and excavating depth is less than and allows to backbreakValue and steel plate protective cover penetraction depth;
The B cubic meter of stone is removed:
Hydraulic rock splitting machine coordinates air drill, pneumatic pick to remove the cubic meter of stone; Strict control over-excavation amount, with digging with jacking; The amount of backbreaking controlMainly for cubic meter of stone position, reach by optimizing bore position laying the object that reduces the value of backbreaking; In active well, ventilate unimpeded; WorkDo to be equipped with harmful gas detector in well, prevent that pernicious gas from infiltrating;
(4) pipeline jacking
When pipeline jacking, keep a close eye on top power and change, as found, power rapid increasing in top stops jacking immediately, enters hole and checks whether there is stoneCorner angle hinder jacking, if clear in hole is considered to run into barrier after steel plate protective cover enters soil layer, should continue to excavate straightRemove to barrier; Change if rock stratum distributes, when pipe top is positioned at rock stratum with upper part, need follow with the principle of digging with jacking;
(5) slip casting in pipe:
Slip casting in space between pipeline outer wall and arch hole; Slip casting layered injects, after injecting slurry precipitation and solidifying againInject.
2. artificial pipe jacking construction method under native stone combination geological conditions according to claim 1, is characterized in that: step(2) during tool pipe is made,
For reducing the amount of backbreaking, steel plate protective cover is consistent with pipeline outer wall radian; When intraductal operation insufficient space, pipeline outer wall withBetween steel plate protective cover, add type steel support bar, strengthen to greatest extent working space, type steel support bar thickness is less than and allows to backbreakValue; For preventing that the slump earthwork from damaging steel plate protective cover, steel plate protective cover anchorage length is preferably 1:2 with the front length ratio of pipe; Pipe topWhile being more than miscellaneous fill, need push up in advance for preventing from caving in, for reducing jacking resistance, while selecting steel plate thicker, front end be madeBecome sword pin.
3. artificial pipe jacking construction method under native stone combination geological conditions according to claim 1, is characterized in that: step(3) during soil, the cubic meter of stone are removed, when the step B cubic meter of stone is removed,
Boring: produce dust when preventing from holing, air drill is added to water injection pipe; Pitch-row is according to stone matter situation and hydraulic rock splittingAcc power is determined;
Splitting: utilize space that the top earthwork excavates rear formation as free face, use hydraulic rock splitting machine by overall rock stratumResolve into bulk, splitting order is carried out from top to bottom, and recycling pneumatic pick will be not easy to the stone fragmentation of carrying;
Corner trimming: utilize pneumatic pick that position not in place dismounting is rebuild, bottom, arch hole is used rubble to enter according to design altitudeRow leveling, guarantees that pipeline passes through smoothly.
4. artificial pipe jacking construction method under native stone combination geological conditions according to claim 1, is characterized in that: step(5) in the interior slip casting of pipe, slip casting comprises the raw material of following percentage by weight: cement 30%, and fine clay 60%, quick lime 10%, then addAccount for the water of raw material gross weight 50%, stir.
5. an artificial pipe jacking construction method steel plate protective cover used under native stone combination geological conditions claimed in claim 1,It is characterized in that: steel plate protective cover is anchored at first segment pipeline outer upper, and steel plate protective cover is fixed on one by some block platesRise and make, steel plate protective cover is reclinate circular arc, below steel plate protective cover and between above pipeline, forms working space;Between pipeline outer wall and steel plate protective cover, be provided with the type steel support bar supporting for strengthening.
6. steel plate protective cover according to claim 5, is characterized in that: long before the anchorage length of steel plate protective cover and pipelineDegree ratio is preferably 1:2, i.e. steel plate protection is covered with 1/3rd length and is anchored on first segment pipeline, has 2/3rds lengthBe positioned at before first segment pipeline.
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| CN201410496436.4A CN104315251B (en) | 2014-09-25 | 2014-09-25 | Artificial pipe jacking construction method under soil stone combination geological conditions |
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| CN108487908A (en) * | 2018-03-01 | 2018-09-04 | 中铁六局集团有限公司 | A kind of basil device and its construction method of the shoveling of jacking construction auxiliary |
| CN111810715B (en) * | 2020-06-18 | 2021-09-24 | 中铁工程装备集团有限公司 | Trenchless pipeline updating method and construction system |
| CN116906049B (en) * | 2023-09-08 | 2023-12-08 | 中铁七局集团广州工程有限公司 | Construction method for breaking large boulder of jacking pipe through mechanical splitting |
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| US3812884A (en) * | 1970-03-04 | 1974-05-28 | T Breitfuss | Integrally combined preformed core and cast-in-place outer component section for pipeline assemblies |
| CN103162011A (en) * | 2011-12-08 | 2013-06-19 | 上海市基础工程有限公司 | Punching rock breaking barrier cleaning method in pipe-jacking construction |
| CN103883796B (en) * | 2014-04-07 | 2015-12-02 | 葛洲坝集团第一工程有限公司 | Silt particle mud district hand pick formula jacking construction device and method |
| CN103938703B (en) * | 2014-05-07 | 2015-11-25 | 中国五冶集团有限公司 | A kind of pipe jacking construction method |
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