CN103162011A - Punching rock breaking barrier cleaning method in pipe-jacking construction - Google Patents
Punching rock breaking barrier cleaning method in pipe-jacking construction Download PDFInfo
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- CN103162011A CN103162011A CN2011104044861A CN201110404486A CN103162011A CN 103162011 A CN103162011 A CN 103162011A CN 2011104044861 A CN2011104044861 A CN 2011104044861A CN 201110404486 A CN201110404486 A CN 201110404486A CN 103162011 A CN103162011 A CN 103162011A
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Abstract
The invention relates to a punching rock breaking barrier cleaning method in pipe-jacking construction. The method includes that when a pipe-jacking is confronted with rocks and other barriers, and cannot advance forwards, firstly, a punching bored concrete pile machine is used for carrying out punching and crushing over the rocks which invade a pipe-jacking advancing route range, and then circulatory mud is used for discharging the broken rock ballast, low intensity mortar is recharged back to a punching hole to enable the mortar to be dense. After a mortar filling body is cut by the pipe-jacking, the pipe-jacking continues to advance forwards. An extremely common punching bored concrete pile construction device can be used for breaking down the underground rocks and other barriers which prevent the pipe-jacking construction. Environmental using limits are little. The punching rock breaking barrier cleaning method in the pipe-jacking construction has the advantages of being simple and practical, low in rock-breaking cost and short in barrier-cleaning work period. Multiple devices can be worked at the same time. The punching rock breaking barrier cleaning method firstly uses punching to break the rocks and clear the barriers in the pipe-jacking construction. The successful experience can lead projects of the same type in the construction.
Description
Technical field
The present invention relates to the broken rock of punching in a kind of jacking construction method of removing obstacles, abolish the method for the obstacles such as rock of invading the push pipe path domain in especially a kind of jacking construction.
Background technique
When running into the obstacles such as rock of invading the push pipe path domain in jacking construction and can't continue jacking, the air pressure balanced-type tool pipe can be taked to remove obstacles in the lower artificial pipe of air pressure protection, and efficient is very low, and has larger security risk; Slurry-water balance type and earth pressure balanced push pipe need take to manage outer method of removing obstacles, the general blasting procedure that adopts, deficiency is the excavation scarfing cinder that needs the large degree of depth of large size after explosion, and then the materials such as Cast-in-situ Piles in Sand-filling, soil are to enough overburden covers, backfill material also need reinforcement process closely knit to guarantee, can proceed the push pipe operation, workload is very large.If the buildings or structures of fragile structure are arranged in the push pipe short range, explosion and excavation all can't be implemented.
Summary of the invention
The present invention is limited by site condition in pipe-jacking project in order to solve, can not adopt and remove in pipe and the technical problem of the obstacles such as blasting elimination rock, and provide punching in a kind of jacking construction to break the rock method of removing obstacles.
The scheme that the present invention solves the problems of the technologies described above is: the broken rock of the punching in a kind of jacking construction method of removing obstacles, concrete steps are: push pipe runs into the obstacles such as rock can't continue jacking the time, at first adopt the Punching Borehole Cast-in-place Concrete Pile machine, the rock of invading in push pipe jacking path domain is carried out the punching fragmentation, adopt again circulating mud that broken rock ballast is discharged, then recharge the low-intensity mortar in the punching closely knit, then by continuing jacking after push pipe slicing slurry obturator.
Adopt the Punching Borehole Cast-in-place Concrete Pile machine, carry out punching when broken to invading rock in push pipe jacking path domain, the broken rock degree of depth of single pile punching should be lower than 500mm at the bottom of the push pipe pipe, after reaching this degree of depth, and recycling circulating mud clear hole deslagging;
Recharge the intensity≤5MPa of mortar in the punching.
When push pipe is DN2600 pipe, dispose for guaranteeing that in the scope of push pipe transverse section, rock all is broken, select the Percussion Piles of three row's diameter 2.0m, and be quincuncial arrangement, pile spacing 1.8m, interlock 0.2m, array pitch 1.0m; When adopting the punching of Punching Borehole Cast-in-place Concrete Pile machine, undertaken by jumping the stake order, subpunch odd number stake position, broken rock complete and backfill closely knit after, then rush even number stake position.
The invention has the beneficial effects as follows: the present invention can use very common concrete pouring of punched hole piles equipment to abolish the obstacles such as subsurface rock that hinder jacking construction, Environmental Conditions less-restrictive.The present invention is simple and practical, and it is convenient to implement, and broken rock cost is low, can drop into simultaneously multiple devices, and the duration of removing obstacles is short.The present invention utilizes the broken rock of punching to remove obstacles first in jacking construction, and its successful experience can instruct engineering construction of the same type.
Description of drawings
Fig. 1 is the Percussion Piles Construction Arrangement schematic diagram that the present invention adopts.
Embodiment
Below in conjunction with instantiation, further set forth the mode of execution of patent of the present invention.Should be understood that these examples only to be used for explanation patent of the present invention and be not used in the scope that limits patent of the present invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read patent instruction of the present invention, these equivalent form of values fall within the application's appended claims limited range equally.
Move in conjunction with Xiamen collection apricot sea wall original water conduit and change the construction of removing obstacles of the broken rock of engineering punching, specific implementation method of the present invention is described.
At first fill a construction site, the broken rock construction of Punching Borehole Cast-in-place Concrete Pile machine beginning punching in place in the broken rock of need location.The broken rock degree of depth of single pile punching should be lower than 500mm at the bottom of the push pipe pipe, after reaching this degree of depth, utilizes circulating mud clear hole deslagging, adopts catheterized reperfusion low-intensity mortar (not higher than 5MPa) to be full of a hole.According to the stake position and the sequence of construction that arrange in advance, after one by one the rock in the push pipe scope being abolished totally, push pipe can begin to cut the low-intensity mortar, recovers jacking.
The present invention is directed to the technological difficulties that in jacking construction, the broken rock of punching is removed obstacles and run into, Adopts measure is:
Layout, the sequence of construction of (1) selection in stake footpath, a position
This push pipe is DN2600 pipe 1, disposes for guaranteeing that in the scope of push pipe transverse section, rock all is broken, and selects the Percussion Piles 2 of three row's diameter 2.0m, quincuncial arrangement, and pile spacing L=1.8m, interlock 0.2m, array pitch S=1.0m(sees Fig. 1).Should control the size in reasonable Arrangement stake position, guarantee again not stay the dead angle.Punching must be undertaken by jumping the stake order, subpunch odd number stake position, broken rock complete and backfill closely knit after, then rush even number stake position.
(2) stake hole packing material
After the broken rock of punching, the stake hole is must backfill closely knit, and the interlocking pile punching for even number provides essential condition on the one hand, prevents from going here and there hole or deflection, will guarantee also that on the other hand push pipe is to be in uniformly densely in backfill matter when being passed by lower end, stake hole, and safety is successfully passed.
After the punching end, stake is the larger mud of proportion in the hole, and directly Cast-in-situ Piles in Sand-filling or soil meeting generation suspension phenomenon, at the bottom of can't sinking to the hole, more be difficult to closely knit.Backfilling material must possess certain degree of compaction and intensity, deflection and string hole do not occur in the time of just guaranteeing even number stake punching, but its intensity again can not be too high, adds to the difficulties with exempt from customs examination push pipe jacking in the future.Consider rear working strength not higher than the mortar of 5MPa as stake hole backfilling material.
(3) tool pipe protection
Before the broken rock of the stake position punching of next-door neighbour's tool pipe, the pipe jacking tool pipe 1m left and right that need shrink back is in order to avoid block stamp damages tool pipe during the broken rock of punching.When tool pipe retreats, close sludge drainage pipe, by stretching into 1 slurry injection pipe in intake pipe, extend out to outside tool pipe by the cutter head panel space, fill thixotropic slurry to the position slip casting of anterior blank part, also fill with thixotropic slurry in the muddy water storehouse, and keep mud pressure higher than the upper water earth pressure, prevent soil body landslide.
This stake is punching is complete when recharging the low-strength cement mortar, and mortar can flow to tool pipe by the cavity.For preventing that mortar from wrapping tool pipe, when this has poured into the low-strength cement mortar and has reached initial set, rotate and elastic cutterhead, tool pipe and backfill are separated.
Claims (4)
1. the broken rock of the punching in the jacking construction method of removing obstacles, it is characterized in that, concrete steps are: push pipe runs into the obstacles such as rock can't continue jacking the time, at first adopt the Punching Borehole Cast-in-place Concrete Pile machine, the rock of invading in push pipe jacking path domain is carried out the punching fragmentation, adopt again circulating mud that broken rock ballast is discharged, then recharge the low-intensity mortar in the punching closely knit, then by continuing jacking after push pipe slicing slurry obturator.
2. the broken rock of the punching in the jacking construction according to claim 1 method of removing obstacles, it is characterized in that: described employing Punching Borehole Cast-in-place Concrete Pile machine, when the rock in intrusion push pipe jacking path domain is carried out the punching fragmentation, the broken rock degree of depth of single pile punching should be lower than 500mm at the bottom of the push pipe pipe, after reaching this degree of depth, recycling circulating mud clear hole deslagging.
3. the broken rock of the punching in the jacking construction according to claim 1 method of removing obstacles is characterized in that: the described intensity≤5MPa that recharges mortar in the punching.
4. the broken rock of the punching in the jacking construction according to claim 1 method of removing obstacles, it is characterized in that: when push pipe is the DN2600 pipe, dispose for guaranteeing that in the scope of push pipe transverse section, rock all is broken, selecting three row's diameters is the Percussion Piles of 2.0m, and be quincuncial arrangement, the Percussion Piles spacing is 1.8m, and array pitch is 1.0m; When adopting the punching of Punching Borehole Cast-in-place Concrete Pile machine, undertaken by jumping the stake order, subpunch odd number stake position, broken rock complete and backfill closely knit after, then rush even number stake position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104044861A CN103162011A (en) | 2011-12-08 | 2011-12-08 | Punching rock breaking barrier cleaning method in pipe-jacking construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104044861A CN103162011A (en) | 2011-12-08 | 2011-12-08 | Punching rock breaking barrier cleaning method in pipe-jacking construction |
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| Publication Number | Publication Date |
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| CN103162011A true CN103162011A (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011104044861A Pending CN103162011A (en) | 2011-12-08 | 2011-12-08 | Punching rock breaking barrier cleaning method in pipe-jacking construction |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104099932A (en) * | 2014-07-10 | 2014-10-15 | 郑州市市政工程总公司 | Breaking device and breaking method of pile head of underwater concrete pile |
| CN104315251A (en) * | 2014-09-25 | 2015-01-28 | 济南城建集团有限公司 | Manual pipe jacking construction method for earth and rock combined geological conditions |
| CN109989409A (en) * | 2019-03-22 | 2019-07-09 | 上海长凯岩土工程有限公司 | Building enclosure soil layer underground cavity is removed obstacles method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2685570Y (en) * | 2004-03-08 | 2005-03-16 | 广东省基础工程公司 | Pipe-jacking tunneller |
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2011
- 2011-12-08 CN CN2011104044861A patent/CN103162011A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2685570Y (en) * | 2004-03-08 | 2005-03-16 | 广东省基础工程公司 | Pipe-jacking tunneller |
Non-Patent Citations (4)
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| 宴小玲等: "《城区复杂环境中围护结构施工技术》", 《隧道建设》 * |
| 李学幼: "《塑性混凝土冲孔灌注咬合桩在海滨人工填石层施工止水帷幕的应用》", 《建筑技术》 * |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104099932A (en) * | 2014-07-10 | 2014-10-15 | 郑州市市政工程总公司 | Breaking device and breaking method of pile head of underwater concrete pile |
| CN104099932B (en) * | 2014-07-10 | 2016-08-17 | 郑州市市政工程总公司 | A kind of underwater concrete filling pile pile crown abolish devices and methods therefor |
| CN104315251A (en) * | 2014-09-25 | 2015-01-28 | 济南城建集团有限公司 | Manual pipe jacking construction method for earth and rock combined geological conditions |
| CN109989409A (en) * | 2019-03-22 | 2019-07-09 | 上海长凯岩土工程有限公司 | Building enclosure soil layer underground cavity is removed obstacles method |
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Application publication date: 20130619 |