CN109403353A - A kind of processing method of diaphram wall collapse hole - Google Patents
A kind of processing method of diaphram wall collapse hole Download PDFInfo
- Publication number
- CN109403353A CN109403353A CN201811358407.6A CN201811358407A CN109403353A CN 109403353 A CN109403353 A CN 109403353A CN 201811358407 A CN201811358407 A CN 201811358407A CN 109403353 A CN109403353 A CN 109403353A
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- China
- Prior art keywords
- collapse hole
- hole area
- wall
- drilling
- collapse
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/08—Removing obstacles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
Abstract
The invention discloses a kind of processing method of diaphram wall collapse hole, the first step determines position；Second step, drilling；Third step observes situation in collapse hole area；4th step, the 5th step, the 6th step clean the soil body and residue in collapse hole area；Whether the 7th step is observed in collapse hole area and being cleaned out；8th step backfills collapse hole area；9th step, the detection backfill effect after concrete formation.The present invention above collapse hole area by drilling, collapse hole area situation is observed in drilling, and the soil body in collapse hole area is cleared up by high pressure water, and it is backfilled out of drilling using concrete, loose earth collapsing in periphery causes the continuity of ground-connecting-wall to be destroyed and is difficult to the problem for handling and repairing during overcoming continuous wall trench underground, the method construction technology is simple, construction period is short, existing structure is disturbed small, the quality problems during ground-connecting-wall trenching construction can be effectively treated, the construction quality for improving ground-connecting-wall has ensured going on smoothly for ground-connecting-wall construction.
Description
Technical field
The present invention relates to base pit engineering and field of urban rail more particularly to a kind of processing of diaphram wall collapse hole
Method.
Background technique
The mode of transportation that subway is big as a kind of freight volume, travelling speed is fast, low energy consumption, comfort is good, becomes and solves me
The preferred option of the major Urban Traffic Jam Based of state.The foundation pit of subway station generally uses cut and cover method or digging method construction,
Avalanche and the infiltration of underground water occur for foundation pit soil body in digging process in order to prevent, and the big more options of construction party are connected using underground
Continuous wall carries out supporting to foundation pit.In order to enable ground-connecting-wall to play the effect of its earth-retaining and the antiseepage that intercepts water well, ground-connecting-wall is needed
Have good continuity and integrality.
Diaphram wall needs to excavate stratum using grooving equipment during grooving.And digging process can be right
Stratum generates disturbance, causes stresses re-distribution, if the geological conditions of slotting position is poor, underground water rich content or week
Side building is intensive, and ground-connecting-wall cell wall is easy to cause to collapse.This phenomenon is generally referred to as collapse hole in engineering.When underground is continuous
Collapse hole occurs during grooving for wall, and the soil body collapses the continuity for making ground-connecting-wall in ground-connecting-wall wall and integrality by broken
It is bad, the effect of earth-retaining and antiseepage cannot be played completely so as to cause ground-connecting-wall, the final construction safety for influencing foundation pit.For this
Situation, traditional method are usually to cut the diaphram wall section that collapse hole region has poured completion, when the distribution of collapse hole area relatively divides
Whole section of ground-connecting-wall need to be cut when scattered, then poured again.Not only process is tedious for traditional processing method, processing cost is high, construction
Long in time limit, manpower and material resources demand is big and causes a large amount of wastes of engineering material.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, the diaphram wall in soft layer is solved in construction work
Processing and reparation problem after collapse hole occurs in journey, provide a kind of method for clearing up the soil body and waste residue in ground-connecting-wall collapse hole region.
This method is small to built ground-connecting-wall disturbance, can quickly repair collapse hole area, guarantee the continuity and integrality of ground-connecting-wall.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
The present invention is a kind of processing method of diaphram wall collapse hole, and the first step, periphery is loose during ground-connecting-wall grooving
Collapse hole occurs for soft soil, and testing staff has found and tentatively detects general collapse hole position；
Second step is vertically drilled to collapse hole region with concrete drilling machine from ground-connecting-wall upper surface, and piercing behind collapse hole area will be micro-
Type thermal camera protrudes into drilling；
Third step, the case where ground-connecting-wall inner wall and collapse hole area are checked by the display connecting with miniature thermal camera,
Determine whether drilling pierces collapse hole position, while the accurate position for determining collapse hole area and size, then by miniature thermal camera
It removes；
4th step builds the reservoir for filling clear water at away from drilling 3-4m, two conduits is extend into down and are collapsed
Porose area rushes wherein a conduit, as flushing pipe, another is used as exhaust pipe, and the lower end of exhaust pipe extend into collapse hole area bottom
The lower end for washing pipe is higher than the lower end of exhaust pipe；
5th step is connected to the first slush pump from injecting high pressure water, collapse hole area in reservoir in collapse hole area in flushing pipe
The soil body waste residue mud mixture of mobility is formed under the impact of high pressure water flow, the second slush pump is connected on exhaust pipe,
The mud mixture in collapse hole region is extracted out by exhaust pipe using the second slush pump；
6th step will connect reservoir work when the mud mixture for observing that exhaust pipe is released starts to become limpid
The first slush pump made is closed, and is stopped conveying clear water toward collapse hole area, is continued with the second slush pump for the residual in collapse hole region
Water extraction；
7th step protrudes into miniature thermal camera in drilling after the water in collapse hole area exhausts, and determines the collapse hole area soil body
After waste residue cleans up, miniature thermal camera, flushing pipe and exhaust pipe are removed and drilled；
8th step is backfilled collapse hole area and drilling using cast-in-place concrete, is vibrated using concrete vibrator,
Prevent bubble cavity；
9th step is detected using Ultrasonic Nondestructive instrument to concrete after simultaneously coagulation forming is completed in concreting
Filling effect detected, it is ensured that the density of Concrete Filled.
Further, miniature thermal camera uses the miniature thermal camera of purple light electronics T71.
Further, the size of the reservoir is 3m × 3m × 1m.
Further, the flushing pipe and the material of exhaust pipe are PVC-U.
Further, to the collapse hole area and the interior cast-in-place C40 concrete that drills
Compared with prior art, advantageous effects of the invention are as follows:
The present invention observes collapse hole area situation by drilling above collapse hole area in drilling, and is collapsed by high pressure water cleaning
The soil body in porose area, and concrete backfill is carried out out of drilling, periphery loose earth collapses during overcoming continuous wall trench underground
Collapsing causes the continuity of ground-connecting-wall to be destroyed and is difficult to the problem for handling and repairing, and the method construction technology is simple, the construction period
It is short, it is small to existing structure disturbance, the quality problems during ground-connecting-wall trenching construction can be effectively treated, improve ground-connecting-wall
Construction quality, ensured ground-connecting-wall construction go on smoothly.
Detailed description of the invention
The invention will be further described for explanation with reference to the accompanying drawing.
Fig. 1 is collapse hole area schematic diagram during ground-connecting-wall grooving；
Fig. 2 is drilling schematic diagram in ground-connecting-wall collapse hole area in the present invention；
Fig. 3 is to clean collapse hole area schematic diagram by flushing pipe and exhaust pipe in the present invention；
Fig. 4 be the present invention in cleaning finish and concrete backfill after final result schematic diagram；
Description of symbols: 1, it drills；2, flushing pipe；3, exhaust pipe；4, ground-connecting-wall periphery soil layer；5, ground-connecting-wall；6, it collapses
Porose area；7, reservoir；8, the first slush pump；9, the second slush pump.
Specific embodiment
As shown in Figure 1, a kind of specific embodiment of the processing method of diaphram wall collapse hole, is with one section of "-" type slot section
Example, design slot segment length are 6m, slot section depth 5m, wall thickness 800mm, ground-connecting-wall 5 (diaphram wall) strength grade of concrete
C40, longitudinal stress muscle are HRB400 grades of reinforcing bars of diameter 18mm, seepage-resistant grade p6.Ground-connecting-wall periphery soil layer 4 is with soft clay
Based on, groundwater level depth 7m.
The first step, after ground-connecting-wall 5 is constructed (concrete is not up to design strength during maintenance), ground-connecting-wall grooving
Collapse hole occurs for the periphery loose weak soil body in journey, and testing staff has found and tentatively detects general collapse hole position.
Second step, as shown in Fig. 2, with concrete drilling machine from ground-connecting-wall upper surface vertically to collapse hole area 6 drill, drilling it is straight
Diameter is 200mm, is protruded into miniature thermal camera in drilling 1 after substantially piercing collapse hole area 6, miniature thermal camera uses purple light
The miniature thermal camera of electronics T71.
Third step checks the feelings of ground-connecting-wall 5 inner wall and collapse hole area 6 by the display connecting with miniature thermal camera
Condition, determines whether drilling pierces collapse hole position, while the accurate position for determining collapse hole area and size, then by miniature infrared photography
Machine removes.
4th step, as shown in figure 3, building one at away from drilling 3-4m fills the reservoir 7 of clear water (in order to convenient in figure
It has been shown that, the ratio of reservoir are smaller), the size of the reservoir 7 is 3m × 3m × 1m, and two conduits are extend into collapse hole down
Area, the specification of two conduits are PVC-U material (caliber d=75mm, the thickness of pipe wall of GB/T13020-1991It leads
Length of tube L >=9m), wherein a conduit, as flushing pipe 2, another is used as exhaust pipe 3, and the lower end of exhaust pipe 3, which is extend into, collapses
6 bottom of porose area, the lower end of flushing pipe 2 are higher than the lower end of exhaust pipe 3.
5th step is connected to the first slush pump 8 from injecting high pressure water, collapse hole in reservoir 7 in collapse hole area 6 in flushing pipe
The soil body waste residue in area 6 forms the mud mixture of mobility under the impact of high pressure water flow, and the second mud is connected on exhaust pipe 3
Pump 9 is extracted out the mud mixture in collapse hole region by exhaust pipe 3 using the second slush pump 9.First slush pump and the second mud
The model of stock pump is 135QJ series.
6th step illustrates to collapse in collapse hole area when the mud mixture for observing that exhaust pipe is released starts to become limpid
The soil body to collapse substantially complete by cleaning, and the first slush pump for connecting reservoir work is closed, and stops conveying clear water toward collapse hole area,
It continues with the second slush pump and the residual water extraction in collapse hole region (is utilized into the soil in high pressure water main wash collapse hole region
Body, periphery soil layer is smaller by meeting is influenced, even if the periphery soil body occurs to collapse on a small quantity again, can also use concrete in next step
It is filled, so will not influence last treatment effect).
7th step protrudes into miniature thermal camera in drilling after the water in collapse hole area exhausts, and determines the collapse hole area soil body
After waste residue cleans up, miniature thermal camera, flushing pipe and exhaust pipe are removed and drilled.
8th step is shaken as shown in figure 4, being backfilled using cast-in-place C40 concrete to collapse hole area and drilling using concrete
It smashes device to vibrate, prevents bubble cavity.
9th step is detected using Ultrasonic Nondestructive instrument to concrete after simultaneously coagulation forming is completed in concreting
Filling effect detected, it is ensured that the density of Concrete Filled.
It handles other collapse hole regions in diaphragm wall one by one in this way, until whole collapse hole regions are cleaned, and completes
The processing and repair of diaphram wall collapse hole are completed in the filling of concrete.
Embodiment described above is only that preferred embodiment of the invention is described, and is not carried out to the scope of the present invention
It limits, without departing from the spirit of the design of the present invention, those of ordinary skill in the art make technical solution of the present invention
Various changes and improvements, should all fall into claims of the present invention determine protection scope in.
Claims (5)
1. a kind of processing method of diaphram wall collapse hole, it is characterised in that:
The first step, collapse hole occurs for the periphery loose weak soil body during ground-connecting-wall grooving, and testing staff has found and tentatively detects
General collapse hole position；
Second step is vertically drilled to collapse hole region with concrete drilling machine from ground-connecting-wall upper surface, and piercing behind collapse hole area will be miniature red
Outer video camera protrudes into drilling；
Third step, the case where checking ground-connecting-wall inner wall and collapse hole area by the display connecting with miniature thermal camera, determine
Whether drilling pierces collapse hole position, while the accurate position for determining collapse hole area and size, then removes miniature thermal camera；
4th step builds the reservoir for filling clear water at away from drilling 3-4m, two conduits is extend into collapse hole area down,
Wherein a conduit is used as exhaust pipe as flushing pipe, another, and the lower end of exhaust pipe extend into collapse hole area bottom, flushing pipe
Lower end is higher than the lower end of exhaust pipe；
5th step is connected to the first slush pump from injecting high pressure water, the soil in collapse hole area in reservoir in collapse hole area in flushing pipe
Body waste residue forms the mud mixture of mobility under the impact of high pressure water flow, and the second slush pump is connected on exhaust pipe, utilizes
Second slush pump is extracted out the mud mixture in collapse hole region by exhaust pipe；
6th step will connect reservoir work when the mud mixture for observing that exhaust pipe is released starts to become limpid
First slush pump is closed, and stops conveying clear water toward collapse hole area, is continued with the second slush pump and is taken out the residual water in collapse hole region
Out；
7th step protrudes into miniature thermal camera in drilling after the water in collapse hole area exhausts, and determines collapse hole area soil body waste residue
After cleaning up, miniature thermal camera, flushing pipe and exhaust pipe are removed and drilled；
8th step is backfilled collapse hole area and drilling using cast-in-place concrete, is vibrated, prevented using concrete vibrator
There is bubble cavity；
9th step fills out concrete using the detection of Ultrasonic Nondestructive instrument after simultaneously coagulation forming is completed in concreting
It fills effect to be detected, it is ensured that the density of Concrete Filled.
2. the processing method of diaphram wall collapse hole according to claim 1, it is characterised in that: miniature thermal camera is adopted
With the miniature thermal camera of purple light electronics T71.
3. the processing method of diaphram wall collapse hole according to claim 1, it is characterised in that: the size of the reservoir
For 3m × 3m × 1m.
4. the processing method of diaphram wall collapse hole according to claim 1, it is characterised in that: the flushing pipe and pump drainage
The material of pipe is PVC-U.
5. the processing method of diaphram wall collapse hole according to claim 1, it is characterised in that: to the collapse hole area and brill
Cast-in-place C40 concrete in hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811358407.6A CN109403353A (en) | 2018-11-15 | 2018-11-15 | A kind of processing method of diaphram wall collapse hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811358407.6A CN109403353A (en) | 2018-11-15 | 2018-11-15 | A kind of processing method of diaphram wall collapse hole |
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| Publication Number | Publication Date |
|---|---|
| CN109403353A true CN109403353A (en) | 2019-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811358407.6A Pending CN109403353A (en) | 2018-11-15 | 2018-11-15 | A kind of processing method of diaphram wall collapse hole |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110158662A (en) * | 2019-05-09 | 2019-08-23 | 中铁第四勘察设计院集团有限公司 | A kind of construction method and structure of diaphram wall seam preventing water leakage |
| CN115262651A (en) * | 2022-08-08 | 2022-11-01 | 上海建工集团股份有限公司 | Local self-collapsing water stopping method for underground continuous wall |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2550756Y (en) * | 2002-07-08 | 2003-05-14 | 阚小勇 | Observation instrument for steel bar in hole |
| CN203178504U (en) * | 2013-04-08 | 2013-09-04 | 煤炭工业太原设计研究院 | In-hole infrared visual detection device for coal mine goaf |
| CN106836214A (en) * | 2017-02-06 | 2017-06-13 | 姬凤玲 | Rotary digging bored concrete pile pile body collapse hole or the construction method of pile bottom sediment mass defect treatment |
-
2018
- 2018-11-15 CN CN201811358407.6A patent/CN109403353A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2550756Y (en) * | 2002-07-08 | 2003-05-14 | 阚小勇 | Observation instrument for steel bar in hole |
| CN203178504U (en) * | 2013-04-08 | 2013-09-04 | 煤炭工业太原设计研究院 | In-hole infrared visual detection device for coal mine goaf |
| CN106836214A (en) * | 2017-02-06 | 2017-06-13 | 姬凤玲 | Rotary digging bored concrete pile pile body collapse hole or the construction method of pile bottom sediment mass defect treatment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110158662A (en) * | 2019-05-09 | 2019-08-23 | 中铁第四勘察设计院集团有限公司 | A kind of construction method and structure of diaphram wall seam preventing water leakage |
| CN115262651A (en) * | 2022-08-08 | 2022-11-01 | 上海建工集团股份有限公司 | Local self-collapsing water stopping method for underground continuous wall |
| CN115262651B (en) * | 2022-08-08 | 2023-11-07 | 上海建工集团股份有限公司 | Underground diaphragm wall local self-collapsing type water stopping method |
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190301 |
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| RJ01 | Rejection of invention patent application after publication |