CN212405086U - Disposal and detection structure for karst cave under rock-socketed pile base - Google Patents
Disposal and detection structure for karst cave under rock-socketed pile base Download PDFInfo
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- CN212405086U CN212405086U CN202020926215.7U CN202020926215U CN212405086U CN 212405086 U CN212405086 U CN 212405086U CN 202020926215 U CN202020926215 U CN 202020926215U CN 212405086 U CN212405086 U CN 212405086U
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- slip casting
- detection
- hole
- karst cave
- solution cavity
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- 238000001514 detection method Methods 0.000 title claims abstract description 62
- 238000007569 slipcasting Methods 0.000 claims abstract description 25
- 238000010276 construction Methods 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000013589 supplement Substances 0.000 claims description 7
- 238000005553 drilling Methods 0.000 abstract description 9
- 239000004568 cement Substances 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 239000012466 permeate Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model relates to an underneath cave of laying rock-socketed pile foundation deals with and detects structure belongs to rock-socketed pile foundation bottom processing construction field. Including solution cavity detection slip casting hole, detect supplementary slip casting hole and curtain slip casting hole, solution cavity detection slip casting hole is used for surveying the slip casting to the lower part of foundation pile, it is used for surveying the solution cavity effect after the slip casting to detect supplementary slip casting hole and slip casting, direct drilling solution cavity detection slip casting hole in the foundation pile center when foundation pile construction is accomplished and is not under construction superstructure and survey, when construction is accomplished foundation pile superstructure thing, survey the slip casting hole with solution cavity and set up the periphery at the pile foundation, it sets up the edge in solution cavity both sides to detect supplementary slip casting hole, curtain slip casting hole sets up in the solution cavity edge outside. The utility model discloses can carry out accurate processing to the solution cavity under the socketed pile basement to can its processing effect of accurate detection.
Description
Technical Field
The utility model belongs to the construction field is handled at the bottom of the rock-socketed pile foundation, a detection structure is dealt with to the below cave of rock-socketed pile foundation.
Background
The karst is widely distributed in China, and with the large-scale construction of highway engineering, a bridge which is an important component of the highway engineering cannot be inevitably constructed in a karst area. When a bridge in a karst area is used, the bearing capacity of a foundation is insufficient and the stability is reduced due to the influence of a karst cave formed by the karst action at the bottom of a pile foundation, so that the problems of uneven settlement of a pier, cracking of a bridge slab and the like are caused. With the large-scale adoption of bridge pile foundations in karst areas and the construction of simply supported continuous bridge bridges, the exploration of pile foundations cannot reach 100%, the problem of karst cave at the bottom of the pile foundations due to leakage is increased, the constructed pile foundations are removed by means which are not applicable in terms of construction period and cost, and it is very important to process the built karst cave under the rock-socketed pile foundations and detect the disposal effect of the karst cave.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a karst cave is dealt with and is detected structure under rock-socketed pile base can accurately handle the karst cave under the rock-socketed pile base to can accurately detect its effect of dealing with.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a karst cave under rock-socketed pile basement is dealt with and is detected structure, survey supplementary injected hole and curtain injected hole including the karst cave, the grouting is surveyed to the karst cave, it is used for surveying the slip casting to the lower part of pile foundation to detect supplementary injected hole, it is used for detecting the karst cave effect after the slip casting to detect supplementary injected hole, direct karst cave in the pile foundation center surveys the injected hole and surveys when pile foundation construction is accomplished not the superstructure, when the pile foundation superstructure thing is accomplished in the construction, survey the injected hole setting in the periphery of pile foundation with the karst cave, it sets up the edge in the karst cave both sides to detect supplementary injected hole, curtain injected hole sets up in the karst cave edge outside.
Furthermore, when the karst cave detection grouting hole is drilled, the steel pipe with the hole is timely sent into the karst cave detection grouting hole after the hole is drilled.
And further, detecting and supplementing the steel sleeve with the hole which is placed in the grouting hole.
Further, the curtain grouting holes surround the karst cave to form a grid structure.
Further, the bottom of the karst cave detection grouting hole is 5m to the bottom of the pile.
Furthermore, the detection supplementary grouting holes are located at the edges of the two sides of the karst cave, and the detection supplementary grouting holes are located in the range of 0.5m of the two sides of the karst cave edge.
Further, the curtain grouting hole is 3m away from the edge of the karst cave.
The beneficial effects of the utility model reside in that:
the utility model relates to a solution cavity deals with and detects structure under socketed pile basement, simple structure, convenient operation uses manpower and materials sparingly, can accurately handle socketed pile basement solution cavity under to can accurately detect its effect of dealing with.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is a cross-sectional view of the present invention;
fig. 2 is a top view of the present invention.
Reference numerals:
1. grouting holes for karst cave detection; 2. detecting supplementary grouting holes, 3 and curtain grouting holes; 4. a pile foundation; 5. and (4) cave filling.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Referring to fig. 1-2, a disposal and detection structure for a karst cave under a rock-socketed pile base includes a karst cave detection grouting hole 1, a detection supplementary grouting hole 2, and a curtain grouting hole 3. The karst cave detection grouting hole 1 is used for detecting the lower part of the pile foundation 4 and grouting is carried out when needed. And the detection supplementary grouting holes 2 are used for detecting the karst cave filling effect after the karst cave detection grouting holes 1 detect and perform grouting, and performing supplementary grouting if necessary.
The karst cave detection grouting holes 1 are positioned according to the engineering progress degree, different karst cave detection grouting holes 1 are arranged according to different construction progresses. When the upper structure of the pile foundation 4 is not constructed, the karst cave detection grouting hole 1 is directly drilled in the center of the pile foundation 4 for detection, and the drilling depth of the karst cave detection grouting hole 1 reaches the position of 5m from the bottom of the pile. When the upper structure of the pile foundation 4 is constructed, the karst cave detection grouting holes 1 are arranged on the periphery of the pile foundation 4. When the karst cave detection grouting hole 1 is drilled, the steel pipe with the holes is timely sent into the karst cave detection grouting hole 1 after drilling, and the karst cave 5 detection and later-stage grouting are prevented from being influenced by hole collapse.
In order to detect the grouting reinforcement effect in the karst cave 5 after the karst cave detection grouting holes 1 are grouted and backfilled, the karst cave 5 is ensured to be filled with cement slurry, two (the specific quantity is determined according to the volume of the karst cave 5) detection supplementary grouting holes 2 are drilled in the range of 0.5m on the two sides of the edge of the karst cave 5, the distance of the detection supplementary grouting holes 2 is based on the situation that the karst cave 5 is not punched, meanwhile, the later-stage high-pressure cement slurry is ensured to permeate into the karst cave 5, and the steel sleeve with the hole is placed in the detection supplementary grouting holes 2.
In order to ensure the grouting reinforcement effect, the curtain grouting holes 3 are arranged at the position 3m away from the edge of the karst cave 5, the curtain grouting holes 3 form a grid structure, and the curtain grouting holes 3 are grouted by adopting a rotary jet grouting process.
The disposal method of the utility model comprises the following steps;
step one, drilling:
when the upper structure is not constructed, drilling a hole at the top center of the pile foundation 4 by using a geological drill, drilling a karst cave detection grouting hole 1, wherein the distance between the bottom of the karst cave detection grouting hole 1 and the pile bottom from the drilling depth is 5m, and lowering the position of the karst cave 5 by using a geological radar detector after the drilling is finished to detect parameters such as volume and the like;
after the upper structure such as a pier stud is constructed, a drilling detection mode of the periphery of a pile foundation 4 is adopted, after a karst cave 5 is drilled to detect a grouting hole 1, a steel pipe with holes is timely sent into the karst cave 5 to detect the grouting hole 1, and the karst cave 5 is prevented from being influenced by hole collapse to detect and later grouting;
in order to detect the grouting reinforcement effect in the karst cave 5 and ensure that the karst cave 5 is filled with cement slurry, the detection supplement grouting holes 2 are drilled in the range of 0.5m on the two sides of the edge of the karst cave 5, the distance of the detection supplement grouting holes 2 is based on not penetrating the karst cave 5, meanwhile, the later high-pressure cement slurry is ensured to permeate into the karst cave 5, and the steel sleeve with the holes is placed in the detection supplement grouting holes 2.
Step two, grouting: determining the position of the karst cave 5, adopting a detection hole grouting form after the size is determined, changing a detection hole of the karst cave detection grouting hole 1 into a grouting hole, and timely injecting sufficient high-pressure cement slurry;
step three, detection: after grouting is completed for a certain time to achieve an expected effect, detecting whether the underlying karst cave 5 is filled compactly or not by detecting low-quality radar detection equipment below the supplementary grouting hole 2;
step four, supplementary grouting: after the karst cave 5 is ensured to be filled compactly after detection, the karst cave detection grouting holes 1 are supplemented with grouting and filled compactly, and the situation of incompact is found, and the grout is ensured to flow out along the rock cracks through detecting the high-pressure grouting supplement of the detection holes of the supplement grouting holes 2;
step five, curtain grouting: in order to ensure the grouting reinforcement effect, the grids are drawn within a range of 3m from the edge of the karst cave 5, and grouting is carried out on the curtain grouting holes 3 by adopting a rotary jet grouting process.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (7)
1. A rock-socketed pile base underburden deals with detects structure which characterized in that: including solution cavity detection slip casting hole (1), detect supplementary slip casting hole (2) and curtain slip casting hole (3), solution cavity detection slip casting hole (1) is used for surveying the slip casting to the lower part of pile foundation (4), it is used for detecting solution cavity (5) effect after the slip casting to detect supplementary slip casting hole (2), direct solution cavity detection slip casting hole (1) is bored at pile foundation (4) center when pile foundation (4) construction completion is not under construction superstructure and is surveyed, when having constructed completion pile foundation (4) superstructure thing, survey solution cavity detection slip casting hole (1) and set up the periphery in pile foundation (4), it sets up the edge in solution cavity (5) both sides to detect supplementary slip casting hole (2), curtain slip casting hole (3) set up in solution cavity (5) edge outside.
2. The rock-socketed pile foundation underburden disposal detection structure of claim 1, characterized in that: when the karst cave detection grouting hole (1) is drilled, the steel pipe with the hole is timely sent into the karst cave detection grouting hole (1) after the hole is drilled.
3. The rock-socketed pile foundation underburden disposal detection structure of claim 1, characterized in that: a steel sleeve with a hole is placed in the detection supplementary grouting hole (2) downwards.
4. The rock-socketed pile foundation underburden disposal detection structure of claim 1, characterized in that: the curtain grouting holes (3) surround the karst cave (5) to form a grid structure.
5. The rock-socketed pile foundation underburden disposal detection structure of claim 1, characterized in that: the bottom of the karst cave detection grouting hole (1) is 5m to the bottom of the pile.
6. The rock-socketed pile foundation underburden disposal detection structure of claim 1, characterized in that: the detection supplement grouting holes (2) are located at the edges of the two sides of the karst cave (5), and the detection supplement grouting holes (2) are located in the range of 0.5m of the two sides of the karst cave (5).
7. The rock-socketed pile foundation underburden disposal detection structure of claim 1, characterized in that: the distance between the curtain grouting hole (3) and the edge of the karst cave (5) is 3 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020926215.7U CN212405086U (en) | 2020-05-27 | 2020-05-27 | Disposal and detection structure for karst cave under rock-socketed pile base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020926215.7U CN212405086U (en) | 2020-05-27 | 2020-05-27 | Disposal and detection structure for karst cave under rock-socketed pile base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212405086U true CN212405086U (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020926215.7U Withdrawn - After Issue CN212405086U (en) | 2020-05-27 | 2020-05-27 | Disposal and detection structure for karst cave under rock-socketed pile base |
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| Country | Link |
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| CN (1) | CN212405086U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111485544A (en) * | 2020-05-27 | 2020-08-04 | 中交路桥建设有限公司 | Disposal detection structure and method for karst cave under rock-socketed pile base |
| CN114135295A (en) * | 2021-11-15 | 2022-03-04 | 中铁工程装备集团(天津)有限公司 | Multifunctional karst cave detection equipment of shield machine and working method thereof |
-
2020
- 2020-05-27 CN CN202020926215.7U patent/CN212405086U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111485544A (en) * | 2020-05-27 | 2020-08-04 | 中交路桥建设有限公司 | Disposal detection structure and method for karst cave under rock-socketed pile base |
| CN111485544B (en) * | 2020-05-27 | 2024-08-20 | 中交路桥建设有限公司 | Rock-socketed pile foundation underlying karst cave disposal detection structure and method |
| CN114135295A (en) * | 2021-11-15 | 2022-03-04 | 中铁工程装备集团(天津)有限公司 | Multifunctional karst cave detection equipment of shield machine and working method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20210126 Effective date of abandoning: 20240820 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20210126 Effective date of abandoning: 20240820 |