CN115045345A - Secant pile leakage drainage device and leakage drainage method thereof - Google Patents
Secant pile leakage drainage device and leakage drainage method thereof Download PDFInfo
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- CN115045345A CN115045345A CN202210716247.8A CN202210716247A CN115045345A CN 115045345 A CN115045345 A CN 115045345A CN 202210716247 A CN202210716247 A CN 202210716247A CN 115045345 A CN115045345 A CN 115045345A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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Abstract
The meshed pile leakage drainage device comprises an outer drill shaft and an inner rotary core, wherein a first shaft hole with a one-way opening is formed in the outer drill shaft, and a first drainage hole communicated with the first shaft hole is formed in the outer surface of the outer drill shaft; a second shaft hole with a one-way opening is formed in the inner rotating core, and a second drainage hole communicated with the second shaft hole is formed in the outer surface of the inner rotating core; the inner rotating core can be inserted from the first shaft hole of the outer drilling shaft and can rotate along the axis of the outer drilling shaft, and the first drainage hole and the second drainage hole can be communicated or sealed in a staggered mode through the relative rotation of the inner rotating core and the outer drilling shaft. The advantage is, can effectively reduce the flow of leaking the mouth of a river under the condition of destroying plain pile structure as far as possible through hydrophobic means, keeps the shutoff to go on fast effectively.
Description
Technical Field
The invention relates to the technical field of secant pile leakage treatment, in particular to a secant pile leakage drainage device and a leakage drainage method thereof.
Background
Occlusive piles have become more and more commonly applied to the building envelope of underground engineering, especially under complex geological conditions or ultra-deep and ultra-large foundation pits. In the construction process, the leakage of the secant pile belongs to a common emergency situation and needs to be quickly dealt with, referring to fig. 1, the secant pile structure in the common secant pile mainly comprises a meat pile 1a and a vegetable pile 2a which are mutually meshed, the meat pile 1a comprises steel bars and concrete, and the vegetable pile 2a belongs to a cement-soil mixing pile or a jet grouting pile and is a position where the leakage point often appears; the existing method aims at the water leakage position and carries out rapid plugging through an accelerator, water glass and the like, but if the water flow at the water leakage position is too large, the plugging agent cannot be solidified in time and can be washed away by water, and the plugging effect cannot be realized.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a secant pile leakage drainage device and a leakage drainage method thereof, wherein the flow rate of a water leakage hole can be temporarily reduced, and leakage can be treated in an auxiliary manner.
The invention is realized by the following technical scheme:
the meshed pile leakage drainage device comprises an outer drill shaft and an inner rotary core, wherein a first shaft hole with a one-way opening is formed in the outer drill shaft, and a first drainage hole communicated with the first shaft hole is formed in the outer surface of the outer drill shaft; a second shaft hole with a one-way opening is formed in the inner rotating core, and a second drainage hole communicated with the second shaft hole is formed in the outer surface of the inner rotating core; the inner rotating core can be inserted from the first shaft hole of the outer drilling shaft and can rotate along the axis of the outer drilling shaft, and the first drainage hole and the second drainage hole can be communicated or sealed in a staggered mode through the relative rotation of the inner rotating core and the outer drilling shaft.
As the improvement of the scheme, a sand separation net is arranged between the outer wall of the inner rotary core and the inner wall of the outer drill shaft, so that sand and stone can be effectively isolated, and only water body flowing out is kept.
As an improvement of the above scheme, the first hydrophobic hole is a circular hole; the second hydrophobic holes are strip-shaped holes, the length direction of the second hydrophobic holes is parallel to the axis of the internal rotating core, and the width of the second hydrophobic holes is larger than or equal to the diameter of the first hydrophobic holes.
As an improvement of the scheme, one end of the outer drill shaft, which is far away from the opening, is provided with a conical head, the outer surface of the outer drill shaft is provided with drill blades, and the first drain holes are arranged among the drill blades and are spirally and uniformly distributed along the axis.
As an improvement of the scheme, the inner rotary core radially protrudes towards the end face of the opening to form an annular protrusion, and the outer diameter of the annular protrusion is larger than or equal to that of the outer drill shaft.
The method for draining the leakage of the occlusive piles comprises the following steps:
s1, finding that the water seepage situation of the occlusive pile occurs, and determining that the water seepage situation is caused by perforation of a plain pile of the occlusive pile;
s2, determining the position of a water leakage hole, drilling a drain hole obliquely above the water leakage hole, and penetrating a water-bearing layer in a soil layer to ensure that only a water body flows out of the drain hole;
and S3, reducing the flow of the water leakage hole, and plugging the water leakage hole by an accelerator.
As an improvement of the above solution, the drainage hole in S2 is drilled by using any one of the above snap pile seepage drainage devices, using the following steps:
s21, rotating the inner rotating core to enable the first drain hole and the second drain hole to be staggered and not communicated;
s22, drilling a non-closed end of a drilling shaft outside the secant pile leakage drainage device from the lower part of a water leakage hole upwards in an inclined mode until most of first drainage holes in the outer rotating shaft reach a water-bearing layer in a soil layer;
s23, rotating the internal rotating core to enable the first hydrophobic hole to be communicated with the second hydrophobic hole, and enabling the water body in the aquifer to flow out through the first hydrophobic hole, the second hydrophobic hole and the second shaft hole in sequence.
The invention has the following beneficial effects:
1. the flow of the water leakage port can be effectively reduced under the condition that the plain pile structure is damaged as little as possible through the hydrophobic device, and the plugging is kept to be performed quickly and effectively.
2. Hydrophobic device simple structure, convenient operation is equipped with hydrophobic hole open-close structure, can close hydrophobic passageway when boring into, and a large amount of water outflows when avoiding drilling cause the construction inconvenient, opens hydrophobic passageway and drainage after targetting in place, also is equipped with the structure of isolated grit at hydrophobic device to a large amount of sand and soil follow the water outflow, cause soil layer structure to destroy.
3. The drainage method has simple steps and low requirements on operators, reduces the operation difficulty and ensures the stability and effectiveness of the leakage repair process.
Drawings
FIG. 1 is a schematic view of the structure of a hydrophobic device according to the present invention.
Fig. 2 is an exploded view of the hydrophobic device of the present invention.
FIG. 3 is a schematic cross-sectional view of a hydrophobic means of the present invention.
FIG. 4 is a schematic view of the state of the hydrophobic process of the present invention.
FIG. 5 is a flow chart of the hydrophobic method of the present invention.
Description of the reference numerals: the outer drill shaft 1, the inner rotary core 2, the first shaft hole 3, the first hydrophobic hole 4, the second shaft hole 5, the second hydrophobic hole 6, the sand separation net 7, the conical head 8, the drill blade 9, the annular bulge 10, the hydrophobic device 11, the aquifer 12, the soil layer 13, the hydrophobic hole 14 and the water leakage hole 15.
Detailed Description
Example 1
As shown in fig. 1 to 3, the secant pile leakage drainage device comprises an outer drill shaft 1 and an inner rotary core 2, wherein a first shaft hole 3 with a one-way opening is formed in the outer drill shaft 1, and a first drainage hole 4 is formed in the outer surface of the outer drill shaft 1 and communicated with the first shaft hole 3; a second shaft hole 5 with a one-way opening is arranged in the inner rotary core 2, and a second hydrophobic hole 6 communicated with the second shaft hole 5 is arranged on the outer surface of the inner rotary core 2; the inner rotary core 2 can be inserted from the first shaft hole 3 of the outer drill shaft 1 and can rotate along the axis of the outer drill shaft, and the communication or staggered sealing of the first drainage hole 4 and the second drainage hole 6 can be realized through the relative rotation of the inner rotary core 2 and the outer drill shaft 1. The outer wall of inner rotary core 2 and the inner wall of outer drill spindle 1 between be equipped with and separate sand screen 7, can effectively completely cut off the grit, keep only the water outflow. The first hydrophobic hole 4 is a round hole; the second hydrophobic holes 6 are strip-shaped holes, the length direction of the second hydrophobic holes is parallel to the axis of the internal rotating core 2, and the width of the second hydrophobic holes is larger than or equal to the diameter of the first hydrophobic holes 4. The end, deviating from the opening, of the outer drill shaft 1 is provided with a conical head 8, the outer surface of the outer drill shaft 1 is provided with drill blades 9, and the first drain holes 4 are arranged among the drill blades 9 and are spirally and uniformly distributed along the axis. The inner rotary core 2 is radially protruded with an annular protrusion 10 towards the end surface of the opening, and the outer diameter of the annular protrusion 10 is larger than or equal to that of the outer drill shaft 1.
Example 2
As shown in fig. 4 and 5, the method for draining the leakage of the snap pile comprises the following steps:
s1, finding that the secant pile has water seepage, and determining that the secant pile is perforated and water seepage.
S2, determining the position of the water leakage hole 15, drilling a drain hole 14 below the water leakage hole 15 in an obliquely upward direction to penetrate through the aquifer 12 in the soil layer 13, and ensuring that only water flows out of the drain hole 14; the drainage hole 14 is drilled by using the bite pile leak drainage device 11 using the following steps:
s21, rotating the internal rotating core 2 to enable the first water drainage hole 4 and the second water drainage hole 6 to be staggered and not communicated.
S22, drilling the unclosed end of the secant pile leakage drainage device 11 of the outer drilling shaft 1 obliquely upwards from the lower part of the water leakage hole 15 until most of the first drainage holes 4 on the outer drilling shaft reach the aquifer 12 in the soil layer 13.
S23, the internal rotating core 2 is rotated to enable the first hydrophobic hole 4 to be communicated with the second hydrophobic hole 6, and the water body in the aquifer 12 flows out through the first hydrophobic hole 4, the second hydrophobic hole 6 and the second shaft hole 5 in sequence.
And S3, reducing the flow of the water leakage holes 15, and plugging the water leakage holes 15 by an accelerator.
S4, the drainage device 11 is pulled out to plug the drainage hole 14, and the drainage hole 14 is far smaller than the water leakage hole 15 and is controllable in shape rule, so that plugging difficulty is low.
The above detailed description is specific to possible embodiments of the present invention, and the embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The meshed pile leakage drainage device is characterized by comprising an outer drill shaft and an inner rotary core, wherein a first shaft hole with a one-way opening is formed in the outer drill shaft, and a first drainage hole communicated with the first shaft hole is formed in the outer surface of the outer drill shaft; a second shaft hole with a one-way opening is formed in the inner rotating core, and a second drainage hole communicated with the second shaft hole is formed in the outer surface of the inner rotating core; the inner rotating core can be inserted from the first shaft hole of the outer drilling shaft and can rotate along the axis of the outer drilling shaft, and the first drainage hole and the second drainage hole can be communicated or sealed in a staggered mode through the relative rotation of the inner rotating core and the outer drilling shaft.
2. The spud leakage hydrophones of claim 1, wherein a sand screen is provided between the outer wall of the inner rotary core and the inner wall of the outer drill shaft.
3. The bite pile leakage drain of claim 1, wherein said first drain hole is a circular hole; the second hydrophobic holes are strip-shaped holes, the length direction of the second hydrophobic holes is parallel to the axis of the internal rotating core, and the width of the second hydrophobic holes is larger than or equal to the diameter of the first hydrophobic holes.
4. The apparatus according to claim 1, wherein the outer drill shaft has a conical head at an end thereof facing away from the opening, and drilling blades are provided on an outer surface of the outer drill shaft, and the plurality of first drainage holes are provided between the drilling blades and are arranged in a spiral manner along the axis.
5. A bite pile leakage trap according to claim 1, wherein said inner rotary core projects radially towards the open end face with an annular projection having an outer diameter greater than or equal to the outer diameter of the outer drill shaft.
6. The method for draining the leakage of the occlusive piles is characterized by comprising the following steps of:
s1, finding that the water seepage situation of the occlusive pile occurs, and determining that the water seepage situation is caused by perforation of a plain pile of the occlusive pile;
s2, determining the position of a water leakage hole, drilling a drain hole obliquely above the water leakage hole, and penetrating a water-bearing layer in a soil layer to ensure that only a water body flows out of the drain hole;
and S3, reducing the flow of the water leakage hole, and plugging the water leakage hole by an accelerating agent.
7. A method for snap pile leak drainage according to claim 6, wherein the drainage holes in S2 are drilled using the snap pile leak drainage apparatus of any one of claims 1 to 5, using the steps of:
s21, rotating the inner rotating core to enable the first drain hole and the second drain hole to be staggered and not communicated;
s22, drilling a non-closed end of a drilling shaft outside the secant pile leakage drainage device from the lower part of a water leakage hole upwards in an inclined mode until most of first drainage holes in the outer rotating shaft reach a water-bearing layer in a soil layer;
s23, rotating the internal rotating core to enable the first hydrophobic hole to be communicated with the second hydrophobic hole, and enabling the water body in the aquifer to flow out through the first hydrophobic hole, the second hydrophobic hole and the second shaft hole in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210716247.8A CN115045345A (en) | 2022-06-22 | 2022-06-22 | Secant pile leakage drainage device and leakage drainage method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210716247.8A CN115045345A (en) | 2022-06-22 | 2022-06-22 | Secant pile leakage drainage device and leakage drainage method thereof |
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| Publication Number | Publication Date |
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| CN115045345A true CN115045345A (en) | 2022-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210716247.8A Pending CN115045345A (en) | 2022-06-22 | 2022-06-22 | Secant pile leakage drainage device and leakage drainage method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209923956U (en) * | 2019-03-19 | 2020-01-10 | 中铁二十四局集团江苏工程有限公司 | Water stopping device for foundation pit water leakage |
| CN111945757A (en) * | 2020-08-14 | 2020-11-17 | 中国电建集团贵阳勘测设计研究院有限公司 | Upward-inclined self-advancing type slope drainage steel pipe structure and construction method |
| CN213508530U (en) * | 2020-07-30 | 2021-06-22 | 盐城幼儿师范高等专科学校 | Earth work structure beneficial to drainage |
| CN113846661A (en) * | 2021-11-02 | 2021-12-28 | 胡雷业 | Foundation pit side wall leakage treatment device |
| US20220120052A1 (en) * | 2020-08-28 | 2022-04-21 | Zhejiang University City College | Anchor rod for positioned grouting suitable for prevention and control of engineering seepage damage and construction method thereof |
-
2022
- 2022-06-22 CN CN202210716247.8A patent/CN115045345A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209923956U (en) * | 2019-03-19 | 2020-01-10 | 中铁二十四局集团江苏工程有限公司 | Water stopping device for foundation pit water leakage |
| CN213508530U (en) * | 2020-07-30 | 2021-06-22 | 盐城幼儿师范高等专科学校 | Earth work structure beneficial to drainage |
| CN111945757A (en) * | 2020-08-14 | 2020-11-17 | 中国电建集团贵阳勘测设计研究院有限公司 | Upward-inclined self-advancing type slope drainage steel pipe structure and construction method |
| US20220120052A1 (en) * | 2020-08-28 | 2022-04-21 | Zhejiang University City College | Anchor rod for positioned grouting suitable for prevention and control of engineering seepage damage and construction method thereof |
| CN113846661A (en) * | 2021-11-02 | 2021-12-28 | 胡雷业 | Foundation pit side wall leakage treatment device |
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