CN111173014A - Sealed pocket type precipitation well wall of a well stagnant water structure of slip casting - Google Patents
Sealed pocket type precipitation well wall of a well stagnant water structure of slip casting Download PDFInfo
- Publication number
- CN111173014A CN111173014A CN202010071462.8A CN202010071462A CN111173014A CN 111173014 A CN111173014 A CN 111173014A CN 202010071462 A CN202010071462 A CN 202010071462A CN 111173014 A CN111173014 A CN 111173014A
- Authority
- CN
- China
- Prior art keywords
- pipe
- well
- grouting
- sealing bag
- water stopping
- Prior art date
- 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.)
- Pending
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/16—Restraining of underground water by damming or interrupting the passage of underground water by placing or applying sealing substances
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0006—Plastics
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2450/00—Gaskets
- E02D2450/10—Membranes
- E02D2450/105—Membranes impermeable
- E02D2450/106—Membranes impermeable for liquids
Abstract
The invention relates to a grouting sealing bag type dewatering well wall water stopping structure.A top end and a bottom end of at least one sealing bag are fixed on a well pipe; and at least one grouting pipe extends into the well pipe from the upper port, transversely penetrates through a wall hole reserved on the well pipe through a bypass valve arranged on the grouting pipe, and is communicated with the inside of the sealing bag. The construction quality of the invention is reliable: the grouting pipe is arranged in the well casing, the quality is reliable, and the quality problem caused by binding gaps between the sealing bag and the well casing and between the sealing bag and the grouting pipe when the grouting pipe is arranged outside the well casing and bound together is effectively avoided. The well wall water stop is reliable: compared with the traditional well wall water stopping process, the scheme extrudes the well wall and the surrounding soil body through expansion after grouting of the sealing bag, and ensures the reliability of well wall water stopping through higher grouting pressure.
Description
Technical Field
The invention relates to a dewatering well, in particular to a grouting sealing bag type dewatering well wall water stopping structure, and belongs to the technical field of underground water dewatering wells.
Background
In the existing dewatering well construction technology, the common processes are hole forming, well casing lowering, gravel filling, water stopping, well washing, well forming, water pumping or recharging. The water stopping measure of the well wall is to backfill high-quality clay balls with certain thickness, and the well wall grouting can be implemented under the condition of higher requirement.
In the existing well wall water stopping measures, the quality of clay balls is difficult to control, and if the sand content is high, the water stopping and blocking are easy to fail; the grouting effect is not easy to guarantee and cannot be checked because the flow of the grouting liquid in the soil body cannot be controlled. In the prior art, a sealing bag type grouting water stopping structure is adopted, such as Chinese patent documents with publication number CN 209873806U and publication number 31/12/2019. However, the grouting pipe needs to extend into the sealing bag, and when the sealing bag is sealed and bound, a gap is easy to appear between the grouting pipe and the well wall, so that slurry flows out from the gap, and the specified grouting pressure cannot be reached.
Disclosure of Invention
The invention aims to provide a grouting sealing bag type dewatering well wall water stopping structure which can realize water pumping through sealing and inflating a well pipe. In order to realize fixed-point water stopping and plugging of the well wall, a hole is formed in the specified depth of the well pipe, a sealing bag with certain flexibility is bound, and grouting of the sealing bag is realized through the hole in the well pipe by the grouting pipe. The grouting pipe is connected with the opening through a one-way valve. In order to enhance the water-stopping and plugging effect of the well wall, a plurality of sections of sealing bags can be adopted, and the sealing bags are grouted at different depths of the well pipe. When a multi-section sealing bag is adopted, the grouting pipe is connected with the opening by a three-way one-way valve.
The invention adopts the following technical scheme:
a kind of slip casting seals the well wall water stopping structure of the bag type precipitation well, the upper and lower both ends of at least one sealed bag 4 are fixed on well casing 1; at least one grouting pipe 3 extends into the well pipe from an upper port, and the grouting pipe 3 transversely penetrates through a wall hole reserved on the well pipe 1 through a bypass valve arranged on the grouting pipe and is communicated with the inside of the sealing bag 4.
Preferably, the water outlet pipe 2 is arranged in the middle of the well casing, and the upper end of the water outlet pipe 2 extends out of the well casing and is used as a drainage channel for inflating and draining water into the well casing.
Preferably, the well pipe is a metal pipe or a plastic pipe, and the sections are connected by mechanical connection of threads or buckles or gluing, hot melting and welding.
Furthermore, the water outlet pipe adopts a metal pipe or a plastic pipe; the grouting pipe is a galvanized pipe or a plastic pipe.
Preferably, the sealing bag is made of a water-impermeable or weak-permeable high-strength tensile material, is in a cylindrical shape with a certain length and two open ends, is sleeved outside the well pipe, and is fixed on the well pipe at the upper end and the lower end by adopting metal hoops; when the well pipe is fixed, a rubber pad is arranged between the sealing bag and the well pipe.
Preferably, still include prefabricated trompil connecting pipe 8, prefabricated trompil connecting pipe 8 internal diameter slightly is greater than the well casing external diameter, adopts screw thread or viscose to be connected with the well casing, and its lateral wall is equipped with an at least trompil, and the trompil position is reserved on with the well casing the wall hole position corresponds, the bypass valve passes simultaneously the trompil with the wall hole.
Preferably, two or more sealing bags 4 are arranged on the well pipe at intervals, the bypass valve corresponding to the lowermost sealing bag is an elbow one-way valve 7, and the rest is a three-way one-way valve 6.
Preferably, slip casting pipe 3 has two or many branches, and the upper end is through slip casting house steward and grouting pump 9 intercommunication, and grouting pump 9 has pressure detection and control function.
Furthermore, the prefabricated open pore connecting pipe 8 adopts a prefabricated open pore short pipe with the length of not less than 100mm, the inner diameter of which is slightly larger than the outer diameter of the well pipe and the wall thickness of which is at least 5 mm; the number of the openings is more than 1, and the openings are fixedly connected with the one-way valve by threads or gluing.
The invention has the beneficial effects that:
1) the construction quality is reliable: the grouting pipe is arranged in the well casing, the quality is reliable, and the quality problem caused by binding gaps between the sealing bag and the well casing and between the sealing bag and the grouting pipe when the grouting pipe is arranged outside the well casing and bound together is effectively avoided.
2) The well wall water stop is reliable: compared with the traditional well wall water stopping process, the scheme extrudes the well wall and the surrounding soil body through expansion after grouting of the sealing bag, and ensures the reliability of well wall water stopping through higher grouting pressure.
3) The well casing adopts the prefabricated trompil connecting pipe alone of trompil in advance in trompil department, can conveniently install in batches and dismantle, combines tee bend check valve and 90 elbow check valve's application, design benefit, and the reliability of structure and sealed is high.
Drawings
Fig. 1 is a perspective view of the grouting sealing bag type dewatering well wall water stopping structure of the invention.
In the figure, 1, a well pipe, 2, a water outlet pipe, 3, a grouting pipe, 4, a sealing bag, 5, a metal hoop, 6, a three-way check valve, 7.90-degree elbow check valves, 8, a prefabricated perforated connecting pipe, 9, a grouting pump and 10, a pressure gauge are arranged.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1, in the grouting sealing bag type dewatering well wall water stopping structure, the upper end and the lower end of at least one sealing bag 4 are fixed on a well pipe 1; at least one grouting pipe 3 extends into the well pipe from an upper port, and the grouting pipe 3 transversely penetrates through a wall hole reserved on the well pipe 1 through a bypass valve arranged on the grouting pipe and is communicated with the inside of the sealing bag 4.
In this embodiment, see fig. 1, the well pipe is provided with a water outlet pipe 2 in the middle, and the upper end of the water outlet pipe 2 extends out of the well pipe and is used as a drainage channel for inflating and draining water into the well pipe. In the attached drawings, the upper end of the water outlet pipe 2 is omitted from drawing, and actually needs to extend out of the well pipe.
In this embodiment, the well casing is made of metal or plastic tubing, and the sections are mechanically connected by threads or snap-fit connection or glued, heat fused, welded connection. The water outlet pipe adopts a metal pipe or a plastic pipe; the grouting pipe is a galvanized pipe or a plastic pipe.
In the embodiment, the sealing bag is made of a waterproof or weakly-permeable high-strength tensile material, is in a cylindrical shape with a certain length and two open ends, is sleeved outside the well pipe, and is fixed on the well pipe at the upper end and the lower end by using metal hoops; when the well pipe is fixed, a rubber pad is arranged between the sealing bag and the well pipe. As shown in fig. 1.
In this embodiment, see fig. 1, the system further comprises a prefabricated open-pore connecting pipe 8, the inner diameter of the prefabricated open-pore connecting pipe 8 is slightly larger than the outer diameter of the well casing, the prefabricated open-pore connecting pipe is connected with the well casing by screw threads or adhesive, the side wall of the prefabricated open-pore connecting pipe is provided with at least one open pore, the position of the open pore corresponds to the position of the wall hole reserved on the well casing, and the bypass valve simultaneously penetrates through the open pore.
In this embodiment, two or more sealing bags 4 (two are shown in fig. 1) are arranged on the well casing at intervals, the bypass valve corresponding to the lowermost sealing bag is an elbow one-way valve 7, and the rest is a three-way one-way valve 6.
In this embodiment, referring to fig. 1, the grouting pipe 3 has two or more branches, the upper end of the grouting pipe is communicated with a grouting pump 9 through a grouting main pipe, and the grouting pump 9 has a pressure detection and control function.
In this embodiment, referring to fig. 1, the prefabricated open-pore connecting pipe 8 adopts a prefabricated open-pore short pipe with the length not less than 100mm, the inner diameter slightly larger than the outer diameter of the well pipe and the wall thickness of at least 5 mm; the number of the openings is more than 1, and the openings are fixedly connected with the one-way valve by threads or gluing.
The following examples are given for illustrative purposes:
the diameter of a borehole of the dewatering well is 120 mm-180 mm, and the well pipe 1 is a PVC pipe with the diameter of 60 mm-100 mm and is connected by a joint through gluing. The grouting pipe 3 is a galvanized pipe with the diameter of 20 mm-40 mm and is connected through threads. The prefabricated perforated connecting pipe 8 is a PVC pipe with the length of 100-150 mm and the inner diameter of 60-100 mm, two small holes are prefabricated in the center positions of two sides, the diameter of each small hole is the same as that of the one- way valves 6 and 7, the three-way one-way valve 6 and the 90-degree elbow one-way valve 7 are sleeved into the small holes, and the small holes are sealed and fixed in an adhesive mode. The one- way valves 6 and 7 connect the grouting pipe 3 and the well casing 1 in turn, wherein the grouting pipe 3 should be inserted into the well casing 1 in advance, as shown in figure 1. The sealing bags 4 are made of terylene/polypropylene fabrics with the diameter of 200 mm-300 mm, each section of sealing bag is cut to the length of 2 m-3 m, the sealing bags are sleeved into the well pipe 1 to the position of the prefabricated perforated connecting pipe 8, and the two ends of the sealing bags are fastened by screws by utilizing metal anchor ears 5. After the well pipe 1 is installed, the water outlet pipe 2 is a PVC pipe with the diameter of 20 mm-30 mm and is inserted into the well pipe 1. The grouting pipe 3 is connected to a grouting pump 9. And after the grouting structure is completely installed, filling clay between the drill hole and the well wall. And starting a grouting pump, stopping grouting when the grouting pressure reaches the specified pressure, and reversely screwing down the grouting pipe on the uppermost part, so that repeated grouting is facilitated.
While the preferred embodiments of the present invention have been described, those skilled in the art will appreciate that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a sealed pocket type precipitation well wall of a well stagnant water structure of slip casting which characterized in that:
the upper end and the lower end of at least one sealing bag (4) are fixed on the well pipe (1);
at least one grouting pipe (3) extends into the well pipe from an upper port, and the grouting pipe (3) transversely penetrates through a wall hole reserved on the well pipe (1) through a bypass valve arranged on the grouting pipe and is communicated with the inside of the sealing bag (4).
2. The grouting sealing bag type dewatering well wall water stopping structure of claim 1, characterized in that: and the middle part of the well pipe is provided with a water outlet pipe (2), and the upper end of the water outlet pipe (2) extends out of the well pipe and is used as a drainage channel for inflating and draining water in the well pipe.
3. The grouting sealing bag type dewatering well wall water stopping structure of claim 1, characterized in that: the well pipe is a metal pipe or a plastic pipe, and all sections are connected through mechanical connection of threads or buckles or adhesive, hot melting and welding.
4. The grouting sealing bag type dewatering well wall water stopping structure of claim 3, characterized in that: the well pipe is made of plastic pipe, and all the sections are connected through adhesive or hot melting.
5. The grouting sealing bag type dewatering well wall water stopping structure of claim 2, characterized in that: the water outlet pipe adopts a metal pipe or a plastic pipe; the grouting pipe is a galvanized pipe or a plastic pipe.
6. The grouting sealing bag type dewatering well wall water stopping structure of claim 1, characterized in that: the sealing bag is made of a waterproof or weakly-permeable high-strength tensile material, is in a cylindrical shape with a certain length and two open ends, is sleeved outside the well pipe, and is fixed on the well pipe at the upper end and the lower end by adopting metal hoops; when the well pipe is fixed, a rubber pad is arranged between the sealing bag and the well pipe.
7. The grouting sealing bag type dewatering well wall water stopping structure of claim 1, characterized in that: still include prefabricated trompil connecting pipe (8), prefabricated trompil connecting pipe (8) internal diameter slightly is greater than the well casing external diameter, adopts screw thread or viscose to be connected with the well casing, and its lateral wall is equipped with an at least trompil, reserves on trompil position and the well casing the wall hole position corresponds, the bypass valve passes simultaneously the trompil with the wall hole.
8. The grouting sealing bag type dewatering well wall water stopping structure of claim 1, characterized in that: two or more sealing bags (4) are arranged on the well pipe at intervals, the bypass valve corresponding to the lowermost sealing bag is an elbow one-way valve (7), and the rest is a three-way one-way valve (6).
9. The grouting sealing bag type dewatering well wall water stopping structure of claim 1, characterized in that: slip casting pipe (3) have two or many branch roads, and the upper end is through slip casting house steward and grouting pump (9) intercommunication, and grouting pump (9) have pressure detection and control function.
10. The grouting sealing bag type dewatering well wall water stopping structure of claim 7, characterized in that: the prefabricated open-pore connecting pipe (8) adopts a prefabricated open-pore short pipe with the length of not less than 100mm, the inner diameter of which is slightly larger than the outer diameter of the well pipe and the wall thickness of which is at least 5 mm; the number of the openings is more than 1, and the openings are fixedly connected with the one-way valve by threads or gluing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010071462.8A CN111173014A (en) | 2020-01-21 | 2020-01-21 | Sealed pocket type precipitation well wall of a well stagnant water structure of slip casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010071462.8A CN111173014A (en) | 2020-01-21 | 2020-01-21 | Sealed pocket type precipitation well wall of a well stagnant water structure of slip casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111173014A true CN111173014A (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010071462.8A Pending CN111173014A (en) | 2020-01-21 | 2020-01-21 | Sealed pocket type precipitation well wall of a well stagnant water structure of slip casting |
Country Status (1)
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| CN (1) | CN111173014A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120109135A (en) * | 2011-03-28 | 2012-10-08 | 윤상준 | Apparatus for injecting grout using a carbon fiber reinforcement pipe and method thereof |
| CN102979478A (en) * | 2012-12-05 | 2013-03-20 | 山东大学 | Water stopping device for water inrush borehole drilling |
| CN104131555A (en) * | 2014-07-21 | 2014-11-05 | 冠鲁建设股份有限公司 | Covered water-permeable reinforced concrete pipe gravel grouting pile and construction method thereof |
| CN104727319A (en) * | 2015-04-07 | 2015-06-24 | 兰州理工大学 | Slope self-drainage anchor rod and construction method |
| CN204827354U (en) * | 2015-08-10 | 2015-12-02 | 中国矿业大学 | Built -in slip casting hole sealing device |
| CN109629566A (en) * | 2019-01-16 | 2019-04-16 | 宁夏大学 | A kind of vacuum drainage anchor pole and its construction method |
| CN109629573A (en) * | 2019-01-15 | 2019-04-16 | 中交哈尔滨地铁投资建设有限公司 | A kind of pouch slip casting borehole wall water sealing structure |
-
2020
- 2020-01-21 CN CN202010071462.8A patent/CN111173014A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120109135A (en) * | 2011-03-28 | 2012-10-08 | 윤상준 | Apparatus for injecting grout using a carbon fiber reinforcement pipe and method thereof |
| CN102979478A (en) * | 2012-12-05 | 2013-03-20 | 山东大学 | Water stopping device for water inrush borehole drilling |
| CN104131555A (en) * | 2014-07-21 | 2014-11-05 | 冠鲁建设股份有限公司 | Covered water-permeable reinforced concrete pipe gravel grouting pile and construction method thereof |
| CN104727319A (en) * | 2015-04-07 | 2015-06-24 | 兰州理工大学 | Slope self-drainage anchor rod and construction method |
| CN204827354U (en) * | 2015-08-10 | 2015-12-02 | 中国矿业大学 | Built -in slip casting hole sealing device |
| CN109629573A (en) * | 2019-01-15 | 2019-04-16 | 中交哈尔滨地铁投资建设有限公司 | A kind of pouch slip casting borehole wall water sealing structure |
| CN109629566A (en) * | 2019-01-16 | 2019-04-16 | 宁夏大学 | A kind of vacuum drainage anchor pole and its construction method |
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Application publication date: 20200519 |
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