CN113445488A - Method for treating underground pipeline or karst cave - Google Patents
Method for treating underground pipeline or karst cave Download PDFInfo
- Publication number
- CN113445488A CN113445488A CN202110804024.2A CN202110804024A CN113445488A CN 113445488 A CN113445488 A CN 113445488A CN 202110804024 A CN202110804024 A CN 202110804024A CN 113445488 A CN113445488 A CN 113445488A
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- China
- Prior art keywords
- protective cylinder
- pile foundation
- clay
- outer protective
- casing
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
-
- 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
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a treatment method for underground pipelines or karst caves, and relates to the technical field of concrete pouring. The invention comprises the following steps: preparing materials, namely preparing an outer protective cylinder, an inner protective cylinder, a reinforcement cage, a concrete body and clay; installing an outer protective cylinder until the outer protective cylinder is installed to a preset position; clay backfilling, namely backfilling clay into the inner part of the outer protective cylinder to form a clay layer; digging holes, namely digging holes in the clay layer by using mechanical equipment to form pile foundation construction holes; preparing pile foundation molding; and (5) forming the pile foundation. The invention can effectively avoid the hole collapse phenomenon when the pile foundation construction hole is dug due to the influence of underground pipelines or karst caves when the construction is carried out under water, can effectively avoid the phenomenon that the pile cannot be formed due to the ash leakage phenomenon when the concrete is poured, effectively reduces the construction amount and improves the construction efficiency.
Description
Technical Field
The invention belongs to the technical field of concrete pouring, and particularly relates to a treatment method for an underground pipeline or a karst cave.
Background
Concrete, or cement concrete, is a composite material formed by bonding fine aggregate and coarse aggregate with cement and hardening the materials for a period of time;
when the concrete pile foundation is poured underwater, the pile foundation needs to be dug, then concrete is poured, but in the prior art, due to the fact that underground pipelines and karst caves exist during construction underwater, hole collapse easily occurs when the pile foundation construction hole is dug, the phenomenon of ash leakage cannot be effectively avoided when concrete is poured, and therefore the concrete cannot be formed into a pile, construction amount is large, and construction efficiency is poor.
Disclosure of Invention
The invention aims to provide a method for treating underground pipelines or karst caves, which aims to solve the existing problems: in the prior art, due to the underground pipeline and the karst cave, hole collapse is easy to occur when a pile foundation construction hole is dug, the phenomenon of ash leakage during concrete pouring can not be effectively avoided, the concrete can not be formed into a pile, the construction amount is large, and the construction efficiency is poor.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a method for treating underground pipelines or karst caves, which comprises the following steps:
preparing materials, namely preparing an outer protective cylinder, an inner protective cylinder, a reinforcement cage, a concrete body and clay;
installing an outer protective cylinder until the outer protective cylinder is installed to a preset position;
clay backfilling, namely backfilling clay into the inner part of the outer protective cylinder to form a clay layer;
digging holes, namely digging holes in the clay layer by using mechanical equipment to form pile foundation construction holes;
after the pile foundation construction hole is formed, the inner pile casing and the reinforcement cage are simultaneously placed into the pile foundation construction hole;
pouring the concrete body into the inner protecting cylinder, and standing until the concrete body is solidified into a pile foundation;
and pulling out the outer sleeve.
Further, the inner diameter of the outer protective cylinder is 0.3M larger than that of the inner protective cylinder.
Further, the preset position is that the bottom elevation of the outer pile casing is located at the 1M position of the lower end of the reinforced concrete drainage pipeline, and the top elevation of the outer pile casing is the top elevation of the pile foundation.
Further, the device used during the installation of the outer protective cylinder is a rotary digging and protective cylinder driving device.
Further, the inner casing is made of a steel plate, and the wall thickness of the steel plate is 5 mm.
Further, the mechanical equipment is a full slewing drilling machine.
Furthermore, the bottom elevation of the inner pile casing is located at the lower end 2M of the reinforced concrete drainage pipeline, and the top elevation of the inner pile casing is the top elevation of the pile foundation.
Further, the standing time of the concrete body is 24-48 hours.
The invention has the following beneficial effects:
the invention can effectively avoid the hole collapse phenomenon when the pile foundation construction hole is dug due to the influence of underground pipelines or karst caves when the construction is carried out under water, can effectively avoid the phenomenon that the pile cannot be formed due to the ash leakage phenomenon when the concrete is poured, effectively reduces the construction amount and improves the construction efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a method for treating an underground pipeline or a karst cave according to the present invention;
FIG. 2 is a schematic sectional view of a method for treating an underground pipeline or a karst cave according to the present invention;
fig. 3 is a schematic view of a method for treating an underground pipeline or a karst cave according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. an outer protective cylinder; 2. an inner protective cylinder; 3. a reinforcement cage; 4. a concrete body; 5. clay; 6. reinforced concrete drain line.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention is a method for treating an underground pipeline or a karst cave, comprising the following steps:
s1: preparing materials, namely preparing an outer protective cylinder 1, an inner protective cylinder 2, a reinforcement cage 3, a concrete body 4 and clay 5;
wherein, the inner diameter of the outer protective cylinder 1 is 0.3M larger than that of the inner protective cylinder 2;
s2: the outer protective cylinder 1 is installed, and the outer protective cylinder 1 is installed until the outer protective cylinder 1 is installed to a preset position;
wherein, the preset position is that the bottom elevation of the outer casing 1 is positioned at the lower end 1M of the reinforced concrete drainage pipeline 6, and the top elevation of the outer casing 1 is the top elevation of the pile foundation;
moreover, the equipment used when the outer protective cylinder 1 is installed is a rotary digging drive with a protective cylinder;
wherein, the inner protective cylinder 2 is made of a steel plate, and the wall thickness of the steel plate is 5 mm;
s3: backfilling clay 5, namely backfilling the clay 5 into the outer protective cylinder 1 to form a clay layer;
s4: digging holes, namely digging holes in the clay layer by using mechanical equipment to form pile foundation construction holes;
here, the mechanical apparatus may be a full slewing drilling machine;
s5: after the pile foundation construction hole is formed, the inner pile casing 2 and the reinforcement cage 3 are simultaneously placed into the pile foundation construction hole;
the bottom elevation of the inner protecting cylinder 2 is positioned at the lower end 2M of the reinforced concrete drainage pipeline 6, and the top elevation of the inner protecting cylinder 2 is the top elevation of the pile foundation;
s6: pouring the concrete body 4 into the inner casing 2, and standing until the concrete body 4 is solidified into a pile foundation;
the standing time of the concrete body 4 is 24-48 hours;
s7: the outer casing 1 is pulled out.
The invention can effectively avoid the hole collapse phenomenon when the pile foundation construction hole is dug due to the influence of underground pipelines or karst caves when the construction is carried out under water, can effectively avoid the phenomenon that the pile cannot be formed due to the ash leakage phenomenon when the concrete is poured, effectively reduces the construction amount and improves the construction efficiency.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. A method for treating underground pipelines or karst caves is characterized by comprising the following steps:
preparing materials, namely preparing an outer protective cylinder (1), an inner protective cylinder (2), a reinforcement cage (3) and a concrete body (4) and clay (5);
the outer protective cylinder (1) is installed, and the outer protective cylinder (1) is installed until the outer protective cylinder (1) is installed to a preset position;
backfilling clay (5), namely backfilling the clay (5) into the outer protective cylinder (1) to form a clay layer;
digging holes, namely digging holes in the clay layer by using mechanical equipment to form pile foundation construction holes;
after the pile foundation construction hole is formed, the inner pile casing (2) and the reinforcement cage (3) are simultaneously placed into the pile foundation construction hole;
pouring the concrete body (4) into the inner pile casing (2), and standing until the concrete body (4) is solidified into a pile foundation;
and pulling out the outer protective sleeve.
2. A method for underground pipeline or cavern treatment according to claim 1, wherein the inner diameter of the outer casing (1) is 0.3M larger than the inner diameter of the inner casing (2).
3. The underground pipeline or karst cave treatment method according to claim 1, wherein the predetermined position is that the bottom elevation of the outer casing (1) is located at the lower end 1M of the reinforced concrete drainage pipeline (6), and the top elevation of the outer casing (1) is the top elevation of the pile foundation.
4. The underground pipeline or karst cave treatment method according to claim 1, wherein the equipment used when the outer casing (1) is installed is a rotary excavating belt casing driver.
5. A method for underground pipeline or cavern treatment according to claim 1, characterized in that the inner casing (2) is made of steel plate with a wall thickness of 5 mm.
6. The underground pipeline or cavern processing method of claim 1, wherein the mechanical equipment is a full rotary drilling rig.
7. The underground pipeline or karst cave treatment method according to claim 1, wherein the bottom elevation of the inner casing (2) is located at the lower end 2M of the reinforced concrete drainage pipeline (6), and the top elevation of the inner casing (2) is the top elevation of a pile foundation.
8. The underground pipeline or cavern processing method according to claim 1, wherein the concrete body (4) is left standing for 24-48 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110804024.2A CN113445488A (en) | 2021-07-16 | 2021-07-16 | Method for treating underground pipeline or karst cave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110804024.2A CN113445488A (en) | 2021-07-16 | 2021-07-16 | Method for treating underground pipeline or karst cave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113445488A true CN113445488A (en) | 2021-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110804024.2A Pending CN113445488A (en) | 2021-07-16 | 2021-07-16 | Method for treating underground pipeline or karst cave |
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| CN (1) | CN113445488A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113106968A (en) * | 2021-04-20 | 2021-07-13 | 潍坊市万吉建筑工程有限公司 | Construction process of building foundation structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10219680A (en) * | 1997-02-10 | 1998-08-18 | Nishimatsu Constr Co Ltd | Work execution method of cast-in-place concrete pile |
| CN204000861U (en) * | 2014-08-13 | 2014-12-10 | 浙江天一交通建设有限公司 | Bored pile casing in a kind of water |
| CN107386277A (en) * | 2017-07-25 | 2017-11-24 | 中建五局土木工程有限公司 | Flexible foundation pile side friction isolation structure and construction method |
| CN108842802A (en) * | 2018-09-10 | 2018-11-20 | 山东省路桥集团有限公司 | Piles in Karst Region base construction method |
| CN109056706A (en) * | 2018-08-03 | 2018-12-21 | 上海宝冶集团有限公司 | A kind of Karst Geological Landscape poured pile base construction method |
| CN109797740A (en) * | 2019-03-27 | 2019-05-24 | 湖北中南岩土工程有限公司 | A kind of cast-in-situ bored pile and its construction method across underground civil defence structure |
| CN211421112U (en) * | 2019-10-31 | 2020-09-04 | 广西路建工程集团有限公司 | Double-casing pore-forming structure of karst geological pile foundation |
-
2021
- 2021-07-16 CN CN202110804024.2A patent/CN113445488A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10219680A (en) * | 1997-02-10 | 1998-08-18 | Nishimatsu Constr Co Ltd | Work execution method of cast-in-place concrete pile |
| CN204000861U (en) * | 2014-08-13 | 2014-12-10 | 浙江天一交通建设有限公司 | Bored pile casing in a kind of water |
| CN107386277A (en) * | 2017-07-25 | 2017-11-24 | 中建五局土木工程有限公司 | Flexible foundation pile side friction isolation structure and construction method |
| CN109056706A (en) * | 2018-08-03 | 2018-12-21 | 上海宝冶集团有限公司 | A kind of Karst Geological Landscape poured pile base construction method |
| CN108842802A (en) * | 2018-09-10 | 2018-11-20 | 山东省路桥集团有限公司 | Piles in Karst Region base construction method |
| CN109797740A (en) * | 2019-03-27 | 2019-05-24 | 湖北中南岩土工程有限公司 | A kind of cast-in-situ bored pile and its construction method across underground civil defence structure |
| CN211421112U (en) * | 2019-10-31 | 2020-09-04 | 广西路建工程集团有限公司 | Double-casing pore-forming structure of karst geological pile foundation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113106968A (en) * | 2021-04-20 | 2021-07-13 | 潍坊市万吉建筑工程有限公司 | Construction process of building foundation structure |
| CN113106968B (en) * | 2021-04-20 | 2022-03-29 | 山东国士建工集团有限公司 | Construction process of building foundation structure |
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Application publication date: 20210928 |