CN116623643A - Karst pipeline slow-release blocking method - Google Patents
Karst pipeline slow-release blocking method Download PDFInfo
- Publication number
- CN116623643A CN116623643A CN202310485637.3A CN202310485637A CN116623643A CN 116623643 A CN116623643 A CN 116623643A CN 202310485637 A CN202310485637 A CN 202310485637A CN 116623643 A CN116623643 A CN 116623643A
- Authority
- CN
- China
- Prior art keywords
- slurry
- release
- slow
- capsule
- grouting
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000000903 blocking effect Effects 0.000 title claims abstract description 11
- 239000002002 slurry Substances 0.000 claims abstract description 86
- 239000002775 capsule Substances 0.000 claims abstract description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 238000007711 solidification Methods 0.000 claims abstract description 21
- 230000008023 solidification Effects 0.000 claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 238000005553 drilling Methods 0.000 claims abstract description 10
- 238000002360 preparation method Methods 0.000 claims abstract description 9
- 238000013268 sustained release Methods 0.000 claims abstract description 7
- 239000012730 sustained-release form Substances 0.000 claims abstract description 7
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 11
- 229920000570 polyether Polymers 0.000 claims description 11
- 229920005862 polyol Polymers 0.000 claims description 11
- 150000003077 polyols Chemical class 0.000 claims description 11
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 11
- 238000004090 dissolution Methods 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 230000008961 swelling Effects 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000011835 investigation Methods 0.000 abstract description 3
- 238000005520 cutting process Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000000192 social effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
Abstract
The application relates to the technical field of investigation and engineering, and provides a karst pipeline slow-release blocking method. Comprises eight steps: drilling, flexible outer wrapping manufacturing, capsule manufacturing, slurry preparation, plugging device assembling and throwing, slurry slow-release solidification, grouting block release and secondary grouting. The specific flow is as follows: firstly, a karst pipeline is ascertained; manufacturing an expandable flexible outer package; making slow-release capsule and buoyancy capsule; preparing outer slurry and sustained-release slurry according to the size of the flexible outer wrapping and the solidification time; slowly-releasing slurry is injected into the slowly-releasing capsule, and the outer slurry is injected into the flexible outer package and is put into the karst pipeline along the drill hole; and after the solidification time is up, cutting off the traction rope to release the grouting block body, detecting the water flow of the karst pipeline, and repeating the operation if the water flow is larger than a preset value, otherwise, performing secondary grouting along the drill hole until the water flow is completely blocked. The scheme provided by the application has the beneficial effects that: the high-flow-rate and high-flow underground water of the karst pipeline can be quickly and effectively plugged.
Description
Technical Field
The application relates to the technical field of investigation technology and engineering, in particular to a karst pipeline slow-release blocking method.
Background
Along with the rapid development of national economy in China, the pace of resource development and traffic infrastructure construction is continuously accelerated, and underground engineering construction in the fields of mines, water conservancy and hydropower, roads, railways and the like is increasingly increased. The method has the advantages that the region of China is wide, the geological and landform conditions are complex and changeable, and large-scale sudden water gushing disasters are frequently encountered in underground engineering construction of karst regions, so that serious safety accidents and adverse social effects are caused. In areas where karst development is intense, water gushing disasters are difficult to control due to extremely complex geological conditions.
The grouting plugging method is one of the most common and effective treatment methods at present, grouting materials are injected into a rock-soil medium in various modes to strengthen the rock-soil body, plug a water burst channel is completed, and the stability and the impermeability of the rock-soil body are improved. The basic principle is that air and water in the medium are discharged through the slurry, and after the slurry is coagulated, a compact reinforcing body with certain strength is formed according to the self high strength and cementing characteristics of the slurry so as to meet the strength requirement or the water shutoff requirement. The grouting materials can be classified into cement-based grouting, chemical grouting and the like according to the properties of grouting materials.
However, due to the diversity and complexity of the geotechnical medium involved in the underground engineering, grouting reinforcement and water shutoff effects are often limited by medium characteristics and geological conditions, and particularly in karst areas with extremely complex geological conditions, the existing grouting method is difficult to solve the problem of blocking large-flow water surge of the karst pipeline. In addition, because the size of a common exploration hole is limited, large-diameter aggregate is difficult to throw into a karst pipeline, and fine-particle aggregate is very easy to take away along with large-flow underground water flow, so that large-range environmental influence and grouting material waste are caused.
Disclosure of Invention
The application aims at: overcomes the defects of the prior art and provides a karst pipeline slow release blocking method. The high-flow underground water of the karst pipeline can be quickly and effectively plugged, and the damage of karst water to tunnel excavation, ore body exploitation and the like is reduced.
In order to achieve the above object, the present application provides the following technical solutions:
a karst pipeline slow release blocking method is characterized in that: the method comprises eight steps, namely, a first step: drilling and a second step: and (3) flexible outer wrapping manufacturing and step three: and (3) capsule preparation, namely: preparing slurry and step five: assembling and putting the plugging device, and step six: slowly releasing and solidifying the slurry, and step seven: releasing grouting blocks, and carrying out step eight: performing secondary grouting;
the first step is as follows: drilling, namely, performing drilling in a karst area to be grouting, and reserving a drill hole of the detected karst pipeline for later plugging;
the second step is as follows: the flexible outer package manufacturing refers to manufacturing an expandable flexible outer package according to the size and depth of the pre-plugging karst pipeline; the flexible outer package is a columnar hollow flexible structure, can be expanded and deformed, and has a diameter D before expansion 1 Is smaller than the diameter of the drill hole, and the diameter D after expansion 2 Is larger than the local minimum diameter of the karst pipeline;
and step three: the capsule manufacturing means that a plurality of slow-release capsules and a plurality of buoyancy capsules are manufactured and fixed in a flexible outer package; the slow-release capsules are of hollow ellipsoidal capsule structures with openings and are made of polyvinyl alcohol films, and the dissolution time T of the slow-release capsules in water can be adjusted according to preset requirements 1 The method comprises the steps of carrying out a first treatment on the surface of the The buoyancy capsules are of hollow ellipsoidal structures with openings, and the inside of the buoyancy capsules can be filled with air to provide buoyancy for the flexible outer package, so that the flexible outer package is ensured to move along with underground water flow in the karst pipeline after slurry is solidified;
and step four: slurry preparation, which refers to the preparation of the slurry according to the size and the setting time T of the flexible outer wrapping 2 Preparing external slurry and sustained-release slurry; the outer slurry adopts polyether polyol and water, the slow-release slurry adopts toluene diisocyanate, the two materials can be kept in a liquid state under the condition of no mixing, and after the slow-release capsule is dissolved, the polyether polyol in the outer slurry and the slow-release slurry toluene diisocyanate are mixed to carry out expansion and solidification reaction, so that a high-strength plugging grouting block is formed;
step five, the said step: the plugging device is assembled and put in, which means that a plurality of slow release slurry filled with slow release slurry are slowly releasedThe capsule, a plurality of buoyancy capsules filled with air, a plugging device formed by flexible outer wrapping filled with outer slurry and a haulage rope are quickly assembled and put into a karst pipeline along a drill hole; a plurality of slow-release capsules filled with slow-release slurry, and the slow-release capsules are respectively filled with the predetermined mass W Sustained release Is sealed; a plurality of air-filled buoyancy capsules, which refer to a predetermined volume V Air-conditioner Is injected into the buoyancy capsule and sealed; the flexible outer package filled with the outer slurry means that a plurality of slow-release capsules filled with slow-release slurry and a plurality of buoyancy capsules filled with air are uniformly fixed in the flexible outer package by using a belt, and then the flexible outer package is injected with preset mass W Outer part And sealing, the mass ratio of polyether polyol to toluene diisocyanate is 1:1.05; one end of the haulage rope is fixed at the tail end of the plugging device, the other end of the haulage rope is fixed outside the drill hole, and the length of the haulage rope is longer than the distance from the drill hole to the karst pipeline, so that the haulage rope is used for hauling the plugging device to prevent the plugging device from moving along with underground water flow;
step six, the step is as follows: the slurry slowly-releasing solidification means that after the assembled plugging device enters the karst pipeline, the plugging device floats in underground water flow under the traction of the traction rope, the slowly-releasing capsule gradually dissolves under the soaking action of water in the external slurry, and the dissolving time T 1 After the internal slow-release slurry is released, the slow-release slurry and the external slurry are subjected to swelling and solidification reaction after meeting, and the solidification time is T 2 Forming a high-strength grouting block after reaching;
step seven, the method comprises the following steps: the grouting block is released, namely the traction rope is cut off after the high-strength grouting block is solidified, the grouting block moves along with underground water flow, and the karst pipeline is plugged when the grouting block moves to a place where the karst pipeline is narrower; detecting the water flow in the karst pipeline, and repeating the second to seventh steps if the water flow is greater than a preset value;
step eight, the following steps: and (3) secondary grouting, namely performing secondary grouting along the drill hole after the water flow in the karst pipeline is smaller than a preset value, so as to form a secondary grouting reinforcement body until the water flow is completely blocked.
Compared with the prior art, the technical scheme provided by the application has the following beneficial effects by way of example and not limitation: the application relates to the technical field of exploration and engineering, and can rapidly and effectively block high-flow-rate and large-flow underground water of a karst pipeline and reduce harm of water burst to rock-soil body excavation, ore body exploitation and the like.
Drawings
FIG. 1 is a technical flow chart of a karst pipeline slow release blocking method provided by an embodiment of the application;
FIG. 2 is a schematic view of a plugging device according to an embodiment of the present application;
fig. 3 shows a fifth step in the embodiment of the present application: a schematic diagram of the assembly and release state of the plugging device;
fig. 4 shows a sixth step in the embodiment of the present application: a state diagram of slow-release solidification of the slurry;
fig. 5 shows a seventh step in the embodiment of the present application: schematic diagram of the state of release of the grouting block;
fig. 6 shows a step eight in the embodiment of the present application: schematic diagram of the state of secondary grouting.
Description of the reference numerals
1 is a plugging device, 2 is a karst pipeline, 3 is a drill hole, 4 is a secondary grouting reinforcement body, and 5 is a haulage rope;
the flexible outer package 11 is a flexible outer package 12 is a slow release capsule, 13 is a buoyancy capsule, 14 is outer slurry, 15 is slow release slurry and 16 is air.
Detailed Description
The technical scheme provided by the application is further described below with reference to specific embodiments and attached drawings. The advantages and features of the present application will become more apparent in conjunction with the following description.
It should be noted that the embodiments of the present application are preferred embodiments, and are not intended to limit the present application in any way. The technical features or combinations of technical features described in the embodiments of the present application should not be regarded as isolated, and they may be combined with each other to achieve a better technical effect. Additional implementations are also included within the scope of the preferred embodiments of the present application and should be understood by those skilled in the art to which the embodiments of the present application pertain.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative and not limitative. Thus, other examples of the exemplary embodiments may have different values.
The drawings of the application are in a very simplified form and are not to scale precisely, but are for the purpose of illustrating embodiments of the application conveniently and clearly, and are not intended to limit the scope of the application. Any structural modification, proportional change or size adjustment should fall within the scope of the technical disclosure without affecting the effects and the achieved objects of the present application. And the same reference numbers appearing in the figures represent the same features or elements, as may be used in different embodiments.
Examples
Note that: and setting time T 2 Correspondingly, the polyvinyl alcohol film with adjustable water dissolution rate is manufactured for adjusting and controlling T 1 It is not a critical innovation of the technical solution of the present application that the prior art may be utilized, for example and not by way of limitation, such as CN2019105198011.
Designing the required solidification time T according to project conditions and investigation before implementation 2 The mass of polyether polyol and toluene diisocyanate is adjustable, and the ratio of the embodiment is 1:1.05.
As shown in fig. 1, a karst pipeline slow release blocking method is characterized in that: the method comprises eight steps, namely, a first step: drilling and a second step: and (3) flexible outer wrapping manufacturing and step three: and (3) capsule preparation, namely: preparing slurry and step five: assembling and putting the plugging device, and step six: slowly releasing and solidifying the slurry, and step seven: releasing grouting blocks, and carrying out step eight: performing secondary grouting;
step one: drilling, namely, performing drilling in a karst area to be grouting, and reserving a drill hole 3 of the detected karst pipeline 2 for later plugging;
step two:the flexible outer package manufacturing is to manufacture an expandable flexible outer package 11 according to the size and depth of the pre-plugging karst pipeline 2; the flexible outer package 11 is of a columnar hollow flexible structure and is made of a high-elasticity rubber film with the thickness of 3.0mm, the flexible outer package 11 can be expanded and deformed, and the diameter D before expansion is achieved 1 Is smaller than the diameter of the drill hole 3 by more than 5.0cm, and the diameter D after expansion 2 The volume expansion rate is more than 10% and the length L is generally 2.0m, which is more than 5.0cm larger than the local minimum diameter of the karst pipeline 2;
step three: the capsule preparation, namely, three slow release capsules 12 and two buoyancy capsules 13 are prepared and fixed in a flexible outer package 11; the three slow release capsules 12 are of a hollow ellipsoidal saccular structure with openings, are made of polyvinyl alcohol films with the thickness of 2mm, and can adjust the dissolution time T of the slow release capsules 12 in water according to requirements 1 The method comprises the steps of carrying out a first treatment on the surface of the The two buoyancy capsules 13 are of hollow ellipsoidal saccular structures with openings, are made of 2mm soft plastic, can be filled with air to provide buoyancy for the flexible outer package 11, and ensure that the flexible outer package 11 moves along with underground water flow in the karst pipeline 2 after slurry solidification;
step four: slurry preparation, namely according to the size and the setting time T of the flexible outer package 11 2 Preparing an outer slurry 14 and a sustained-release slurry 15; the outer slurry 14 adopts polyether polyol (Yukol 5613 type) and water, the slow release slurry 15 adopts toluene diisocyanate (KONNATE T-80 type), and after the slow release slurry 15 is released by dissolution of the slow release capsule 12, the polyether polyol in the outer slurry 14 and the slow release slurry 15 toluene diisocyanate are mixed to generate expansion and solidification reaction, so that a high-strength plugging grouting block is formed;
step five: the plugging device is assembled and put in, as shown in figure 3, namely, the plugging device 1 and the haulage rope 5 which are formed by three slow-release capsules 12 filled with slow-release slurry 15, two buoyancy capsules 13 filled with air 16 and a flexible outer package 11 filled with outer slurry 14 are quickly assembled and put in the karst pipeline 2 along the drill hole 3; three slow release capsules 12 filled with slow release slurry 15 are directed to inject predetermined mass W into the three slow release capsules 12, respectively Sustained release Is sealed and is in contact with the slow-release slurry 15; two buoyancy capsules 13 filled with air 16, referred to as a predetermined volume V Air-conditioner Is injected into the buoyancy capsule 13 and sealed; soft filled outer slurry 14The sex outer wrapping 11 refers to uniformly fixing three slow-release capsules 12 filled with slow-release slurry 15 and two buoyancy capsules 13 filled with air 16 in the flexible outer wrapping 11 by using belts, and then injecting a preset mass W into the flexible outer wrapping 11 Outer part Is sealed and is also included in the outer slurry 14; one end of the haulage rope 5 is fixed at the tail end of the plugging device 1, the other end of the haulage rope is fixed outside the drill hole 3, and the length of the haulage rope is 3.0-5.0 m longer than the distance from the drill hole 3 to the karst pipeline 2, and is used for hauling the plugging device 1 to prevent the plugging device from moving along with underground water flow;
step six: the slurry slowly-releasing solidification, as shown in figure 4, means that after the assembled plugging device 1 enters the karst pipeline 2, the plugging device floats in underground water flow under the traction of the traction rope 5, and the slowly-releasing capsule 12 gradually dissolves under the soaking action of water in the external slurry for a dissolving time T 1 After the internal slow release slurry 15 is released, the slow release slurry 15 and the external slurry 14 meet, and then the polyether polyol and the toluene diisocyanate undergo expansion and solidification reaction to form a high-strength grouting block;
step seven: the grouting block is released, as shown in fig. 5, after the high-strength grouting block is solidified, the traction rope 5 is cut off, the grouting block moves along with underground water flow, and the karst pipeline 2 is plugged when the grouting block moves to a place where the karst pipeline 2 is narrower; detecting the water flow in the karst pipeline 2, and repeating the second to seventh steps if the water flow is greater than 1/10 of the original water flow;
step eight: and (3) performing secondary grouting, as shown in fig. 6, after the water flow in the karst pipeline 2 is greater than a preset value, performing secondary grouting along the drill hole 3 to form a secondary grouting reinforcement body 4 until the water flow is completely blocked.
As shown in fig. 2, the plugging device 1 comprises three slow release capsules 12 filled with slow release slurry 15, two buoyancy capsules 13 filled with air 16, a flexible outer envelope 11 filled with outer slurry 14; three slow release capsules 12 filled with slow release slurry 15 and two buoyancy capsules 13 filled with air 16 are fixed in the flexible outer package 11; one end of the traction rope 5 is fixed at the tail end of the flexible outer package 11, and is used for traction of the flexible outer package 11 to prevent the flexible outer package from moving along with underground water flow.
Under the innovative scheme thought, the karst pipeline slow-release blocking method provided by the application has the following working procedures:
firstly, drilling is carried out in a karst area to be grouting, and a drill hole 3 of the karst pipeline 2 detected is reserved for later plugging; then according to the size and depth of the pre-plugging karst pipeline 2, manufacturing an expandable flexible outer package 11 by using a high-elasticity rubber film; three slow release capsules 12 are made of polyvinyl alcohol films, two buoyancy capsules 13 are made of soft plastics and fixed in the flexible outer package 11; according to the size and solidification time T of the flexible outer package 11 2 Preparing an outer slurry 14 and a sustained-release slurry 15; rapidly assembling the plugging device 1 consisting of three slow release capsules 12 filled with slow release slurry 15, two buoyancy capsules 13 filled with air 16 and a flexible outer package 11 filled with outer slurry 14; one end of a haulage rope 5 is fixed at the tail end of the plugging device 1, and the other end is fixed outside the drill hole 3; the plugging device 1 is put into a karst pipeline 2 along a drill hole 3; after the assembled plugging device 1 enters the karst pipeline 2, the plugging device floats in underground water flow under the traction of the traction rope 5, and the slow-release capsule 12 is gradually dissolved under the soaking effect of water in external slurry for a dissolving time T 1 After the internal slow release slurry 15 is released, the polyether polyol in the external slurry 14 and the slow release slurry 15 toluene diisocyanate are mixed to generate expansion and solidification reaction, and the solidification time T 2 Forming a high-strength grouting block after reaching; the traction rope 5 is cut off after the high-strength grouting block is solidified, the grouting block moves along with underground water flow, and the karst pipeline 2 is plugged when the grouting block moves to a place where the karst pipeline 2 is narrower; and detecting the water flow in the karst pipeline 2, if the water flow is greater than 1/10 of the raw water flow, repeating the operation, and if the water flow is less than or equal to 1/10 of the raw water flow, performing secondary grouting along the drill hole 3 to form a secondary grouting reinforcement body 4 until the water flow is completely blocked.
Compared with the prior art, the technical scheme provided by the application has the following beneficial effects by way of example and not limitation: the application relates to the technical field of exploration and engineering, and can rapidly and effectively block high-flow-rate and large-flow underground water in a karst pipeline 2, so as to reduce the harm of water burst to rock-soil body excavation, ore body exploitation and the like.
The above description is only illustrative of the preferred embodiments of the application and is not intended to limit the scope of the application in any way. Any alterations or modifications of the application, which are obvious to those skilled in the art based on the teachings disclosed above, are intended to be equally effective embodiments, and are intended to be within the scope of the appended claims.
Claims (9)
1. A karst pipeline slow release blocking method is characterized in that: the method mainly comprises the following eight steps: drilling and a second step: and (3) flexible outer wrapping manufacturing and step three: and (3) capsule preparation, namely: preparing slurry and step five: assembling and putting the plugging device, and step six: slowly releasing and solidifying the slurry, and step seven: releasing grouting blocks, and carrying out step eight: and (5) secondary grouting.
2. The method according to claim 1, characterized in that: the first step is as follows: drilling is performed in a karst area to be grouting, and a drill hole (3) of the karst pipeline (2) detected is reserved for later plugging.
3. The method according to claim 1, characterized in that: step two: in the manufacture of the flexible outer package, a special member flexible outer package (11) is designed for completing the step, and the member is of a columnar hollow flexible structure and can be expanded and deformed, and the diameter D before expansion 1 Is smaller than the diameter of the drill hole (3), and the diameter D after expansion 2 Is larger than the local minimum diameter of the karst pipeline (2).
4. The method according to claim 1, characterized in that: step three: in the capsule manufacturing process, a special component slow-release capsule (12) and a buoyancy capsule (13) are designed for completing the steps; the slow-release capsule (12) is of a hollow ellipsoidal capsule structure with a mouth and is made of a polyvinyl alcohol film, and the dissolution time T of the slow-release capsule (12) in water can be adjusted according to preset requirements 1 The method comprises the steps of carrying out a first treatment on the surface of the The buoyancy capsule (13) is of a hollow ellipsoidal capsule structure with a mouth, and the inside of the buoyancy capsule can be filled with air to provide buoyancy for the flexible outer package (11), so that the flexible outer package (11) moves along with underground water flow in the karst pipeline (2) after slurry is solidified.
5. The method according to claim 1, characterized in that: step four: slurry preparation means according to the size and setting time T of the flexible outer envelope (11) 2 Preparing an outer slurry (14) and a sustained-release slurry (15); the outer slurry (14) adopts polyether polyol and water; the slow-release slurry (15) adopts toluene diisocyanate, the mass ratio of polyether polyol to toluene diisocyanate is 1:1.05, and after the slow-release slurry (15) is released by dissolution of the slow-release capsule (12), the polyether polyol in the outer slurry (14) and the slow-release slurry (15) toluene diisocyanate are mixed to generate expansion and solidification reaction, and the solidification time T 2 And forming a high-strength plugging grouting block after reaching.
6. The method according to claim 1, characterized in that: step five: in the assembly and the throwing of the plugging device, a special member plugging device (1) is designed for completing the step, and the plugging device comprises a plurality of slow-release capsules (12) filled with slow-release slurry (15), a plurality of buoyancy capsules (13) filled with air (16) and a flexible outer package (11) filled with outer slurry (14), wherein the slow-release capsules (12) and the buoyancy capsules (13) are uniformly fixed in the flexible outer package (11) by utilizing belts;
a traction rope (5) is also designed, one end of the traction rope is fixed at the tail end of the plugging device (1), and the other end of the traction rope is fixed outside the drill hole (3) and is used for traction of the plugging device (1) to prevent the plugging device from moving along with underground water flow.
7. The method according to claim 1, characterized in that: step six, the step is as follows: the slurry slowly-releasing solidification means that after the assembled plugging device (1) enters the karst pipeline (2), the plugging device floats in underground water flow under the traction of the traction rope (5), the slowly-releasing capsule (12) is gradually dissolved under the soaking action of water in the external slurry (14), and the dissolving time T is prolonged 1 After reaching the aim, the internal slow-release slurry (15) is released, and after the slow-release slurry (15) meets the external slurry (14), the swelling and solidification reaction and the solidification time T are carried out 2 And forming the high-strength grouting block after reaching.
8. The method according to claim 1, characterized in that: step seven, the method comprises the following steps: the grouting block is released, namely the traction rope (5) is cut off after the high-strength grouting block is solidified, the grouting block moves along with underground water flow, and the karst pipeline (2) is plugged when the grouting block moves to a place where the karst pipeline (2) is narrower; and detecting the water flow in the karst pipeline (2), and repeating the second to seventh steps if the water flow is larger than a preset value.
9. The method according to claim 1, characterized in that: step eight, the following steps: and (3) performing secondary grouting, namely performing secondary grouting along the drill hole (3) after the water flow in the karst pipeline (2) is smaller than a preset value to form a secondary grouting reinforcing body (4) until the water flow is completely blocked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310485637.3A CN116623643A (en) | 2023-04-30 | 2023-04-30 | Karst pipeline slow-release blocking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310485637.3A CN116623643A (en) | 2023-04-30 | 2023-04-30 | Karst pipeline slow-release blocking method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116623643A true CN116623643A (en) | 2023-08-22 |
Family
ID=87635628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310485637.3A Pending CN116623643A (en) | 2023-04-30 | 2023-04-30 | Karst pipeline slow-release blocking method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116623643A (en) |
-
2023
- 2023-04-30 CN CN202310485637.3A patent/CN116623643A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110130936B (en) | Construction method for sudden encountering untreated karst cave or crack in shield tunneling process | |
| CN110700842A (en) | Advanced grouting reinforcement method suitable for water-rich sand layer section of shield end | |
| CN202644538U (en) | A grouting device used for a water-rich quicksand stratum | |
| CA1310180C (en) | Grout material and grouting method using same | |
| CN113585181B (en) | Dam upstream hydraulic self-seeking through type piping plugging device, system and method | |
| CN112943266B (en) | High-pressure rotary spraying grouting reinforcement method for high-flow-rate underground water-rich sand layer | |
| CN103572764A (en) | Watertight structure for retaining wall of ultra-deep manually excavated pile and construction method thereof | |
| CN109763845B (en) | Construction method for preventing and controlling water by constructing L-shaped grouting closure curtain | |
| CN116623643A (en) | Karst pipeline slow-release blocking method | |
| CN110821498B (en) | Safe and rapid water plugging and reinforcing method in strong water-rich soft surrounding rock of operation tunnel | |
| CN113149548A (en) | Water-rich silty-fine sand layer super-large-diameter dense pile group empty pile backfill material and method | |
| CN106013177B (en) | A kind of pile foundation meets the processing method and plugging structure of karst into hole drill | |
| CN110804917A (en) | Construction method of pressure grouting boundary curtain | |
| CN107013231B (en) | Construction method for controlling grouting reinforcement range in large-porosity giant rock pile loose body | |
| CN104631478A (en) | Method and device for quick blockage of piping in deep foundation pit | |
| CN108867279B (en) | Soft soil roadbed municipal road construction method | |
| CN109610480B (en) | Wall protection device for cast-in-place pile | |
| CN109083165B (en) | Use method of foaming self-breaking cement mortar in anchoring section of anchor rod or anchor cable | |
| CN113062744A (en) | Water-rich sandy gravel stratum shield construction muck improvement method and shield construction method | |
| CN220868198U (en) | Underwater anchor cable construction device | |
| CN111763063A (en) | Strong-permeability stratum grouting material in dynamic water environment and preparation method thereof | |
| CN105568961B (en) | A kind of forming hole method suitable for soft modeling shape red clay stratum pile foundation | |
| CN112963158B (en) | Double-liquid grouting method and slurry for pore stratum | |
| CN217053429U (en) | Device for rapidly and effectively blocking sudden water burst of underground engineering | |
| CN108715526B (en) | Controllable grouting liquid for coal mining and tunnel engineering and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |