CN106498965A - A kind of karst area water sealing consolidation construction method - Google Patents
A kind of karst area water sealing consolidation construction method Download PDFInfo
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- CN106498965A CN106498965A CN201611100868.4A CN201611100868A CN106498965A CN 106498965 A CN106498965 A CN 106498965A CN 201611100868 A CN201611100868 A CN 201611100868A CN 106498965 A CN106498965 A CN 106498965A
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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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/08—Polyurethanes from polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2101/00—Manufacture of cellular products
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Paleontology (AREA)
- Mining & Mineral Resources (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Lining And Supports For Tunnels (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a kind of karst area water sealing consolidation construction method, comprises the following steps：S1. according to the size of solution cavity, the method for determining filling polyurethane expanded material：S1 1 high to hole less than 1m without filling solution cavity, or high less than 1.5m and on an empty stomach solution cavity of the height less than 0.8m in hole, on-spot injection polyurethane foam material A；S1 2 is for hole height more than or equal to 1m without filling solution cavity, or the high solution cavity for being more than or equal to 1.5m and being highly more than or equal to 0.8m on an empty stomach in hole, spray furnace in elastica bag, mortar is filled to the partial volume of film bag, elastica bag is put into from solution cavity entrance, from the bag mouth injection polyurethane foam material B of elastica bag；S2. polyurethane surface after expansion molding and the periphery rock surface laying at least concrete of 0.5m.Constructed by the method for the present invention, speed of application is fast, and construction cost is low, and sealing and water shutoff performance are good, and effective twelve Earthly Branches support can be formed to the rock of periphery.
Description
Technical field
The present invention relates to Construction Technology field, particularly a kind of karst area water sealing consolidation construction method.
Background technology
The transformation based on corrosion that karst, i.e. water are carried out to solublerock and the effect of destruction address and thus
The landforms of generation and the general name of hydrogeological phenomenon.The hydrogeologic condition of karst strata is complex, its water penetration, fluidised form and
Inhomogeneities all increase, and phenomenon, the geology that current China is caused by karst ground subsidence such as are susceptible to seepage, retention of excessive fluid, subside
Oneself is quite serious for disaster problem.National annual thousands of of karst ground subsidence geological disaster of generation, wherein affect serious area
It is mainly distributed on the ground such as Guangxi, Yunnan, Guizhou.Tunnel, road, building are not only given in the generation of karst ground subsidence geological disaster
Construction brings great adverse effect, but also can threaten human life, brings great economic loss.
Traditional karst ground subsidence geological hazard control method generally using change fill out, be in the milk, concussion burst, leap etc.,
Its principle is mainly by the distributive law of minimizing solution cavity, or the stability of enhancing solution cavity effectively improves its bearing capacity, so as to subtract
Light its endangers.When applying Synthetical control system to administer karst ground subsidence geological disaster, the size of solution cavity scale is to administer skill
The key that art is chosen, the thickness size of clay distribution are very high for the requirement of control measures, and the diameter of such as solution cavity is less than
When 5m, the depth away from soil layer are less than 3m, in the presence of soil arching effect, stress can meet the soil body from steady requirement.Processing method
Slip casting method is typically adopted, i.e., is filled using cement mortar mixture, support upper soil horizon weight, which is prevented in subsoil water
Continue slump under corrosion, expand the scope of solution cavity, but as spring phenomenon can occur under solution cavity, cement mortar mixture is often
Also have little time solidification to be flushed away.And work as solution cavity with diameter greater than 5m, depth away from soil layer more than 3m, the active force of soil arching effect
Can not meet the soil body from steady requirement when, typically using the improvement of the method such as concussion burst, pile foundation, leap.This method is applied
The work cycle is long, high cost.Therefore, it is problem demanding prompt solution to study a kind of quick, inexpensive water sealing consolidation construction method.
Content of the invention
The invention provides a kind of karst area water sealing consolidation construction method, by polyurethane foam material rapidly solidified into
Type, the time is short, speed is fast, and water proof and support effect are good.
For achieving the above object, the technical scheme is that：
A kind of karst area water sealing consolidation construction method, comprises the following steps：
S1. according to the size of solution cavity, the method for determining filling polyurethane expanded material：
S1-1 high to hole less than 1m without filling solution cavity, or high less than 1.5m and on an empty stomach solution cavity of the height less than 0.8m in hole is existing
Field injection polyurethane foam material A, polyurethane foam material A is rapid, and foaming and intumescing blocks solution cavity；
S1-2 for hole high more than or equal to 1m without filling solution cavity, or hole is high to be more than or equal to more than or equal to 1.5m and highly on an empty stomach
The solution cavity of 0.8m, first determines the size of elastica bag, then spray furnace in elastica bag according to solution cavity size, and mortar is filled
To the partial volume of film bag, elastica bag is put into from solution cavity entrance, elastica bag gos deep into solution cavity bottom with the gravity of mortar, from
The bag mouth injection polyurethane foam material B of elastica bag, the rapid foaming and intumescings of polyurethane foam material B block solution cavity, block
After the completion of seal the bag mouth of elastica bag；
S2. polyurethane surface after expansion molding and the periphery rock surface laying at least concrete of 0.5m.
Further, in step S1-2, elastica bag gos deep into solution cavity bottom, in the bullet for being affixed on solution cavity porch
Property film bag portion separately sets 5 ~ 20 air-vents.
Further, further comprising the steps of before laying concrete：Polyurethane surface and periphery after expansion molding
Rock surface lays one layer of waterproof roll.
Further, the polyurethane foam material A is made up by weight of following base ingredients：Polyether polyol 50 ~
80 parts, 15 ~ 24 parts of isocyanates, 2 ~ 5 parts of foam stabiliser, 5 ~ 20 parts of foaming agent, 1 ~ 2 part of calcium soap, 12 ~ 22 parts of expanded vermiculite,
10 ~ 20 parts of portland cement, 10 ~ 20 parts of geo-polymer dry powder, 5 ~ 12 parts of lignocellulose, 1 ~ 2 part of kieselguhr, catalyst
1.5 ~ 5 parts；Base ingredients are 1 with the mass ratio of water:0.3~0.5.Further, the polyurethane foam material A is by following
Base ingredients are made by weight：60 parts of polyether polyol, 18 parts of isocyanates, foam stabiliser 3,15 parts of foaming agent, calcium soap
1.5 parts, 18 parts of expanded vermiculite, 15 parts of portland cement, 10 parts of lignocellulose, 8 parts of geo-polymer dry powder, kieselguhr 1.5
Part, 3 parts of catalyst.
Further, the polyurethane foam material B is made up by weight of following base ingredients：Polyether polyol 50 ~
80 parts, 15 ~ 24 parts of isocyanates, 2 ~ 3 parts of foam stabiliser, 5 ~ 20 parts of foaming agent, 1 ~ 2 part of calcium soap, 12 ~ 22 parts of expanded vermiculite,
5 ~ 10 parts of portland cement, 5 ~ 12 parts of lignocellulose, 2 ~ 8 parts of geo-polymer dry powder, 1 ~ 2 part of kieselguhr, catalyst 1.5 ~ 5
Part；Base ingredients are 1 with the mass ratio of water:0.6~0.8.Further, the polyurethane foam material B by following base material into
Divide and make by weight：60 parts of polyether polyol, 18 parts of isocyanates, foam stabiliser 2.5,15 parts of foaming agent, expanded vermiculite
18 parts, 8 parts of portland cement, 10 parts of lignocellulose, 6 parts of geo-polymer dry powder, 1.5 parts of kieselguhr, 2 parts of catalyst.
Further, the foam stabiliser be acrylic resin, polyacrylate and polyacrylamide in one kind or
Two kinds.
Further, in step S1-2, elastica bag gos deep into solution cavity bottom, in the bullet for being affixed on solution cavity porch
Property film bag portion point solution cavity porch is pasted on by adhesive.
Further, the elastica bag is the bag-shaped knot of the one end open that is made using natural rubber or polyurethane
Structure.
Above-described karst area water sealing consolidation construction method, with advantages below：
（1）The present invention is made a distinction to the mode for spraying polyurethane foam material according to solution cavity size, and small-scale solution cavity is direct
Injection polyurethane foam material, as polyurethane foam material expansion rate is fast, rate of set fast, can immediately to small-scale molten
Hole is blocked, and large-scale solution cavity cooperation is sprayed by the way of elastica bag, and elastica bag can be with effective protection not
The polyurethane material for foaming completely is washed away by current, and reduces impact of the current to polyurethane material after the completion of foaming, due to
Polyurethane material has the advantages such as the big, good water insulation effect of fast foaming, hardness, can in effectively solving solution cavity current to construction material
Shock problem, and the xoncrete structure on its upper strata can be played a part of Effective Mechanical Properties support and closing current source.
（2）The present invention has carried out different designs according to the situation of solution cavity size to the component of polyurethane foam material, right
In small-scale solution cavity, using the raw material compounding that moisture is less, filling component is more, for large-scale solution cavity, due to adopting
Elastica bag is isolated to current, more using moisture, and the less raw material compounding of filling component, so which is different
Even foaming under environment, and the cost that economizes in raw materials.
（3）The present invention prepares the component of polyurethane foam material to be included：Lignocellulose, portland cement, effectively can carry
The intensity of high polyurethane foam material；Expanded vermiculite, can make polyurethane material rapid expanding, accelerate shaping speed；Calcium soap, diatom
Soil：Accelerate rate of drying, improve shaping speed；Geo-polymer dry powder：Sphericity is big, can improve the mixing velocity of each component,
And its at normal temperatures can curing molding, can also accelerate shaping speed, and there is good supporting role, can be to the rock of periphery
Stone forms effective support；In addition, the acrylic resin adopted in foam stabiliser, can accelerate urethane cures speed, and can have
Effect improves the water resistance of polyurethane.
（4）Constructed by the method for the present invention, working procedure is simple, speed of application is fast, and construction cost is low, sealing and
Water shutoff performance is good, and can form effective twelve Earthly Branches support to the rock of periphery, can Strengthening Tunnel, road, basic unit's knot of architecture construction
Structure, can be widely popularized in karst area technical field of construction.
Specific embodiment
Below with reference to specific embodiment, the invention will be further described, but protection scope of the present invention be not limited to
Lower embodiment：
Embodiment 1
S1. the size of solution cavity, the method for determining filling polyurethane expanded material are measured：When hole height less than 1m without filling solution cavity,
Or the high solution cavity for being less than 1.5m and being highly less than 0.8m on an empty stomach in hole, on-spot injection polyurethane foam material A, polyurethane foam material
Material A is rapid, and foaming and intumescing blocks solution cavity；
S2. polyurethane surface and periphery rock surface after expansion molding lays one layer of waterproof roll, re-lays the coagulation of 1m
Soil.
Wherein, polyurethane foam material A is made up by weight of following base ingredients：60 parts of polyether polyol, Carbimide.
18 parts of ester, 3 parts of acrylic resin, 15 parts of foaming agent, 1.5 parts of calcium soap, 18 parts of expanded vermiculite, 15 parts of portland cement, wooden fibre
10 parts of dimension element, 8 parts of geo-polymer dry powder, 1.5 parts of kieselguhr, 3 parts of catalyst, base ingredients are 1 with the mass ratio of water:0.4.
Before injection polyurethane foam material A, the composition in addition to isocyanates is first mixed to obtain compound A first, will after by compound A with
Isocyanates mixing is put in high-pressure spraying machine, is spurted in solution cavity.
Embodiment 2
S1. the size of solution cavity, the method for determining filling polyurethane expanded material are measured：It is more than or equal to the molten without filling of 1m when hole is high
Hole, or the high solution cavity for being more than or equal to 1.5m and being highly more than or equal to 0.8m on an empty stomach in hole, first determine elastica according to solution cavity size
The size of bag, then spray furnace in elastica bag, mortar are filled to 1/5 volume of film bag, are put into elasticity from solution cavity entrance
Film bag, elastica bag go deep into solution cavity bottom with the gravity of mortar, are being affixed on the elastica bag portion point coating adhesive of solution cavity porch
Glutinous agent is pasted on solution cavity porch, from bag mouth injection the polyurethane foam material B, polyurethane foam material B of elastica bag
Rapid foaming and intumescing blocks solution cavity, seals the bag mouth of elastica bag after the completion of closure；
S2. polyurethane surface and periphery rock surface after expansion molding lays one layer of waterproof roll, re-lays the coagulation of 1m
Soil.
Polyurethane foam material B is made up by weight of following base ingredients：60 parts of polyether polyol, isocyanates 18
Part, 2.5 parts of acrylic resin, 15 parts of foaming agent, 18 parts of expanded vermiculite, 8 parts of portland cement, 10 parts of lignocellulose, geology
6 parts of polymer dry powder, 1.5 parts of kieselguhr, 2 parts of catalyst, base ingredients are 1 with the mass ratio of water:0.7.Injection polyurethane is sent out
Before foam material B, the composition in addition to isocyanates is first mixed to obtain compound B first, compound B is mixed with isocyanates by after
It is put in high-pressure spraying machine, spurts in solution cavity.
Wherein, elastica bag is the bag shaped structure of the one end open that is made using natural rubber.
Embodiment 3
S1. the size of solution cavity, the method for determining filling polyurethane expanded material are measured：It is more than or equal to the molten without filling of 1m when hole is high
Hole, or the high solution cavity for being more than or equal to 1.5m and being highly more than or equal to 0.8m on an empty stomach in hole, first determine elastica according to solution cavity size
The size of bag, then spray furnace in elastica bag, mortar are filled to 1/8 volume of film bag, are put into elasticity from solution cavity entrance
Film bag, elastica bag go deep into solution cavity bottom with the gravity of mortar, separately set 10 in the elastica bag portion for being affixed on solution cavity porch
Individual air-vent, from the bag mouth injection polyurethane foam material B of elastica bag, the rapid foaming and intumescing closure of polyurethane foam material B
Firmly solution cavity, seals the bag mouth of elastica bag after the completion of closure；
S2. polyurethane surface and periphery rock surface after expansion molding lays one layer of waterproof roll, re-lays the coagulation of 1m
Soil.
Polyurethane foam material B is made up by weight of following base ingredients：50 parts of polyether polyol, isocyanates 15
Part, 2 parts of polyacrylamide, 12 parts of foaming agent, 12 parts of expanded vermiculite, 5 parts of portland cement, 5 parts of lignocellulose, geology are polymerized
8 parts of thing dry powder, 1 part of kieselguhr, 1.5 parts of catalyst, base ingredients are 1 with the mass ratio of water:0.8.Injection polyurethane foam material
Before material B, the composition in addition to isocyanates is first mixed to obtain compound B first, compound B is mixed with isocyanates by after and is put into
In high-pressure spraying machine, spurt in solution cavity.
Wherein, elastica bag is the bag shaped structure of the one end open that is made using polyurethane.
Claims (10)
1. a kind of karst area water sealing consolidation construction method, it is characterised in that comprise the following steps：
S1. according to the size of solution cavity, the method for determining filling polyurethane expanded material：
S1-1 high to hole less than 1m without filling solution cavity, or high less than 1.5m and on an empty stomach solution cavity of the height less than 0.8m in hole is existing
Field injection polyurethane foam material A, polyurethane foam material A is rapid, and foaming and intumescing blocks solution cavity；
S1-2 for hole high more than or equal to 1m without filling solution cavity, or hole is high to be more than or equal to more than or equal to 1.5m and highly on an empty stomach
The solution cavity of 0.8m, first determines the size of elastica bag, then spray furnace in elastica bag according to solution cavity size, and mortar is filled
To the partial volume of film bag, elastica bag is put into from solution cavity entrance, elastica bag gos deep into solution cavity bottom with the gravity of mortar, from
The bag mouth injection polyurethane foam material B of elastica bag, the rapid foaming and intumescings of polyurethane foam material B block solution cavity, block
After the completion of seal the bag mouth of elastica bag；
S2. polyurethane surface after expansion molding and the periphery rock surface laying at least concrete of 0.5m.
2. water sealing consolidation construction method in karst area according to claim 1, it is characterised in that：
In step S1-2, elastica bag deeply, to solution cavity bottom, separates in the elastica bag portion for being affixed on solution cavity porch
If 5 ~ 20 air-vents.
3. water sealing consolidation construction method in karst area according to claim 1, it is characterised in that：
Further comprising the steps of before laying concrete：Polyurethane surface after expansion molding and periphery rock surface laying one
Layer waterproof roll.
4. water sealing consolidation construction method in karst area according to claim 1, it is characterised in that：
The polyurethane foam material A is made up by weight of following base ingredients：50 ~ 80 parts of polyether polyol, isocyanates
15 ~ 24 parts, 2 ~ 5 parts of foam stabiliser, 5 ~ 20 parts of foaming agent, 1 ~ 2 part of calcium soap, 12 ~ 22 parts of expanded vermiculite, portland cement 10 ~
20 parts, 10 ~ 20 parts of geo-polymer dry powder, 5 ~ 12 parts of lignocellulose, 1 ~ 2 part of precipitated calcium carbonate kieselguhr, catalyst 1.5 ~ 5
Part；Base ingredients are 1 with the mass ratio of water:0.3~0.5.
5. water sealing consolidation construction method in karst area according to claim 1, it is characterised in that：
The polyurethane foam material B is made up by weight of following base ingredients：50 ~ 80 parts of polyether polyol, isocyanates
15 ~ 24 parts, 2 ~ 3 parts of foam stabiliser, 5 ~ 20 parts of foaming agent, 1 ~ 2 part of calcium soap, 12 ~ 22 parts of expanded vermiculite, portland cement 5 ~ 10
Part, 5 ~ 12 parts of lignocellulose, 2 ~ 8 parts of geo-polymer dry powder, 1 ~ 2 part of kieselguhr, 1.5 ~ 5 parts of catalyst；Base ingredients with
The mass ratio of water is 1:0.6~0.8.
6. water sealing consolidation construction method in karst area according to claim 4, it is characterised in that：
The polyurethane foam material A is made up by weight of following base ingredients：60 parts of polyether polyol, isocyanates 18
Part, 3 parts of foam stabiliser, 15 parts of foaming agent, 1.5 parts of calcium soap, 18 parts of expanded vermiculite, 15 parts of portland cement, lignocellulose
10 parts, 8 parts of geo-polymer dry powder, 1.5 parts of kieselguhr, 3 parts of catalyst.
7. water sealing consolidation construction method in karst area according to claim 5, it is characterised in that：
The polyurethane foam material B is made up by weight of following base ingredients：60 parts of polyether polyol, isocyanates 18
Part, 2.5 parts of foam stabiliser, 15 parts of foaming agent, 18 parts of expanded vermiculite, 8 parts of portland cement, 10 parts of lignocellulose, geology
6 parts of polymer dry powder, 1.5 parts of kieselguhr, 2 parts of catalyst.
8. the karst area water sealing consolidation construction method according to any one of claim 4 ~ 7, it is characterised in that：
The foam stabiliser is one or two in acrylic resin, polyacrylate and polyacrylamide.
9. water sealing consolidation construction method in karst area according to claim 1, it is characterised in that：
In step S1-2, elastica bag deeply, to solution cavity bottom, leads in the elastica bag portion point for being affixed on solution cavity porch
Cross adhesive and be pasted on solution cavity porch.
10. water sealing consolidation construction method in karst area according to claim 1, it is characterised in that：
The elastica bag is the bag shaped structure of the one end open that is made using natural rubber or polyurethane.
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Cited By (7)
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| CN107266646A (en) * | 2017-06-28 | 2017-10-20 | 常州创索新材料科技有限公司 | One kind support modified version polyurethane sealing Porous materials |
| CN107938650A (en) * | 2017-12-22 | 2018-04-20 | 中交第三航务工程局有限公司宁波分公司 | The method for filling and treating of underground karst cavity |
| CN109356171A (en) * | 2018-11-28 | 2019-02-19 | 中国十七冶集团有限公司 | A kind of device and its operating method blocking solution cavity using rubber bag |
| CN109706932A (en) * | 2018-12-03 | 2019-05-03 | 中国电建集团贵阳勘测设计研究院有限公司 | Karst cave plug structure and construction method |
| CN111073267A (en) * | 2019-12-13 | 2020-04-28 | 南通市裕如工程材料有限责任公司 | High-molecular elastic plugging agent |
| CN113217092A (en) * | 2021-05-31 | 2021-08-06 | 山东大学 | Filling method of deformable karst cave |
| CN114427218A (en) * | 2022-02-17 | 2022-05-03 | 河南省地质环境规划设计院有限公司 | Coal mine geological environment treatment method |
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| CN107266646A (en) * | 2017-06-28 | 2017-10-20 | 常州创索新材料科技有限公司 | One kind support modified version polyurethane sealing Porous materials |
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| CN109706932A (en) * | 2018-12-03 | 2019-05-03 | 中国电建集团贵阳勘测设计研究院有限公司 | Karst cave plug structure and construction method |
| CN111073267A (en) * | 2019-12-13 | 2020-04-28 | 南通市裕如工程材料有限责任公司 | High-molecular elastic plugging agent |
| CN113217092A (en) * | 2021-05-31 | 2021-08-06 | 山东大学 | Filling method of deformable karst cave |
| WO2022252252A1 (en) * | 2021-05-31 | 2022-12-08 | 山东大学 | Method for filling deformable solution cave |
| US11933178B2 (en) | 2021-05-31 | 2024-03-19 | Shandong University | Method for filling deformable karst cave |
| CN114427218A (en) * | 2022-02-17 | 2022-05-03 | 河南省地质环境规划设计院有限公司 | Coal mine geological environment treatment method |
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