CN106630866A - Hole sealing agent for coal mines - Google Patents
Hole sealing agent for coal mines Download PDFInfo
- Publication number
- CN106630866A CN106630866A CN201610907281.8A CN201610907281A CN106630866A CN 106630866 A CN106630866 A CN 106630866A CN 201610907281 A CN201610907281 A CN 201610907281A CN 106630866 A CN106630866 A CN 106630866A
- Authority
- CN
- China
- Prior art keywords
- hole
- hole sealing
- sealing agent
- agent
- powdery
- 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
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 84
- 238000007789 sealing Methods 0.000 title claims abstract description 74
- 239000003245 coal Substances 0.000 title claims abstract description 20
- 239000004568 cement Substances 0.000 claims abstract description 17
- 239000000126 substance Substances 0.000 claims abstract description 14
- 150000004645 aluminates Chemical class 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims abstract description 10
- 239000000853 adhesive Substances 0.000 claims abstract description 6
- 230000001070 adhesive effect Effects 0.000 claims abstract description 6
- 230000008961 swelling Effects 0.000 claims description 23
- 238000005553 drilling Methods 0.000 claims description 20
- 238000004880 explosion Methods 0.000 claims description 9
- 239000000292 calcium oxide Substances 0.000 claims description 8
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 229920006332 epoxy adhesive Polymers 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 229920003180 amino resin Polymers 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- UFLSLGGVXPPUDQ-UHFFFAOYSA-N dicalcium oxygen(2-) Chemical compound [O--].[O--].[Ca++].[Ca++] UFLSLGGVXPPUDQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 238000005496 tempering Methods 0.000 claims description 3
- 229910001586 aluminite Inorganic materials 0.000 claims 1
- 239000002689 soil Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 2
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 1
- 239000001569 carbon dioxide Substances 0.000 abstract 1
- 238000005336 cracking Methods 0.000 abstract 1
- 239000003566 sealing material Substances 0.000 abstract 1
- 239000011799 hole material Substances 0.000 description 58
- 239000000440 bentonite Substances 0.000 description 7
- 229910000278 bentonite Inorganic materials 0.000 description 7
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 7
- 238000000605 extraction Methods 0.000 description 5
- 238000005457 optimization Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Ceramic Engineering (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention belongs to the field of technologies for sealing drilled holes in coal seams, and particularly relates to a hole sealing agent for carbon dioxide fracturing technologies for coal mines. The hole sealing agent mainly comprises aluminate cement and powdery expansive agents. A weight ratio of the aluminate cement to the powdery expansive agents is 9:1. The hole sealing agent only needs to be uniformly mixed with water to obtain mixtures when used, property change reaction is carried out on raw materials after the mixtures are injected into a drilled hole, the expansive agents are expanded when in contact with the water, the hole sealing agent is gradually thickened, the volume of the hole sealing agent is continuously expanded, the strength of the hole sealing agent is improved, accordingly, the aluminum hole sealing agent can be tightly combined with the drilled hole in a coal mine under the effect of chemical adhesive and is deeply fed into gaps in the edges of the drilled hole, and the gaps can be adhered and sealed and can be prevented from being further spread. Compared with existing materials, the hole sealing agent has the advantages that the hole sealing agent is a safe and effective novel hole sealing material; the tiny gaps can be effectively sealed and can be stopped from being spread, cracking or gas leaking can be prevented after the gaps are sealed, the hole sealing agent is stable in sealing structure and long in duration, the hole sealing expenditure can be saved, and hole sealing effects are high in quality.
Description
Technical field
The invention belongs to coal bed drilling blocking technology field, and in particular to a kind of hole sealing agent for colliery.
Background technology
In the last few years, with the increasingly complexity of China's coal-mine mining environment, each colliery also increasingly weighs to gas preventing and control
Depending on, wherein, it is an important means for preventing gas to the in advance extraction of coal-bed gas, the effect of pre- extraction is better, extraction
Than higher, the environment in exploitation is better, and the possibility that accident occurs is also lower.It is right in the links of gas drainage under suction
The closure drilled in extraction is again one of key point link.Therefore, new colliery skill of the country in the regulation of in August, 2009
In art safety standard, the closure that extraction drills mandatory provision, at least up to 8 meters of closure distance are carried out.
Drill in prior art after cutting, carry out next step operation after needing to be closed again.For example, coal seam is being surveyed
After spy, need to be blocked, be easy to later exploitation.
Traditional method for sealing is to inject yellow mud toward drilling, due to the restriction of yellow mud itself, effectively will can not be bored
Hole closure is closely knit, and in addition yellow mud is difficult to use mechanized operation, needs to put into substantial amounts of manpower and materials, and engineering progress is slow, gesture
Project progress must be affected.For this purpose, both at home and abroad many scholars have made intensive studies to this problem, major progress is achieved.
A Wang Yu outstanding persons of CN 101318802 et al. are in patent《Hole sealing agent for seismic exploration and preparation method thereof》In propose with inorganic material
Material carries out sealing of hole, wherein be distinctly claimed burning CaO content for 40%-97%, because burning CaO is bulking substances, and content mistake
The materials such as rock, coal may more crushed, the purpose of expected sealing of hole is not reached.The A Yang Sheng of CN 102733844 it is strong et al.
Patent《A kind of hole sealing structure and method for sealing and sealing of hole expanding cement》In efficiently solve sealing of hole imprecision, gas leakage etc. and ask
Topic, but wherein require to twine flexible fabric outward respectively at gas pumping pipe both ends, then expanding cement is coated on flexible fabric, it is quiet
10-15min is treated, Grouting Pipe is inserted on front plug after its solidification.In the case where drilling hole amount is less, the method has can
Row.If drilling hole amount is more, reduced using the efficiency of construction of the method, this will certainly extend the engineering time, affect engineering
Progress.
The content of the invention
In order to solve the above problems, the present invention is studied the composition and proportioning of hole sealing agent, has made a kind of use
In the hole sealing agent in colliery.
The technical solution used in the present invention is：A kind of hole sealing agent for colliery, it is characterised in that：The hole sealing agent is mainly wrapped
Include aluminate cement, powdery swelling agent, Chemical Felter.
The aluminate cement, the weight proportion of powdery swelling agent are：9: 1, the aluminate cement, powdery swelling agent,
The weight error of Chemical Felter is within ± 4%.
The optimization of the present invention, according to a kind of hole sealing agent for colliery described above, it is characterised in that：The powdery is swollen
Swollen dose is included in alumite plumping agent, sulphoaluminate expander, calcium oxide swelling agent, calcium oxide-calcium sulphoaluminate composite expanding agent
One or more.
The optimization of the present invention, according to a kind of hole sealing agent for colliery described topmost, it is characterised in that：It is described
Chemical Felter include bentonite and epoxy adhesive, polyurethane adhesive, amino resins binding agent in one kind or
It is various.
The optimization of the present invention, a kind of hole sealing agent for colliery according to the top, it is characterised in that：The sealing of hole
The using method of agent is to complete according to the following steps：
(4) coal mine drilling or blast hole periphery water-wet；
(5) hole sealing agent adds water and stirs, and the weight proportion of the hole sealing agent and water is 1: (1.5～3)；
(6) hole sealing agent for tempering is rapidly injected to coal mine drilling or blast hole, sealing filling is closely knit, air tight,
Up to sealing of hole effect after 10～15min.
The further optimization of the present invention, according to a kind of hole sealing agent for colliery described above, it is characterised in that：It is described
Coal mine drilling or explosion bore dia >=50mm, hole sealed borehole length >=300mm；Drilling or explosion bore dia≤10mm, hole envelope
Hole length is >=450mm；The coal mine drilling or explosion 10～50mm of bore dia, hole 300～450mm of sealed borehole length.
Compared with prior art, its effect is the present invention：The present invention adopts such scheme, when using, as long as by hole sealing agent
Mix well with water, after injection hole, generation property becomes and reacts between raw material, swelling agent water-swellable, hole sealing agent gradually retrogradation, and volume is not
Disconnected expansion, intensity enhancing, under Chemical Felter effect so that aluminate cement is tightly combined with coal mine drilling, and deeply bores
In bore edges gap, gap bonding is blocked, prevent gap from further expanding and prolong.The present invention is a kind of safely and effectively new sealing of hole
Material, compared with conventional material, can effectively block micro gap, and prevent gap expansion and prolong, gas leakage of not ftractureing after closure, closure
Stability Analysis of Structures, duration length saves sealing of hole funds, and sealing of hole effect quality is high.
Specific embodiment
In order that the technological means of the present invention, creation characteristic, reached purpose and effect are easy to understand, in conjunction with concrete
Embodiment, is further elaborated to the present invention.
Embodiment one：A kind of hole sealing agent for colliery, the hole sealing agent is made up of following components proportioning by weight：Aluminium
9 parts of acid salt cement, 1 part of powdery swelling agent, the aluminate cement, powdery swelling agent, Chemical Felter weight error ±
Within 4%.
The powdery swelling agent be alumite plumping agent, calcium oxide swelling agent, its alumite plumping agent, calcium oxide swelling agent
Parts by weight proportioning is 1: 1.
The Chemical Felter includes bentonite and epoxy adhesive, its bentonite and epoxy adhesive weight
Number proportioning is 0.8: 1.
Embodiment two：A kind of hole sealing agent for colliery, the hole sealing agent is made up of following components proportioning by weight：Aluminium
9 parts of acid salt cement, 1 part of powdery swelling agent, 1 part of Chemical Felter, the aluminate cement, powdery swelling agent, Chemical Felter
Weight error within ± 4%.
The powdery swelling agent is calcium oxide-calcium sulphoaluminate composite expanding agent.
The Chemical Felter includes bentonite and polyurethane adhesive, its bentonite and polyurethane adhesive parts by weight
Proportioning is 1: 1.
Embodiment three：A kind of hole sealing agent for colliery, the hole sealing agent is made up of following components proportioning by weight：Aluminium
10 parts of acid salt cement, 1 part of powdery swelling agent, the aluminate cement, powdery swelling agent, Chemical Felter weight error ±
Within 4%.
The powdery swelling agent is sulphoaluminate expander, calcium oxide swelling agent, and its sulphoaluminate expander, calcium oxide are swollen
Swollen dose of parts by weight proportioning is 1: 1.
The Chemical Felter includes bentonite and polyurethane adhesive, its bentonite and amino resins weight of binder part
Number proportioning is 0.5: 1.
The technical indicator of a kind of hole sealing agent for colliery that the present invention is prepared is：
Outward appearance：Gray powder；
Water content：Less than 2%；Fineness：
120 eye mesh screen parts by weight are not through less than 10%, through 100 eye mesh screen parts by weight more than 80%；
Compression strength after sealing of hole is：5～10MPa；
Presetting period：Less than 10 minutes.
The using method of the hole sealing agent that above-described embodiment one, two, three is prepared is,
Complete according to the following steps：
(1) coal mine drilling or blast hole periphery water-wet；
(2) hole sealing agent adds water and stirs, and the weight proportion of the hole sealing agent and water is 1: (1.5～3)；
(3) hole sealing agent for tempering is rapidly injected to coal mine drilling or blast hole, sealing filling is closely knit, air tight,
Up to sealing of hole effect after 15～60min.
The coal mine drilling or explosion bore dia >=50mm, hole sealed borehole length >=300mm；Drilling or explosion bore dia
≤ 10mm, hole sealed borehole length is >=450mm；The coal mine drilling or explosion 10～50mm of bore dia, hole sealed borehole length 300～
450mm。
Hole sealing agent and water are mixed by 5: 1 after stirring evenly, in rapid injection hole, the initial set in 5 minutes, in 10～15 minutes
Gain in strength is most fast.At 3～5 times, the expansion multiple is volume after expansion and hole sealing agent volume ratio for expansion multiple control, plus
The fewer curing rate of the water yield is faster, and expansion multiple is reduced, and intensity is big.Intensity when volume increases to 3 times when 30 minutes can reach
More than 3MPa.And the micro gap formed in boring procedure is blocked, material entirety densification has reached good sealing effectiveness,
This hole sealing agent is nontoxic, harmless, low cost, and environment is not interfered with after use.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
It should be appreciated that the present invention is not restricted to the described embodiments, the description in above-described embodiment and specification is only the present invention to personnel
Preference, the present invention is not limited by above-mentioned preference, without departing from the spirit and scope of the present invention, of the invention
Can also there are various changes and modifications, these changes and improvements are both fallen within the scope of protection of present invention.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding can carry out various changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention
And modification, the scope of the present invention be defined by the appended.
Claims (5)
1. a kind of hole sealing agent for colliery, it is characterised in that：The hole sealing agent mainly includes aluminate cement, powdery swelling agent.
The aluminate cement, powdery swelling agent：9: 1, the aluminate cement, the weight error of powdery swelling agent are ± 4%
Within.
2. a kind of hole sealing agent for colliery according to claim 1, it is characterised in that：The powdery swelling agent includes bright
One kind in aluminite swelling agent, sulphoaluminate expander, calcium oxide swelling agent, calcium oxide-calcium sulphoaluminate composite expanding agent or
It is various.
3. a kind of hole sealing agent for colliery according to claim 1, it is characterised in that：The Chemical Felter includes swollen
Profit soil and epoxy adhesive, polyurethane adhesive, amino resins binding agent in one or more.
4. a kind of hole sealing agent for colliery according to claim 1, it is characterised in that：The using method of the hole sealing agent
To complete according to the following steps：
(1) coal mine drilling or blast hole periphery water-wet；
(2) hole sealing agent adds water and stirs, and the weight proportion of the hole sealing agent and water is 5: 1；
(3) hole sealing agent for tempering is rapidly injected to coal mine drilling or blast hole, sealing filling is closely knit, air tight, 10～
Up to sealing of hole effect after 15min.
5. a kind of hole sealing agent for colliery according to claim 4, it is characterised in that：The coal mine drilling or explosion
Bore dia >=50mm, hole sealed borehole length >=300mm；Drilling or explosion bore dia≤10mm, hole sealed borehole length is >=450mm；
The coal mine drilling or explosion 10～50mm of bore dia, hole 300～450mm of sealed borehole length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610907281.8A CN106630866A (en) | 2016-10-18 | 2016-10-18 | Hole sealing agent for coal mines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610907281.8A CN106630866A (en) | 2016-10-18 | 2016-10-18 | Hole sealing agent for coal mines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106630866A true CN106630866A (en) | 2017-05-10 |
Family
ID=58856900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610907281.8A Pending CN106630866A (en) | 2016-10-18 | 2016-10-18 | Hole sealing agent for coal mines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106630866A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108863244A (en) * | 2018-08-14 | 2018-11-23 | 山西潞安晋安矿业工程有限责任公司 | A kind of coal mine hole sealing agent and preparation method thereof, application method |
| CN110926292A (en) * | 2019-12-16 | 2020-03-27 | 安徽理工大学 | Water-leakage-proof sand hole sealing bag for coal mine blasting and using method thereof |
| CN112250384A (en) * | 2020-10-20 | 2021-01-22 | 陕西煤业化工技术研究院有限责任公司 | High-expansion quick-setting inorganic mining hole sealing material and preparation method thereof |
| CN113248197A (en) * | 2021-05-07 | 2021-08-13 | 河南工程学院 | Waste incineration fly ash based flexible gas hole sealing material and preparation method thereof |
| CN113670491A (en) * | 2021-08-17 | 2021-11-19 | 中国矿业大学 | Chemical expansion rubber-pushing type hollow capsule geostress meter and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844902A (en) * | 2010-05-14 | 2010-09-29 | 河南工程学院 | High-strength expandable mine sealing material capable of being solidified quickly |
| CN103849362A (en) * | 2014-02-18 | 2014-06-11 | 六盘水师范学院 | Formula of coal-bed gas extraction drilling-sealing material and preparation method thereof |
-
2016
- 2016-10-18 CN CN201610907281.8A patent/CN106630866A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844902A (en) * | 2010-05-14 | 2010-09-29 | 河南工程学院 | High-strength expandable mine sealing material capable of being solidified quickly |
| CN103849362A (en) * | 2014-02-18 | 2014-06-11 | 六盘水师范学院 | Formula of coal-bed gas extraction drilling-sealing material and preparation method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108863244A (en) * | 2018-08-14 | 2018-11-23 | 山西潞安晋安矿业工程有限责任公司 | A kind of coal mine hole sealing agent and preparation method thereof, application method |
| CN108863244B (en) * | 2018-08-14 | 2021-06-11 | 山西潞安晋安矿业工程有限责任公司 | Coal mine hole sealing agent and preparation method and use method thereof |
| CN110926292A (en) * | 2019-12-16 | 2020-03-27 | 安徽理工大学 | Water-leakage-proof sand hole sealing bag for coal mine blasting and using method thereof |
| CN110926292B (en) * | 2019-12-16 | 2021-09-10 | 淮南矿业(集团)有限责任公司 | Water-leakage-proof sand hole sealing bag for coal mine blasting and using method thereof |
| CN112250384A (en) * | 2020-10-20 | 2021-01-22 | 陕西煤业化工技术研究院有限责任公司 | High-expansion quick-setting inorganic mining hole sealing material and preparation method thereof |
| CN112250384B (en) * | 2020-10-20 | 2022-04-26 | 陕西煤业化工技术研究院有限责任公司 | High-expansion quick-setting inorganic mining hole sealing material and preparation method thereof |
| CN113248197A (en) * | 2021-05-07 | 2021-08-13 | 河南工程学院 | Waste incineration fly ash based flexible gas hole sealing material and preparation method thereof |
| CN113670491A (en) * | 2021-08-17 | 2021-11-19 | 中国矿业大学 | Chemical expansion rubber-pushing type hollow capsule geostress meter and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106630866A (en) | Hole sealing agent for coal mines | |
| CN108894727A (en) | The water-retaining method of ground level directional drilling slip casting closure overlying strata water producing fractures main channel | |
| EP2876119A1 (en) | Gel, leaking stoppage method using the same, and well kill leaking stoppage method using the same | |
| CN112593853B (en) | Construction method for coal mine waste filling and water-reducing mining | |
| CN108643877A (en) | Coal mine underground coal seam long drilling staged fracturing permeability-increasing and gas extraction method | |
| CN106050185B (en) | A kind of coal mining bottom plate meets the control method that tomography produces water inrush channel | |
| CN104726078B (en) | A kind of GEL USED FOR PLUGGING WELL LOST CIRCULATION and preparation method thereof | |
| CN102587859A (en) | Technology for blocking mine water bursting through backflow grouting | |
| CN105484269B (en) | Foundation pit enclosure structure seepage prevention and treatment construction method under blasting condition | |
| CN109681244B (en) | Grouting method for micro-fractured rock mass | |
| CN102977868B (en) | Hole sealing material for gas and blast drilling underground coal mine | |
| CN103849362B (en) | The formula of a kind of coal bed gas extraction discharge drilling sealing material and preparation method | |
| CN105804786B (en) | A kind of weak seam bottom plate layer-through drilling pressure rushes anti-reflection method | |
| CN109322699A (en) | Pollution isolation blocking technology under a kind of mine | |
| CN114472462B (en) | Underground-aboveground linkage coal gangue disposal system and disposal method | |
| CN109779670A (en) | A kind of closed composite construction of the quick fire-and explosion-proof pressure-bearing in underground and implementation method | |
| CN103224377A (en) | Coal mine hole sealing agent and preparation and use method thereof | |
| CN105174886A (en) | Limestone water-containing layer grouting reconstruction material suitable for superlong-distance pumping | |
| CN111620657A (en) | Mine working face bottom suction roadway soft rock crushing roof grouting material and construction process thereof | |
| CN109898992A (en) | It is a kind of that disaster-ridden source ore bed safe working method is administered using surface orientation drilling in advance | |
| CN106677756B (en) | A kind of coal petrography softening active fracturing device and coal petrography pressing crack construction technique | |
| Shilova et al. | Protection of operating degassing holes from air inflow from underground excavations | |
| Yu et al. | Development of modified grouting material and its application in roadway repair engineering | |
| CN108756883A (en) | A kind of coal mine tight roof slip casting fracturing process and system | |
| CN104045271A (en) | Plugging agent for oil field or natural gas extraction 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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |