CN113027467A - Advanced grouting reinforcement treatment method for fully mechanized mining face passing through structural broken zone - Google Patents
Advanced grouting reinforcement treatment method for fully mechanized mining face passing through structural broken zone Download PDFInfo
- Publication number
- CN113027467A CN113027467A CN202110357811.7A CN202110357811A CN113027467A CN 113027467 A CN113027467 A CN 113027467A CN 202110357811 A CN202110357811 A CN 202110357811A CN 113027467 A CN113027467 A CN 113027467A
- Authority
- CN
- China
- Prior art keywords
- grouting
- fully mechanized
- zone
- mechanized mining
- face
- 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 57
- 238000005065 mining Methods 0.000 title claims abstract description 45
- 230000002787 reinforcement Effects 0.000 title claims abstract description 32
- 239000003245 coal Substances 0.000 claims abstract description 47
- 238000010276 construction Methods 0.000 claims abstract description 27
- 239000011435 rock Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 15
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 239000012779 reinforcing material Substances 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 12
- 238000005553 drilling Methods 0.000 claims description 11
- 239000004568 cement Substances 0.000 claims description 4
- 230000035515 penetration Effects 0.000 claims description 2
- 238000005728 strengthening Methods 0.000 claims 3
- 238000000605 extraction Methods 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000011440 grout Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses an advanced grouting reinforcement treatment method for a fully mechanized coal mining face passing through a structural broken zone, which comprises the following steps: determining a construction occurrence state, formulating a construction technical scheme, determining a pre-reinforcement range, selecting a reinforcement material, performing shallow hole grouting reinforcement and deep hole grouting reinforcement outside the influence range of the pre-support pressure, and performing shallow hole grouting reinforcement and deep hole grouting reinforcement within the influence range of the pre-support pressure. According to the invention, the working face is advanced for a certain distance, the upper and lower crossheading or the drill site of the working face are utilized to accurately construct and drill the area to be reinforced, and the inorganic reinforcing filling material is injected through special equipment, so that the structural broken belt coal (rock) body influencing the production of the working face is cured in advance, and the integrity and the bearing strength of the coal (rock) body are improved. The invention solves the problems that the fully mechanized mining face is easy to generate wall caving, roof caving, bottom sinking, frame falling and inclined frame falling during the process of passing the structural crushing zone, reduces high-risk operation, reduces labor intensity of workers, and ensures safe and stable production during the process of passing the structural crushing zone.
Description
Technical Field
The invention relates to the technical field of coal mine production, in particular to a comprehensive mechanized mining face through-structure broken belt advanced grouting reinforcement treatment method.
Background
Coal mining is generally divided into underground coal mines and opencast coal mines. When the coal layer is far away from the ground surface, the coal layer is generally selected to be excavated into an underground roadway to form a mineworker coal mine.
In the coal mining process, a plurality of fully mechanized coal mining working faces need to pass through geological structure broken zones such as faults, folds, collapse columns and the like, if the treatment is not in place, wall caving and roof caving accidents are easy to happen to the working faces during the process of passing through the geological structure broken zones, even work is inclined and inverted, the propelling degree of the working faces is affected if the work is light, the yield is reduced, and gas overrun, goaf ignition and personal casualties are caused if the work is heavy.
The traditional treatment method comprises passive treatment, namely measures of lowering mining height, injecting water into soft coal, paving a net, wiping a top with pressure and moving a frame, additionally arranging a temporary support, advancing a shed manually and the like are adopted during the process that a working face passes through a structural broken zone, but the labor intensity of workers is high, the construction safety risk is high, the safety production is seriously influenced, and the expected effect cannot be achieved. The method also comprises the steps of production and treatment, namely when the working face is close to or exposes a structural broken zone, shallow holes are constructed in the working face towards the coal wall or the top plate, chemical slurry is injected, but the chemical slurry is high in cost and small in diffusion radius, the grouting occupies long production time, and ignition hidden danger is easily generated.
Disclosure of Invention
In order to overcome the defects of poor labor intensity, high safety risk, poor efficiency and poor quality of the traditional treatment method, and the traditional chemical grout injection process has great potential safety hazard and long production time, the invention aims to provide a comprehensive mining working face through-structure broken zone advanced grouting reinforcement treatment method, the invention specifically explains the aspects of determining the occurrence state of the structural breaking zone, making a technical scheme of the structural breaking zone, determining a reinforcing area, selecting a reinforcing material, determining a reinforcing method and the like.
The purpose of the invention can be realized by the following technical scheme:
a comprehensive mechanized mining face through-structure broken zone advanced grouting reinforcement treatment method comprises the following steps:
the method comprises the following steps: analyzing and determining the occurrence state of the structure in the working face, comprehensively analyzing the occurrence state of the structure in the working face by combining geophysical prospecting result data of ground high-density three-dimensional earthquake, fine interpretation, underground pit penetration and channel wave with underground engineering uncovering data, and drawing a grid-type geological profile of the tendency and trend of the fully mechanized mining working face;
step two: making a tectonic technical scheme according to the grid-type geological profile drawn in the step one, the lithology of the coal seam roof, the lithology of the coal seam floor and historical production experience;
step three: on the basis of the over-construction technical scheme, determining the range of a reinforcement plane and a layer according to the construction influence range;
step four: selecting a reinforcing material, wherein the reinforcing material is an inorganic reinforcing and plugging material with superfine property, quick setting property, strong fluidity, high adhesion and high strength;
step five: designing a grouting process, constructing grouting and drilling holes, arranging pipe protecting holes and tightly sealing the holes on the basis of the reinforcing range in the third step and the reinforcing material in the fourth step, determining grouting time, and injecting the reinforcing material in the fourth step in the range of the grouting time.
As a further scheme of the invention: the grid-type geological profile comprises a plurality of parallel working faces and a plurality of vertical working faces, wherein the interval between the parallel working faces is 9-12m, and the interval between the vertical working faces is 25-35 m.
As a further scheme of the invention: the over-construction technical scheme comprises a working face stoping layer position, a top-raising amplitude, a bottom-stopping amplitude and an initial position.
As a further scheme of the invention: the reinforcement range comprises loose coal bodies and loose rock masses which are easy to generate caving, roof caving and bottom caving accidents, and the forming factors of the loose coal bodies and the loose rock masses comprise coal seam occurrence state change, slope-changing mining of a working face support, top supporting coal and lost bottom coal mining.
As a further scheme of the invention: and grouting outside the influence range of the mining supporting pressure of the fully mechanized mining face is adopted at the grouting time, and grouting outside the influence range of the supporting pressure is implemented before mining of the working face or is implemented 200 meters ahead of the working face.
As a further scheme of the invention: and grouting in a stope supporting pressure affected zone of the fully mechanized mining face is adopted at the grouting time, grouting holes in the grouting method are constructed in advance, grouting is carried out when the distance between the grouting holes and the stope working face is 30-50m, and the relative growth of coal-rock body cracks in the reinforced zone is strengthened, so that the grouting property is improved, the grouting diffusion radius is increased, and the grouting amount is increased.
As a further scheme of the invention: the grouting process comprises a shallow hole grouting process and a deep hole grouting process;
the shallow hole grouting process comprises double-row arrangement and three-row arrangement, wherein the depth of holes in the double-row arrangement and the three-row arrangement is 5-8m, the aperture is 38-45mm, the pitch is determined according to the half-diameter of slurry diffusion, a grouting diversion iron pipe is distributed in 4 parts below the whole grouting hole, a special hole packer is adopted for hole sealing, and the grouting pressure is 3-5 MPa;
the distance between a grouting hole and an over-structure broken zone in the deep hole grouting process is 3-5m, the aperture of the grouting hole is any one of 75mm, 94mm and 113mm, the hole opening end of the grouting hole is sealed, the hole sealing depth is 10-20m, the hole opening end adopts bag 'two-plug one-injection' hole sealing with pressure, and the grouting pressure is 10-15 MPa.
As a further scheme of the invention: the reinforcing material is JD-WJF-1 type inorganic reinforcing and plugging material, and the water cement ratio of the reinforcing material is 0.3-0.4: 1.
the invention has the beneficial effects that:
compared with the prior art, the invention discloses a method for analyzing and exploring the structural broken zone of the fully mechanized mining face extraction area and drawing a network geological profile, and the occurrence state of the structural area can be accurately mastered by the method. Meanwhile, a method for formulating a technical scheme of the fully mechanized coal mining face over-structure crushing zone recovery is advanced, so that the fully mechanized coal mining face is ensured to be accurately recovered, especially the range of coal and rock mass to be reinforced can be accurately controlled, and the influence effect and waste caused by blind reinforcement are avoided;
meanwhile, the invention changes the traditional treatment method of the fully mechanized mining face passing structural broken zone, adopts the treatment method of advanced drilling, hole protection, hole sealing and inorganic reinforcing material injection, improves the self strength of the structural broken zone coal rock mass, can ensure the normal propulsion of the fully mechanized mining face during passing the structural broken zone, and avoids rib spalling, roof caving, gas, goaf ignition and personal accidents.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a diagram of the steps of the abatement process of the present invention;
FIG. 2 is a working face geological profile;
FIG. 3 is a cross-sectional view of a working face through a fault;
FIG. 4 is a cross-sectional view of the face through fault dip;
FIG. 5 is a schematic plan view of a floor rock roadway fault detection borehole;
FIG. 6 is a schematic cross-sectional view of a floor rock roadway fault detection borehole;
FIG. 7 is a schematic plan view of a bedding hole being fault probed at a working face;
FIG. 8 is a schematic cross-sectional view of a bedding hole being fault probed at a working face;
fig. 9 is a plan view of a face through-fault deep hole consolidation drilling arrangement.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-9, a method for reinforcing and treating broken zone through structure of fully mechanized coal mining face by advanced grouting comprises the following steps:
the method comprises the following steps: analyzing and determining the occurrence state of the structure in the working face, and drawing a grid-type geological profile of the trend and the trend of the fully mechanized mining working face;
step two: on the basis of a grid-type geological profile, a construction technical scheme is formulated;
step three: on the basis of the over-construction technical scheme, determining a reinforcement range according to a construction influence range;
step four: selecting a reinforcing material;
step five: designing a grouting process, constructing grouting and drilling holes, arranging pipe protecting holes and tightly sealing the holes on the basis of the reinforcing range in the third step and the reinforcing material in the fourth step, determining grouting time, and injecting the reinforcing material in the fourth step in the range of the grouting time.
The invention also includes the following embodiments:
example 1
Determining a structure occurrence state: comprehensively analyzing the occurrence state of the working face structure in the working face by combining geophysical prospecting result data with underground engineering uncovering data, and drawing a grid-type geological profile map of the working face trend and trend to obtain a figure 2-a figure 4;
jointly making a working face over-construction technical scheme according to the construction occurrence state, the lithology of the coal seam roof, the lithology of the coal seam floor, the historical production experience and the like, the mining technology, the ground survey and other departments, and determining the extraction horizon, the top-picking amplitude, the bottom-stopping amplitude and the initial position during the over-construction period;
according to the established over-construction technical scheme, determining a reinforcement range, grouting and reinforcing all loose crushed coal bodies and rock bodies which are easy to generate rib caving, roof caving and bottom caving accidents due to coal seam occurrence state change, slope-changing extraction of a working face support, top supporting coal, bottom losing coal extraction and the like during over-construction, and grouting slurry enters gaps of the coal rock bodies in a filling, permeating and splitting mode to glue the loose crushed coal rock bodies into a whole, so that the physical and mechanical properties of the loose crushed coal rock bodies are improved, and the integral stability and the self-bearing strength of surrounding rocks are improved;
selecting JD-WJF-1 type inorganic reinforcing plugging material with the characteristics of superfine property, quick setting, strong fluidity, high bonding degree and high strength as a reinforcing material;
grouting outside the range of influence of the mining supporting pressure of the fully mechanized mining face is used as a reinforcing opportunity, the grouting is implemented outside the range of 200 meters ahead of the working face, the influence on the production of the working face is small, and the grouting construction time is long;
the grouting process adopts a shallow hole grouting process, grouting drill holes are distributed in upper and lower crossheading grooves of a working surface, the grouting drill holes are arranged in a double-row three-flower mode, the aperture of each grouting drill hole is 42mm, the hole depth is 7m, a roof bolt drilling machine is used for forming the holes, a grouting diversion iron pipe is injected in the lower 4 portions in the whole process, a hole sealing device special for FKSJ-38/6 is used for sealing the holes, a JD-WJF-1 type inorganic reinforcing filling material is used as a grouting material, the water-cement ratio is 0.35:1, a pneumatic grouting pump is used for grouting, and the grouting pressure is 4.3 Mpa.
Example 2
Determining a structure occurrence state: comprehensively analyzing the structural occurrence state of the working face in the working face by combining geophysical prospecting result data with underground engineering uncovering data, drawing a grid-type geological profile map of the working face trend and trend to obtain figures 2-4, carrying out underground exploration, and further finding out the structural occurrence state to obtain figures 5-8;
jointly making a working face over-construction technical scheme according to the construction occurrence state, the lithology of the coal seam roof, the lithology of the coal seam floor, the historical production experience and the like, the mining technology, the ground survey and other departments, and determining the extraction horizon, the top-picking amplitude, the bottom-stopping amplitude and the initial position during the over-construction period;
according to the established over-construction technical scheme, determining a reinforcement range, grouting and reinforcing all loose crushed coal bodies and rock bodies which are easy to generate rib caving, roof caving and bottom caving accidents due to coal seam occurrence state change, slope-changing extraction of a working face support, top supporting coal, bottom losing coal extraction and the like during over-construction, and grouting slurry enters gaps of the coal rock bodies in a filling, permeating and splitting mode to glue the loose crushed coal rock bodies into a whole, so that the physical and mechanical properties of the loose crushed coal rock bodies are improved, and the integral stability and the self-bearing strength of surrounding rocks are improved;
selecting JD-WJF-1 type inorganic reinforcing plugging material with the characteristics of superfine property, quick setting, strong fluidity, high bonding degree and high strength as a reinforcing material;
the method comprises the following steps that (1) grouting of a bearing pressure affected zone is selected as a reinforcement opportunity for the recovery of the fully mechanized mining face, grouting holes are constructed in advance, grouting is conducted 45 meters away from the recovery working face, and coal-rock body cracks of the reinforcement zone relatively develop, so that the grouting property is improved, the grouting diffusion radius is increased, and the grouting amount is increased;
the grouting process adopts a deep hole grouting process, holes are distributed in a drilling field on a working face by using grout holes as shown in figure 9, the row spacing and the depth between the drilled holes are determined according to the reinforcement range and the grout diffusion radius, the final hole position exceeds a structural fracture zone by 4.2m, the diameter of the drilled hole is 94mm, a tunnel hydraulic drilling machine is used for drilling the holes, a PE sieve tube protective hole with the diameter of 32mm is arranged in the whole drilling process, the hole opening end adopts bag type two-plug one-injection under-pressure hole sealing, the hole sealing depth is 14m, the grouting material adopts JD-WJF-1 type inorganic reinforcement filling material, the water cement ratio is 0.38:1, a BYSB80 grouting pump is used for grouting, and the grouting pressure is 13.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (8)
1. The advanced grouting reinforcement treatment method for the fully mechanized mining face passing through the structural broken zone is characterized by comprising the following steps:
the method comprises the following steps: analyzing and determining the occurrence state of the structure in the working face, and drawing a grid-type geological profile of the trend and the trend of the fully mechanized mining working face;
step two: on the basis of a grid-type geological profile, a construction technical scheme is formulated;
step three: on the basis of the over-construction technical scheme, determining a reinforcement range according to a construction influence range;
step four: selecting a reinforcing material;
step five: designing a grouting process, constructing grouting and drilling holes, arranging pipe protecting holes and tightly sealing the holes on the basis of the reinforcing range in the third step and the reinforcing material in the fourth step, determining grouting time, and injecting the reinforcing material in the fourth step in the range of the grouting time.
2. The method for strengthening and treating the broken zone of the fully mechanized mining face through advanced grouting according to claim 1, wherein the analyzing the occurrence state of the internal structure in the first step comprises the following steps:
s1, comprehensively analyzing the structure occurrence state in the working face by combining the geophysical prospecting result data with the underground engineering release data;
s2, implementing underground drilling exploration;
geophysical prospecting result data comprise ground high-density three-dimensional earthquake, fine explanation, underground pit penetration and channel waves;
the priority of the method in S1 is greater than the finite degree of the method in S2.
3. The fully mechanized mining face through-structure fracture zone advanced grouting reinforcement treatment method according to claim 1, wherein the grid-type geological profile comprises a plurality of parallel working faces and a plurality of vertical working faces, the interval between the plurality of parallel working faces is 9-12m, and the interval between the plurality of vertical working faces is 25-35 m.
4. The advanced grouting reinforcement treatment method for the fully mechanized mining face passing structural fracture zone according to claim 1, wherein in the second step, the foundation for making the technical scheme of the passing structure further comprises coal seam roof lithology, coal seam floor lithology and historical production experience;
the over-construction technical scheme comprises a working face stoping layer position, a top-raising amplitude, a bottom-stopping amplitude and an initial position.
5. The method for strengthening and treating the over-construction fractured zone of the fully mechanized mining face by advanced grouting according to claim 1, wherein the strengthening range in the third step comprises loose coal and loose rock.
6. The advanced grouting reinforcement treatment method for the fully mechanized mining face through-construction broken zone, which is characterized in that the grouting timing in the fifth step comprises the following ranges:
a1: grouting outside the influence range of the mining supporting pressure of the fully mechanized mining face, wherein the grouting comprises implementation before mining of the working face and implementation beyond 200 meters ahead of the working face;
a2: grouting a mining supporting pressure affected zone of the fully mechanized mining face, and constructing in advance when the grouting of the supporting pressure affected zone is 30-50 meters away from the mining face;
the priority of a1 is greater than the priority of a 2.
7. The fully mechanized mining face through-structure broken zone advanced grouting reinforcement treatment method according to claim 1, characterized in that the grouting process comprises a shallow hole grouting process and a deep hole grouting process;
the shallow hole grouting process comprises double-row arrangement and three-row arrangement, wherein the depth of holes in the double-row arrangement and the three-row arrangement is 5-8m, the aperture is 38-45mm, and the grouting pressure is 3-5 MPa;
the distance between a grouting hole and a tectonic fracture zone in the deep hole grouting process is 3-5m, the aperture of the grouting hole is any one of 75mm, 94mm and 113mm, the hole opening end of the grouting hole is sealed, the sealing depth is 10-20m, and the grouting pressure is 10-15 MPa.
8. The fully mechanized mining face through-construction crushing zone advanced grouting reinforcement treatment method according to claim 1, wherein the reinforcement material is JD-WJF-1 type inorganic reinforcement plugging material, and the water-cement ratio of the reinforcement material is 0.3-0.4: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110357811.7A CN113027467A (en) | 2021-04-01 | 2021-04-01 | Advanced grouting reinforcement treatment method for fully mechanized mining face passing through structural broken zone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110357811.7A CN113027467A (en) | 2021-04-01 | 2021-04-01 | Advanced grouting reinforcement treatment method for fully mechanized mining face passing through structural broken zone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113027467A true CN113027467A (en) | 2021-06-25 |
Family
ID=76454000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110357811.7A Pending CN113027467A (en) | 2021-04-01 | 2021-04-01 | Advanced grouting reinforcement treatment method for fully mechanized mining face passing through structural broken zone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113027467A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087015A (en) * | 2021-11-12 | 2022-02-25 | 中国矿业大学 | Mine solid waste disposal and working face collapse column crossing cooperation method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775084A (en) * | 2014-01-26 | 2014-05-07 | 四川川煤华荣能源股份有限公司花山煤矿 | Construction technology of large-inclined-angle and large-mining-height fully-mechanized coal mining equipment passing through geological-structured fracture zone |
| CN107448214A (en) * | 2017-08-18 | 2017-12-08 | 天地科技股份有限公司 | The large-scale lane pre-pouring grout method of geological structure crack coal and rock superdeep holes high pressure two |
| CN107905816A (en) * | 2017-11-08 | 2018-04-13 | 淮南矿业(集团)有限责任公司 | A kind of three-soft seam high-seam working face, which is faced upward, adopted more than 5m major fault methods |
| AU2020100227A4 (en) * | 2020-02-16 | 2020-03-26 | Xi'an University Of Science And Technology | Method for determining coal wall rib spalling of large mining-height fully-mechanized mining face of shallow coal seam |
| CN110985058A (en) * | 2019-12-26 | 2020-04-10 | 安徽理工大学 | Grouting reinforcement method for fault fracture zone of coal face |
| CN111594231A (en) * | 2020-06-03 | 2020-08-28 | 贵州盘江精煤股份有限公司 | Grouting reinforcement method for deep surrounding rock broken water erosion roadway |
-
2021
- 2021-04-01 CN CN202110357811.7A patent/CN113027467A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775084A (en) * | 2014-01-26 | 2014-05-07 | 四川川煤华荣能源股份有限公司花山煤矿 | Construction technology of large-inclined-angle and large-mining-height fully-mechanized coal mining equipment passing through geological-structured fracture zone |
| CN107448214A (en) * | 2017-08-18 | 2017-12-08 | 天地科技股份有限公司 | The large-scale lane pre-pouring grout method of geological structure crack coal and rock superdeep holes high pressure two |
| CN107905816A (en) * | 2017-11-08 | 2018-04-13 | 淮南矿业(集团)有限责任公司 | A kind of three-soft seam high-seam working face, which is faced upward, adopted more than 5m major fault methods |
| CN110985058A (en) * | 2019-12-26 | 2020-04-10 | 安徽理工大学 | Grouting reinforcement method for fault fracture zone of coal face |
| AU2020100227A4 (en) * | 2020-02-16 | 2020-03-26 | Xi'an University Of Science And Technology | Method for determining coal wall rib spalling of large mining-height fully-mechanized mining face of shallow coal seam |
| CN111594231A (en) * | 2020-06-03 | 2020-08-28 | 贵州盘江精煤股份有限公司 | Grouting reinforcement method for deep surrounding rock broken water erosion roadway |
Non-Patent Citations (1)
| Title |
|---|
| 高伟: "超前注浆加固技术在综放工作面过断层中的应用", 《山东煤炭科技》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087015A (en) * | 2021-11-12 | 2022-02-25 | 中国矿业大学 | Mine solid waste disposal and working face collapse column crossing cooperation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104763432B (en) | A kind of method that high stress tunnel country rock release controls large deformation | |
| CN105422170B (en) | Middle deep goaf grouting reinforcing and processing method under a kind of building foundation | |
| AU2021106168A4 (en) | High-gas Coal Seam Group Pressure Relief Mining Method Based on Gob-side Entry Retaining in the First Mining Whole Rock Pressure Relief Working Face | |
| CN110374600B (en) | Non-offset arrangement method for mining roadway of extremely-close coal seam group | |
| CN112377193B (en) | Deep well small coal pillar gob-side entry retaining method based on top breaking and pressure relief of lower key layer of top plate | |
| CN112832768B (en) | Roadway protection method based on small coal pillars | |
| CN111075448B (en) | Method for recovering residual ores in stope by shallow hole room-column method | |
| CN109236297B (en) | Coal mining method for remaining coal seam in residual mining area of cracking and filling combined ascending re-mining cutter column | |
| WO2011103620A1 (en) | A method of reducing subsidence or windblast impacts from longwall mining | |
| CN102536239A (en) | Long-wall working face coal pillar-free mining method | |
| CN110966002B (en) | Roof cutting pressure relief method based on intensive drilling | |
| CN107120137B (en) | A kind of coal roadway tunneling is along seat earth Deephole pre-splitting blasting pumping method | |
| CN112610218B (en) | Thick coal seam fully-mechanized top-tunneling top-cutting pressure relief automatic roadway forming method | |
| AU2015387618A1 (en) | Method for fracturing filler wall left behind in adjacent coal-mining face | |
| CN113187486A (en) | Gob-side entry driving method for deep well without coal pillar and formed entry | |
| CN110344831A (en) | Top release is cut without coal column along the sky lane self-contained Xiang Liu method | |
| CN107816366A (en) | A kind of multilayer goaf filling well is into well engineering method | |
| CN112983418A (en) | Method for hydraulic fracturing pressure relief of coal mine underground coal face withdrawal channel | |
| CN115012936B (en) | Pressure relief and danger relieving method for coal mine TBM during tunneling and coal penetration | |
| CN111594170B (en) | Method for stoping residual ore body on top and bottom plates of gently inclined ore body | |
| CN112814679A (en) | Pre-splitting blasting method for layered inclined fully-mechanized direct-covered hard roof of slowly-inclined thick coal seam | |
| CN103114854B (en) | Pillar robbing method of reconstructed artificial stud | |
| CN112780276A (en) | Fully-closed blasting pressure relief structure for grouting reconstruction of composite roof and self-retained roadway method | |
| CN113027467A (en) | Advanced grouting reinforcement treatment method for fully mechanized mining face passing through structural broken zone | |
| CN111022050B (en) | Fully-closed blasting pressure relief and self-retained roadway method for grouting reconstruction of composite roof |
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: 20210625 |