CN110009190A - A kind of safe coal production difficulty evaluation method based on water protection - Google Patents
A kind of safe coal production difficulty evaluation method based on water protection Download PDFInfo
- Publication number
- CN110009190A CN110009190A CN201910160661.3A CN201910160661A CN110009190A CN 110009190 A CN110009190 A CN 110009190A CN 201910160661 A CN201910160661 A CN 201910160661A CN 110009190 A CN110009190 A CN 110009190A
- Authority
- CN
- China
- Prior art keywords
- coal
- water
- mud capping
- safe
- mud
- 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.)
- Granted
Links
- 239000003245 coal Substances 0.000 title claims abstract description 108
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 101
- 238000011156 evaluation Methods 0.000 title claims abstract description 48
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 230000000694 effects Effects 0.000 claims abstract description 42
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 20
- 239000011707 mineral Substances 0.000 claims abstract description 20
- 229910052742 iron Inorganic materials 0.000 claims abstract description 14
- 239000004576 sand Substances 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 238000012360 testing method Methods 0.000 claims abstract description 6
- 230000008929 regeneration Effects 0.000 claims abstract description 5
- 238000011069 regeneration method Methods 0.000 claims abstract description 5
- 238000005065 mining Methods 0.000 claims description 55
- 239000011435 rock Substances 0.000 claims description 39
- 239000010410 layer Substances 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 27
- 239000002689 soil Substances 0.000 claims description 20
- 239000011241 protective layer Substances 0.000 claims description 7
- 238000000605 extraction Methods 0.000 claims description 6
- 230000008961 swelling Effects 0.000 claims description 6
- 239000003610 charcoal Substances 0.000 claims description 4
- 240000002853 Nelumbo nucifera Species 0.000 claims description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims description 3
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 7
- 230000018044 dehydration Effects 0.000 abstract description 6
- 238000006297 dehydration reaction Methods 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 description 8
- 238000011161 development Methods 0.000 description 5
- 230000018109 developmental process Effects 0.000 description 5
- 239000004927 clay Substances 0.000 description 4
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 4
- 229910052900 illite Inorganic materials 0.000 description 4
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 4
- 229910052622 kaolinite Inorganic materials 0.000 description 4
- 229910052901 montmorillonite Inorganic materials 0.000 description 4
- VGIBGUSAECPPNB-UHFFFAOYSA-L nonaaluminum;magnesium;tripotassium;1,3-dioxido-2,4,5-trioxa-1,3-disilabicyclo[1.1.1]pentane;iron(2+);oxygen(2-);fluoride;hydroxide Chemical compound [OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[F-].[Mg+2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[K+].[K+].[K+].[Fe+2].O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2 VGIBGUSAECPPNB-UHFFFAOYSA-L 0.000 description 4
- 239000002734 clay mineral Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000002591 computed tomography Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009705 shock consolidation Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910021532 Calcite Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
- G06Q10/063—Operations research, analysis or management
- G06Q10/0639—Performance analysis of employees; Performance analysis of enterprise or organisation operations
- G06Q10/06393—Score-carding, benchmarking or key performance indicator [KPI] analysis
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/02—Agriculture; Fishing; Forestry; Mining
Landscapes
- Business, Economics & Management (AREA)
- Human Resources & Organizations (AREA)
- Engineering & Computer Science (AREA)
- Strategic Management (AREA)
- Economics (AREA)
- Theoretical Computer Science (AREA)
- General Business, Economics & Management (AREA)
- Entrepreneurship & Innovation (AREA)
- Educational Administration (AREA)
- Development Economics (AREA)
- General Physics & Mathematics (AREA)
- Marketing (AREA)
- Physics & Mathematics (AREA)
- Tourism & Hospitality (AREA)
- Marine Sciences & Fisheries (AREA)
- Primary Health Care (AREA)
- Mining & Mineral Resources (AREA)
- Animal Husbandry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Health & Medical Sciences (AREA)
- Game Theory and Decision Science (AREA)
- Operations Research (AREA)
- Quality & Reliability (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The safe coal production difficulty evaluation method based on water protection that the invention discloses a kind of, comprising: sand coated iron mold and mineral composition at the top of detection of coal seam；According to the sand coated iron mold and mineral composition, determine the coal seam with the presence or absence of mud capping effect；The mud capping effect if it exists is detected under mud capping effect effect, the height of the water conductive fracture zone in the coal seam；Test mud capping makes band position, thickness and regeneration water-resisting property up；It makes the height of the leaking crevice belt and the mud capping the sum of up thickness of band and obtains the evaluation of safe coal exploitation in conjunction with quantizating index as premise index to the relationship of distance between water content at the top of the coal seam.Safe coal production difficulty evaluation method provided by the invention based on water protection can be improved coal recovery rate, makes water content not dehydration or few dehydration, achievees the effect that water protection.
Description
Technical field
The present invention relates to technical field of coal exploitation, particularly relate to a kind of safe coal production difficulty evaluation based on water protection
Method.
Background technique
After coal mining, since roof overlying strata move, deform, destroy, mining induced fissure, i.e. leeding water rent are formed
Band.Development height, range, the form of leaking crevice belt have its own regularity, special with overlying strata mechanical strength, overlying strata lithologic structure
The factors such as sign, rock forming mineral composition, lithology are closely bound up.When water content cannot be connected by adopting the leaking crevice belt formed, then
Coal mine roof plate water damage accident or level of ground water decline, water environment destructive insident will not occur.It develops and is connected to when leaking crevice belt
When underground reservoir or surface water body (river, river, lake, pool, reservoir etc.), Yi Fasheng coal mine roof plate gushing water causes aquifer water
It is lost, level of ground water decline destroys water environment ecology.Currently, leaking crevice belt development height is according to " building, water body, railway
And main roadway coal column is stayed and is set and mining pressed coal specification " in the formula that provides carry out, it is expected that but the formula be not suitable for single layer and adopt
Thickness exploits the estimated of the leaking crevice belt development height to be formed to super high seam greater than the thickness of 3m.It should " specification " mainly proposition use
The method for staying water security coal petrography column of setting up defences prevents top plate water damage accident, and is not related to water-protection coal-mining method.
When, there are when the incompetent beds such as argillite, unconsolidated formation (referred to as " mud capping layer "), water guide is split in roof overlying strata
Seamed belt in the pinching of mud capping layer or can be suppressed, and overburden rock damage is obviously relatively low compared with no mud capping earth formation, and mud capping layer is to leading
Water crack sewer has inhibition, makes repair up, is formed " mud capping effect ".Roof mining induced fissure involves thick if it exists in range
, easily there is mud capping effect in layer flowing rock formation, and it is unique which acts on lower Overburden Rock Failure Spatio-Temporal Change Characteristics.Currently, still
Determination method and criterion of the nothing to mud capping effect.Therefore mining area is exploited for mine outcrop mining area or thin bedrock, thick mud capping,
The key problem understanding of the evaluation and mining Design of safe working or water protection mining safety under coal mine water body is unclear.Often incite somebody to action
Height of the water conductive fracture zone under the conditions of this geology, it is contemplated that must be more even more than being actually higher by 1 times, causing consequence is one side coal
Ore mining height drastically reduces, and causes coal resources huge waste；On the other hand, exaggerate pit mining to the influence degree of water content,
Make supervision department from environmental protection aspect can exploiting field coal be divided into prohibit exploiting field, or make mine be forced using production effect
The adverse consequences such as rate is low, recovery method at high cost, results in waste of resources, and mine life cycle reduces.
Summary of the invention
In view of this, it is an object of the invention to propose a kind of safe coal production difficulty evaluation method based on water protection,
The rate of recovery of coal resources can be improved.
Based on above-mentioned purpose, the safe coal production difficulty evaluation method based on water protection that the present invention provides a kind of is special
Sign is, comprising:
Sand coated iron mold and mineral composition at the top of detection of coal seam；
According to the sand coated iron mold and mineral composition, determine the coal seam with the presence or absence of mud capping effect；
The mud capping effect if it exists is detected under mud capping effect effect, the height of the water conductive fracture zone in the coal seam；
Test mud capping makes band position, thickness and regeneration water-resisting property up；
By the height of the leaking crevice belt and the mud capping make up the sum of thickness of band at the top of the coal seam to aqueous
The relationship of distance obtains the evaluation of safe coal exploitation in conjunction with quantizating index as premise index between body.
Optionally, the sand coated iron mold include: lithology, thickness, the mechanical property of Rock And Soil, the geotechnical properties of Rock And Soil,
The hydrophysical property of Rock And Soil and the mineralogical property of Rock And Soil.
Optionally, described to determine that the coal seam whether there is mud capping effect, comprising: while meeting basement rock pillar height degree and being less than etc.
When 8~10 times of mining heights, mud capping layer height are more than or equal to 5~9 times of mining heights and mud capping layer mineral have dilatancy, then determine to deposit
In the mud capping effect.
Optionally, there is the mud capping layer mineral expansile location parameter to include: free swelling rate, have lateral confinement swollen without lotus
There is lateral confinement expansion rate under swollen rate and 50KPa pressure.
Optionally, described to detect under mud capping effect effect, the measurement side of the height of the water conductive fracture zone in the coal seam
Method includes: pouring water into borehole method, rock stratum equivalent material simulating method, CT scan method or deep dynamic consolidation head pry through method in hole.
Optionally, the quantizating index includes: the mud capping layer that the mud capping makes the multiple proportion of band and mining height up or makes up
Highly.
Optionally, obtaining coal can be with the evaluation of safe working, comprising: with the height of the water conductive fracture zone and the mud capping
It makes the sum of tape thickness up to be less than at the top of the coal seam to the distance between water content, and the mud capping makes band up and has 1
When the mud capping layer made up described in~6 times of mining heights or 3~6m, obtaining coal can be with the evaluation of safe working.
Optionally, obtain coal cannot safe working evaluation, comprising: when the height of the water conductive fracture zone and the mud
Lid make up the sum of tape thickness be more than at the top of the coal seam between water content apart from when, obtain coal cannot safe working comment
Valence；The sum of tape thickness is made up with the height of the water conductive fracture zone and the mud capping to be less than at the top of the coal seam between water content
Premised on distance, when the mud capping makes band up and do not have the mud capping layer made up described in 1~6 times of mining height or 3~6m, coal is obtained
Charcoal cannot safe working evaluation.
Optionally, after acquisition coal can be with the evaluation of safe working, further includes: melted using longwall comprehensive mechanical
Adopt mode or mining mining method.
Optionally, when obtain coal cannot safe working evaluation after, further includes: use limited thickness extrac tion mode, width
Striping noise mode, filling mining mode or room and pillar mining mode.
From the above it can be seen that the safe coal production difficulty evaluation method provided by the invention based on water protection passes through
Judge that mud capping effect, measurement mud capping effect act on lower height of the water conductive fracture zone, mud capping makes the selection of tape thickness up, formed and improve coal
Safe coal under the charcoal rate of extraction, guarantee coal mine production safety, water content not dehydration or the thick mud capping formation condition of few dehydration is opened
Adopt Slope map of pixels；Mud capping is made up to the protective layer reserved with substitution, makes up in existing " specification " by reserving protective layer, reduces
The shortcomings that coal resources rate of extraction.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the safe coal production difficulty evaluation method flow schematic diagram provided in an embodiment of the present invention based on water protection；
Mud capping effect acts on schematic diagram when Fig. 2 is basement rock thickness provided in an embodiment of the present invention；
Fig. 3 is that mud capping effect acts on schematic diagram when basement rock provided in an embodiment of the present invention is thin.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.
Refering to what is shown in Fig. 1, one embodiment of the safe coal production difficulty evaluation method of the invention based on water protection, packet
Include following steps:
Step 101: detection of coal seam roof overburden structure and mineral composition.
In some alternative embodiments, coal is measured by the way that roof earth's surface is carried out prospecting by boring in step 101
The lithology of layer overlying strata each layer of position, thickness and Rock And Soil properties, the drafting earth formation such as mechanics, geotechnique, water reason, mineral cut open
Face figure.
Clay mineral content in the soil body, have expansion, shrink, absorb, dispersion, cohesion, bonding, adhesion and plasticity it is special
Sign is the principal element for controlling soil body physics, mechanics and hydrophysical property, and even more evaluation unconsolidated formation contains, water-resisting property and resisting mining become
The important evidence of sexuality, specify the lithology of each layer of position of coal seam overlying strata, thickness, the mechanical property of Rock And Soil, Rock And Soil soil
The properties such as mineral of work property, the hydrophysical property of Rock And Soil, Rock And Soil are whether evaluation coal can be with the premise of safe working.
Step 102: according to the sand coated iron mold and mineral composition, determining the coal seam with the presence or absence of mud capping effect.
In some alternative embodiments, determine whether that there are mud capping effects described in step 102, including walk as follows
It is rapid:
Test sand coated iron mold in kaolinite, illite, the big clay mineral of montmorillonite three and quartz, feldspar, calcite or
The non-clay minerals such as hornblend content and its granular size.When clay plasticity index Ip > 13, kaolinite, illite, montmorillonite
When the mineral content > 50% of ingredient > 45%, particle > 0.075mm, illustrate that the mud capping layer generates mud capping effect a possibility that ratio
It is larger.Kaolinite has a water imbibition when dry, and when hygrometric state has plasticity, but water is added not expand；Illite is substantially without expansion
Property and plasticity；Montmorillonite water swelling is high, causes rock porosity and permeability decrease obvious.When kaolinite, illite,
When montmorillonite ingredient > 45%, indicate that the sand coated iron mold meets water and has certain softening transform characteristic；When the clay of sand coated iron mold
When the mineral content > 50% of particle > 0.075mm, indicate that grain diameter is larger, water stability and water isolating are poor.It is above-mentioned
Quantizating index is the inherent index for determining mud capping effect, assists the indexs such as the mud depth of cover of overlying strata, can comprehensive judgement mud capping effect
It should whether there is.
Basement rock column is less than or equal to 8~10 times of mining heights, mud capping layer has more than or equal to 5~9 times of mining heights and mud capping layer mineral
Obvious dilatancy determines that there are mud capping effects for aforementioned roof sand coated iron mold when meeting three above judgment criteria simultaneously.
Measure the above-mentioned expansile index of mud capping layer mineral, free swelling rate including mud capping layer mineral, have without lotus lateral confinement expansion rate,
There is lateral confinement expansion rate under 50KPa pressure；The size for having lateral confinement expansion rate of cohesive soil mainly contains with the compaction rate of clay, naturally
The structure conjoint of water rate and soil is related, and free swelling rate is dilatancy of clay under the influence of no structural capacity, illustrates viscosity
The trend of soil expansion, therefore selection has lateral confinement expansion rate and the two indexs of free swelling rate to evaluate the dilatancy of argillic horizon.
After cohesive soil expands, the crack for exploiting formation is blocked, and water penetration becomes smaller.If leaking crevice belt top caused by exploiting
Minute fissure and the dilatancy for adopting the compression shear type location of cracks soil body in body of breaking ground are preferable, then crack can be in the generation of mining influence
Be voluntarily closed in development process, reduce height of the water conductive fracture zone, formed mud capping effect.
Step 103: the mud capping effect if it exists is detected under mud capping effect effect, the coal seam leeding water rent
Band height.
In some alternative embodiments, the mud capping effect of detecting in step 103 acts on lower leaking crevice belt height
The method of degree includes pouring water into borehole method, rock stratum equivalent material simulating method, CT scan method, deep dynamic consolidation head pry through method etc. in hole.It is logical
The suppressed variation law that integration test mud capping effect acts on lower overburden rock damage is crossed, detects and leads under the conditions of different sand coated iron molds
Water crack seamed belt reduces degree.
In the present embodiment, refering to what is shown in Fig. 2, leaking crevice belt 2 is in basement rock column when rock section 1 is sufficiently thick in overlying strata
It reaches full growth, development height is relatively large, does not enter soft rock mud capping layer 3, turns on underground reservoir 4；On the contrary, with reference to Fig. 3 institute
Show, when rock section 1 is thin or is not able to satisfy basement rock height that leaking crevice belt 2 reaches full growth, leaking crevice belt 2 enters soft in advance
Rock mud capping layer 3, mining induced fissure is developed upwards to be suppressed, leaking crevice belt 2 in soft rock mud capping layer 3 gradually pinching, make up, mud
Mining induced fissure in cap rock has water proof ability again, is formed " mud capping makes band up ", final water guide is split through overcompaction, closure
Gap does not descend water content 4 communicatively, prevents underground reservoir 4 to coal mine work area water burst well, while protecting water content
And water content water level keeps stablizing, and protects ecological environment.
Step 104: test mud capping makes band position, thickness, regeneration water-resisting property up；
In some alternative embodiments, the thickness of band is made up by drilling actual measurement mud capping in step 104 and its meets water
Expansion characteristics make feature up.Mud capping makes band up and is located in mud capping layer, and is normally at leaking crevice belt middle and upper part.Coal mining
Process will necessarily generate mining induced fissure, and under the gravity of superstratum, mining induced fissure gradually makes up, so that mining induced fissure is not
Has water transmitting ability again.Mud capping makes the detection of band and its detection of regeneration water-resisting property up, so that opening in coal mining under water bodies and water conservation
Originally reserved protective layer can be given up in adopting, with going between evaluation leaking crevice belt and water body using the water-resisting property that mud capping makes band up
The water proof ability of layer, relatively increases the safe distance between roof and water body.Mud capping makes that band is thicker up, mining induced fissure
Vertical communication is poorer, and it is stronger to regenerate water proof ability.
Step 105: making the height of the leaking crevice belt and the mud capping the sum of up thickness of band and pushed up with the coal seam
The relationship of portion to distance between water content obtains the evaluation of safe coal exploitation in conjunction with quantizating index as premise index.
In some alternative embodiments, in step 105, the quantizating index includes times that mud capping makes band up with mining height
Number relationship or the mud capping layer height made up.The sum of tape thickness is made up with the height of the water conductive fracture zone and the mud capping is less than institute
Premised on stating coal seam top to the distance between water content, i.e., leaking crevice belt does not turn on water content, and the mud capping makes band up
When having the mud capping layer made up described in 1~6 times of mining height or 3~6m, obtaining coal can be with the evaluation of safe working.The coal mine
The safety coal extraction and water-retaining production not threatened by top plate water damage can be achieved.Specifically, longwall comprehensive mechanization can be used
Mining method or mining mining method.Under the conditions of mud capping makes up with existing for, exploitation protective layer is set without staying, it can be straight
Connected diminution waterproof safety coal and rock pillar height, expansion can productive area, to improve coal recovery rate.
It is more than at the top of the coal seam between water content when height of the water conductive fracture zone and the mud capping make the sum of tape thickness up
Apart from when, obtain coal cannot safe working evaluation；Tape thickness is made up with the height of the water conductive fracture zone and the mud capping
The sum of be less than at the top of the coal seam to the distance between water content, the mud capping make up band do not have 1~6 times described in adopt
When the mud capping layer made up described in high or 3~6m, obtain coal cannot safe working evaluation；Both the above situation can get
The coal cannot safe working evaluation.Specifically, then it is opened using limited thickness extrac tion, great width stripe mining, filling mining, house column type
The higher costs such as adopt, the lower recovery scheme of production efficiency, specific operational parameter according to the mechanical property of coal seam sand coated iron mold, cover
Rock lithologic structure, basement rock and loose seam's thickness, movement and deformation of overburden strata parameter etc. are comprehensive to determine recovery scheme, these partial mining sides
Method is the mining technique measure that crucial control leeding water rent does not develop acutely upwards.
From above-described embodiment as can be seen that safe coal production difficulty evaluation method provided by the invention, passes through detection of coal seam top
Plate earth formation determines whether that there are mud capping effects, and makes band up according to the lower leaking crevice belt of mud capping effect effect and mud capping
Particularity judges coal mining method and water conservation technical measures.For existing coal mining mode, proposed in existing " specification "
Using water security coal petrography column of setting up defences is stayed, that is, the method prevention top plate water damage accident for setting exploitation " protective layer " is stayed, and be not related to being retained
Coal-mining method.Compared to existing " specification ", safe coal production difficulty evaluation method provided by the invention can open standard-sized sheet in acquisition and adopt
Grading after, then can need not stay and set exploitation " protective layer ", so improve coal recovery ratio, make water content not dehydration or few dehydration.
It should be understood by those ordinary skilled in the art that: the discussion of any of the above embodiment is exemplary only, not
It is intended to imply that the scope of the present disclosure (including claim) is limited to these examples；Under thinking of the invention, above embodiments
Or can also be combined between the technical characteristic in different embodiments, step can be realized with random order, and be existed such as
Many other variations of the upper different aspect of the invention, for simplicity, they are not provided in details.
The embodiment of the present invention be intended to cover fall into all such replacements within the broad range of appended claims,
Modifications and variations.Therefore, all within the spirits and principles of the present invention, any omission, modification, equivalent replacement, the improvement made
Deng should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of safe coal production difficulty evaluation method based on water protection characterized by comprising
Sand coated iron mold and mineral composition at the top of detection of coal seam；
According to the sand coated iron mold and mineral composition, determine the coal seam with the presence or absence of mud capping effect；
The mud capping effect if it exists is detected under mud capping effect effect, the height of the water conductive fracture zone in the coal seam；
Test mud capping makes band position, thickness and regeneration water-resisting property up；
The height of the leaking crevice belt and the mud capping are made the sum of up thickness of band with the coal seam top between water content
The relationship of distance obtains the evaluation of safe coal exploitation in conjunction with quantizating index as premise index.
2. the safe coal production difficulty evaluation method according to claim 1 based on water protection, which is characterized in that work as acquisition
After coal can be with the evaluation of safe working, the mud capping is made up with the protective layer for substituting the coal seam top preset, to institute
Coal is stated to be exploited.
3. the safe coal production difficulty evaluation method according to claim 1 based on water protection, which is characterized in that described to cover
Rock structure include: lithology, thickness, the mechanical property of Rock And Soil, the geotechnical properties of Rock And Soil, Rock And Soil hydrophysical property and ground
The mineralogical property of body.
4. the safe coal production difficulty evaluation method according to claim 1 based on water protection, which is characterized in that described to sentence
The fixed coal seam whether there is mud capping effect, comprising:
Meet basement rock pillar height degree simultaneously and is more than or equal to 5~9 times of mining heights and mud less than or equal to 8~10 times of mining heights, mud capping layer height
When cap rock mineral have dilatancy, then determine that there are the mud capping effects.
5. the safe coal production difficulty evaluation method according to claim 3 based on water protection, which is characterized in that the mud
There is cap rock mineral expansile location parameter to include: free swelling rate, have under lateral confinement expansion rate and 50KPa pressure without lotus and have side
Limit expansion rate.
6. the safe coal production difficulty evaluation method according to claim 1 based on water protection, which is characterized in that the amount
Changing index includes:
The mud capping layer height that the mud capping makes the multiple proportion of band and mining height up or makes up.
7. the safe coal production difficulty evaluation method according to claim 6 based on water protection, which is characterized in that obtain coal
Charcoal can be with the evaluation of safe working, comprising:
The sum of tape thickness is made up with the height of the water conductive fracture zone and the mud capping to be less than at the top of the coal seam between water content
Distance premised on, and when the mud capping makes band up and has the mud capping layer made up described in 1~6 times of mining height or 3~6m, obtain
Coal can be with the evaluation of safe working.
8. the safe coal production difficulty evaluation method according to claim 6 based on water protection, which is characterized in that obtain coal
Charcoal cannot safe working evaluation, comprising:
It is more than at the top of the coal seam between water content when the height of the water conductive fracture zone and the mud capping make the sum of tape thickness up
Apart from when, obtain coal cannot safe working evaluation；
The sum of tape thickness is made up with the height of the water conductive fracture zone and the mud capping to be less than at the top of the coal seam between water content
Distance premised on, when the mud capping makes band up and do not have the mud capping layer made up described in 1~6 times of mining height or 3~6m, obtain
Coal cannot safe working evaluation.
9. the safe coal production difficulty evaluation method according to claim 7 based on water protection, which is characterized in that work as acquisition
After coal can be with the evaluation of safe working, further includes:
Using longwall fully-mechanized mining mode or mining mining method.
10. the safe coal production difficulty evaluation method according to claim 8 based on water protection, which is characterized in that when obtaining
Coal cannot be after the evaluation of safe working, further includes:
Using limited thickness extrac tion mode, great width stripe mining mode, filling mining mode or room and pillar mining mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910160661.3A CN110009190B (en) | 2019-03-04 | 2019-03-04 | Coal safety mining evaluation method based on water body protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910160661.3A CN110009190B (en) | 2019-03-04 | 2019-03-04 | Coal safety mining evaluation method based on water body protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110009190A true CN110009190A (en) | 2019-07-12 |
| CN110009190B CN110009190B (en) | 2021-09-28 |
Family
ID=67166308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910160661.3A Active CN110009190B (en) | 2019-03-04 | 2019-03-04 | Coal safety mining evaluation method based on water body protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110009190B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112502775A (en) * | 2020-11-06 | 2021-03-16 | 扎赉诺尔煤业有限责任公司 | Semi-consolidated sandstone aquifer dewatering and pressure reducing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266893A (en) * | 2013-05-08 | 2013-08-28 | 中国矿业大学(北京) | Application of non-coal-pillar coal mining method in under-protected stratum exploitation |
| US20180278342A1 (en) * | 2011-06-22 | 2018-09-27 | David H. Parker | Apparatus and Methods for Emergency Mine Communications Using Acoustic Waves, Time Synchronization, and Digital Signal Processing |
| CN108805352A (en) * | 2018-06-08 | 2018-11-13 | 中国矿业大学 | A kind of exploiting field overlying strata separation layer water water damage hazard assessment method |
-
2019
- 2019-03-04 CN CN201910160661.3A patent/CN110009190B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180278342A1 (en) * | 2011-06-22 | 2018-09-27 | David H. Parker | Apparatus and Methods for Emergency Mine Communications Using Acoustic Waves, Time Synchronization, and Digital Signal Processing |
| CN103266893A (en) * | 2013-05-08 | 2013-08-28 | 中国矿业大学(北京) | Application of non-coal-pillar coal mining method in under-protected stratum exploitation |
| CN108805352A (en) * | 2018-06-08 | 2018-11-13 | 中国矿业大学 | A kind of exploiting field overlying strata separation layer water water damage hazard assessment method |
Non-Patent Citations (1)
| Title |
|---|
| 樊振丽: "纳林河复合水体下厚煤层安全可采性研究", 《中国博士学位论文全文库 工程科技I辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112502775A (en) * | 2020-11-06 | 2021-03-16 | 扎赉诺尔煤业有限责任公司 | Semi-consolidated sandstone aquifer dewatering and pressure reducing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110009190B (en) | 2021-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105422170B (en) | Middle deep goaf grouting reinforcing and processing method under a kind of building foundation | |
| Singh et al. | Sinkhole subsidence due to mining | |
| CN107044289A (en) | A kind of water damage prevention and controls of bored grouting closure overlying strata water producing fractures main channel | |
| WO2018233320A1 (en) | Coal mine underground reservoir and multi-layer grouting-based anti-seepage reinforcement method for reservoir dam | |
| CN100560937C (en) | A kind of thin basic rock shallow buried coal seam longwall face water retaining exploitation method | |
| CN104386409B (en) | A kind of coal field surface drilling guides water source to store the water-retaining method in goaf | |
| CN107339105B (en) | A method of stop adopting line coal column in the layering residual exploiting field of paste body filling second mining super high seam | |
| CN107387082A (en) | A kind of method for weakening coal seam tight roof | |
| WO2018233329A1 (en) | Drilling and grouting detection method for distribution characteristics of mining-induced bed separation in overlying strata | |
| CN108663724B (en) | Coal mine underground reservoir position selection method based on water resource transfer path | |
| CN104330107A (en) | Method for evaluating filling quality of solid filling coal mining working face | |
| CN103953386A (en) | Upstream-blocking and downstream-seepage method for extracting gas in mining area | |
| CN107151956A (en) | It is a kind of to there is pressure to return the grouting method that slurry reinforces covered karst embankment | |
| CN209100019U (en) | It is a kind of based on mid-deep strata sandstone heat storage geothermal reinjection well at well construction | |
| Bai et al. | Some aspects of mining under aquifers in China | |
| CN111764960B (en) | Coal mining separation layer water damage prevention and control method | |
| Shirlaw et al. | Design and construction issues for excavation and tunnelling in some tropically weathered rocks and soils | |
| Higginbottom | Paper 1 THE ENGINEERING GEOLOGY OF CHALK | |
| CN110009190A (en) | A kind of safe coal production difficulty evaluation method based on water protection | |
| Lecomte et al. | Case studies and analysis of mine shafts incidents in Europe | |
| CN107313743B (en) | Method for repairing weak zone of coal seam floor water-resisting layer by utilizing coal seam gas well | |
| CN110749533B (en) | Water-retention coal mining discrimination method based on equivalent water-resisting layer thickness | |
| CN112664192A (en) | Method for improving coal mining upper limit in thin bedrock area | |
| CN114444266A (en) | Feasibility evaluation method for improving recovery upper limit safety mining of coal seam under near unconsolidated formation | |
| Xu et al. | Water disaster types and water control measures of Hanxing coal mine area |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |