CN109162712A - A method of control avalanche goaf above rock differential settlement - Google Patents
A method of control avalanche goaf above rock differential settlement Download PDFInfo
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- CN109162712A CN109162712A CN201811003812.6A CN201811003812A CN109162712A CN 109162712 A CN109162712 A CN 109162712A CN 201811003812 A CN201811003812 A CN 201811003812A CN 109162712 A CN109162712 A CN 109162712A
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- 239000011435 rock Substances 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000005065 mining Methods 0.000 claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 claims abstract description 30
- 230000006698 induction Effects 0.000 claims abstract description 16
- 239000013589 supplement Substances 0.000 claims abstract description 11
- 238000004880 explosion Methods 0.000 claims abstract description 5
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract 1
- 229910001570 bauxite Inorganic materials 0.000 description 10
- 239000003245 coal Substances 0.000 description 9
- 239000004927 clay Substances 0.000 description 8
- 239000002689 soil Substances 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 3
- 230000009469 supplementation Effects 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- General Life Sciences & Earth Sciences (AREA)
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- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention discloses a kind of methods for controlling avalanche goaf above rock differential settlement, comprising: according to immediate roof rock stratum stability, determines the height h of avalanche top plate1；Utilize the height h of the avalanche top plate1Establish dead zone back production height H and overlying strata differential settlement height H1Relationship, determine induction control top upper centripetal deep hole blast hole depth h2；The compensation gap that explosion changes goaf in overlying strata, control overlying mining rock differential settlement height H are controlled by avalanche top plate and upper centripetal deep hole1Less than or equal to the spacing H ' for needing rock stratum and working seam to be protected.This method passes through the proprietary technologies such as avalanche top plate, upper centripetal deep hole control top, supplement filling, establish the relationship of dead zone back production height and overlying strata moving range, the range of effective control overlying mining rock inbreak and differential settlement, guarantee top is not dug up mine, and by lower part, working seam is not influenced layer.
Description
Technical field
The present invention relates to mining settlement Control field more particularly to a kind of control avalanche goaf above rock are uneven
The method of even sedimentation.
Background technique
When multiple slight slope and thin ore bodies are in multilayer preservation, through being exploited frequently with uplink mode.Lower part coal mining is formed
Goaf be disposed frequently with the methods of avalanche, natural caving, this can be such that dead zone above rock generates in a big way
Big displacement, deformation or inbreak causes top that cannot exploit due to destruction adjacent to ore bed because being broken, misplacing etc..At this time, it may be necessary to protect
The integrality for unminding ore bed apart from lower part working seam certain distance, the i.e. ore bed need integral sinking, uniform settlement, but
Big differential settlement is not generated, does not generate fracture, this requirement controls the movement and deformation of overlying strata.Such as certain low-angle dip alumina
Mine lean ore body average thickness is 2.0m~4.0m, and inclination angle is less than 20 °, stratiform, like stratiform output；Immediate roof is viscous for weak broken
Tu Yan；Coal seam and bauxite layer spacing averagely about 41m.It is restricted by capital investment, mining cost and filling aggregate source, it is conventional
Filling treatment goaf method it is infeasible in Technological Economy；Direct avalanche goaf top plate, rock stratum (i.e. above rock
Layer) a wide range of uneven displacement can be generated, superjacent is destroyed, not can guarantee the normal exploitation in subsequent coal seam.
Summary of the invention
Based on the problems of prior art, the object of the present invention is to provide a kind of control avalanche goaf above rocks
The method of differential settlement, the coverage that can be effectively controlled cover rock caving and unevenly move, avoids top from unminding ore bed
By lower part, working seam is not influenced.
The purpose of the present invention is what is be achieved through the following technical solutions:
Embodiment of the present invention provides a kind of method for controlling avalanche goaf above rock differential settlement, comprising:
According to immediate roof rock stratum stability, the height h of avalanche top plate is determined1；
Utilize the height h of the avalanche top plate1Establish dead zone back production height H and overlying strata differential settlement height H1Relationship,
Determine the blast hole depth h of the upper centripetal deep hole on induction control top2；
The compensation gap that explosion changes goaf in overlying strata is controlled by avalanche top plate and upper centripetal deep hole, control overlying mining rock is not
Uniform settlement height H1Less than or equal to the spacing H ' for needing rock stratum and working seam to be protected.
As seen from the above technical solution provided by the invention, on control avalanche goaf provided in an embodiment of the present invention
The method of country rock differential settlement is covered, it has the advantage that:
By avalanche top plate, medium-length hole induction control top, the range of control overlying mining rock differential settlement, appropriate supplement filling reduces
The mining height of equal value of stope makes to realize away from the overlying strata uniform settlement of working seam certain distance while handling goaf
Can be on to the uneven moving range of the requirement control overlying mining rock layer of protective mining, this method puts into without construction early period, is comprehensive
It closes at low cost, solves the problems, such as that part filling in mine aggregate is insufficient, it, can be safe for low-angle dip alternating layers lean ore body after implementation
Economy realizes Upward mining.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is overlying strata differential settlement range diagrammatic cross-section provided in an embodiment of the present invention；
In figure, 1 is lower part ore bed；2 be the range of overlying strata differential settlement；3 be overlying seam；4 be upper centripetal deep hole big gun
Hole；5 be avalanche top plate blasthole；h1For the height of avalanche top plate；h2For the blast hole depth of upper centripetal deep hole；H1It is uneven for overlying strata
Settling height；H is lower part ore bed mining height；L is across pitch back production length；L1The span of body is caving for overlying strata；K is the broken swollen system of overlying strata
Number；α is the angle of Caved ore body arching；ε0For the intracorporal voidage of avalanche；ε2For across falling intracorporal voidage；H0For Caved ore body
Highly (Caved ore body refers to overlying strata Caved ore body)；H2For the height (be caving finger overlying strata described in body and be caving body) for being caving body.
Specific embodiment
Below with reference to particular content of the invention, technical solution in the embodiment of the present invention is clearly and completely retouched
It states, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts,
Belong to protection scope of the present invention.The content being not described in detail in the embodiment of the present invention belongs to professional and technical personnel in the field
The well known prior art.
The embodiment of the present invention provides a kind of method for controlling avalanche goaf above rock differential settlement, can be effectively controlled
Cover rock caving and the coverage unevenly moved guarantee that working seam is not influenced the non-ore bed in top by lower part, comprising:
According to immediate roof rock stratum stability, the height h of avalanche top plate is determined1；
Utilize the height h of the avalanche top plate1Establish dead zone back production height H and overlying strata differential settlement height H1Relationship,
Determine the blast hole depth h of the upper centripetal deep hole on induction control top2；
The compensation gap that explosion changes goaf in overlying strata is controlled by avalanche top plate and upper centripetal deep hole, control overlying mining rock is not
Uniform settlement height H1Less than or equal to the spacing H ' for needing rock stratum and working seam to be protected.
In the above method, if the overlying strata differential settlement height H after control1Being still greater than needs rock stratum to be protected and exploitation
The spacing H ' of ore bed then carries out supplement filling to the compensation gap in goaf in overlying strata and reduces mining height of equal value, until overlying strata are uneven
Even settling height H1Less than or equal to the spacing H ' for needing rock stratum and working seam to be protected.
In the above method, the pack completeness β that supplement filling reduces mining height of equal value is carried out to the compensation gap in goaf in overlying strata
For (H-H')/H；Wherein, H is dead zone back production height, and H ' is the spacing of rock stratum and working seam.
In the above method, according to immediate roof rock stratum stability, the height h of avalanche top plate is determined1Are as follows:
To the ore body that immediate roof rock stratum consolidates, does not stay and set shield top ore bed, the height h of avalanche top plate1Equal to 2.5H,
In, H is dead zone back production height；
The ore body frangible to immediate roof rock stratum stays and sets shield top ore bed, if the broken swollen coefficient of rock stratum is k, when frangible straight
When connecing ceiling height more than or equal to H/k, the height h of avalanche top plate1Seam thickness is pushed up greater than shield；When frangible immediate roof height
When less than H/k, the height h of avalanche top plate1Equal to H/k.
In the above method, the ore body frangible to immediate roof, the height h of avalanche top plate1When pushing up seam thickness greater than shield, collapse
The height h of caving plate1Equal to 1.5~2.5m；As the height h of avalanche top plate1When equal to H/k, if the thickness of lean ore body is less than 5m,
The then height h of avalanche top plate1Less than 4m.
In the above method, the height h of the avalanche top plate is utilized1The dead zone back production height and overlying strata differential settlement of foundation
Height H1Relationship are as follows:
H1=f (H, ε0,ε2,h1)=f (H, k, ε2,h1)；
Wherein, H1For overlying strata differential settlement height, H is dead zone back production height, ε0For the intracorporal voidage of avalanche；ε2For
Across falling intracorporal voidage；h1For the height of avalanche top plate；K is the broken swollen coefficient of overlying strata.Overlying strata in each symbolic interpretation refer both to
Cover country rock.
In the above method, the height h of the avalanche top plate is utilized1The dead zone back production height H of foundation unevenly sinks with overlying strata
Height H drops1Relationship in, by following formula join solution calculate overlying strata differential settlement height H1, comprising:
H0=h1·k；
Wherein, H is dead zone back production height, and L is across pitch back production length, L1The span of body is caving for overlying strata, k is that overlying strata are broken
Swollen coefficient, ε0For the intracorporal voidage of avalanche；ε2To be caving intracorporal voidage；h1The height of avalanche top plate；α be Caved ore body at
The angle of arch；H1For the height of Caved ore body；H0For the height across falling bodies.Overlying strata in each symbolic interpretation refer both to above rock.
In the above method, the height h of the avalanche top plate is utilized1The dead zone back production height and overlying strata differential settlement of foundation
Height H1Relationship in, broken swollen coefficient k by test or experience value；It is caving intracorporal voidage ε2Pass through top plate displacement monitoring
It obtains.
In the above method, the blast hole depth h of the upper centripetal deep hole on the induction control top determined2Are as follows:
The blast hole depth h of induction control top upper centripetal deep hole2More than or equal to overlying strata differential settlement height H1；
The span of 2~3, interval mineral building stope carries out the induction control top of upper centripetal deep hole.
Method of the invention, within the scope of the mobile differential settlement of overlying strata, lower part avalanche top plate forms loose Caved ore body,
Top medium-length hole induction control top (non-natural sinking), according to circumstances the filling of selection supplement changes mining height of equal value, and control overlying mining rock is mobile
The range of rule and differential settlement, (the bauxite lean ore body is flat using the thin orebody mining of Mr. Yu's low-angle dip bauxite for this method
With a thickness of 2.0m~4.0m, inclination angle is less than 20 °, stratiform, like stratiform output；Immediate roof is the viscous of frangible (i.e. weak broken)
Tu Yan；Coal seam and bauxite layer spacing averagely about 41m), so that the range of rock stratum differential settlement is less than 41m, coal will not be destroyed
Layer and bauxite layer spacing, do not influence the integrality of superjacent on the exploitation of lower part bauxite, it is thin to realize multilayer low-angle dip
The target of ore body uplink protective mining.
The embodiment of the present invention is specifically described in further detail combined with specific embodiments below.
1) height of avalanche top plate is determined:
To immediate roof rock mass consolidate ore body, do not stay set shield top ore bed when, implementation cut top avalanche after, top plate Limit Span
Greater than back production strip width, it is insufficient to allow overlying strata unstability inbreak, the height h of avalanche top plate1=2.5H, H are that the dead zone of lower part is returned
Mining height degree；
The ore body of (i.e. weak broken) frangible to immediate roof rock mass will stay if ore bed immediate roof is clay rock and set shield
Ore bed is pushed up, if the broken swollen coefficient of rock stratum is k, as thickness of clay soil >=H/k, the height h of avalanche top plate1It is thick greater than shield top mine
Degree, to push up mine by abundant explosion avalanche, h convenient for powder charge and guarantee shield1=1.5~2.5m；When frangible immediate roof height (i.e.
Thickness of clay soil) < H/k when, the height h of avalanche top plate1Equal to H/k, the general < 5m of lean ore body thickness, then the height of avalanche top plate
Spend h1General < 4m.
2) the induction control top of upper centripetal deep hole:
The blast hole depth h of upper centripetal deep hole2≥H1(H1For the height of overlying strata differential settlement range, H1Determination process such as
1~formula of formula 6).
First establish H1With the intracorporal voidage ε of avalanche0Between relationship (each parameter is shown in Fig. 1 and explanation, formula 1):
The rock mass generation of avalanche top plate is broken swollen, is k according to the broken swollen coefficient of overlying strata, it is known that the avalanche of avalanche top plate range overlying strata
Intracorporal voidage ε0(formula 2), the angle of the Caved ore body arching of lower part is α (formula 3) at this time, and overlying strata are caving the span L of body1
(formula 4)；
Acquire the span L that overlying strata are caving body1Are as follows:
Technique decision of the formation of Caved ore body by avalanche top plate, Caved ore body height H0With the height h of avalanche top plate1And overlying strata
The relationship of broken swollen coefficient k is shown in formula 5.
H0=h1K (formula 5)；
To sum up, overlying strata differential settlement height H is established1With dead zone back production height H, voidage ε2, the broken swollen coefficient k of overlying strata,
Avalanche ceiling height h1Relationship it is as follows:
H1=f (H, ε0,ε2,h1)=f (H, k, ε2,h1) (formula 6)；
Wherein, broken swollen coefficient k can pass through test or experience value, the height h of avalanche top plate1For avalanche top plate conceptual design
One of major parameter, overlying strata are caving intracorporal voidage ε2Then obtained by top plate displacement monitoring.Mining height can be found out as a result,
With the relationship between the avalanche pitch of arch.
3) supplement filling:
Goaf in overlying strata is influenced by avalanche top plate and upper centripetal deep hole induction and compensates voidage, and determining overlying strata are uneven
Even settling height H1When being still greater than the spacing H ' for needing overlying strata (needing overlying rock to be protected) to be protected and working seam,
Need to carry out supplement filling, pack completeness β are as follows:
Method of the invention can control movement and deformation of overburden strata, have at least the following advantages:
It (1) can be on to the uneven moving range of the requirement control overlying mining rock layer of protective mining.
(2) pass through avalanche top plate, medium-length hole induction control top, the range of control overlying mining rock differential settlement, appropriate supplement filling
The mining height of equal value for reducing stope makes the overlying strata uniform settlement away from working seam certain distance while handling goaf.
(3) low without construction early period investment, overall cost, solve the problems, such as that part filling in mine aggregate is insufficient.
(4) after implementing, low-angle dip alternating layers lean ore body can safety economy realization Upward mining.
Embodiment one
The present embodiment provides a kind of control methods of avalanche goaf above rock differential settlement, and this method step is such as
Under:
Immediate roof is firm, does not stay when setting shield top ore bed, such as part phosphate mine, the height h of avalanche top plate1(H is=2.5H
The dead zone back production height of lower part)；The blast hole depth h of upper centripetal deep hole2≥H1, and H1=f (H, ε0,ε2,h1)=f (H, k, ε2,
h1)。
Overlying strata differential settlement height H1When less than the spacing H ' for needing rock stratum and working seam to be protected, do not need to mend
Filling.
Using method of the invention, when immediate roof rock-mass quality is preferable, avalanche top plate and upper centripetal deep hole control top are carried out,
The range of cover rock caving and differential settlement can be effectively controlled, guarantee that working seam is not influenced the non-ore bed in top by lower part.
Embodiment two
The present embodiment provides a kind of control methods of avalanche goaf above rock differential settlement, and this method step is such as
Under:
Immediate roof is firm, does not stay when setting shield top ore bed, such as part phosphate mine, the height h of avalanche top plate1(H is=2.5H
The dead zone back production height of lower part)；Upper centripetal deep hole control top blast hole depth h2≥H1, and H1=f (H, ε0,ε2,h1)=f (H, k, ε2,
h1)。
Overlying strata differential settlement height H1When greater than the spacing H ' for needing rock stratum and working seam to be protected, require supplementation with
Filling, the pack completeness β in goaf are as follows:
Using method of the invention, when immediate roof rock-mass quality is preferable, avalanche top plate, upper centripetal deep hole induction control are carried out
Top and supplement filling, can safety economy control overlying mining rock inbreak and differential settlement range, guarantee top do not dig up mine layer not by
The influence of lower part working seam.
Embodiment three
The present embodiment provides a kind of control methods of avalanche goaf above rock differential settlement, and this method step is such as
Under:
Immediate roof is frangible, if ore bed immediate roof is clay rock, to stay and set shield top ore bed, the broken swollen coefficient k of overlying strata, when viscous
When soil thickness >=H/k, the height of avalanche top plate is greater than shield top mine thickness, sufficiently to be collapsed convenient for powder charge and guarantee shield top mine
It falls, h1=1.5~2.5m；As thickness of clay soil (i.e. the height of avalanche top plate) < H/k, the height of avalanche top plate is equal to H/k,
The general < 5m of lean ore body thickness, then h1General < 4m.
The blast hole depth h of upper centripetal deep hole2≥H1, and H1=f (H, ε0,ε2,h1)=f (H, k, ε2,h1)。
Overlying strata differential settlement height H1When greater than the spacing H ' for needing rock stratum and working seam to be protected, require supplementation with
Filling, the pack completeness β in goaf are as follows:
Using method of the invention, certain bauxite lean ore body, thickness < 5m, immediate roof is clay rock, average thickness
4.07m, need to stay set 0.3m shield top mine, and protect top mine destroy after clay rock be caving immediately；On to cover coal seam average apart from ore bed
41.84m needs to protect coal seam not by bauxite layer mining influence；Rock stratum broken swollen coefficient in mining area is 1.4.Carry out analog simulation
Test simulates the movement distortion rule after rock stratum is caving with ore bed back production unstability, and analyzes and obtain voidage ε2It is 10%
When can be used as the intermediate zone for being caving moving range to integral sinking scales, i.e. voidage ε2Moving influence is caving when being 10%
Range not expand, it is basicly stable, so it is believed that voidage ε when being caving the final form of body2It is 10%.Then overlying strata are uneven
Settling height H1Known to the relationship (formula 6) of dead zone back production height H:
The height 1.5m of the bauxite avalanche top plate as a result,；The blast hole depth of upper centripetal deep hole is H1(back production height H is
Know, formula 8 solves), it is spaced the span of 2~3 stopes；As back production height H > 3.28m, overlying strata differential settlement height >
41.84m influences coal seam and requires supplementation with filling, can be in the hope of according to formula 8.For example, as mining height 4m, then goaf is filled
Filling out rate β is 18%.
Immediate roof rock mass weak broken, as certain coal seam covers lower bauxite be clay rock when, carry out avalanche top plate, on to
Medium-length hole control top and supplement filling, can safety economy control overlying mining rock inbreak and differential settlement coverage, guarantee top
Unminding ore bed, by lower part, working seam is not influenced.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Within the technical scope of the present disclosure, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (9)
1. a kind of method for controlling avalanche goaf above rock differential settlement characterized by comprising
According to immediate roof rock stratum stability, the height h of avalanche top plate is determined1；
Utilize the height h of the avalanche top plate1Establish dead zone back production height H and overlying strata differential settlement height H1Relationship, determine
The blast hole depth h of the upper centripetal deep hole on induction control top2；
The compensation gap that explosion changes goaf in overlying strata is controlled by avalanche top plate and upper centripetal deep hole, control overlying mining rock is uneven
Settling height H1Less than or equal to the spacing H ' for needing rock stratum and working seam to be protected.
2. the method for control avalanche goaf above rock differential settlement according to claim 1, which is characterized in that institute
It states in method, if the overlying strata differential settlement height H after control1It is still greater than the spacing for needing rock stratum and working seam to be protected
H ' then carries out supplement filling according to pack completeness β to goaf and reduces mining height of equal value, until overlying strata differential settlement height H1It is less than
Equal to the spacing H ' for needing rock stratum and working seam to be protected.
3. the method for control avalanche goaf above rock differential settlement according to claim 2, which is characterized in that institute
Stating pack completeness β is (H-H')/H；Wherein, H is dead zone back production height, and H ' is the spacing of rock stratum and working seam.
4. the method for control avalanche goaf above rock differential settlement according to any one of claims 1 to 3, special
Sign is, in the method, according to immediate roof rock stratum stability, determines the height h of avalanche top plate1Are as follows:
To the ore body that immediate roof rock stratum consolidates, does not stay and set shield top ore bed, the height h of avalanche top plate1Equal to 2.5H, wherein H is
Dead zone back production height；
The ore body frangible to immediate roof rock stratum stays and sets shield top ore bed, if the broken swollen coefficient of rock stratum is k, when frangible direct top
When plate height is more than or equal to H/k, the height h of avalanche top plate1Seam thickness is pushed up greater than shield；When frangible immediate roof height is less than
When H/k, the height h of avalanche top plate1Equal to H/k.
5. the method for control avalanche goaf above rock differential settlement according to claim 4, which is characterized in that institute
State the ore body frangible to immediate roof, the height h of avalanche top plate1When pushing up seam thickness greater than shield, the height h of avalanche top plate1It is equal to
1.5~2.5m.
6. the method for control avalanche goaf above rock differential settlement according to claim 1, which is characterized in that institute
It states in method, utilizes the height h of the avalanche top plate1The dead zone back production height H and overlying strata differential settlement height H of foundation1Pass
System are as follows:
H1=f (H, ε0,ε2,h1)=f (H, k, ε2,h1)；
Wherein, H1For overlying strata differential settlement height, H is dead zone back production height, ε0For the voidage of Caved ore body；ε2To be caving body
Interior voidage；K is the broken swollen coefficient of overlying strata；h1For the height of avalanche top plate.
7. the method for control avalanche goaf above rock differential settlement according to claim 6, which is characterized in that institute
State the height h using the avalanche top plate1The dead zone back production height H and overlying strata differential settlement height H of foundation1Relationship in, lead to
It crosses following formula connection solution and calculates overlying strata differential settlement height H1, comprising:
H0=h1·k；
Wherein, H is dead zone back production height, and L is across pitch back production length, L1The span of body is caving for overlying strata, k is the broken swollen system of overlying strata
Number, α are the angle of Caved ore body arching；ε0For the intracorporal voidage of avalanche；ε2To be caving intracorporal voidage；H0For Caved ore body
Highly, H2For the height for being caving body.
8. controlling the method for avalanche goaf above rock differential settlement described according to claim 6 or 7, which is characterized in that
Utilize the height h of the avalanche top plate1The dead zone back production height H and overlying strata differential settlement height H of foundation1Relationship in, it is broken swollen
Coefficient k passes through test or experience value；It is caving intracorporal voidage ε2It is obtained by top plate displacement monitoring.
9. the method for according to claim 1, controlling avalanche goaf above rock differential settlement described in 6 or 7, feature exist
In, in the method, the blast hole depth h of the upper centripetal deep hole on the induction control top determined2Are as follows:
The blast hole depth h of induction control top upper centripetal deep hole2More than or equal to overlying strata differential settlement height H1；
The span of 2~3, interval mineral building stope carries out the induction control top of upper centripetal deep hole.
Priority Applications (1)
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810071A (en) * | 2022-04-14 | 2022-07-29 | 中钢集团马鞍山矿山研究总院股份有限公司 | Structural arrangement suitable for underground mine large-scale goaf caving treatment |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737052A (en) * | 2009-12-28 | 2010-06-16 | 河北邯邢矿冶设计院有限公司 | Sublevel fill-mining method |
| CN103278055A (en) * | 2013-05-31 | 2013-09-04 | 辽宁工程技术大学 | Roof-cutting pressure relief method in hard-roof deep-hole pre-splitting blasting |
| CN103410514A (en) * | 2013-07-31 | 2013-11-27 | 鞍钢集团矿业公司 | Pressure relief and coal extraction method for deeply-compressed ore body |
| CN103791884A (en) * | 2014-01-24 | 2014-05-14 | 安徽理工大学 | Research method of integration rule for coal mining overlying strata and ground surface movement deformation |
| CN105626071A (en) * | 2015-12-30 | 2016-06-01 | 北京矿冶研究总院 | Mining method for gently inclined thin ore body |
| CN105911606A (en) * | 2016-05-16 | 2016-08-31 | 中国矿业大学 | Mining overburden rock motion law in-situ observation drill hole layout method |
| CN106288995A (en) * | 2016-08-22 | 2017-01-04 | 安徽理工大学 | A kind of hole-by-hole initiation explosion treatment Abandoned golfs method |
| CN107066754A (en) * | 2017-04-27 | 2017-08-18 | 河北工程大学 | Without structure rock stratum caving zone dynamic development method for determining height in a kind of directly top |
| CN107100656A (en) * | 2017-07-10 | 2017-08-29 | 中南大学 | A kind of anti-reflection slip casting Composite Bolt method for protecting support of liquid carbon dioxide explosion |
| CN107798184A (en) * | 2017-10-19 | 2018-03-13 | 武汉科技大学 | A kind of determination method of the critical big inbreak span in goaf |
| CN108442930A (en) * | 2018-03-15 | 2018-08-24 | 中南大学 | A kind of Medium Thickness And Medium Slope Angle metal ore mining methods |
-
2018
- 2018-08-30 CN CN201811003812.6A patent/CN109162712B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737052A (en) * | 2009-12-28 | 2010-06-16 | 河北邯邢矿冶设计院有限公司 | Sublevel fill-mining method |
| CN103278055A (en) * | 2013-05-31 | 2013-09-04 | 辽宁工程技术大学 | Roof-cutting pressure relief method in hard-roof deep-hole pre-splitting blasting |
| CN103410514A (en) * | 2013-07-31 | 2013-11-27 | 鞍钢集团矿业公司 | Pressure relief and coal extraction method for deeply-compressed ore body |
| CN103791884A (en) * | 2014-01-24 | 2014-05-14 | 安徽理工大学 | Research method of integration rule for coal mining overlying strata and ground surface movement deformation |
| CN105626071A (en) * | 2015-12-30 | 2016-06-01 | 北京矿冶研究总院 | Mining method for gently inclined thin ore body |
| CN105911606A (en) * | 2016-05-16 | 2016-08-31 | 中国矿业大学 | Mining overburden rock motion law in-situ observation drill hole layout method |
| CN106288995A (en) * | 2016-08-22 | 2017-01-04 | 安徽理工大学 | A kind of hole-by-hole initiation explosion treatment Abandoned golfs method |
| CN107066754A (en) * | 2017-04-27 | 2017-08-18 | 河北工程大学 | Without structure rock stratum caving zone dynamic development method for determining height in a kind of directly top |
| CN107100656A (en) * | 2017-07-10 | 2017-08-29 | 中南大学 | A kind of anti-reflection slip casting Composite Bolt method for protecting support of liquid carbon dioxide explosion |
| CN107798184A (en) * | 2017-10-19 | 2018-03-13 | 武汉科技大学 | A kind of determination method of the critical big inbreak span in goaf |
| CN108442930A (en) * | 2018-03-15 | 2018-08-24 | 中南大学 | A kind of Medium Thickness And Medium Slope Angle metal ore mining methods |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810071A (en) * | 2022-04-14 | 2022-07-29 | 中钢集团马鞍山矿山研究总院股份有限公司 | Structural arrangement suitable for underground mine large-scale goaf caving treatment |
| CN114810071B (en) * | 2022-04-14 | 2023-06-06 | 中钢集团马鞍山矿山研究总院股份有限公司 | Structural arrangement suitable for caving treatment of large goaf of underground mine |
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