CN108104869B - A kind of continuous stoping method of mining by the way of filling of gently inclined medium thick orebody - Google Patents
A kind of continuous stoping method of mining by the way of filling of gently inclined medium thick orebody Download PDFInfo
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- CN108104869B CN108104869B CN201711293513.6A CN201711293513A CN108104869B CN 108104869 B CN108104869 B CN 108104869B CN 201711293513 A CN201711293513 A CN 201711293513A CN 108104869 B CN108104869 B CN 108104869B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21F15/06—Filling-up mechanically
Abstract
The present invention provides a kind of continuous stoping method of mining by the way of filling of gently inclined medium thick orebody, belongs to mining technique field.Gently inclined medium thick orebody is vertically divided segmentation by this method, it is back production unit by ore body division, the ore body across pitch in back production unit is divided into band, and there are studdings along orebody trend for adjacent ribbons, ramp is tunneled in studding, tunnels stope connection roadway respectively along ramp.Band in same back production unit is divided into 6 step stopes and 6 two step stopes, the stope interval back production in identical back production unit first adopts a step stope, and fill to it, after obturation maintenance reaches the defined time, then two step stope of back production.After adjacent several back production unit ore body full extractions finish and stope filled, then back production is carried out to studding, top safety pillar and the bottom safety pillar between back production unit.Mechanization degree of the present invention is high, production capacity is big, ore recovery rate is big, poor loss rate is low and safety is good.
Description
Technical field
The present invention relates to mining technique fields, particularly relate to a kind of continuous stoping mining with stowing of gently inclined medium thick orebody
Method.
Background technique
With gradually using up for mineral resources, mine is gradually developed to deep mining direction, and deep mining is faced with Gao Jing
The conditions such as depth, high temperature and high pressure, cost of winning can greatly increase.In order to improve the mining level in mine, more and more mines
Mountain starts to develop towards intelligence mining direction, it is desirable that ore body carries out scale high-efficiency mining, to reduce cost of winning；And delays and incline
Oblique middle thickness orebody is therefore uneasily mining orebody need to seek a kind of continuous stoping method of mining by the way of filling of gently inclined medium thick orebody, to realize
Safety, economy and the high-efficiency mining in mine.
The recovery method of a large amount of gently inclined medium thick orebodies mainly uses stratified filling method, sublevel open stoping afterwards filling method and room
Column method etc..When exploiting using stratified filling method to gently inclined medium thick orebody, rock drilling, explosion and ore removal can not be carried out simultaneously,
Operation battle line is long, production capacity is low, and utilization rate of equipment and installations is low.The advantage that sublevel open stoping afterwards filling method has production capacity big,
But the productive limit of ore body is difficult to control, and poor loss rate is high, and need to tunnel a large amount of ore removal route, adopts that cut project amount larger.Room
Column method is more traditional mining methods, and when being exploited using room-and-pillar method to gently inclined medium thick orebody, production capacity is low, is needed
It is installed with a large amount of irretrievable ore pillar, ore loss ratio is higher, and top plate easily collapses, not to the safety in production in mine
Benefit.
In order to improve the production efficiency of gently inclined medium thick orebody, improves downhole production safe working environment, invented one kind
The continuous stoping method of mining by the way of filling of gently inclined medium thick orebody, production capacity is big, mechanization degree is high, ore recovery rate is high, poor
Loss rate is low and safety is good, it can be achieved that gently inclined medium thick orebody continuous stoping and filling.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of continuous stoping methods of mining by the way of filling of gently inclined medium thick orebody, should
The gently inclined medium thick orebody that method is 20~30 ° for inclination angle, with production capacity is big, mechanization degree is high, poor loss rate is low, raw
Produce the high-efficient and good feature of safety.
This method specifically comprises the following steps:
(1) quasi- and cutting is adopted:
Gently inclined medium thick orebody is divided into back production unit, the ore body across pitch in back production unit is divided into band, edge
Be installed with studding between two adjacent bands on orebody trend, wherein in same back production unit band be divided into a step stope and
Two step stopes, every 12 stopes tunnel ramp bend and ramp straight way, along oblique as a back production unit in studding
Ramp bend and ramp straight way tunnel stope connection roadway respectively, stope connection roadway respectively with a step stope and two step stopes
Carry out connected, and stope connection roadway is separately connected the lower leaf of the higher slice stope and band on the right side of studding of studding left-hand bar band and adopts
?；In ramp racetrack portion driving ramp and drop shaft connection roadway, drop shaft is tunneled among spiral ramp bend, under drop shaft
Arteries and veins and drop shaft connection roadway are worn in portion's connection, are worn arteries and veins with drop shaft connection roadway and are connected to the tunnel Chuan Mai, the tunnel Chuan Mai and level haulage lane phase again
Connection；It is stayed respectively in the top and bottom of back production unit and sets top safety pillar and bottom safety pillar；
(2) back production and filling:
A step stope and two step stopes in same back production unit from bottom to top carry out interval back production respectively, to back production
An equal back production of step stope in unit, which finishes, to be filled, and after obturation final set, reaches the time of supporting oneself, then successively to back production
Two step stopes in unit carry out back production, when in same back production unit a step stope and the two equal back production of step stope it is complete
Finish, the studding after obturation reaches final set, among the adjacent back production unit of recycling；
The back production of each stope is divided into two layerings and carries out, and higher slice is to cut top layer, ramp bend and ramp straight way
Be separately connected higher slice stope and lower leaf stope, carry out cutting top cutting top layer since higher slice, using automation scraper into
Row ore removal, ore are transported from stope connection roadway to ramp bend or ramp straight way, then straight through ramp bend or ramp
Road transports stope box to ramp and drop shaft connection roadway, then carries out anchor pole and cable bolting to Stope roof；Higher slice
After back production, cutting groove is drawn with deep hole on the top of band, after cutting groove is formed, in the middle depth that higher slice stope chisel is downward
Then hole carries out powder charge and explosion to medium-length hole, by stope connection roadway, ramp bend and ramp straight way, ramp with
For drop shaft connection roadway by Ore Transportation to stope box, ore transfers to the electric locomotive on the tunnel Chuan Mai by drop shaft, then passes through
Section transportation roadway is transported to mining area main chute；
When the stope complete extraction of adjacent several back production units finishes, it is filled, is carried out again after obturation final set
Rib pillar stoping finally recycles top safety pillar and bottom safety pillar when a certain segmentation stope complete extraction finishes.
Wherein, studding is recycled using room-and-pillar method, right at the end of last back production first by staying the column supporting dead zone that sets up an office
Dead zone carries out unified closing, then the paste body filling body for being 1:20~1:24 with cement-sand ratio is filled；To top safety pillar
When being recycled with bottom safety pillar, brush is big in the direction of the width first is segmented tunnel, then to be segmented tunnel as rock drilling
Lane, construction is upper to fan shaped medium length hole, and when roof stability is bad, interval construction anchor cable, retrusive carries out explosion, and segmentation masonry is filled
Barricade is filled out to be filled.
The width of one step stope and two step stopes be 8~12m, length be 100~160m, studding width be 30~
50m。
Ramp bend and ramp straight way are helix shape, and the gradient of ramp bend and ramp straight way is 10
~20%, the turning radius of ramp bend is 15m.
The back production simultaneously of different back production units, back production and the filling of same back production unit stope are worked continuously simultaneously.
Stope connection roadway, ramp and drop shaft connection roadway and ramp bend, the width of ramp straight way and height are 4.5m
Basket handle arch tunnel.
Each stope box services 1 back production unit.
The advantageous effects of the above technical solutions of the present invention are as follows:
Gently inclined medium thick orebody is divided into back production unit by the present invention, and back production unit is arranged along orebody strike, each to return
It adopts unit and is further subdivided into band, an adjacent interband is installed with studding along orebody trend, is divided into band in back production unit
One step stope and two step stopes；Band in the same back production unit need to carry out interval back production, can be simultaneously to multiple one
Step stope carries out continuous stoping；Can band to different back production units carry out back production simultaneously, and back production and filling can be simultaneously
It carries out, does not interfere with each other, Contining ore removal or filling can be carried out, mechanization degree is high, and production capacity is big.
Stope is divided into two layerings up and down by the present invention, and higher slice is tunneled using large-scale rock drilling equipment, and uses anchor
The forms such as bar and anchor cable carry out supporting to top plate, and lower leaf uses medium-length hole blasting, and large-scale scraper ore removal is, it can be achieved that back production list
The mechanization continuous stoping of ore body in member, production capacity is big, and production operation safety is good.
Stope in back production unit is divided into a step stope and two step stopes by the present invention, after stope mining, using cream
Body filling technique fills goaf, and the cement content of a step stope filling body is relatively high, two step stope fillings
The cement content of body is relatively low, and Tight filling effect is good, and filling cost is low.
The present invention is segmented the major part such as tunnel, exploiting field ramp, stope connection roadway and is all disposed in ore body, and scraper is being adopted
Ore removal in, does not need to tunnel a series of ore removal route, adopts that cut project amount few.
The present invention carries out supporting to higher slice top plate, and Stope roof is relatively stable, and stope productive limit is controlled, back production list
After first ore back production, then studding, top safety pillar and bottom safety pillar are recycled, poor loss rate is low and ore
High stoping rate.
Therefore, the present invention has that mechanization degree is high, production capacity is big, adopts and cuts that project amount is few, ore recovery rate is high, poor damage
Rate is low and the good feature of safety, is 20~30 °, opening with a thickness of 10~16m gently inclined medium thick orebody suitable for the slanting angle of ore body
It adopts.
Detailed description of the invention
Fig. 1 is that the continuous stoping method of mining by the way of filling of gently inclined medium thick orebody of the invention is illustrated applied to a certain back production unit
Figure；
Fig. 2 be Fig. 1 in A-A to diagrammatic cross-section；
Fig. 3 is the diagrammatic cross-section of B-B direction in Fig. 1.
Wherein: 1-segmentation tunnel；2-stope connection roadways；3-ramp bends；4-ramps and drop shaft connection roadway；
5-drop shafts；6-studdings；7-ramp straight ways；8-top safety pillars；9-bottom safety pillars；10-two step stopes；
11-one step stope；12-higher slice stopes；13-lower leaf stopes；14-anchor poles and cable bolting；15-medium-length holes；
16-the tunnels Chuan Mai；17-wear arteries and veins and drop shaft connection roadway；18-level haulage lanes；19-Caved orebodies.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
The present invention provides a kind of continuous stoping method of mining by the way of filling of gently inclined medium thick orebody.
As shown in Figure 1, this method carries out as follows:
(1) quasi- and cutting is adopted:
Gently inclined medium thick orebody is divided into back production unit, the ore body across pitch in back production unit is divided into band, edge
It is installed with studding 6 between two adjacent bands on orebody trend, wherein band is divided into a step stope in same back production unit
11 and two step stopes 10, every 12 stopes ramp bend 3 and ramp are tunneled in studding 6 as a back production unit
Straight way 7 tunnels stope connection roadway 2 along ramp bend 3 and ramp straight way 7 respectively, and stope connection roadway 2 is adopted with a step respectively
Field 11 is connected with two step stopes 10, and stope connection roadway 2 is separately connected 12 He of higher slice stope of 6 left-hand bar band of studding
The lower leaf stope 13 of 6 right side band of studding；In 3 part of ramp bend, driving ramp and drop shaft connection roadway 4, oblique in spiral
Drop shaft 5 is tunneled among ramp bend 3, the connection of 5 lower part of drop shaft wears arteries and veins and drop shaft connection roadway 17, wears arteries and veins and connect again with drop shaft connection roadway 17
The logical tunnel Chuan Mai 16, the tunnel Chuan Mai 16 is connected with level haulage lane 18；It is stayed respectively in the top and bottom of back production unit and sets top
Portion's safety pillar 8 and bottom safety pillar 9；
(2) back production and filling:
A step stope 11 and two step stopes 10 in same back production unit from bottom to top carry out interval back production respectively, to
The equal back production of a step stope 11 in back production unit, which finishes, to be filled, and after obturation final set, reaches the time of supporting oneself, then successively
Back production is carried out to two step stopes 10 in back production unit, when the step stope 11 and two step stopes in same back production unit
10 equal back production finish, the studding 6 after obturation reaches final set, among the adjacent back production unit of recycling；
The back production of each stope is divided into two layerings and carries out, and higher slice is to cut top layer, ramp bend 3 and ramp straight way
7 are separately connected higher slice stope 12 and lower leaf stope 13, carry out cutting top cutting top layer since higher slice, using automation scraper
Machine carries out ore removal, and ore transports from stope connection roadway 2 to ramp bend 3 or ramp straight way 7, then through ramp bend 3 or
Ramp straight way 7 transports stope box 5 to ramp and drop shaft connection roadway 4, then carries out anchor pole and anchor cable to Stope roof
Supporting 14；After higher slice back production, cutting groove is drawn with deep hole on the top of band, after cutting groove is formed, in higher slice stope
The downward medium-length hole 15 of 12 chisels, then carries out powder charge and explosion to medium-length hole 15, passes through stope connection roadway 2,3 and of ramp bend
Ore Transportation to stope box 5, ore are transferred to Chuan Mai by drop shaft 5 by ramp straight way 7, ramp and drop shaft connection roadway 4
Electric locomotive on tunnel 16, then transported by level haulage lane 18 to mining area main chute；
When the stope complete extraction of adjacent several back production units finishes, it is filled, is carried out again after obturation final set
6 back production of studding finally returns top safety pillar 8 and bottom safety pillar 9 when a certain segmentation stope complete extraction finishes
It receives.
Embodiment
For Chambishi copper mine southeast ore body in stratiform like stratiform output, the inclination angle of ore body is 20~30 °, with a thickness of 10~16m,
Ore body across pitch length is 755~890m, belongs to thick uneasily mining orebody in low-angle dip, disk and lower wall country rock are quartz on the mining area
Rock, stability is preferable, and orebody mining is influenced smaller by underground water, and engineering geological condition belongs to simple and Midpoint type.
It adopts quasi- with cutting: as shown in Figure 1,2 and 3, gently inclined medium thick orebody being divided into back production unit, to same back production list
Ore body across pitch in member is divided into band, i.e., band is divided into a step stope 11 and two step stopes 10 in back production unit,
Every 12 stopes are installed with studding 6 among each back production unit, are disposed with ramp on studding 6 as a back production unit
Arteries and veins and drop shaft connection roadway 17 are worn in bend 3, ramp straight way 7 and stope box 5, the connection of 5 lower part of drop shaft, then with 16 phase of the tunnel Chuan Mai
Even, the tunnel Chuan Mai 16 is connected with level haulage lane 18；Ramp straight way 7 and ramp bend 3 are connected with stope respectively；It is being segmented
The top and bottom in lane are installed with top safety pillar 8 and bottom safety pillar 9 respectively.
Back production and filling: as illustrated in fig. 1 and 2, the stope in same back production unit is divided into a step stope 11 and two steps
Stope 10 first exploits a step stope 11, and multiple step stopes 11 in a back production unit can carry out back production simultaneously, with
A step stope 11 is filled and (filled using high-intensitive cement-sand ratio filling material to it) afterwards, to a step stope 11
After filling and reach final set, can support oneself, then successively two step stopes 10 in back production back production unit, then two steps are adopted
Field 10 is filled and (is filled using low intensive cement-sand ratio filling material to it)；Stope in adjacent several back production units is equal
Back production and filling finish, then recycle to studding 6, bottom safety pillar 9 and the top safety pillar 8 in back production unit.
As shown in Figures 2 and 3, the back production of each stope is divided into two layerings, respectively higher slice stope 12 and lower point up and down
Layer stope 13, first back production higher slice stope 12, then back production lower leaf stope 13, stope connection roadway 2 respectively with higher slice stope 12
It is connected with lower leaf stope 13, higher slice stope 12 is carried out to cut top, the mine of Caved orebody 19 since the stope connection roadway 2
Stone is transported through ramp and drop shaft connection roadway 4 to stope box 5 from stope connection roadway 2, ramp straight way 7 and ramp bend 3,
And supporting is carried out to top plate using forms such as anchor pole and anchor cables.Then cutting groove, cutting groove are drawn on the top of lower leaf stope 13
After formation, using medium-length hole trolley to medium-length hole 15 under higher slice chisel, point row carries out powder charge and explosion to medium-length hole, by adopting
Field connection roadway 2, ramp straight way 7 and ramp bend 3 are transported through ramp and drop shaft connection roadway 4 to stope box 5.
When the stope complete extraction of adjacent several back production units finishes, and it is filled, after obturation final set again into
6 back production of column in the ranks, when a certain segmentation stope complete extraction finishes, finally to top safety pillar 8 and the progress of bottom safety pillar 9
Recycling.Studding 6 mainly recycles it using room-and-pillar method, first by staying the column supporting dead zone that sets up an office, at the end of last back production
Unified closing is carried out to it, then it is filled with the paste body filling body of low cement-sand ratio；To top safety pillar 8 and bottom
When safety pillar 9 is recycled, the big segmentation tunnel 1 of brush in the direction of the width first, then to be segmented tunnel 1 as rock drilling lane,
To fan shaped medium length hole in construction, when roof stability is bad, interval construction anchor cable, retrusive carries out explosion, and segmentation builds filling
Barricade is filled.
Wherein, the width of a step stope 11 and two step stopes 10 is 8~12m, and length is 100~160m, studding
Width is 30~50m.
Between back production unit and back production unit can continuous stoping simultaneously, back production and the filling of same back production unit stope can be same
Shi Jinhang works continuously.
The back production of each stope is divided into two layerings and carries out, and first carries out cutting top in higher slice, is propped up using anchor pole and anchor cable etc.
Shield form carries out shield top to top plate, then carries out back production to lower leaf mine to medium-length hole using lower.
It is 20~30 ° that this method, which is suitable for the slanting angle of ore body, and orebody thickness is opening for the gently inclined medium thick orebody of 10~16m
It adopts.
The present invention is 20~30 ° for the slanting angle of ore body, and orebody thickness is the gently inclined medium thick orebody of 10~16m, it is difficult to be adopted
Continuous high-efficient exploitation is carried out with mechanization, belongs to uneasily mining orebody, by being back production unit, ore body in back production unit by ore body division
It is divided into band, a step stope or two step stopes can carry out continuous stoping, different back production lists simultaneously in same back production unit
Stope in member can also carry out continuous stoping and filling simultaneously, adopt that cut tunnel few, carry out supporting to higher slice Stope roof, and lower point
Layer carries out explosion using medium-length hole, carries out Contining ore removal, studding, top safety pillar and bottom security personnel's mine using large-scale scraper
Column may be recovered, have mechanization degree is high, production capacity is big, adopt cut that project amount is few, ore recovery rate is high, poor loss rate is low and
The good feature of safety.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of continuous stoping method of mining by the way of filling of gently inclined medium thick orebody, it is characterised in that: comprise the following steps that
(1) quasi- and cutting is adopted:
Gently inclined medium thick orebody is divided into back production unit, the ore body across pitch in back production unit is divided into band, along ore body
It walks and is installed with studding (6) between two adjacent upwards bands, wherein band is divided into a step stope in same back production unit
(11) and two step stopes (10), every 12 stopes tunnel ramp bend (3) in studding (6) as a back production unit
With ramp straight way (7), stope connection roadway (2), stope contact are tunneled respectively along ramp bend (3) and ramp straight way (7)
Lane (2) is connected with a step stope (11) and two step stopes (10) respectively, and stope connection roadway (2) is separately connected studding
(6) the lower leaf stope (13) of the higher slice stope (12) of left-hand bar band and studding (6) right side band；In ramp bend (3)
Part driving ramp and drop shaft connection roadway (4), tunnel drop shaft (5) among spiral ramp bend (3), drop shaft (5) lower part
Arteries and veins and drop shaft connection roadway (17) are worn in connection, are worn arteries and veins and are connected to again the tunnel Chuan Mai (16) with drop shaft connection roadway (17), the tunnel Chuan Mai (16)
It is connected with level haulage lane (18)；It is stayed respectively in the top and bottom of back production unit and sets top safety pillar (8) and bottom guarantor
Pacify ore pillar (9)；
(2) back production and filling:
A step stope (11) and two step stopes (10) in same back production unit from bottom to top carry out interval back production respectively, to
The back production of a step stope (11) in back production unit, which finishes, to be filled, and after obturation final set, reaches the time of supporting oneself, then according to
The secondary two step stopes (10) in back production unit carry out back production, when the step stope (11) and two steps in same back production unit
Rapid stope (10) back production finishes, the studding (6) after obturation reaches final set, among the adjacent back production unit of recycling；
The back production of each stope is divided into two layerings and carries out, and higher slice is to cut top layer, ramp bend (3) and ramp straight way
(7) it is separately connected higher slice stope (12) and lower leaf stope (13), carries out cutting top cutting top layer since higher slice, using automatic
Change scraper and carry out ore removal, ore is transported from stope connection roadway (2) to ramp bend (3) or ramp straight way (7), then through oblique
Ramp bend (3) or ramp straight way (7) transport stope box (5) to ramp and drop shaft connection roadway (4), then to stope
Top plate carries out anchor pole and cable bolting (14)；After higher slice back production, cutting groove, cutting groove are drawn with deep hole on the top of band
After formation, downward medium-length hole (15) is dug in higher slice stope (12), and powder charge and explosion then are carried out to medium-length hole (15), passed through
Stope connection roadway (2), ramp bend (3) and ramp straight way (7), ramp and drop shaft connection roadway (4) arrive Ore Transportation
Stope box (5), ore transfers to the electric locomotive on the tunnel Chuan Mai (16) by drop shaft (5), then passes through level haulage lane (18)
It transports to mining area main chute；
When the stope complete extraction of adjacent several back production units finishes, it is filled, carries out studding after obturation final set again
(6) back production, when a certain segmentation stope complete extraction finishes, finally to top safety pillar (8) and bottom safety pillar (9) progress
Recycling.
2. the continuous stoping method of mining by the way of filling of gently inclined medium thick orebody according to claim 1, it is characterised in that: between described
Column (6) is recycled using room-and-pillar method, first by staying the column supporting dead zone that sets up an office, carries out unification to dead zone at the end of last back production
Closing, then the paste body filling body for being 1:20~1:24 with cement-sand ratio are filled；To top safety pillar (8) and bottom security personnel
When ore pillar (9) is recycled, brush is big in the direction of the width first is segmented tunnel (1), then to be segmented tunnel (1) as rock drilling
Lane, construction is upper to fan shaped medium length hole, and when roof stability is bad, interval construction anchor cable, retrusive carries out explosion, and segmentation masonry is filled
Barricade is filled out to be filled.
3. the continuous stoping method of mining by the way of filling of gently inclined medium thick orebody according to claim 1, it is characterised in that: described one
The width of step stope (11) and two step stopes (10) be 8~12m, length be 100~160m, studding (6) width be 30~
50m。
4. the continuous stoping method of mining by the way of filling of gently inclined medium thick orebody according to claim 1, it is characterised in that: described oblique
Ramp bend (3) and ramp straight way (7) are helix shape, and the gradient of ramp bend (3) and ramp straight way (7) is
10~20%, the turning radius of ramp bend (3) is 15m.
5. the continuous stoping method of mining by the way of filling of gently inclined medium thick orebody according to claim 1, it is characterised in that: difference is returned
Unit back production simultaneously is adopted, back production and the filling of same back production unit stope are worked continuously simultaneously.
6. the continuous stoping method of mining by the way of filling of gently inclined medium thick orebody according to claim 1, it is characterised in that: described
The width and Gao Junwei of stope connection roadway (2), ramp and drop shaft connection roadway (4) and ramp bend (3), ramp straight way (7)
The basket handle arch tunnel of 4.5m.
7. the continuous stoping method of mining by the way of filling of gently inclined medium thick orebody according to claim 1, it is characterised in that: each adopt
Area's drop shaft (5) services 1 back production unit.
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| CN109083644B (en) * | 2018-08-16 | 2019-08-02 | 中南大学 | A kind of safe and efficient mining methods of gently inclined medium thick orebody |
| CN109339783B (en) * | 2018-11-15 | 2020-04-07 | 中国恩菲工程技术有限公司 | Approach open stope subsequent filling mining method for gently inclined medium-thickness ore body |
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| CN110259451B (en) * | 2019-06-20 | 2020-11-27 | 中南大学 | Pre-control roof efficient mining method for gently inclined medium-thickness ore body |
| CN110656938B (en) * | 2019-08-19 | 2021-05-18 | 西北矿冶研究院 | Subsequent filling mining method suitable for gently inclined medium-thickness broken ore body |
| CN110552701B (en) * | 2019-10-10 | 2022-02-01 | 锡林郭勒盟山金阿尔哈达矿业有限公司 | Partitioned combined filling mining method |
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| CN111720120A (en) * | 2020-07-31 | 2020-09-29 | 王有奇 | Method for achieving pre-support by adopting two-step mining stope based on layered filling method |
| CN112228072B (en) * | 2020-09-29 | 2022-04-15 | 华南理工大学 | Underground supporting system for loess stud and reserved thin-strip ore pillar and construction method |
| CN113266354B (en) * | 2021-06-09 | 2022-09-06 | 山东黄金矿业科技有限公司深井开采实验室分公司 | Two-step stoping upward filling mining method along strike layered route |
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