CN106593448B - The recovery method of open coal mine - Google Patents

The recovery method of open coal mine Download PDF

Info

Publication number
CN106593448B
CN106593448B CN201611183026.XA CN201611183026A CN106593448B CN 106593448 B CN106593448 B CN 106593448B CN 201611183026 A CN201611183026 A CN 201611183026A CN 106593448 B CN106593448 B CN 106593448B
Authority
CN
China
Prior art keywords
mining area
recovery
coal mine
working pit
pit edge
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.)
Active
Application number
CN201611183026.XA
Other languages
Chinese (zh)
Other versions
CN106593448A (en
Inventor
马力
张宝卫
马占
马占一
周永利
罗怀廷
肖双双
彭洪阁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China University of Mining and Technology CUMT
China Shenhua Energy Co Ltd
Xian University of Science and Technology
Shenhua Group Zhungeer Energy Co Ltd
Original Assignee
China University of Mining and Technology CUMT
China Shenhua Energy Co Ltd
Xian University of Science and Technology
Shenhua Group Zhungeer Energy Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China University of Mining and Technology CUMT, China Shenhua Energy Co Ltd, Xian University of Science and Technology, Shenhua Group Zhungeer Energy Co Ltd filed Critical China University of Mining and Technology CUMT
Priority to CN201611183026.XA priority Critical patent/CN106593448B/en
Publication of CN106593448A publication Critical patent/CN106593448A/en
Application granted granted Critical
Publication of CN106593448B publication Critical patent/CN106593448B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C47/00Machines for obtaining or the removal of materials in open-pit mines

Abstract

The invention discloses a kind of recovery methods of open coal mine, comprising: (1) the follow-up distance extended between In-pit dumping area and mining area forms reserved space;(2) it is promoted in mining area and forms the first working pit edge and two relatively parallel first end sides, first working pit edge includes step, when the distance between first end side is greater than the horizontal length of the ramp of step, first working pit edge arranges that mining area promotes to the direction of moving towards in mineral deposit along the tendency direction in mineral deposit;(3) to mining area of lower layer deepening, the second working pit edge and two relatively parallel second end sides are formed in mining area and reserved space, second working pit edge includes step, when the distance between first end side is less than the horizontal length of the ramp of step, second working pit edge arranges that mining area promotes to the tendency direction in mineral deposit along the direction of moving towards in mineral deposit.The present invention provides a kind of recovery method of open coal mine, in the inclination long narrow open coal mine of multiple seam, fast implements In-pit dumping, and easily choosing is adopted, and reduces coal petrography severity of mixing up.

Description

The recovery method of open coal mine
Technical field
The present invention relates to Opencut coal mine mining technical fields, more particularly, to a kind of recovery method of open coal mine.
Background technique
Under the influence of by factors such as open coal mine storage of mineral deposits feature, production capacity and mine workline lengths, selection Suitable active line arrangement is of great significance to mining production.The active line arrangement of surface mining includes moving towards cloth It sets, be inclined to arrangement, moving towards that subregion is vertical to be adopted, be inclined to that subregion is horizontal to be adopted, foundation pit arrangement and fan-shaped arrange.Wherein, most typically and outdoor Most widely used in coal mine is to move towards to arrange and be inclined to arrangement.
It moves towards arrangement and refers to that active line moves towards arrangement along mineral deposit and promotes to tendency, advantage is that workline length is big, is convenient for Equipment gives full play to efficiency, reduces coal petrography severity of mixing up and is easy to select and adopt, still, too long active line will increase in Automobile Transportation The distance of casting reduces the speed of In-pit dumping.Tendency arrangement refers to active line along the tendency arrangement in mineral deposit and to moving towards to promote, and fits For high-dipping ore block, advantage is that facilitate Automobile Transportation and stripping-to-ore ratio to change small, is also convenient for carrying out In-pit dumping still working Serious coal petrography mixed questions can be generated by helping, and cause ore dilution loss.
For tilting the long narrow open coal mine of multiple seam, in exploitation, it can be inclined to arrangement active line, so as to quickly real Existing In-pit dumping.But gradually shorten as active line develops to deep, developing arrangement of conveying system and coal seam choosing are adopted extremely It is unfavorable.
It is, therefore, desirable to provide a kind of recovery method of the suitable inclination long narrow open coal mine of multiple seam, to solve the above problems.
Summary of the invention
In view of this, solving the work of coal mine bottom it is an object of the invention to propose a kind of recovery method of open coal mine The problem that line is short and arrangement of conveying system space is small, so that the inclination long narrow open coal mine of multiple seam can be quick in recovery process It realizes In-pit dumping, to reduce transportation cost, is easy to select and adopt, reduce coal petrography severity of mixing up, guarantee the safe and efficient production in mine.
Based on a kind of above-mentioned purpose recovery method of open coal mine provided by the invention, comprising:
(1) the follow-up distance extended between the In-pit dumping area and the mining area forms reserved space;
(2) it is promoted in the mining area and forms the first working pit edge and two relatively parallel first end sides, described first Working pit edge includes step, when the distance between first end side is greater than the horizontal length of the ramp of the step, described the One working pit edge arranges that the mining area promotes to the direction of moving towards in the mineral deposit along the tendency direction in mineral deposit;
(3) to mining area's deepening described in lower layer, formed in the mining area and the reserved space the second working pit edge and Two relatively parallel second end sides, second working pit edge includes the step, when the distance between first end side is small In the horizontal length of the ramp of the step, second working pit edge is arranged along the direction of moving towards in the mineral deposit, described Mining area promotes to the tendency direction in the mineral deposit.
Preferably, the method for extending follow-up distance includes: to lag the internal dumping to the stope with progress.
Preferably, in step (2) and/or step (3) further include: the horizontal length of the ramp is that the step is high 8~12.5 times of degree.
Preferably, in step (3) further include: the direction of propulsion of first working pit edge is pushed away with second working pit edge It is mutually perpendicular into direction.
Preferably, before step (3) further include: to mining area's deepening described in lower layer, repeat step (2), until described the The distance between one end side is less than the horizontal length of the ramp of the step, enters step (3).
Preferably, the recovery method further includes step (4), to mining area's deepening described in lower layer, is repeated step (3), directly To being advanced into boundary.
Furthermore it is preferred that the recovery method further include: when the distance between first end side is equal to the step The horizontal length of ramp can enter step (2) or step (3).
From the above it can be seen that the recovery method of open coal mine provided by the invention has compared with prior art Following advantages: in mining area's use tendency arrangement exploitation that upper layer is relatively open, along moving towards to promote, so as to realize Quick casting reduces transportation cost;In the mining area that lower layer is relatively narrow, active line can be increased by the way that reserved space is arranged Length, while arrangement exploitation is moved towards in use, is promoted along tendency, it is short to be able to solve coal mine bottom active line, developing transport The problem of system difficult arrangement, while choosing can also be improved and adopt ability, coal petrography severity of mixing up is reduced, is arranged and is moved towards by tendency Arrangement combinations exploitation, can be further ensured that the safe and efficient production in mine.
Detailed description of the invention
By the way that embodiment is described with reference to the accompanying drawing, features described above of the invention and technological merit will become More understands and be readily appreciated that.
Fig. 1 is the recovery process schematic diagram of the recovery method of the open coal mine used in the specific embodiment of the invention.
Fig. 2 is the flow diagram of the recovery method of the open coal mine used in the specific embodiment of the invention.
Wherein appended drawing reference:
11: the first working pit edges;12: step;13: first end side;
21: the second working pit edges;22: the second non working slopes;23: second end side.
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.Wherein identical components are presented with like reference characters.It needs to illustrate It is that word "front", "rear" used in the following description, "left", "right", "up" and "down" refer to the direction in attached drawing.It uses Word "inner" and "outside" refer respectively to the direction towards or away from geometric center of specific component.Filled black arrow represents work It is horizontal to adopt direction of propulsion when making line tendency arrangement, when white filling arrow represents work item and move towards arrangement, indulges and adopt direction of propulsion, arrow Head represents internal dumping to the follow-up direction of stope.Tendency and trend are relatively and for mineral deposit.
Fig. 1 is the recovery process schematic diagram of the recovery method of the open coal mine used in the specific embodiment of the invention.Such as Fig. 1 Shown, the recovery method of open coal mine includes:
(1) the follow-up distance extended between In-pit dumping area and mining area forms reserved space.
(2) it is promoted in mining area and forms the first working pit edge 11 first end side 13 relatively parallel with two, the first work Side 11 includes step 12, when the distance between first end side 13 is greater than the horizontal length of the ramp of step 12, the first working pit edge 11 arrange along the tendency direction in mineral deposit, and mining area promotes to the direction of moving towards in mineral deposit.
(3) extend to mining area of lower layer, form the second working pit edge 21 in mining area and reserved space and two relatively flat Capable second end side 23, the second working pit edge 21 include step 12, when the distance between first end side 13 is less than the slope of step 12 The horizontal length in road, the second working pit edge 21 arrange that mining area promotes to the tendency direction in mineral deposit along the direction of moving towards in mineral deposit.
The ramp described in step (2) and (3) refers to transport ore-rock, in this step and between stepping to a new level The transport channel with certain slope built.
In the mining area that upper layer is relatively open, the first working pit edge 11 is arranged along the tendency direction in mineral deposit, and mining area is to mineral deposit Move towards direction propulsion, so as to realize quick casting, reduce transportation cost;In the mining area that lower layer is relatively narrow, pass through Reserved space, which is arranged, can increase the length of the second working pit edge 21, and the second working pit edge 21 is arranged along the direction of moving towards in mineral deposit, exploitation Area is promoted to the tendency direction in mineral deposit, is adopted ability to improve choosing, is reduced coal petrography and mix, arrange and move towards arrangement group by tendency It runs jointly and adopts, can be further ensured that the safe and efficient production in mine.
In the present embodiment, it is exploited from earth's surface+0 to underground -6h, wherein the absolute altitude of each layer of mining area is h.+ 0 Into the mining area of-h, the first working pit edge 11 is arranged along the tendency direction in mineral deposit, and mining area promotes to the direction of moving towards in mineral deposit, such as Shown in filled black arrow on+0 to-h the first working pit edge 11;- h to the mining area of -2h, -2h to -3h mining area with And in the mining area of -3h to -4h, the first working pit edge 11 arranges that mining area is to the trend in mineral deposit along the tendency direction in mineral deposit Direction promote, as-h to -2h, -2h to -3h, -3h to -4h the first working pit edge 11 on filled black arrow shown in;With opening Exploiting field is shifted downwards, and the exploitation space of coal mine bottom is smaller and smaller, such as mining area of -4h to -5h and the exploitation from -5h to -6h Area, the distance between first end side 13 are less than the horizontal length of the ramp of step 12, and the length of the first working pit edge 11 can not expire Foot is opened up and the requirement of transport.Because extending the follow-up distance of internal dumping, as the arrow below stope shows internal dumping Follow-up direction, reserved space can the opposite length for extending the second working pit edge 21, so, thus it is possible to vary the exploitation side in coal seam To meet exploitation requirement.Mining area in -4h to -5h and mining area from -5h to -6h, the second working pit edge 21 is along mineral deposit Move towards direction arrangement, mining area to the tendency direction in mineral deposit promote, as on the second working pit edge 21 white fill arrow shown in.
Extend the follow-up distance between the internal dumping in In-pit dumping area and the stope of mining area, to increase reserved space, It, can be in reserved space with respect to the length for extending the second working pit edge 21, to change the exploitation in coal seam when coal mine bottom is exploited Direction is changed by tendency arrangement active line and moves towards arrangement active line, in order to the arrangement of transportation system, reduces exploitation difficulty, Improve production efficiency.
Preferably, the method for extending follow-up distance includes: to lag internal dumping to stope with progress, is followed up by lag Degree can extend the distance between internal dumping and stope, increase reserved space.
The horizontal length of ramp is longer, and the area occupied is bigger, and the gradient of step 12 is smaller, and the safety of transport is got over It is high.The length of ramp should be selected according to factors such as area occupied and safeties.Preferably, in step (2) and/or step (3) in further include: the horizontal length of ramp is 8~12.5 times of 12 height of step.
Preferably, in step (3) further include: the propulsion side of the direction of propulsion of the first working pit edge 11 and the second working pit edge 21 To being mutually perpendicular to.First working pit edge 11 tendency arrangement active line (also referred to as horizontal to adopt active line), the second working pit edge 21 move towards arrangement work Make line (also referred to as vertical adopt active line), the active line of the direction of propulsion of the active line of the first working pit edge 11 perpendicular to the second working pit edge 21 Direction of propulsion, i.e., the horizontal direction of propulsion for adopting active line with it is vertical adopt active line move towards that direction is consistent, the vertical propulsion for adopting active line Direction with it is horizontal adopt active line to move towards direction consistent.To plan exploitation space, quickly arranges active line, divide end side, non-work Make side and working pit edge.
Preferably, before step (3) further include: when upper layer, exploitation paneling is finished, and to mining area of lower layer deepening, is repeated Step (2) enters step (3) until the distance between first end side 13 is less than the horizontal length of the ramp of step 12.Work as coal mine When shape coal mine long narrow for inclination multiple seam, suitable mode should be selected to exploit, select suitable work according to the concrete condition in coal seam Make line arrangement.When the horizontal length for the ramp that the distance between first end side 13 is greater than step 12, mining area is indicated Space it is relatively large, be suitble to using tendency arrangement active line, exploited according to step (2), so as to quick In-pit dumping.
Preferably, recovery method further includes step (4), and when upper layer, exploitation paneling is finished, to mining area of lower layer deepening, weight Multiple step (3) stop exploitation until being advanced into boundary.When the distance between first end side 13 is less than the ramp of step 12 It when horizontal length, indicates that the space of mining area is relatively small, is no longer appropriate for tendency arrangement active line, be more suitable for opposite extend and move towards Exploitation is moved towards after active line, is exploited according to step (3), be can reduce coal petrography and mix, and is improved choosing and is adopted ability.
Recovery method further include:, can when horizontal length of the distance between the first end side 13 equal to the ramp of step 12 (2) or step (3) are entered step, at this point, the mining method of step (2) and step (3) is suitable for mining area, can arbitrarily be selected It selects, or is selected according to other mining factors.
The exploitation process of the recovery method of open coal mine is described further below.Fig. 2 is to adopt in the specific embodiment of the invention The flow diagram of the recovery method of open coal mine.As shown in Fig. 2,
The first step is that the follow-up distance extended between In-pit dumping area and mining area forms reserved space, so as in coal mine bottom It being capable of the opposite laying length for extending working pit edge when exploitation.
Second step is the size for comparing the distance between first end side between the horizontal length of ramp, to determine to adopt Working pit edge is laid with which kind of mode (horizontal adopt or vertical adopt).
Third step is that arrangement is inclined in mining area when the distance between first end side is greater than the horizontal length of ramp First working pit edge, and propulsion (such as step (2)) is moved towards along coal seam.4th step is when the distance between first end side is less than tiltedly When the horizontal length in ramp, the second working pit edge of arrangement is moved towards in mining area and reserved space, and promote along the tendency in coal seam (such as step (3)).
When there are when the coal seam of multiple mining area's areas relatively large (being determined by second step), then need to repeat third for coal mine Step.
When there are when the coal seam of multiple mining area's areas relatively small (being determined by second step), then need to repeat the 4th for coal mine Step.
In addition, in second step, it, can basis when the distance between first end side is equal with the horizontal length of ramp The actual conditions of coal mine select third step or the 4th step.
From the description above with practice it is found that open coal mine provided by the invention recovery method, compared with prior art, Have the advantage that upper layer it is relatively open mining area's use tendency arrangement exploitation, along move towards propulsion, so as to It realizes quick casting, reduces transportation cost;In the mining area that lower layer is relatively narrow, work can be increased by the way that reserved space is arranged The length of line, while arrangement exploitation is moved towards in use, is promoted along tendency, it is short to be able to solve coal mine bottom active line, developing The problem of arrangement of conveying system difficulty, while can also improve choosing and adopt ability, reduces coal petrography severity of mixing up, by tendency arrangement and Arrangement combinations exploitation is moved towards, can be further ensured that the safe and efficient production in mine.
It should be understood by those ordinary skilled in the art that: the above is only a specific embodiment of the present invention, and It is not used in the limitation present invention, all any modification, equivalent substitution, improvement and etc. within purport of the invention, done should all include Within protection scope of the present invention.

Claims (7)

1. a kind of recovery method of open coal mine characterized by comprising
(1) the follow-up distance extended between In-pit dumping area and mining area forms reserved space;
(2) it is promoted in the mining area and forms the first working pit edge and two relatively parallel first end sides, first work Side includes step, when the distance between first end side is greater than the horizontal length of the ramp of the step, first work The tendency direction along mineral deposit is helped to arrange, the mining area promotes to the direction of moving towards in the mineral deposit;
(3) to mining area's deepening described in lower layer, the second working pit edge and two are formed in the mining area and the reserved space Relatively parallel second end side, second working pit edge includes the step, when the distance between first end side is less than institute The horizontal length of the ramp of step is stated, second working pit edge is arranged along the direction of moving towards in the mineral deposit, the exploitation Area is promoted to the tendency direction in the mineral deposit.
2. the recovery method of open coal mine according to claim 1, which is characterized in that extend the method packet of follow-up distance It includes:
The internal dumping in the In-pit dumping area is lagged to the stope of the mining area with progress.
3. the recovery method of open coal mine according to claim 1, which is characterized in that in step (2) and/or step (3) In further include:
The horizontal length of the ramp is 8~12.5 times of the step height.
4. the recovery method of open coal mine according to claim 1, which is characterized in that in step (3) further include:
The direction of propulsion of first working pit edge and the direction of propulsion of second working pit edge are mutually perpendicular to.
5. the recovery method of open coal mine according to any one of claims 1 to 4, which is characterized in that before step (3) Further include:
It to mining area's deepening described in lower layer, repeats step (2), until the distance between first end side is less than the institute of the step The horizontal length for stating ramp enters step (3).
6. the recovery method of open coal mine according to any one of claims 1 to 4, which is characterized in that the recovery method Further include step (4):
It to mining area's deepening described in lower layer, repeats step (3), until being advanced into boundary.
7. the recovery method of open coal mine according to any one of claims 1 to 4, which is characterized in that the recovery method Further include:
When horizontal length of the distance between the first end side equal to the ramp of the step, (2) can be entered step or walked Suddenly (3).
CN201611183026.XA 2016-12-20 2016-12-20 The recovery method of open coal mine Active CN106593448B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611183026.XA CN106593448B (en) 2016-12-20 2016-12-20 The recovery method of open coal mine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611183026.XA CN106593448B (en) 2016-12-20 2016-12-20 The recovery method of open coal mine

Publications (2)

Publication Number Publication Date
CN106593448A CN106593448A (en) 2017-04-26
CN106593448B true CN106593448B (en) 2018-12-04

Family

ID=58599613

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611183026.XA Active CN106593448B (en) 2016-12-20 2016-12-20 The recovery method of open coal mine

Country Status (1)

Country Link
CN (1) CN106593448B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107542464B (en) * 2017-09-28 2019-01-25 西安科技大学 A kind of pinpoint blasting method under the conditions of open coal mine shovel and truck technology
CN107989617B (en) * 2017-12-05 2019-03-05 昆明冶金高等专科学校 A kind of strip mining transformation method of gently inclined orebody
CN108825242B (en) * 2018-05-16 2020-04-03 西安科技大学 Exploitation method suitable for inclined multi-coal-seam strip mine
CN109118926B (en) * 2018-09-26 2020-12-08 西安科技大学 Strip mine mining program demonstration physical model and use method thereof
CN110029994B (en) * 2019-04-15 2020-02-21 中国矿业大学 Opposite-mining opposite-excavation mining stress control method for close-distance coal seam
CN110107299B (en) * 2019-06-17 2020-12-25 王建鑫 Open pit coal mine step mining and stripping and transportation road arrangement system and method and mining method
CN110318759B (en) * 2019-08-09 2021-01-12 辽宁工程技术大学 Deep transverse mining shallow longitudinal mining inclined coal seam open pit mining method

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2474094B1 (en) * 1979-12-14 1986-05-30 Conoco Inc TRANSPORT OF MINING DEBT IN SLUDGE FORM
CN101555796A (en) * 2009-03-15 2009-10-14 赵刚 Opencast combined mining method of steeply inclined coal seam groups
CN101899976A (en) * 2010-07-15 2010-12-01 煤炭科学研究总院太原研究院 Continuous coal mining process method of open-pit coal mine
CN102889084A (en) * 2012-09-05 2013-01-23 中国煤炭科工集团太原研究院 Continuous mining technique for thin coal layer of opencast coal mine
CN103133003A (en) * 2013-02-25 2013-06-05 中国矿业大学 Opencast mine end slope near-slope mining method
CN103216238A (en) * 2012-12-28 2013-07-24 中国神华能源股份有限公司 Open pit coal mine mining process
CN103216237A (en) * 2012-12-28 2013-07-24 中国神华能源股份有限公司 Open pit coal mine mining process
CN104405393A (en) * 2014-10-15 2015-03-11 郑照 Coal mine mining method
CN106194189A (en) * 2016-07-30 2016-12-07 肖双双 A kind of mining sequence of the long narrow opencut of inclined seam

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2474094B1 (en) * 1979-12-14 1986-05-30 Conoco Inc TRANSPORT OF MINING DEBT IN SLUDGE FORM
CN101555796A (en) * 2009-03-15 2009-10-14 赵刚 Opencast combined mining method of steeply inclined coal seam groups
CN101899976A (en) * 2010-07-15 2010-12-01 煤炭科学研究总院太原研究院 Continuous coal mining process method of open-pit coal mine
CN102889084A (en) * 2012-09-05 2013-01-23 中国煤炭科工集团太原研究院 Continuous mining technique for thin coal layer of opencast coal mine
CN103216238A (en) * 2012-12-28 2013-07-24 中国神华能源股份有限公司 Open pit coal mine mining process
CN103216237A (en) * 2012-12-28 2013-07-24 中国神华能源股份有限公司 Open pit coal mine mining process
CN103133003A (en) * 2013-02-25 2013-06-05 中国矿业大学 Opencast mine end slope near-slope mining method
CN104405393A (en) * 2014-10-15 2015-03-11 郑照 Coal mine mining method
CN106194189A (en) * 2016-07-30 2016-12-07 肖双双 A kind of mining sequence of the long narrow opencut of inclined seam

Also Published As

Publication number Publication date
CN106593448A (en) 2017-04-26

Similar Documents

Publication Publication Date Title
CN106593448B (en) The recovery method of open coal mine
CN104727820B (en) Two-step sublevel open-stop and delayed filling mining method
CN106121648B (en) A kind of sublevel open stoping mining chassis route ore drawing afterwards filling mining method
CN106894817B (en) A kind of mechanization Upward slicing wedging mixed filling mining codes
CN106869931B (en) A kind of barren rock and cementing layering wedging mining with stowing technique and its structure
CN105201506B (en) The mining methods of afterwards filling are reinforced before a kind of heir
CN104358574B (en) The horizontal room-and-pillar stoping of gently inclined orebody
CN104143284B (en) A kind of deep open pit production model system
CN106869933A (en) A kind of block fills and stops adopting the method for coal pillar width with reference to reduction super high seam
CN108060924A (en) High-dipping multi-seams thin deposit mechanization combinations for mining methods
CN108716402B (en) A kind of Semicontinuous Technology in Surface Coal Mines intermediate axle arrangement
CN106121643A (en) The reserved retaining wall ore deposit two step nesting combination method of mining by the way of filling
CN106194189A (en) A kind of mining sequence of the long narrow opencut of inclined seam
CN106869937B (en) Help interior discharge method in opencut end
CN109026006A (en) Exploitation open pit slope covers the new method of mineral products
CN106761759B (en) A kind of coal-mining method of open coal mine
CN103061767B (en) Lower to horizontal slice Dry-placed fill mining
CN206092058U (en) Adopt overlying strata incline subregion isolation slip casting and fill structure
CN107725054A (en) A kind of recovery method of the changeable narrow vein in inclination angle
RU2528704C1 (en) Method of open working out of steep deposits of platform shape
CN105626074B (en) A kind of big thick ore body mining methods
CN104481538B (en) The processing method of interlayer in a kind of non-coal mine high-dipping multilayer ore body
CN107227957B (en) A kind of slight slope and thin ore body compartment Dry-placed fill method
CN106948819A (en) A kind of shrinkage and breast method for slipping formula ore chute ore removal certainly
CN109209383B (en) Method for preventing and treating rock burst by double-upward-mountain mining

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