CN116335671A - Stoping waste rock following filling mining method - Google Patents
Stoping waste rock following filling mining method Download PDFInfo
- Publication number
- CN116335671A CN116335671A CN202310318202.XA CN202310318202A CN116335671A CN 116335671 A CN116335671 A CN 116335671A CN 202310318202 A CN202310318202 A CN 202310318202A CN 116335671 A CN116335671 A CN 116335671A
- Authority
- CN
- China
- Prior art keywords
- stope
- stoping
- filling
- ore
- pseudo
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000005065 mining Methods 0.000 title claims abstract description 29
- 239000010878 waste rock Substances 0.000 title claims abstract description 21
- 238000005520 cutting process Methods 0.000 claims abstract description 11
- 230000005641 tunneling Effects 0.000 claims abstract description 9
- 238000005553 drilling Methods 0.000 claims abstract description 7
- 238000005422 blasting Methods 0.000 claims abstract description 5
- 239000010865 sewage Substances 0.000 claims abstract description 4
- 239000004575 stone Substances 0.000 claims description 10
- 239000002699 waste material Substances 0.000 claims description 10
- 230000009194 climbing Effects 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000011435 rock Substances 0.000 claims description 2
- 238000000605 extraction Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
- E21C41/22—Methods of underground mining; Layouts therefor for ores, e.g. mining placers
-
- 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
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/005—Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Remote Sensing (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a stoping waste rock following filling mining method, which comprises the following steps: the method comprises the steps that a stope room and a stope are arranged in a pseudo-inclined mode along the trend of an ore body, a stage transportation roadway is tunneled along the trend of the ore body, and a stope connecting road is tunneled along one end of the stope in the stage transportation roadway; tunneling and cutting a drift through one end of a stope by using a parallel ore body trend to form a ore breaking space; drilling a horizontal medium-length hole along a pseudo-inclined direction by taking a cutting gallery as a free surface for blasting; step stoping along the pseudo-inclined direction is utilized, and ore removal is carried out through a remote control scraper; and the exposed area of the stope is controlled by adopting waste rock to follow filling, fresh air flows enter the stope from the lower middle section transportation roadway, and sewage air is discharged from the upper middle section transportation roadway. The invention adopts the pseudo-inclined arrangement stope, so that the mechanized degree of the stoping operation of the gently inclined thin ore body is improved, and the ore extraction efficiency is improved; meanwhile, the production efficiency of the stope is improved by using a bench stope and waste rock follow-up filling mode of the stope and the stope; the exposed area of the stope is flexibly controlled.
Description
Technical Field
The invention relates to the technical field of underground mining of metal ores, in particular to a stoping waste rock following filling mining method.
Background
The efficient mining of the gently inclined thin ore body is always a difficult problem of the mine, and the important special subject of large-scale and mechanical stoping of the gently inclined thin ore body is realized. At present, most of rare metal ore body morphological characteristics of gold ore, molybdenum ore, nickel ore and the like in China are gradually inclined thin ore bodies with inclination angles of 15-20 degrees and thicknesses of 3-5 m, and due to the limitations of the inclination angles and thickness conditions of the ore bodies, the problems that mechanical equipment is difficult to climb, ore cannot slide automatically and the like exist, only an empty site method and a room column method of electric raking ore drawing are adopted for mining, so that the stoping efficiency of the ore bodies is low, the operation safety is poor, and the construction requirements of modern intelligent mines are difficult to meet. Therefore, the problem of high-efficiency mining of the gently inclined thin ore body is solved, and important technical support can be provided for the construction of high-efficiency and intelligent mining of the metal ore in China.
Disclosure of Invention
Aiming at the problems in the related art, the invention provides a stoping waste rock following filling mining method.
The technical scheme of the invention is realized as follows:
a stoping waste rock following filling mining method, comprising:
the method comprises the steps that a stope room and a stope are arranged in a pseudo-inclined mode along the trend of an ore body, a stage transportation roadway is tunneled along the trend of the ore body, and a stope connecting road is tunneled along one end of the stope in the stage transportation roadway;
tunneling and cutting a drift through one end of a stope by using a parallel ore body trend to form a ore breaking space; drilling a horizontal medium-length hole along a pseudo-inclined direction by taking a cutting gallery as a free surface for blasting;
step stoping along the pseudo-inclined direction is utilized, and ore removal is carried out through a remote control scraper;
in the stoping process, waste stones are adopted to follow and fill the exposed area of the stope, fresh air flow enters the stope from the lower middle section transportation roadway, and sewage air is discharged from the upper middle section transportation roadway.
Wherein, adopt the waste rock to follow the exposure area of filling control stope includes: the remote control scraper is used for ore removal through stope connecting channels at the end parts of the stope which are arranged in a pseudo-inclined mode, a filling retaining wall is constructed at the stope connecting channels after ore removal is completed, the self-filling return air connecting channels are used for filling goafs with waste stones, and the remote control scraper is used for piling and leveling the waste stones.
In addition, the goaf filling advancing direction is consistent with the stoping direction, and the waste rock filling is advanced by increasing the stoping distance later, so that the ore stoping and filling are synchronous.
In addition, the stoping waste rock following filling mining method further comprises the following steps: after stoping in the stope is completed, a filling return air connecting passage is tunneled at one end of the stope, so that preparation is made for stoping ventilation and filling of the next stope.
Optionally, during stoping, a plurality of stope working surfaces in the stope simultaneously operate, and a stope in front of the stope in the stope advances to a stope behind the stope to perform stoping, so that bench stope in the stope is formed.
Optionally, during stoping, multiple sections in the pseudo-oblique direction are stoped simultaneously in the stope, and the section close to the goaf direction advances by one ore breaking step distance to form the progressive bench stoping in the stope.
Optionally, the length of the ore room is 100-120 m, and the pseudo-inclination angle is adjusted according to the actual length of the ore room, so that the climbing angle of the rock drilling and ore drawing equipment is smaller than 10 degrees.
Alternatively, the stope is 40-60 m long along the pseudo-oblique direction, the width is 15-20 m, 2X 2m point columns are reserved between stopes, and top and bottom columns are reserved between stages for 3m.
Optionally, the point column is formed by a support airbag.
The beneficial effects are that: according to the invention, the mining field is arranged in a pseudo-inclined manner, so that the problem of climbing of mechanical equipment of the slowly-inclined ore body is solved, and the mechanical degree and ore extraction efficiency of the stoping operation of the slowly-inclined thin ore body are improved; simultaneously, the multi-working-face multi-stope simultaneous operation is realized by utilizing the bench stopes of the stopes and the stopes, so that the production efficiency of the stopes is greatly improved; and when the stoping working face is increased, the exposed area of a stope is flexibly controlled by utilizing a waste rock following filling mode, so that the stability of a roof of an ore body in the stoping process is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a stope following filling mining method according to an embodiment of the invention;
FIG. 2 is a layout of a stope following filling mining method according to an embodiment of the invention;
FIG. 3 is a cross-sectional view taken along line II-II of FIG. 2;
FIG. 4 is a cross-sectional view taken along line III-III of FIG. 2;
fig. 5 is a cross-sectional view taken along line IV-IV in fig. 2.
In the figure:
1. a return air tunnel; 2. stage transportation roadway; 3. filling a return air connecting channel; 4. filling waste stone; 5. filling a retaining wall; 6. caving ore; 7. a body to be mined; 8. stope connecting channels; 9. cutting a gallery; 10. a bottom post; 11. a ramp; 12. a top column; 13. medium-length holes; 14. and (5) a dot column.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the invention, fall within the scope of protection of the invention.
According to an embodiment of the present invention, there is provided a stoping gangue follow-up filling mining method.
As shown in fig. 1, a stope following filling mining method according to an embodiment of the present invention includes:
step S101, utilizing a pseudo-inclined arrangement of a mine room and a stope along the trend of the mine body, and tunneling a stage transportation roadway along the trend of the mine body, and tunneling a stope connecting road along one end of the stope in the stage transportation roadway;
step S103, tunneling and cutting a roadway through one end of a stope with parallel ore body directions to form an ore caving space; drilling a horizontal medium-length hole along a pseudo-inclined direction by taking a cutting gallery as a free surface for blasting;
step S105, performing bench extraction along the pseudo-inclined direction, and performing ore discharge through a remote control scraper; in the stoping process, waste stones are adopted to follow and fill the exposed area of the stope, fresh air flow enters the stope from the lower middle section transportation roadway, and sewage air is discharged from the upper middle section transportation roadway.
In one embodiment, when the exposed area of the stope is controlled by adopting the waste rock to follow the filling, the remote scraper is used for ore removal through a stope connecting channel at the end part of the stope which is arranged in a pseudo-inclined mode, a filling retaining wall is constructed at the stope connecting channel after ore removal, the self-filling return air connecting channel is used for filling goaf by adopting the waste rock, and the remote scraper is used for piling and leveling the waste rock. And the filling advancing direction of the goaf is consistent with the stoping direction, and the waste rock filling is advanced by increasing the stoping distance later, so that the ore stoping and filling are synchronous.
In one embodiment, after stoping in the stope is completed, a filling return air connecting channel is tunneled at one end of the stope to prepare for stoping ventilation and filling of the next stope. The bench type stoping can be performed in the following way: during stoping, a plurality of stope working surfaces in the ore room work simultaneously, and the stope in front of the stope in the ore room advances to the stope behind the stope to perform stoping, so that bench stope in the ore room is formed; and/or during stoping, simultaneously stoping a plurality of sections along the pseudo-oblique direction in the stope, and leading the section close to the goaf direction by one section to collapse the ore step distance at one time to form the progressive ladder section stope in the stope.
In specific application, as shown in fig. 2-5, the ore room is arranged along the trend of the ore body, the ore room is 120m long, the stope is wide, the stope is arranged along the pseudo-inclined direction, the length is 45m, the width is 18m, 2 x 2m point pillars 14 are reserved between the stopes, the size of the reserved top pillars 12 between the stages is 3m, and the size of the bottom pillars 10 is 3m. A ramp 11 is arranged at one side of a mining room along the direction of the tunneling stage transportation roadway 2 and is connected with the upper and lower middle sections, and the ramp 11 is used as a return air roadway 1 of the next mining room after stoping is finished; and tunneling a stope connecting channel 8 along one end of a stope which is arranged in a pseudo-inclined manner in the stage transportation roadway, entering the stope, and then tunneling a cutting gallery 9 in parallel with the ore body trend to penetrate one end of the stope to form a ore breaking space, wherein during stoping, the cutting gallery is used as a free surface, and a drill jumbo is used for drilling a horizontal medium-length hole 13 along the pseudo-inclined direction for blasting. The remote control scraper is used for transporting the caving ore 6 to the drop shaft, fresh wind flows from the stage transportation roadway 2 to a stope through the stope connecting channel 8, and dirty wind after the stope is washed is transported out from the filling connecting channel 3; after stoping is finished, a filling retaining wall 5 is constructed on a bottom stope connecting channel 8, waste stone filling 4 is adopted to realize follow-up filling of a stope, waste stone is led in from the filling connecting channel 3, and a remote control scraper is used for piling and leveling.
According to the invention, the mining field is arranged in a pseudo-inclined manner, so that the problem of climbing of mechanical equipment of the slowly-inclined ore body is solved, and the mechanical degree and ore extraction efficiency of the stoping operation of the slowly-inclined thin ore body are improved; simultaneously, the multi-working-face multi-stope simultaneous operation is realized by utilizing the bench stopes of the stopes and the stopes, so that the production efficiency of the stopes is greatly improved; and when the stoping working face is increased, the exposed area of a stope is flexibly controlled by utilizing a waste rock following filling mode, so that the stability of a roof of an ore body in the stoping process is ensured.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (9)
1. A method of stoping a waste rock followed by filling mining, comprising:
the method comprises the steps that a stope room and a stope are arranged in a pseudo-inclined mode along the trend of an ore body, a stage transportation roadway is tunneled along the trend of the ore body, and a stope connecting road is tunneled along one end of the stope in the stage transportation roadway;
tunneling and cutting a drift through one end of a stope by using a parallel ore body trend to form a ore breaking space; drilling a horizontal medium-length hole along a pseudo-inclined direction by taking a cutting gallery as a free surface for blasting;
step stoping along the pseudo-inclined direction is utilized, and ore removal is carried out through a remote control scraper;
in the stoping process, waste stones are adopted to follow and fill the exposed area of the stope, fresh air flow enters the stope from the lower middle section transportation roadway, and sewage air is discharged from the upper middle section transportation roadway.
2. A method of stoping a gangue follow-up filling mining method as claimed in claim 1 wherein controlling the exposed area of the stope with the gangue follow-up filling comprises:
the remote control scraper is used for ore removal through stope connecting channels at the end parts of the stope which are arranged in a pseudo-inclined mode, a filling retaining wall is constructed at the stope connecting channels after ore removal is completed, the self-filling return air connecting channels are used for filling goafs with waste stones, and the remote control scraper is used for piling and leveling the waste stones.
3. A stoping gangue follow-up filling mining method as claimed in claim 2, wherein the goaf filling advancing direction is consistent with the stoping direction, and the gangue filling is advanced by increasing the stoping distance subsequently, so that ore stoping and filling are synchronized.
4. A method of stoping a gangue follow-up filling mining method as claimed in claim 3 further comprising:
after stoping in the stope is completed, a filling return air connecting passage is tunneled at one end of the stope, so that preparation is made for stoping ventilation and filling of the next stope.
5. The stoping waste rock following filling mining method according to claim 1, wherein during stoping, a plurality of stope working surfaces in a stope are operated simultaneously, and a front stope in the stope advances to a rear stope to perform stoping, so that bench stope in the stope is formed.
6. The stoping gangue follow-up filling mining method according to claim 1, wherein during stoping, a plurality of sections in a pseudo-inclined direction in a stope are stoped simultaneously, and a section next to the goaf is advanced by one ore breaking step distance to form an advancing bench stope in the stope.
7. The stoping waste rock following filling mining method according to claim 1, wherein the length of a ore room is 100-120 m, and the pseudo-inclination angle is adjusted according to the actual length of the ore room, so that the climbing angle of rock drilling and ore drawing equipment is smaller than 10 degrees.
8. The stope following filling mining method of claim 7, wherein the stope is 40 m-60 m long in the pseudo-inclined direction and 15 m-20 m wide, 2 x 2m point pillars are left between stopes, and top and bottom pillars are left 3m between stages.
9. The method of stoping, waste rock following and filling mining according to claim 8, wherein the point pillars are formed using support airbags.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310318202.XA CN116335671A (en) | 2023-03-28 | 2023-03-28 | Stoping waste rock following filling mining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310318202.XA CN116335671A (en) | 2023-03-28 | 2023-03-28 | Stoping waste rock following filling mining method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116335671A true CN116335671A (en) | 2023-06-27 |
Family
ID=86892607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310318202.XA Pending CN116335671A (en) | 2023-03-28 | 2023-03-28 | Stoping waste rock following filling mining method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116335671A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533517A (en) * | 2015-01-16 | 2015-04-22 | 中南大学 | High-segmentation upward deep hole ore extraction zero-dead-zone following filling mining method |
| CN104612692A (en) * | 2014-12-11 | 2015-05-13 | 中南大学 | Following-forming continuous-filling mining method for segmented ore-caving bottom structure |
| CN104989404A (en) * | 2015-06-05 | 2015-10-21 | 中南大学 | Diagonal ore-break-down medium-length hole mining method for steeply-inclined thin vein ore body |
| CN105370283A (en) * | 2015-11-23 | 2016-03-02 | 武汉理工大学 | Mechanical precut slot blasting mining method of slightly inclined thin jade ores |
| CN106194188A (en) * | 2016-07-21 | 2016-12-07 | 广西大学 | The quick-fried power of scraper collaborative carrying puppet tilts room and pillar stoping |
| CN111894584A (en) * | 2020-07-08 | 2020-11-06 | 中南大学 | Cemented filling mining method for fully-pseudo-arranged reserved roadway of slowly-inclined thin ore body |
| CN113279760A (en) * | 2021-06-25 | 2021-08-20 | 云南锡业股份有限公司卡房分公司 | Gradual-inclination thin ore body stepped type stoping waste rock following filling mining method |
| CN113738367A (en) * | 2021-09-02 | 2021-12-03 | 北京科技大学 | Sublevel caving downward filling mining method for complex broken and steeply inclined thin vein |
-
2023
- 2023-03-28 CN CN202310318202.XA patent/CN116335671A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612692A (en) * | 2014-12-11 | 2015-05-13 | 中南大学 | Following-forming continuous-filling mining method for segmented ore-caving bottom structure |
| CN104533517A (en) * | 2015-01-16 | 2015-04-22 | 中南大学 | High-segmentation upward deep hole ore extraction zero-dead-zone following filling mining method |
| CN104989404A (en) * | 2015-06-05 | 2015-10-21 | 中南大学 | Diagonal ore-break-down medium-length hole mining method for steeply-inclined thin vein ore body |
| CN105370283A (en) * | 2015-11-23 | 2016-03-02 | 武汉理工大学 | Mechanical precut slot blasting mining method of slightly inclined thin jade ores |
| CN106194188A (en) * | 2016-07-21 | 2016-12-07 | 广西大学 | The quick-fried power of scraper collaborative carrying puppet tilts room and pillar stoping |
| CN111894584A (en) * | 2020-07-08 | 2020-11-06 | 中南大学 | Cemented filling mining method for fully-pseudo-arranged reserved roadway of slowly-inclined thin ore body |
| CN113279760A (en) * | 2021-06-25 | 2021-08-20 | 云南锡业股份有限公司卡房分公司 | Gradual-inclination thin ore body stepped type stoping waste rock following filling mining method |
| CN113738367A (en) * | 2021-09-02 | 2021-12-03 | 北京科技大学 | Sublevel caving downward filling mining method for complex broken and steeply inclined thin vein |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108612530B (en) | Mining method for hanging wall surrounding rock crushing inclined medium-thickness ore body | |
| CN103590831B (en) | A kind of gentle dip is thin-the novel mining methods of middle thickness orebody | |
| CN102619513B (en) | Room and pillar type medium-length hole filling mining method using bottom ore withdrawal structures simultaneously arranged in original rock | |
| CN103527200B (en) | Bottom-column-free sectional Rhombic room afterwards filling mining method | |
| CN107829742B (en) | Caving-filling-open stope-caving mining method | |
| CN104153780B (en) | Lean ore body sublevel caving stays ore deposit continuous stoping technique | |
| CN101368482B (en) | Novel technique of slight-pitch ore body overall mining method | |
| CN111828007B (en) | Stoping method for residual studs in underground mine goaf | |
| CN108547618A (en) | A kind of two steps mining methods leave the recovery process of studding | |
| CN101285384B (en) | Large diameter, deep borehole and non undercutting mining method | |
| CN101881167B (en) | Coal face stump mining method | |
| CN113738367B (en) | Sublevel caving downward filling mining method for complex broken and steeply inclined thin vein | |
| CN109026005B (en) | Comprehensive mechanized ore-breaking layered caving mining method | |
| CN109505606A (en) | A kind of Pre-control roof mechanization sublevel open stoping afterwards filling mining methods | |
| CN114233295B (en) | One-lane multi-purpose mining method | |
| CN108505999A (en) | A kind of high prominent more lane method for arranging of working face of coal seam | |
| CN114592867A (en) | Temporary top pillar induced caving and sill pillar-free sublevel caving combined mining method | |
| CN110966005A (en) | Novel medium-length hole ore-breaking stage chamber method | |
| CN112727463A (en) | Mechanized filling mining method for steeply inclined thin ore vein under soft rock stratum condition | |
| CN110259450B (en) | Mining method for inclined-steeply inclined medium-thickness ore body | |
| CN110905513A (en) | Mining method of gently inclined thin ore body | |
| CN109630116B (en) | Mining method for inclined medium-thickness blind ore body | |
| CN113279760B (en) | Slowly-inclined thin ore body bench type stoping waste rock following filling mining method | |
| CN110863830A (en) | Two-step segmented medium-length hole extrusion ore-breaking stage artificial trench ore removal mining method | |
| CN110284884A (en) | Mining method of gentle dip-dip medium-thickness ore body |
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 |