CN108590747B - Wall type full-face extraction hydraulic column temporary support subsequent filling method - Google Patents
Wall type full-face extraction hydraulic column temporary support subsequent filling method Download PDFInfo
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- CN108590747B CN108590747B CN201810335503.2A CN201810335503A CN108590747B CN 108590747 B CN108590747 B CN 108590747B CN 201810335503 A CN201810335503 A CN 201810335503A CN 108590747 B CN108590747 B CN 108590747B
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000000605 extraction Methods 0.000 title description 7
- 238000009423 ventilation Methods 0.000 claims abstract description 31
- 239000011435 rock Substances 0.000 claims abstract description 23
- 238000005065 mining Methods 0.000 claims abstract description 19
- 238000005520 cutting process Methods 0.000 claims abstract description 13
- 238000005422 blasting Methods 0.000 claims description 15
- 238000005553 drilling Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000000839 emulsion Substances 0.000 claims description 3
- 239000002360 explosive Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 2
- 230000001174 ascending effect Effects 0.000 claims 3
- 230000003203 everyday effect Effects 0.000 claims 2
- 230000001681 protective effect Effects 0.000 claims 1
- 239000011378 shotcrete Substances 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 6
- 239000010931 gold Substances 0.000 description 6
- 229910052737 gold Inorganic materials 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 210000003462 vein Anatomy 0.000 description 5
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 4
- 229910052753 mercury Inorganic materials 0.000 description 4
- 230000005641 tunneling Effects 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 239000005442 atmospheric precipitation Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
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- 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
- 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
- E21F15/02—Supporting means, e.g. shuttering, for filling-up materials
- E21F15/04—Stowing mats; Goaf wire netting; Partition walls
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- 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)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a wall type full-mining hydraulic column temporary support subsequent filling method, which can economically, safely and efficiently mine ore bodies and well ensure the life safety of miners, firstly, a pedestrian ventilation channel is tunneled to ascend the mountain and is used as a channel for personnel and equipment to enter a stope and is used as a stope ventilation channel, then, a chute is tunneled from a specified position of a drift tunnel, a cutting tunnel is tunneled, a scraper chamber is tunneled along the advancing of a stope working face, the interval width is 6m, an upper ventilation opening of the stope is blasted when the top is stoped, the whole ore body is subjected to strip type and retreat type mining from one side to the other side, the mining is carried out along ore blocks in the strip along the direction in an inclined manner, the cutting tunnel is taken as a free face, a certain space is stoped, a hydraulic support is used for supporting, an operation space is reserved, then, a horizontal blast hole is drilled by an air-leg type rock drill, the effective length of 2.2, 3-5 rows of blast holes are blasted each time, and the distance between one row of blast holes close to the top plate and the top plate is kept to be 0.3-0.5 m.
Description
Technical Field
The invention relates to the technical field of mining methods, in particular to a wall type full-mining hydraulic column temporary support subsequent filling method.
Background
The mercury cave gold ore is positioned in the east section inclined to the back of a cinerary castle in the near east, west and is a Carlin type gold ore centralized output area on Xingren-Anlongjin ore at the south edge of the Yangzi quasi-platform, the usable ore amount of the mercury cave gold ore is 69.63 multiplied by 104t, the average grade is 6.72 multiplied by 10 < -6 >, the metal amount is 4679kg, the usable ore amount of the mercury cave gold ore is 445.56 multiplied by 104t, the average grade is 4.5 multiplied by 10 < -6 >, the metal amount is 20050kg, an ore bed in the area is a composite hidden ore bed with a layer control type as a main part and a fracture type as an auxiliary part, the mercury cave gold ore belongs to a medium-low temperature hydrothermal liquid Carlin type gold ore, the ore body is layered and similar to the layer, the production state is consistent with the rock layer, the inclination angle is 5-10 degrees, and the thickness is thin, the grade is rich, has wavy undulation, incline to the east and does not have, the characteristics that a plurality of ore bodies overlap from top to bottom on the space in the trend, and the mining area is one part among the ash castle anticline hydrogeological unit, and the supply of groundwater contains two aspects in the aquifer under the natural condition: the first is vertical supply, the second is lateral runoff supply from an upstream aquifer, exposed strata in the area are basically marl and mudstone at the first section of the night lang group, the topography is mainly the hilly mountain land, the atmospheric precipitation infiltration condition is not good, but the distribution area of the upstream aquifer and the downstream aquifer in the mining area is large, therefore, the lateral supply from the upstream is an important supply source of underground water in the area, after the aquifer is supplied, underground water is discharged from west to east out of the area to become a supply source of the downstream aquifer, only shallow underground water is discharged from gully in the area in a small spring form to form a ground surface, the fault in the area develops, the structural joint crack and the development between strata damage the integrity of the strata, become a channel for filling the underground water, the mining causes the water guiding crack to also become a channel for filling the underground water, the strata in the hydrogeology condition are in a medium-layer shape, the strata in the mining area are all rocks, and mainly comprise detritus and impure carbonate rocks, the engineering geological type is a layered type of a sedimentary cause, rock and soil in a region can be divided into three engineering geological rock groups of loose rock groups, hard rock groups and soft rock groups according to lithological and physical mechanical indexes of rock layers, an ore body is positioned in a anticline core part, the rock layer is relatively flat in occurrence, and in order to adapt to local geological conditions, a wall type comprehensive extraction hydraulic column temporary support subsequent filling method is necessary to be provided for mining the ore body.
Disclosure of Invention
The invention aims to provide a wall type full-recovery hydraulic column temporary support subsequent filling method to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
wall type full-stoping hydraulic column temporary support subsequent filling method, comprising a pedestrian ventilation channel, a scraper cave mouth, a vein-following transportation channel, a mountain body, ores, a filling body, a filling well, a filling retaining wall, hydraulic columns, blast holes, ore bodies, a chute, a vein-following, a roof and a stope, wherein one side of the middle part of the mountain body is provided with the filling body, the other side of the middle part of the mountain body is an ore body, the stope is arranged between the ore body and the mountain body, a plurality of hydraulic columns are fixed in the stope, one side of the filling body close to the hydraulic columns is fixedly provided with the filling retaining wall, a plurality of blast holes are also arranged in the ore body, the front end of each blast hole is positioned at the ore body, the scraper channel is arranged at the front end of the ore body, one side of the scraper channel far away from the hydraulic columns is in a penetrating connection manner and provided with the chute, the front end of the chute is in a penetrating connection manner, one side of the vein-following transportation channel close to the ore body is provided with the vein-following, the front end of the scraper gallery is connected with a plurality of scraper mouths on the ore body in a penetrating manner, a plurality of filling wells are arranged at the rear end of the mountain body, and the filling wells penetrate through the inner position of the excavated ore body.
As a further scheme of the invention: the ore body can be divided into two types by thickness, one is a gently inclined thin ore body, and the other is a gently inclined medium-thickness ore.
As a further scheme of the invention: the hydraulic columns are DW28 type single bodies and are externally injected, three rows of hydraulic columns are supported from a working surface, the row distance is 3-2.5m, and the distance is 1.5-1.0 m.
As a further scheme of the invention: the stope enters air from a middle section haulage roadway, enters a stope working face through a pedestrian ventilation patio and a pedestrian communication channel, dirty air is discharged into an upper middle section return air gallery from the pedestrian ventilation patio at the other end of the stope, enters a ventilation shaft and is discharged to the ground surface, and the stope adopts a JK58-2NO.4 local fan for auxiliary ventilation.
As a further scheme of the invention: and the filling retaining wall is built every 15-25 m along the trend direction.
As a further scheme of the invention: and drilling horizontal blast holes by using an air-leg rock drill, wherein the effective length of the drilled horizontal blast holes is 2.2m, 3-5 rows of blast holes are blasted each time, and the distance between one row of blast holes close to the top plate and the top plate is kept to be 0.3-0.5 m.
As a still further scheme of the invention: and 2# rock emulsion explosive is adopted during blast hole blasting, the non-electric detonator is detonated in a differential sequence, the minimum resistant line is 1m, the hole distance is 1 m-1.2 m, the hole depth is 2.2m, 5 rows are blasted each time, and the top protection layer is ensured by using a light surface blasting or non-coupling charging control blasting technology.
Compared with the prior art, the invention has the beneficial effects that: the invention has reasonable design, can economically, safely and efficiently mine ore bodies by using a wall type full-face mining hydraulic column temporary support subsequent filling method, well ensures the life safety of miners, firstly excavates a pedestrian ventilation tunnel to ascend the mountain, is used as a passage for personnel equipment to enter a stope and is used as a stope ventilation passage, then excavates a chute from a specified position of a drift tunnel, excavates a cutting tunnel, excavates a scraper chamber along with the advancing of a stope working face, has the interval width of 6m, finishes blasting along with the stope to the top of a ventilation opening at the upper part of the stope, strips and retreats the whole ore body from one side to the other side, adopts a cutting tunnel as a free face to stope a certain space along an ore block in a strip along an inclined direction, uses a hydraulic column support to reserve an operation space, then adopts an air-leg type rock drill to drill a horizontal blast hole, drills an effective length of 2.2m, 3-5 rows of blast holes are blasted each time, the distance between one row of blast holes close to the top plate and the top plate is kept to be 0.3-0.5 m, and after stope stoping is finished, filling retaining walls are built along the ore blocks in an inclined and long mode after stoping is carried out for 15-25 m along the trend direction, and tailing filling is carried out.
Drawings
Fig. 1 is a top view of a wall type full extraction hydraulic column temporary support and subsequent filling method during ore body mining.
Fig. 2 is a front view of a wall type full extraction hydraulic column temporary support and subsequent filling method during ore body mining.
Fig. 3 is a partial side view of a wall type full extraction hydraulic column temporary support followed by filling method in ore body extraction.
In the figure: the underground mining construction comprises a pedestrian ventilation channel 1, a scraper tunnel 2, a scraper tunnel mouth 3, a vein-following transportation channel 4, a mountain 5, ores 6, a filling body 7, a filling well 8, a filling retaining wall 9, a hydraulic column 10, a blast hole 11, an ore body 12, a chute 13, a vein-penetrating 14, a roof 15 and a mining field 16.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, in the embodiment of the present invention, a wall type full-mining hydraulic column temporary supporting subsequent filling method includes a pedestrian ventilation duct 1, a scraper tunnel 2, a scraper cave mouth 3, a vein-following transportation duct 4, a mountain body 5, ores 6, a filling body 7, a filling well 8, a filling retaining wall 9, hydraulic columns 10, blast holes 11, ore bodies 12, a chute 13, a vein-through 14, a roof 15 and a stope 16, wherein one side of the middle part of the mountain body 5 is provided with the filling body 7, the other side of the middle part of the mountain body 5 is provided with the ore body 12, the ore body 12 can be divided into two types by thickness, one type is a slowly inclined thin ore body, the other type is a slowly inclined medium thick ore body, a stope 16 is arranged between the ore body 12 and the mountain body 5, a plurality of hydraulic columns 10 are fixed in the stope 16, the hydraulic columns 10 are DW28 type single external injection type, the hydraulic columns 10 are three rows from a working face, the row spacing is 3-2.5m, and the spacing is 1.5-1.0 meter, one side that obturator 7 is close to hydraulic column 10 is fixed to be equipped with and fills barricade 9, fill barricade 9 and build one along every 15m ~ 25m of trend direction, ore body 12 is inside has still seted up a plurality of big gun holes 11, the front end position of big gun hole 11 is equipped with ore 6, and ore body 12 front end position is equipped with rake way 2, one side through connection that hydraulic column 10 was kept away from to rake way 2 has been equipped with the drop shaft 13, and the front end through connection of drop shaft 13 has a vein transfer way 4, and one side that vein transfer way 4 is close to ore body 12 is equipped with vein puncture 14, and vein transfer way 4 has been close to the upper end position of vein puncture 14 and has been seted up pedestrian ventilation way 1, the front end through connection of rake way 2 has a plurality of rake mouths 3 on ore body 12, a plurality of filling wells 8 have been seted up to mountain body 5's rear end position, and filling well 8 runs through in the inside position of excavated ore body 12.
The stope 16 is ventilated from the middle section haulage roadway, enters the stope working face through the pedestrian ventilation patio and the pedestrian communication channel, dirty wind is discharged from the pedestrian ventilation patio at the other end of the stope into the upper middle section return air gallery, enters the ventilation shaft and is discharged to the ground surface, and the stope adopts JK58-2NO.4 type local fan for auxiliary ventilation.
And drilling horizontal blast holes by using an air-leg rock drill in the stoping of the ore body 12, wherein the effective length of the drilled blast holes is 2.2m, 3-5 rows of blast holes are blasted each time, and the distance between one row of blast holes close to the top plate and the top plate is kept to be 0.3-0.5 m.
And 2# rock emulsion explosive is adopted during blasting of the blast hole 11, the non-electric detonator is detonated in a differential sequence, the minimum resistance line is 1m, the hole distance is 1 m-1.2 m, the hole depth is 2.2m, 5 rows are blasted each time, and the top protection layer is ensured by using a light surface blasting or non-coupling charging control blasting technology.
The working principle of the invention is as follows: firstly, tunneling a pedestrian ventilation channel to ascend the mountain, serving as a passage for personnel and equipment to enter a stope and serving as a stope ventilation channel, tunneling a chute from a specified position of a drift-through roadway, tunneling a cutting roadway, tunneling a scraper chamber along with the propulsion of a stope face, wherein the interval width is 6m, blasting is completed when a vent at the upper part of the stope reaches the top along with the stope, strip-type and retreat-type stope is performed on the whole ore body from one side to the other side, stoping is performed along the ore blocks in strips along the inclined direction, a certain space is stoped by taking the cutting roadway as a free face, supporting is performed by using a hydraulic support, an operation space is reserved, then a horizontal blast hole is drilled by using an air-leg rock drill, the effective length of the horizontal blast hole is 2.2.2 m, 3-5 rows are blasted each time, a blast hole close to the top plate keeps a distance of 0.3-0.5 m from the top plate, and after stope is completed, and (5) filling tailings.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (1)
1. A wall type full-recovery hydraulic column temporary support subsequent filling method comprises the following steps:
(1) determining stope structure parameters:
the stope ore blocks are arranged along the trend, the length of the ore blocks is 50m, the height of the middle section is 40m, 4m pillars are left among the ore blocks, and the top pillars and the bottom pillars are 3 m;
(2) and (3) cutting engineering:
the mining and cutting engineering comprises a pedestrian ventilation ascending, a scraper chamber, a chute and a cutting tunnel, wherein the pedestrian ventilation ascending is firstly tunneled and used as a passage for personnel and equipment to enter a stope and used as a stope ventilation passage, the chute is tunneled from a specified position of a drift tunnel, the cutting tunnel is tunneled, the scraper chamber is tunneled along with the advancing of a stope face, the interval width is 6m, a vent at the upper part of the stope is blasted along with stope to the top, the pedestrian ventilation ascending, the cutting tunnel and the scraper chamber are all supported by adopting smooth blasting and shotcrete nets, rock drilling is carried out by YT-28 type and YSP-45 type rock drills, and the working face is matched with JK58-2NO.4 type local fan for assisting in ventilation;
(3) stoping in a stope:
mining the whole ore block from one side to the other side in a strip mode and a backward mode, and mining along the ore block in the strip mode along the inclination direction; firstly, taking a cutting roadway as a free surface, stoping out a certain space, supporting by using a hydraulic prop, reserving an operation space, then drilling horizontal blast holes by using an air-leg rock drill, wherein the effective length of the drilled holes is 2.2m, 3-5 rows of blast holes are blasted each time, the distance between one row of blast holes close to a top plate and the top plate is kept between 0.3m and 0.5m, 2# rock emulsion explosive is used for blasting, a non-conductive blasting tube detonator differential sequence is used for blasting, the minimum resistance line is 1m, the hole distance is 1m to 1.2m, the hole depth is 2.2m, five rows of blast holes are blasted each time, a top protection layer is ensured by using a smooth surface blasting and non-coupling charging control blasting technology, after ore is dropped in each stope, firstly, a 30kW electric rake is used for conveying ores from an inclined working surface of the roadway to the cutting roadway through an electric rake, and then a 30kW electric rake is;
(4) managing and supporting a top plate:
reserving a protective top pillar and a bottom pillar for supporting a top plate of an ore block; in order to recover ores to the maximum extent and reduce the size of an ore pillar, light hydraulic prop equipment is assisted to support a top plate, and the specific supporting form and arrangement are determined according to the field condition; local broken stress concentration area, anchor net protects the top, the row spacing between the hydraulic prop: according to the condition of ore rocks and the use experience of other mines, three rows of hydraulic supports are tentatively supported from the working surface, the row spacing is 3-2.5m, and the spacing is 1.5-1.0 m;
(5) ventilation of a stope:
each stope enters wind from a middle section haulage roadway, enters a stope working face through a pedestrian ventilation patio and a pedestrian communication channel, dirty wind is discharged into an upper middle section return air gallery from the pedestrian ventilation patio at the other end of the stope, enters a ventilation shaft and is discharged to the ground surface, and the stope adopts a JK58-2NO.4 local fan for auxiliary ventilation;
(6) filling:
after stoping of the stope is finished, building a filling retaining wall along the inclined length of the ore block after stoping for 15-25 m along the trend direction, and filling tailings;
(7) and (3) stoping circulation:
the stoping operation cycle comprises rock drilling, blasting, ventilation, ore removal, pillar removal and support, three operations are carried out every day, the ore removal amount is 50 t/d-70 t/d every day, and filling is carried out after stoping for a certain distance along the trend.
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| CN201810335503.2A CN108590747B (en) | 2018-04-16 | 2018-04-16 | Wall type full-face extraction hydraulic column temporary support subsequent filling method |
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| CN109505650B (en) * | 2018-11-20 | 2020-06-16 | 贵州大学 | Hydraulic filling retaining wall convenient to clean |
| CN109763452A (en) * | 2019-01-17 | 2019-05-17 | 广西新港湾工程有限公司 | A kind of broken reef construction method of underwater hydraulic column |
| CN110145307B (en) * | 2019-06-13 | 2020-12-18 | 山东科技大学 | Method for preventing and treating hard roof roadway-retained rock burst by wide roadway and flexible chamber wall |
| CN112160753B (en) * | 2020-09-28 | 2022-08-12 | 牌洪坤 | Roadway tunneling mining method using gold-steel sand wire cutting as premise |
| CN113137233B (en) * | 2021-05-07 | 2023-03-17 | 文山麻栗坡紫金钨业集团有限公司 | High-grade top protecting layer and pillar residual ore recovery method |
| CN114151086A (en) * | 2021-11-29 | 2022-03-08 | 紫金(厦门)工程设计有限公司 | Construction method for large-scale mining of bottom structure of thick and large broken ore body |
| CN116378664B (en) * | 2023-03-26 | 2024-05-03 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Mining method suitable for crushing ore bodies |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1383920A (en) * | 1971-12-31 | 1974-02-12 | Coal Industry Patents Ltd | Apparatus for conveying broken rock material |
| CN104141495A (en) * | 2014-07-25 | 2014-11-12 | 长沙有色冶金设计研究院有限公司 | Filling mining method for gently inclined medium-thickness phosphate ore body |
| CN105626071A (en) * | 2015-12-30 | 2016-06-01 | 北京矿冶研究总院 | Mining method for gently inclined thin ore body |
| CN106121643A (en) * | 2016-08-31 | 2016-11-16 | 湖北三鑫金铜股份有限公司 | The reserved retaining wall ore deposit two step nesting combination method of mining by the way of filling |
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2018
- 2018-04-16 CN CN201810335503.2A patent/CN108590747B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1383920A (en) * | 1971-12-31 | 1974-02-12 | Coal Industry Patents Ltd | Apparatus for conveying broken rock material |
| CN104141495A (en) * | 2014-07-25 | 2014-11-12 | 长沙有色冶金设计研究院有限公司 | Filling mining method for gently inclined medium-thickness phosphate ore body |
| CN105626071A (en) * | 2015-12-30 | 2016-06-01 | 北京矿冶研究总院 | Mining method for gently inclined thin ore body |
| CN106121643A (en) * | 2016-08-31 | 2016-11-16 | 湖北三鑫金铜股份有限公司 | The reserved retaining wall ore deposit two step nesting combination method of mining by the way of filling |
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