CN103711489B - The exploitation method of narrow vein basin shape nugget - Google Patents
The exploitation method of narrow vein basin shape nugget Download PDFInfo
- Publication number
- CN103711489B CN103711489B CN201310683437.5A CN201310683437A CN103711489B CN 103711489 B CN103711489 B CN 103711489B CN 201310683437 A CN201310683437 A CN 201310683437A CN 103711489 B CN103711489 B CN 103711489B
- Authority
- CN
- China
- Prior art keywords
- nugget
- ore
- pedestrian
- arrange
- haulage way
- 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
Links
Landscapes
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Catching Or Destruction (AREA)
Abstract
The invention discloses the exploitation method of a kind of narrow vein basin shape nugget, comprise step (1), nugget minimum point is determined in boring; (2), annular gallery is arranged on the top of nugget, bottom haulage way is arranged bottom nugget, bottom nugget, arrange that ore chute, pedestrian's connecting taxiway are also mutually through by bottom haulage way, centered by pedestrian's connecting taxiway, arrange at least one ventilation pedestrain raise respectively to annular flat lane, top; (3), drive a well bottom nugget along each ventilation pedestrian and carry out upstriker back production, lay irregular pillar therebetween to support goaf top plate; (4), little span back production is adopted for nugget Zhou Bu district; Supporting process is carried out to the fracture area of fault tectonic; To roof rock globality difference but lithology hard and have the region of suitable lumpiness adopt pipe-seam type anchor rod protect top.The invention provides a kind of exploitation method solving stope ponding, ore carrying quickness and high efficiency, goaf top plate convenient management reliable narrow vein basin shape nugget.
Description
Technical field
The invention belongs to mine technology field, relate to a kind of mining method, particularly relate to the exploitation method of a kind of narrow vein basin shape nugget.
Background technology
Mining development for a long time, many underground mine exploitation methods are there is, but these exploitation methods existing are only applicable to the single condition of ore body occurrence status, but for the exploitation that space occurrence status is high " basin " the shape nugget of middle low surrounding, adopt said method just to there is a lot of problem, the exploitation of such as " basin " shape nugget as adopt conventional under to the method for operation.There is following problem in the method:
1, stope ponding is difficult to discharge: owing to being lower to operation from a high position to low level, occur descending along operating direction, operation wastewater can not flow out voluntarily, accumulates in the scope of operation.During owing to carrying out Drilling borehole, because base plate ponding cannot correct eye position, the end, and during powder charge, waterproof wax need be coated with on powder stick.Discharge ponding, the nest that catchments need be offered temporarily, with pumping drainage, increase effluent cost.
2, ore removal difficulty: owing to adopting Electric rake haulage ore, need ore to hoist haulage from lower, compare by ore from eminence toward lower haulage, scraping ore deposit amount is few, and haulage efficiency extreme difference, cannot ensure that normal operation circulates, and also increases productive power.
3, goaf top plate difficult management: to a certain extent, Stope roof will be immersed in ponding completely, and stablizing of goaf top plate is uncontrollable in descending operation, increases impoverishment rate in mining, loss late.
Summary of the invention
The technical problem to be solved in the present invention is, for the above-mentioned defect of prior art, provides a kind of exploitation method solving stope ponding, ore carrying quickness and high efficiency, goaf top plate convenient management reliable narrow vein basin shape nugget.
The technical solution adopted for the present invention to solve the technical problems is:
An exploitation method for narrow vein basin shape nugget, is characterized in that, comprise the following steps:
(1), nugget detection: bore detecting is carried out to this nugget, and determines nugget minimum point;
(2), arrange that journey is opened in developing: according to nugget result of detection, annular gallery is arranged on the top of nugget, bottom haulage way is arranged at nugget bottom part down, bottom nugget, arrange that ore chute, pedestrian's connecting taxiway are also mutually through by bottom haulage way, centered by pedestrian's connecting taxiway, arrange at least one ventilation pedestrain raise respectively to annular flat lane, top, described annular gallery and bottom haulage way are linked with respectively and lead to extraneous outside conveying gallery;
(3), back production: carry out upstriker back production along each ventilation pedestrain raise bottom nugget, can irregular pillar be laid according to ore situation of change therebetween, to support goaf top plate;
(4), roof control: Classification Management is taked to top board, wherein little span back production is adopted for nugget Zhou Bu district, safeguard the globality of roof rock; Supporting is carried out to the fracture area of fault tectonic, controls the inbreak of loose rock mass; To roof rock globality difference but lithology hard and have the region of suitable lumpiness adopt pipe-seam type anchor rod protect top to carry out roof control.
In described step (1), according to detection principles, bore detecting is carried out to nugget, draw out nugget floor isohypse, by the minimum point of the nugget base plate isohypse determination nugget of drafting.
In described step (2), described upper, annular gallery is connected with outside haulage way, and described bottom haulage way is also connected with outside haulage way.
In described step (2), annular gallery is arranged specifically in the described top at nugget: according to the nugget base plate isohypse drawn, and arranges upper, annular gallery along the highest isohypse in nugget base plate isohypse.
In described step (2), describedly bottom nugget, arrange bottom haulage way specifically: bottom ore deposit, arrange bottom haulage way from nearest outside haulage way, arteries and veins tunnels to nugget bottom part down outward.
In described step (2), described ore chute is arranged specifically: the inclination angle of ore chute is greater than 45 °, and the height of ore chute is determined according to the absolute altitude of nugget minimum point and the outside haulage way discrepancy in elevation.
In described step (2), described pedestrian's connecting taxiway is arranged specifically: the inclination angle of pedestrian's connecting taxiway is less than 30 °, and the height of described pedestrian's connecting taxiway is determined according to the absolute altitude of nugget minimum point and the outside haulage way discrepancy in elevation.
In described step (2), described ventilation pedestrain raise is arranged specifically: arrange many ventilation pedestrain raises, spatially in " umbrella frame " shape, tunnels along the pulse, bottom nugget, forms emergency exit with the annular gallery UNICOM on nugget top.
In described step (3), described upstriker back production specifically: from the bottom of nugget, along ventilation pedestrain raise; start production ore from the bottom to top, and in recovery process, according to goaf top plate actual state; the local indwelling ore pillar needed, to guarantee to protect safety coal extraction.
In described step (4), little span back production specifically: according to Stope roof actual state, in time adjustment rooming span, when steady of roof is better, selects the span of 8-12 rice; When steady of roof is poor, select the span of 3-8 rice.
The present invention is directed to the concrete structure feature of basin shape nugget, on the basis determining nugget minimum point, arrange that journey is opened in developing, namely bottom " basin " shape nugget, go out to send layout development engineering, the defect existed in prior art can be solved preferably on the one hand, solve the problem such as ventilation, pedestrian, Ore Transportation of nugget on the other hand.The mode of exploitation is from " basin " shape nugget bottom, upwards carries out operation, carry out ascending mining along mineral ore tendency.Ascending mining is by low level to high-order homework, and the waste water that the scope of operation produces directly can flow automatically from the scope of operation and enter bottom haulage way and can not accumulate in operation area; Do not have operation water to assemble equally, goaf top plate would not be made to contact ponding, and top board can not soften because of the effect of water, argillization, and its steadiness can not reduce, and is conducive to roof control; Ascending mining, the ore after explosion is from high-order toward low level haulage, moves down by ore deadweight, quick, laborsaving; Solve stope ponding and stope ore handling difficulty preferably, be conducive to stope ground roof control.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is that the embodiment of the present invention arranges the top view opening journey;
Fig. 2 is that the embodiment of the present invention arranges the sectional side elevation opening journey.
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
An exploitation method for narrow vein basin shape nugget, comprises the following steps:
(1), determine nugget minimum point: bore detecting is carried out to this nugget, determine nugget minimum point.According to bore detecting principle from high to low, bore detecting is carried out to nugget, draw out nugget base plate isohypse, as shown in Figure 1, the concentric circular lines shown in figure is nugget base plate isohypse, by the minimum point of the base plate isohypse determination nugget of drafting, shown in figure, the toroid in bosom is exactly minimum isohypse, and minimum point is minimum isocontour center.
(2), arrange that journey is opened in developing: as shown in Figure 1, 2, annular gallery is arranged on the top of nugget, bottom haulage way is arranged bottom nugget, bottom nugget, arrange that ore chute, pedestrian's connecting taxiway are also mutually through by bottom haulage way, centered by pedestrian's connecting taxiway, arrange at least one ventilation pedestrain raise respectively to annular flat lane, top, described annular gallery and bottom haulage way are linked with respectively and lead to extraneous outside conveying gallery; Described layout comprises each step of design, tunneling construction, and mining excavation construction adopts routine techniques, does not repeat them here.
According to the exploration result of whole nugget, and according to opening the design planning of journey, first arrange two outside haulage ways, the annular gallery that a correspondence designs, the bottom haulage way that another correspondence designs.Article two, outside haulage way prospective design, tunneling construction adopt routine techniques, do not repeat them here.
Then, annular gallery is arranged on the described top at nugget, and its arrangement principle solves pedestrian, ventilation and emergency exit problem.Specifically according to the ore bedy groundbathymetric drawn, upper, annular gallery is arranged along the highest annular elevation line in ore bedy groundbathymetric, tunneling construction can from the haulage way of top, two scope of operations are divided to carry out tunneling construction, the gradient 6 ‰, specifications section 2.4m × 2.4m, tunnels along the pulse, then mutually through.
Describedly bottom nugget, arrange bottom haulage way, its arrangement principle solves pedestrian, ventilation, draining, Ore Transportation and emergency exit problem, specifically bottom ore deposit, arrange bottom haulage way from nearest outside haulage way, the tunneling construction gradient and end face specification adopt conventional scheme, the tunneling construction gradient 6 ‰ in the present embodiment, specifications section 2.4m × 2.4m, arteries and veins tunnels outward to nugget bottom part down.
The arrangement principle of described ore chute be ore under guaranteeing to make to adopt from stope from slipping in the haulage way of bottom, concrete technical indicator designs according to actual conditions, the present embodiment specifically inclination angle is greater than 45 °, this inclination angle slips under being conducive to ore, specifications section 1.8m × 1.8m, ore chute height is determined depending on the concrete condition of nugget elevation of bottom and the outside haulage way discrepancy in elevation, and the present invention is not construed as limiting.
The arrangement principle of described pedestrian's connecting taxiway guarantees that operating personnel can arrive the top stope scope of operation from bottom haulage way, guarantee freshly distinguished and admirablely can enter the scope of operation, specifically inclination angle is less than 30 °, specifications section 1.8m × 1.8m, the concrete condition highly depending on nugget elevation of bottom and the outside haulage way discrepancy in elevation is determined.
Described ventilation pedestrain raise, its arrangement principle guarantees pedestrian's connecting taxiway and the through so that pedestrian of ventilating of top haulage way, guarantees emergency exit, general layout 4, specifically dug ore chute and pedestrian's connecting taxiway and mutually through after, arrange 4 ventilation pedestrain raises, spatially in " umbrella frame " shape, specifications section 1.8m × 2.4m, tunnels along the pulse, with formation emergency exit, nugget top bottom nugget, so far, complete all journeys of opening to arrange.
(3), back production: drive a well along each ventilation pedestrian bottom nugget and carry out upstriker back production, can irregular pillar be arranged according to ore situation of change therebetween, to support goaf top plate;
Described back production refers to and completes the mining such as mine locating, the developing of top and the bottom haulage way, pedestrian's connecting taxiway, ore chute, ventilation pedestrain raise preparatory construction to a nugget, and after reaching the mining condition of Safety regulations stipulate, the ore recuperation work carried out.The work such as back production comprises operation preparation, rock drilling (Drilling big gun hole), powder charge, blows out, stope ventilation, second-time breakage, stope haulage ore (scraper scraping), ore chute ore drawing, bottom haulage way transport, it is a groundwork of results mining achievement, the whole operation of back production all can adopt corresponding prior art, does not repeat them here.
The present invention adopts upstriker back production, described upstriker back production from the bottom of nugget, along ventilation pedestrain raise; start production ore from the bottom to top, and in recovery process, according to goaf top plate actual state; the local indwelling ore pillar needed, to guarantee to protect safety coal extraction.Described ore pillar is, when back production, part ore is reserved into column, to reach the object supporting goaf top plate.
In the present invention the ore pillar reserved be irregular pillar, described irregular pillar refers to that at the ore pillar size arranged in goaf, array pitch, line-spacing be not unified, but in recovery process, determines according to goaf top plate actual state.The arrangement principle of irregular pillar is: ore pillar height is mineral ore height, and specifications section is 3m × 3m, array pitch 8-15 rice, line-spacing 6-10 rice.
(4), roof control: due to " basin " shape nugget complex genesis, fault intersection is generally had to appear in stope, Stope roof globality is poor, in addition nugget is by the impact of later structural, axle portion, basin stress Relatively centralized, therefore control ground, basin pressure to manifest, the measure doing roof control well is: adopt different management methods for nugget diverse location and structure difference thereof:
A, for Zhou Bu district, basin, the primary stress in this kind of region is concentrated, and presses with mostly being expansion, adopts little span back production, can control the secondary tensile stress at goaf top plate preferably, effectively safeguard the globality of roof rock for nugget Zhou Bu district; Described span, refers to the real space distance between adjacent two ore discharge posts, and the array pitch of ore pillar then refers to the center distance of two ore discharge posts.In the present invention, little span back production refers to: according to Stope roof actual state, and adjustment rooming span, when steady of roof is better, can select the span of 8-12 rice in time; When steadiness is poor, should select the span of 3-8 rice, the selection of concrete span specifically sets according to stope field condition.
B, supporting process is carried out to the fracture area of fault tectonic.This kind of region is pressed with mostly being a prose style free from parallelism, generally adopts wooden support, can control the inbreak of loose rock mass preferably;
By adopting method of the present invention, implement at Mayang Copper Deposit, Hunan 42208 stope, effect is better.Concrete enforcement has been carried out in place, performance: this ore deposit 22# arteries and veins occurs a region Basin Tectonic at northern 5 line positions, and mineral ore thickness is 1.62 meters, and pitch inclination angle average out to 25 °, basin area about 6000 ㎡, bottom at the bottom of basin under 65m level haulage gallery 12 meters.
The shift efficiency adopting the inventive method is 10 tons, the shift efficiency adopting prior art working to the dip is 6 tons, improves 40%, adopts cost of winning of the present invention to be 82 yuan/ton, adopt prior art working to the dip cost of winning be 110 yuan/ton, cost of winning reduces by 40%.In recovery process, operation water gravity flow discharge is unimpeded, does not need to use submersible pump draining.Roof control aspect, top board, by the immersion of operation ponding, does not occur causing because of impeded drainage that top board is softening, argillization situation.
Claims (7)
1. an exploitation method for narrow vein basin shape nugget, is characterized in that, comprise the following steps:
(1), nugget detection: bore detecting is carried out to this nugget, and determines nugget minimum point;
(2), arrange that journey is opened in developing: according to nugget result of detection, annular gallery is arranged on the top of nugget, bottom haulage way is arranged at nugget bottom part down, bottom nugget, arrange that ore chute, pedestrian's connecting taxiway are also mutually through by bottom haulage way, centered by pedestrian's connecting taxiway, arrange at least one ventilation pedestrain raise respectively to annular flat lane, top, described annular gallery and bottom haulage way are linked with respectively and lead to extraneous outside conveying gallery;
(3), back production: carry out upstriker back production along each ventilation pedestrain raise bottom nugget, can irregular pillar be laid according to ore situation of change therebetween, to support goaf top plate; Described upstriker back production is specifically: from the bottom of nugget, along ventilation pedestrain raise, start production ore from the bottom to top, and in recovery process, according to goaf top plate actual state, the local indwelling ore pillar needed, to guarantee safety coal extraction;
(4), roof control: Classification Management is taked to top board, wherein little span back production is adopted for nugget Zhou Bu district, safeguard the globality of roof rock; Supporting is carried out to the fracture area of fault tectonic, controls the inbreak of loose rock mass; To roof rock globality difference but lithology hard and have the region of suitable lumpiness adopt pipe-seam type anchor rod protect top to carry out roof control; Described little span back production is specifically: according to Stope roof actual state, and adjustment rooming span, when steady of roof is better, selects the span of 8-12 rice in time; When steady of roof is poor, select the span of 3-8 rice.
2. the exploitation method of narrow vein basin according to claim 1 shape nugget, it is characterized in that, in described step (1), according to detection principles, bore detecting is carried out to nugget, draw out nugget base plate isohypse, by the minimum point of the nugget base plate isohypse determination nugget of drafting.
3. the exploitation method of narrow vein basin according to claim 2 shape nugget, it is characterized in that, in described step (2), annular gallery is arranged specifically in the described top at nugget: according to the nugget base plate isohypse drawn, and arranges upper, annular gallery along the highest isohypse in nugget base plate isohypse.
4. the exploitation method of narrow vein basin according to claim 1 shape nugget, it is characterized in that, in described step (2), describedly bottom nugget, arrange bottom haulage way specifically: bottom ore deposit, arrange bottom haulage way from nearest outside haulage way, arteries and veins tunnels to nugget bottom part down outward.
5. the exploitation method of narrow vein basin according to claim 1 shape nugget, it is characterized in that, in described step (2), described ore chute is arranged specifically: the inclination angle of ore chute is greater than 45 °, and the height of ore chute is determined according to the absolute altitude of nugget minimum point and the outside haulage way discrepancy in elevation.
6. the exploitation method of narrow vein basin according to claim 1 shape nugget, it is characterized in that, in described step (2), described pedestrian's connecting taxiway is arranged specifically: the inclination angle of pedestrian's connecting taxiway is less than 30 °, and the height of described pedestrian's connecting taxiway is determined according to the absolute altitude of nugget minimum point and the outside haulage way discrepancy in elevation.
7. the exploitation method of narrow vein basin according to claim 1 shape nugget, it is characterized in that, in described step (2), described ventilation pedestrain raise is arranged specifically: arrange many ventilation pedestrain raises, spatially in " umbrella frame " shape, along the pulse tunnel, bottom nugget, form emergency exit with the annular gallery UNICOM on nugget top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310683437.5A CN103711489B (en) | 2013-12-12 | 2013-12-12 | The exploitation method of narrow vein basin shape nugget |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310683437.5A CN103711489B (en) | 2013-12-12 | 2013-12-12 | The exploitation method of narrow vein basin shape nugget |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103711489A CN103711489A (en) | 2014-04-09 |
| CN103711489B true CN103711489B (en) | 2016-04-13 |
Family
ID=50404792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310683437.5A Active CN103711489B (en) | 2013-12-12 | 2013-12-12 | The exploitation method of narrow vein basin shape nugget |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103711489B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667584A (en) * | 2018-12-26 | 2019-04-23 | 远安县燎原矿业有限责任公司 | A kind of phosphorus ore abundant little faults location recovery method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1162690A (en) * | 1996-04-12 | 1997-10-22 | 崔正洙 | Underground mining process |
| RU2464422C2 (en) * | 2010-12-03 | 2012-10-20 | Общество С Ограниченной Ответственностью "Группа "Магнезит" | Open mining method |
| CN103147759A (en) * | 2013-03-02 | 2013-06-12 | 玉溪大红山矿业有限公司 | Prospecting and short-hole shrinkage mining method of small inclined ore body |
| 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 |
| RU2490462C2 (en) * | 2011-11-09 | 2013-08-20 | Федеральное Государственное Бюджетное Учреждение Науки Институт Химии И Химической Технологии Сибирского Отделения Российской Академии Наук (Иххт Со Ран) | Method of open mining of steep oblong deposits |
-
2013
- 2013-12-12 CN CN201310683437.5A patent/CN103711489B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1162690A (en) * | 1996-04-12 | 1997-10-22 | 崔正洙 | Underground mining process |
| RU2464422C2 (en) * | 2010-12-03 | 2012-10-20 | Общество С Ограниченной Ответственностью "Группа "Магнезит" | Open mining method |
| RU2490462C2 (en) * | 2011-11-09 | 2013-08-20 | Федеральное Государственное Бюджетное Учреждение Науки Институт Химии И Химической Технологии Сибирского Отделения Российской Академии Наук (Иххт Со Ран) | Method of open mining of steep oblong deposits |
| 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 |
| CN103147759A (en) * | 2013-03-02 | 2013-06-12 | 玉溪大红山矿业有限公司 | Prospecting and short-hole shrinkage mining method of small inclined ore body |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103711489A (en) | 2014-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103557002B (en) | A kind of mechanized concentrates drop shaft filling-up method | |
| CN103775127B (en) | A kind of low-permeable high gas layer group topping Comprehensive Gas Control method | |
| CN104533416B (en) | Pole big thick ore body massive mechanical non-pillar sublevel caving mining methods | |
| CN108868771B (en) | Mining method for horizontal medium-length hole stoping of inclined medium-thickness ore body | |
| CN105649631B (en) | A kind of efficient mining methods of the mechanization of slight slope and thin ore body | |
| CN103967494B (en) | A kind of shallow-hole shrinkage afterwards filling mining methods | |
| CN103437769B (en) | Combination is reproduced structure medium-length hole ore blast and is worked in coordination with cable bolting afterwards filling mining method | |
| CN103206215B (en) | Precontrol top upward access cut-and-filling stopping method | |
| CN102518464B (en) | Method for extracting gas at corner on recovery working face in coal mine | |
| CN104747190A (en) | Thin ore-body mechanized highly-layering continuous mining method | |
| CN104405436B (en) | A kind of method improving ore body Tight filling rate | |
| CN103089266A (en) | Drift-pillar-free sublevel barnyard caving mining method of open pit transferred underground transitional period | |
| CN103184872A (en) | Construction method of one-time excavation for large-section vertical well | |
| CN103953344A (en) | Downward drift layered cemented filling mining method | |
| CN102071940A (en) | Construction method for mine shaft through multilayer goaf | |
| CN103104259A (en) | Inclination fragmentation ore body segment top board reconstruction middle-deep hole ore break down filling mining method | |
| CN104033151A (en) | Safe mining method of ten million-ton mine under complicated conditions of dual-system coal seams | |
| CN103696774B (en) | Aboveground down-hole parallel construction staple shaft frame development method | |
| CN109751050B (en) | Downward concave-convex rib-free inlaid continuous layered filling mining method | |
| CN110043263A (en) | Low-angle dip based on subregion Pre-control roof is crushed mineral deposit medium-length hole enhanced recovery method | |
| CN104790918A (en) | Method for mining coal bed gas from cluster well and horizontal well combined ground under complex terrain condition | |
| CN205638458U (en) | Accelerate construction structures of broken system construction speed of underground swift current | |
| CN103557001B (en) | A kind of low section high oper cylinler shrink afterwards filling mining method | |
| CN109339785A (en) | A kind of intensive mining methods of gently inclined medium thick orebody multiple-unit combination | |
| CN101725348A (en) | Pre-control roof open stoping spallation subsequent filling mining method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160811 Address after: Lu Jia Ping Zhen Jiu Qu 419413 Huaihua city of Hunan Province, Mayang Miao Autonomous County Bay (Mayang copper mine) Patentee after: Hunan senxin Mining Group Limited by Share Ltd Address before: 419413 Huaihua City, Hunan province Mayang Miao Autonomous County jouquwan Patentee before: Hunan Huayang Copper Industry Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180711 Address after: 419413 Hunan Huaihua Mayang Miao Autonomous County Lujia Ping Town, 9 Qu Wan copper mine. Patentee after: Mayang Hua Sen Mining Co., Ltd. Address before: 419413 Hunan Huaihua Mayang Miao Autonomous County Lujia Ping Town Qu Jiu Wan (formerly Mayang copper mine) Patentee before: Hunan senxin Mining Group Limited by Share Ltd |