CN104234716A - Bagged-cofferdam filling mining method - Google Patents
Bagged-cofferdam filling mining method Download PDFInfo
- Publication number
- CN104234716A CN104234716A CN201410346959.0A CN201410346959A CN104234716A CN 104234716 A CN104234716 A CN 104234716A CN 201410346959 A CN201410346959 A CN 201410346959A CN 104234716 A CN104234716 A CN 104234716A
- Authority
- CN
- China
- Prior art keywords
- filling
- cofferdam
- obturation
- mining method
- stoping
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000005065 mining Methods 0.000 title claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims description 33
- 238000005553 drilling Methods 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 7
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 7
- 241001330002 Bambuseae Species 0.000 claims description 7
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 7
- 239000011425 bamboo Substances 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 4
- 238000011084 recovery Methods 0.000 abstract description 5
- 239000004570 mortar (masonry) Substances 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000011435 rock Substances 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000000740 bleeding effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 238000009940 knitting Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005429 filling process Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
Landscapes
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention relates to a bagged-cofferdam filling mining method. For a stoping subarea, a bagged filling body cofferdam connected with an ore pillar to be mined is built, and then a mined area within the cofferdam of the stoping subarea is filled; the bagged-cofferdam filling mining method comprises the following steps: (1) erecting a three-dimensional meshed filling body fixing framework at the boundary of the stoping subarea; (2) putting the filled bags each with a feeding hole in the filling body fixing framework and fixing the filled bags on the fixing framework; and (3) filling the filled bags with mortar filling materials to form the bagged filling body cofferdam. The bagged-cofferdam filling mining method creates safe operation conditions for the recovery of the ore pillar, and as a result, the safe and efficient stoping of a point pillar and a bar pillar under the condition of a penetrating mined area can be realized, and the stoping rate and the mining efficiency of the ore pillar can be effectively improved.
Description
Technical field
The invention belongs to Cut-and-fill Mining Technology field, be specifically related to a kind of packed cofferdam filling mining method.
Background technology
In China's underground metal mine, the ore deposit amount of possessing of ore pillar or remnant ore is very considerable, and a lot of ore pillar grade of ore is high, and occurrence condition is complicated, form and situation unclear, multiaspect faces sky, and conventional mining method exploitation ubiquity the large problem of exploitation difficulty.Adopted open-stope method and these high-grade ore pillars of Caving Method with Large Space back production to be recovered to 10% ~ 20% in the past.And when adopting filling method back production, tall and big and under the condition that goaf is mutually through in goaf, existing filling process technology is difficult to the subregion isolation filling realizing goaf, thus the recovery of ore pillar need in obturation or obturation periphery construction works, high to the quality requirement of obturation, and be difficult to ensure the ore removal, ventilation etc. of stope everything goes well with your work and carry out, finally cause most of ore pillar to reclaim.Therefore, for this kind of ore body process for stoping complexity, poor stability, back production efficiency is low, loss and dilution is large, stoping cost is high, lacks safe and efficient and reliable Cut-and-fill Mining Technology at present.
Summary of the invention
The object of this invention is to provide a kind of packed cofferdam filling mining method, realize goaf subregion isolation and ore pillar partition recovery safely and efficiently.
Technical scheme of the present invention is: for back production subregion, and construct the packed obturation cofferdam be connected with post of waiting to dig up mine, the dead zone then in stoping-and-filling subregion cofferdam, comprises the following steps:
(1) in back production partition boundaries, three-dimensional netted obturation fixed frame is set up;
(2) filling bag being provided with charging aperture is placed in obturation fixed frame, filling bag is fixed in fixed frame;
(3) in filling bag, be filled with slurry placement material, form packed obturation cofferdam.
Run through dead zone and multiple ore pillar in certain limit can be combined and be divided into a back production subregion.When constructing cofferdam, make to treat that mining post has at least a face to be positioned at outside obturation cofferdam.
Steel tube member bar or wooden rod member is adopted to set up three-dimensional netted obturation fixed frame.
Described filling bag is provided with charging aperture and exhaust opening; Filling bag is provided with strap, filling bag to be bundled in fixed frame to be fixed with strap.
Bamboo board or plank is placed as baffle plate between filling bag and fixed frame.
Adopt the dead zone in tailing cemented filling mode stoping-and-filling subregion cofferdam, repeating said steps, until Tight filling.
Process for stoping comprises:
(1) dig stoping operation passage from the ore pillar face outside obturation cofferdam, enter ore pillar;
(2) carry out undercuting or digging drilling chamber in ore pillar bottom;
(3) adopt Upward slicing back production mode stooping pillaring or adopt upper centripetal deep hole elementary errors once to fall ore deposit stooping pillaring.
For the goaf formed after stooping pillaring, adopt tailing cemented filling mode carry out filling or with the together filling of adjacent back production subregion.
The present invention adopts packed filling method to form obturation cofferdam as the block body hindering filling slurry flowing, realize the subregion isolation filling in goaf, simultaneously by the consolidated fill in goaf in subregion, for stable operating conditions is created in the recovery of ore pillar, realize the safe and efficient back production of the some post under the condition of through goaf, bar post, effectively improve the rate of extraction and the production efficiency of ore pillar.
Accompanying drawing explanation
Fig. 1 is the mining methods schematic diagram that the present invention adopts Upward slicing back production mode stooping pillaring.
Fig. 2 is that the present invention adopts medium-length hole elementary errors once to fall the mining methods schematic diagram of ore deposit stooping pillaring.
In figure: 1-stope pillar; The packed obturation cofferdam of 2-; 3-cemented fill; 4-rock drilling lane; 5-shallow bore hole big gun hole; 6-has dug up mine post; 7-medium-length hole big gun hole.
Detailed description of the invention
In concrete enforcement, packed cofferdam of the present invention filling mining method comprises the following steps:
1, stope divides and arranges
According to maximum safe span and the maximum exposure area condition of ore deposit rock mass, run through dead zone and multiple ore pillar in certain limit are combined and be divided into a back production subregion.
2, packed filling process
Adopts packed tailings cofferdam placement method for the back production subregion divided, form the packed obturation cofferdam be connected with post for the treatment of dig up mine, and the post that makes to wait to dig up mine has at least a face to be positioned at outside obturation cofferdam so that back production, specifically comprises:
(1) in the back production partition boundaries of setting, set up three-dimensional netted obturation fixed frame, steel tube member bar or the erection of wooden rod member can be adopted;
(2) filling bag is placed in obturation fixed frame, wherein filling bag has two openings, respectively as charging aperture and exhaust opening.Strap can be established in filling bag to be convenient to fix.Filling bag is preferably flexible knitting bag, has certain tensile strength and bleeding performance.As one preferred embodiment, the horizontal length 5m-20m of filling bag, horizontal width are 1.8m-2.2m, and vertical height is 1m-1.5m;
(3) with the strap in filling bag filling bag is bundled in fixed frame and is fixed, and between filling bag and fixed frame, place baffle plate, such as bamboo board or plank;
(4) filling pipe is accessed filling bag charging aperture, be filled with slurry placement material, during discharge hole for discharge, stop filling;
(5) when the slip bleeding in filling bag, solidify, after forming packed obturation cofferdam, adopt the dead zone in tailing cemented filling mode stoping-and-filling subregion cofferdam;
(6) step (1) is repeated to step (5), until Tight filling.
3, process for stoping
(1) ore pillar is entered from the ore pillar face digging stoping operation passage outside obturation cofferdam;
(2) carry out undercuting or digging drilling chamber in ore pillar bottom;
(3) adopt Upward slicing back production mode stooping pillaring or adopt upper centripetal deep hole elementary errors once to fall ore deposit stooping pillaring;
(4) adopt scraper broken ore is transported to drop shaft or directly entrucking transport;
(5) for the goaf formed after stooping pillaring, adopt tailing cemented filling mode carry out filling or with the together filling of adjacent back production subregion.
Below by way of specific embodiments and the drawings 1,2, the present invention will be described in detail.
embodiment one
As can be seen from Figure 1, the packed cofferdam filling mining method that the present invention adopts, is applicable to goaf subregion isolation filling and ore pillar partition recovery.
As shown in Figure 1, when ore deposit rock is firm, by 1,2,3, No. 4 four ore pillar and between through dead zone be divided into a back production subregion.
Adopt packed tailing-filled method to form the packed obturation cofferdam be connected with post of waiting to dig up mine, the post that must make when constructing packed obturation cofferdam to wait to dig up mine has at least a face to be positioned at outside obturation cofferdam, and with the channel connection such as People's Bank of China, transport, ventilation.The concrete steps of packed filling are: 1. adjacent 1,2,3, adopt steel tube member bar to set up three-dimensional netted obturation fixed frame between 4 ore pillars, the horizontal interval of fixed frame steel tube member bar is 2m, vertically be spaced apart 1m, between steel pipe with steel pipe, adopt cast iron fastener to be connected; 2. by length be 10m, wide for 2m, high be 1m, be provided with the flexible knitting filling bag of charging aperture and exhaust opening two openings, fixingly architecturally and between filling bag and fixed frame, place bamboo board, bamboo board is fixing architecturally with iron wire; 3. filling pipe is accessed filling bag charging aperture, be filled with cement last mortar cemented filling material, stop filling when discharge hole for discharge; 4. when the slip bleeding in filling bag, solidify after, tailing cemented filling is carried out to the dead zone in back production subregion this layer of obturation cofferdam; 5. repeat step 1. to step 4., until back production subregion Tight filling.
To be filled recuperating is protected to desired strength, adopts Upward slicing back production mode stooping pillaring.The formation that first undercuts bottom ore pillar during back production undercuts layer, adopts shallow bore hole rock drilling equipment Drilling hole depth to be the horizontal big gun hole of 2 ~ 3m afterwards, and layering falls ore deposit.The major part of broken ore is first stayed in stope, as the job platform that continuation is adopted, until after the whole avalanche of this ore pillar, adopts scraper to carry out a large amount of ore removal.
The goaf formed after stooping pillaring, together will carry out filling with adjacent back production subregion.
embodiment two
As can be seen from Figure 2, time very firm for ore deposit rock, by 9,10,11, No. 12 four ore pillars and and through dead zone between stope filling body be divided into a back production subregion.
Packed tailing-filled method is adopted to form the packed obturation cofferdam be connected with adjacent obturation with post of waiting to dig up mine, must make when constructing packed obturation cofferdam to treat that mining post has at least a face to be positioned at outside obturation cofferdam, and with the channel connection such as People's Bank of China, transport, ventilation.The concrete steps of packed filling are: between 9,10,11, No. 12 ore pillars and adjacent obturation, 1. adopt steel tube member bar to set up three-dimensional netted obturation fixed frame, the horizontal interval of fixed frame steel tube member bar is 2m, vertically be spaced apart 1m, between steel pipe with steel pipe, adopt cast iron fastener to be connected; 2. by length be 10m, wide for 2m, high be 1m, be provided with the flexible knitting filling bag of charging aperture and exhaust opening two openings, fixingly architecturally and between filling bag and fixed frame, place bamboo board, bamboo board is fixing architecturally with iron wire; 3. filling pipe is accessed filling bag charging aperture, be filled with cement last mortar cemented filling material, stop filling when discharge hole for discharge; 4. when the slip bleeding in filling bag, solidify after, tailing cemented filling is carried out to the dead zone in back production subregion this layer of obturation cofferdam; 5. repeat step 1. to step 4., until back production subregion Tight filling.
To be filled recuperating is protected to desired strength, adopts upper centripetal deep hole elementary errors once to fall miner's skill stooping pillaring.During back production, rock drilling lane of first constructing bottom ore pillar, adopts medium-length hole rig Drilling upper centripetal deep hole afterwards in rock drilling lane, and both sides, rock drilling lane adopt shallow bore hole rock drilling equipment Drilling horizontal shallow hole, and elementary errors once falls ore deposit.Broken ore adopts scraper to carry out ore removal.
The goaf formed after stooping pillaring, together will carry out filling with adjacent back production subregion.
Claims (9)
1. a filling mining method, is characterized in that for back production subregion, and construct the packed obturation cofferdam be connected with post of waiting to dig up mine, the dead zone then in stoping-and-filling subregion cofferdam, comprises the following steps:
(1) in back production partition boundaries, three-dimensional netted obturation fixed frame is set up;
(2) filling bag being provided with charging aperture is placed in obturation fixed frame, filling bag is fixed in fixed frame;
(3) in filling bag, be filled with slurry placement material, form packed obturation cofferdam.
2. filling mining method according to claim 1, is characterized in that run through dead zone and the multiple ore pillar in certain limit to combine and be divided into a back production subregion.
3. filling mining method according to claim 1, is characterized in that making to treat that mining post has at least a face to be positioned at outside obturation cofferdam.
4. filling mining method according to claim 1, is characterized in that adopting steel tube member bar or wooden rod member to set up three-dimensional netted obturation fixed frame.
5. filling mining method according to claim 1, is characterized in that described filling bag is provided with charging aperture and exhaust opening; Filling bag is provided with strap, filling bag to be bundled in fixed frame to be fixed with strap.
6. filling mining method according to claim 1, is characterized in that placing bamboo board or plank between filling bag and fixed frame as baffle plate.
7., according to filling mining method according to claim 1, it is characterized in that adopting the dead zone in tailing cemented filling mode stoping-and-filling subregion cofferdam, repeating said steps, until Tight filling.
8., according to the filling mining method one of claim 1 ~ 7 Suo Shu, it is characterized in that process for stoping comprises:
(1) dig stoping operation passage from the ore pillar face outside obturation cofferdam, enter ore pillar;
(2) carry out undercuting or digging drilling chamber in ore pillar bottom;
(3) adopt Upward slicing back production mode stooping pillaring or adopt upper centripetal deep hole elementary errors once to fall ore deposit stooping pillaring.
9., according to filling mining method according to claim 8, it is characterized in that the goaf for being formed after stooping pillaring, adopt tailing cemented filling mode carry out filling or with the together filling of adjacent back production subregion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410346959.0A CN104234716B (en) | 2014-07-22 | 2014-07-22 | The packed cofferdam method of mining by the way of filling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410346959.0A CN104234716B (en) | 2014-07-22 | 2014-07-22 | The packed cofferdam method of mining by the way of filling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104234716A true CN104234716A (en) | 2014-12-24 |
| CN104234716B CN104234716B (en) | 2016-08-24 |
Family
ID=52223522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410346959.0A Active CN104234716B (en) | 2014-07-22 | 2014-07-22 | The packed cofferdam method of mining by the way of filling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104234716B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104695958A (en) * | 2015-03-02 | 2015-06-10 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Method for erecting first-layer ground net of ore removal stope |
| CN106968676A (en) * | 2017-03-27 | 2017-07-21 | 山西潞安环保能源开发股份有限公司 | The method that cavity is passed through in tunnelling |
| CN109098715A (en) * | 2018-08-14 | 2018-12-28 | 云南木利锑业有限公司 | Packed filling mining method |
| CN111550284A (en) * | 2020-06-28 | 2020-08-18 | 长沙矿山研究院有限责任公司 | Cofferdam type filling retaining wall |
| CN112081624A (en) * | 2020-09-15 | 2020-12-15 | 中南大学 | Mining environment reconstruction method based on waste tire recycling |
| CN117514329A (en) * | 2024-01-05 | 2024-02-06 | 中煤科工能源科技发展有限公司 | Mining cave filling method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1162058A (en) * | 1996-04-05 | 1997-10-15 | 李良健 | Residue-less pillar recovering method |
| CN1373286A (en) * | 2002-03-05 | 2002-10-09 | 殷惠钧 | Mining method by cutting ore breakdown and dry filling artificial ore pillars |
| CN101749019A (en) * | 2009-10-30 | 2010-06-23 | 韦立坚 | Method for forming artificial ore pillar and mining method |
| CN102434162A (en) * | 2011-12-27 | 2012-05-02 | 中矿金业股份有限公司 | Panel tailing filling mining method |
| CN103233739A (en) * | 2013-04-16 | 2013-08-07 | 北京矿冶研究总院 | Mining method for thick and large ore pillar under filling body package |
-
2014
- 2014-07-22 CN CN201410346959.0A patent/CN104234716B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1162058A (en) * | 1996-04-05 | 1997-10-15 | 李良健 | Residue-less pillar recovering method |
| CN1373286A (en) * | 2002-03-05 | 2002-10-09 | 殷惠钧 | Mining method by cutting ore breakdown and dry filling artificial ore pillars |
| CN101749019A (en) * | 2009-10-30 | 2010-06-23 | 韦立坚 | Method for forming artificial ore pillar and mining method |
| CN102434162A (en) * | 2011-12-27 | 2012-05-02 | 中矿金业股份有限公司 | Panel tailing filling mining method |
| CN103233739A (en) * | 2013-04-16 | 2013-08-07 | 北京矿冶研究总院 | Mining method for thick and large ore pillar under filling body package |
Non-Patent Citations (1)
| Title |
|---|
| 杨源伦: "金属矿山的矿柱回采", 《工程设计与研究》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104695958A (en) * | 2015-03-02 | 2015-06-10 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Method for erecting first-layer ground net of ore removal stope |
| CN104695958B (en) * | 2015-03-02 | 2017-03-15 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | A kind of erection method of ore removal stope first floor earth mat |
| CN106968676A (en) * | 2017-03-27 | 2017-07-21 | 山西潞安环保能源开发股份有限公司 | The method that cavity is passed through in tunnelling |
| CN109098715A (en) * | 2018-08-14 | 2018-12-28 | 云南木利锑业有限公司 | Packed filling mining method |
| CN111550284A (en) * | 2020-06-28 | 2020-08-18 | 长沙矿山研究院有限责任公司 | Cofferdam type filling retaining wall |
| CN112081624A (en) * | 2020-09-15 | 2020-12-15 | 中南大学 | Mining environment reconstruction method based on waste tire recycling |
| CN112081624B (en) * | 2020-09-15 | 2021-09-21 | 中南大学 | Mining environment reconstruction method based on waste tire recycling |
| CN117514329A (en) * | 2024-01-05 | 2024-02-06 | 中煤科工能源科技发展有限公司 | Mining cave filling method |
| CN117514329B (en) * | 2024-01-05 | 2024-03-19 | 中煤科工能源科技发展有限公司 | Mining cave filling method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104234716B (en) | 2016-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106223958B (en) | The slant middle thick orebody subregion rock drilling stage falls ore deposit afterwards filling collaboration mining codes | |
| CN105587318B (en) | A kind of method of mining by the way of filling of the parallel middle thickness orebody group continuous stoping of low-angle dip | |
| CN105041314B (en) | A kind of combined mining method of deep afterwards rooming-slicing ore pillar | |
| CN103590831B (en) | A kind of gentle dip is thin-the novel mining methods of middle thickness orebody | |
| CN104234716B (en) | The packed cofferdam method of mining by the way of filling | |
| CN103437769B (en) | Combination is reproduced structure medium-length hole ore blast and is worked in coordination with cable bolting afterwards filling mining method | |
| CN108661646A (en) | A kind of false top house column type shrink afterwards filling mining method | |
| CN111828007B (en) | Stoping method for residual studs in underground mine goaf | |
| CN102168579A (en) | Rib-pillar-free continuous sublevel filling method for mining preparation in medium-thickness slope crushed ore body vein | |
| CN104632220B (en) | Mining method with adjustable and controllable structure size of gentle dip medium-thickness ore body strip column reconstructed stope | |
| CN105804748B (en) | A kind of method of block mining Wall ore under open air transport system | |
| CN105422102B (en) | A kind of vertical medium-length hole ore blast subsection access back-filling method | |
| CN105909247A (en) | Non-pillar sublevel mining cemented filling mining method | |
| CN108798672B (en) | A kind of mining methods for the area's ore high-efficiency mining that collapses greatly | |
| CN111997616B (en) | Method for continuously recycling residual top-bottom column by adopting large section | |
| CN103437766B (en) | In-situ fragmentation mining method | |
| CN108533265B (en) | Utilize the filling mining method of concrete component assembling foundation | |
| CN110219650B (en) | Deep hole subsequent filling mining method in environment reconstruction stage | |
| CN105863727A (en) | Method for treating pillar goaf | |
| CN103233739A (en) | Mining method for thick and large ore pillar under filling body package | |
| RU2449125C1 (en) | Method to mine large sloping ore bodies | |
| CN106437838A (en) | Drawing and filling ores synchronous horizontal deep hole shrinkage method in the later stage after truck directly removing ores under polycrystalline substance | |
| CN114837667B (en) | Construction method for crushing stratum large-diameter vertical shaft by adopting vertical shaft heading machine | |
| CN106089204B (en) | A kind of method that remnant reclaiming is realized in positive deep hole great explosion caving | |
| CN109025996B (en) | Underground mine layer-by-layer extrusion and smooth blasting 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 | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190521 Address after: 332499 Wudu Industrial Park, Xiushui County, Jiujiang City, Jiangxi Province Patentee after: Jiangxi Xiushuixianglushan Tungsten Industry Co.,Ltd. Address before: 410012 No. 343 Lushan South Road, Changsha City, Hunan Province Patentee before: Changsha Institute of Mining Research Co.,Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Bagged cofferdam filling mining method Effective date of registration: 20220819 Granted publication date: 20160824 Pledgee: China Construction Bank Co.,Ltd. Xiushui sub branch Pledgor: Jiangxi Xiushuixianglushan Tungsten Industry Co.,Ltd. Registration number: Y2022980013064 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230905 Granted publication date: 20160824 Pledgee: China Construction Bank Co.,Ltd. Xiushui sub branch Pledgor: Jiangxi Xiushuixianglushan Tungsten Industry Co.,Ltd. Registration number: Y2022980013064 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Bagged cofferdam filling mining method Effective date of registration: 20230925 Granted publication date: 20160824 Pledgee: China Construction Bank Co.,Ltd. Xiushui sub branch Pledgor: Jiangxi Xiushuixianglushan Tungsten Industry Co.,Ltd. Registration number: Y2023980058963 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |