CN103114853A - Method for backfilling separately-recovered and sub-transported gangues of underground dirt band coal layer and complete equipment - Google Patents
Method for backfilling separately-recovered and sub-transported gangues of underground dirt band coal layer and complete equipment Download PDFInfo
- Publication number
- CN103114853A CN103114853A CN2013100501161A CN201310050116A CN103114853A CN 103114853 A CN103114853 A CN 103114853A CN 2013100501161 A CN2013100501161 A CN 2013100501161A CN 201310050116 A CN201310050116 A CN 201310050116A CN 103114853 A CN103114853 A CN 103114853A
- Authority
- CN
- China
- Prior art keywords
- coal
- conveyor
- elevating conveyor
- equipment
- reversing arrangement
- 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
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Structure Of Belt Conveyors (AREA)
Abstract
The invention discloses a method for backfilling separately-recovered and sub-transported gangues of an underground dirt band coal layer and complete equipment. The device comprises a front part scraper plate conveyor, wherein an output end of the front part scraper plate conveyor is provided with an external transportation reversed loader and a transportation belt; the transportation belt is provided with a reversing door; a far end reversed loader is arranged relatively to the reversing door of the transportation belt in a loading manner; a backhaul belt machine is arranged at an output end of the far end reversed loader; an output tail end of the backhaul belt machine is correspondingly provided with a backhaul reversed loader and a rear part conveyor for backfilling; an upper-layer coal layer, middle gangues and a lower-layer coal layer are adopted in sequence and the coal layers are transported to a well by a reversing device; the gangues are backhauled to a goaf, so that the mining rate of the coal layers is improved and the phenomenon of washing is avoided; and meanwhile, the upper and lower coal layers are transported to the well and the middle gangues are transported into an underground goaf so as to effectively avoid the pollution to an environment.
Description
Technical field
The present invention relates to a kind of coal mine fully-mechanized mining device for the coal dirt band and combine mining method.
Background technology
In recent years, along with the lasting rising of the national economic development to coal demand, many collieries under the premise that security is guaranteed, mine output has also obtained improving constantly, cause the development engineering amount of mine large, to produce cash many, anxiety has to a certain degree appearred in assistant conveyance, and a large amount of spoils enters that in coal, the washing of coal supply has brought white elephant.
In existing coal, the upper strata has all been taked to adopt in a lot of collieries of dirt band, leaves the exploitation method of layer behind, and coal resources have been caused huge waste.
Also have and two-layerly all exploit, but the traditional processing mode of downhole gangue is to be carried to the earth's surface by the down-hole stacking, this brings very large threat and harm to human ecological environment and condition, be mainly manifested in: appropriation of land; Contaminated environment; Harm humans safety.In addition, just at the hillock of spontaneous combustion, as run into the infiltration of rainwater, the rear air that is heated sharply expands, and can set off an explosion, and causes security incident.
This problem is as can not get effective solution, continues anxiety except meeting causes Mining Area, and mine service-life also will shorten greatly.This not only can cause the great wasting of resources to country, also will be to social concerns such as environmental protection.
As seen, the hillock that tradition ground discharge refuse mode produces to the pollution of environment with destroy seriously, the method that adopts downhole gangue directly to process can be turned bane into boon: eliminate the ground hillock, reduce and occupy the farmland, reduce the surface subsidence that atmosphere and environment pollution, elimination are caused because of coal mining.Simultaneously, the reasonable processing under waste shaft also can reduce barrier pillar and save coal resources as the underground structure supporter, can partly solve again or reduce surface settlement and the problem of subsiding.
Summary of the invention
For the lower floor's coal seam waste that solves dirt band coal seam in existing coal and the phenomenon that spoil pollutes, the invention provides method and a complete set of equipment of dirt band coal seam, a kind of down-hole separative production and separative delivery gangue refill, it can take respectively upper and lower two-layer coal seam and spoil layer, improved the coefficient of mining in coal seam, avoided the phenomenon of waste, simultaneously, can be transported to upper and lower coal seam aboveground and middle spoil is transported to underground goaf, effectively avoid the pollution to environment.
For achieving the above object, the technical solution adopted in the present invention is as follows:
The method of dirt band coal seam, a kind of down-hole separative production and separative delivery gangue refill,
Then coal seam in exploitation outputs to aboveground by upper fortune system upper coal seam;
Until the coal seam, upper strata carry complete after, the reversing arrangement in conversion in the fortune system; Spoil layer in the middle of exploitation is then through transporting spoil back goaf through the system of backhauling again after upper fortune system and reversing arrangement;
Until in the middle of the spoil layer carry complete after, the reversing arrangement in conversion in the fortune system; Then the lower coal seam of exploitation outputs to aboveground by upper fortune system lower coal seam.
Further, be provided with reversing arrangement on travelling belt:
A, adopt day-coal:
Open the reversing arrangement on equipment of conveyer, make equipment of conveyer carry towards the equipment of conveyer direction always;
Coal mining machine cut day-coal, with the coal cinder under taking through upper fortune system: front scraper conveyor, outward transport elevating conveyor, travelling belt, coal is transported to coal bunker, coal is transported to aboveground through the mine main conveying system;
B, adopt dirt band:
Coal-winning machine cuts day-coal and installs completely, and when there is no coal on the travelling belt of upper fortune system from the reversing arrangement to the work plane, the travelling belt reversing arrangement cuts out, and makes travelling belt carry towards backhauling system orientation under the effect of reversing arrangement:
Coal mining machine cut cash, the cash that falls through front scraper conveyor, outward transport elevating conveyor, travelling belt, arrive the spoil under taking the far-end elevating conveyor, backhaul conveyor, backhaul elevating conveyor, the running of rear portion conveyer after turning to, spoil is discharged into the goaf;
C, adopt lower floor's coal:
Coal-winning machine with middle dirt band cut install complete, and when there is no spoil on the equipment of conveyer belt of upper fortune system from the reversing arrangement to the work plane, the equipment of conveyer reversing arrangement is reopened, the coal mining machine cut loads a layer coal, with the coal cinder under taking through upper fortune system: front scraper conveyor, outward transport elevating conveyor, travelling belt, coal is transported to coal bunker, coal is transported to aboveground through the mine main conveying system.
Further, be provided with broken process in the transportation of outward transport elevating conveyor.
Further, be provided with broken process in the transportation of far-end elevating conveyor.
dirt band coal seam, a kind of down-hole separative production and separative delivery gangue refill a complete set of equipment, the front scraper conveyor that comprises carrying coal-winning machine exploitation junk, the unloading end of front scraper conveyor is provided with crossheading with transporting outward elevating conveyor, equipment of conveyer, equipment of conveyer is provided with realizes on coal that fortune and spoil backhaul the reversing arrangement of direction switching, unloading place of respective transfer conveyor reversing arrangement spoil is provided with the far-end elevating conveyor, the unloading end of far-end elevating conveyor is provided with and backhauls conveyor, the unloading end that backhauls conveyor is provided with and backhauls elevating conveyor, the unloading end that spoil backhauls elevating conveyor is provided with the gangue refill rear portion conveyer that is suspended on filling support rear portion.
Further, described reversing arrangement is the commutation door.
Further, described outward transport elevating conveyor is provided with the one-level crushing engine.
Further, described far-end elevating conveyor is provided with secondary breaker.
Further, described front scraper conveyor, the outward transport elevating conveyor, travelling belt, far-end elevating conveyor, backhaul conveyor, the rear portion conveyer forms back-shaped transit route.
Operating principle of the present invention and beneficial effect show:
The present invention is by arranging the twice passage, and realizes the change of both throughput directions by a body is set.
The coal mining transfer passage: front scraper conveyor, the output of front scraper conveyor are provided with outward transport elevating conveyor, travelling belt successively;
The spoil transfer passage: front scraper conveyor, the output of front scraper conveyor are provided with successively outward transport elevating conveyor, travelling belt, far-end elevating conveyor, backhaul conveyor, backhaul elevating conveyor and backfill rear portion conveyer.
By can realize coal seam, up and down and spoil being exploited respectively and being changed corresponding direction with upper channel, with the colliery be transported to aboveground, spoil is transported to the goaf.
The present invention is not only applicable to " dirt band in the high seam coal " and mines, and the exploitation of two girdles that go for apart having a contest fully.
This shows, the present invention has realized high-efficiency mining, has alleviated the service hoisting of mine, and the spoil that the down-hole produces directly can be processed, and eliminates spoil ground and piles up the harm that human survival and living environment are brought.
Process spoil by present technique, can alleviate to greatest extent surface subsidence, improve the economic benefit of mine, the sustainable development in colliery is had great realistic meaning; Simultaneously, can also solve the problems such as China's spoil down-hole treatment, alleviation mine service hoisting anxiety, start a new technological approaches, its scientific and engineering Research Significance is very great.
With the processing of mine spoil, exploitation " dirt band in coal ", two-layer ultra-thin coal seam primary recovery when 0.5～2.0m, the coal mining general arrangement is included on the protection earth's surface in, realizes green exploitation and the sustainable development of colliery resource and environment;
In sum, new coal mechanized equipment share limited public affairs in Shandong are based on the actual conditions of " dirt band in coal ", two-layer ultra-thin coal seam primary recovery when 0.5～2.0m, started the new situation of fully mechanized coal face bastard coal separative production and separative delivery gangue refill coal-mining technique, improved " dirt band in coal " the rate of extraction, reduced the destruction of coal production to earth's surface and ecological environment, reformed Coal Mining Technology, guided the direction of coal mining enterprise's realization " green ".
Description of drawings
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, the accompanying drawing that the following describes is only some embodiment that put down in writing in the application, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing;
Fig. 1 is the device connection diagram of invention.
The specific embodiment
The below is described in detail the invention with the specific embodiment:
In order to make those skilled in the art person understand better technical scheme in the application, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only the application's part embodiment, rather than whole embodiment.Based on the embodiment in the application, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all should belong to the scope of the application's protection.
As shown in Figure 1, a kind of coal mine fully-mechanized mining device: comprise coal-winning machine, the front scraper conveyor 1 of the exploitation thing of carrying coal-winning machine, the output of front scraper conveyor 1 is provided with outward transport elevating conveyor 2, equipment of conveyer 3 successively, equipment of conveyer 3 is provided with commutation door 4, the corresponding carrying in travelling belt commutation door 4 places is provided with far-end elevating conveyor 5, and the output of far-end elevating conveyor is provided with and backhauls conveyor 6, and the output end correspondence of backhauling conveyor 6 is provided with backhauls elevating conveyor 7 and backfill rear portion conveyer 8.
For guaranteeing the transportation effect and being convenient to transportation: the leading portion of the carrier aircraft that turns round outside or rear end are provided with one-level crushing engine 9; Be provided with two-stage crushing device 10 on the far-end elevating conveyor.
The present embodiment middle front part conveyer is perpendicular to outside elevating conveyor, and the far-end elevating conveyor backhauls conveyor perpendicular to the outward transport elevating conveyor again perpendicular to the outward transport elevating conveyor, has so just formed a back-shaped route, is convenient to spoil is carried out backfill.
During work,
A, adopt day-coal:
Open the commutation door on equipment of conveyer, make equipment of conveyer carry towards the equipment of conveyer direction always;
Coal mining machine cut day-coal, with the coal cinder under taking through upper fortune system: front scraper conveyor, outward transport elevating conveyor, travelling belt, coal is transported to coal bunker, coal is transported to aboveground through the mine main conveying system;
B, adopt dirt band:
Coal-winning machine cuts day-coal and installs completely, and when there is no coal from the commutation door to work plane on the travelling belt of upper fortune system, travelling belt commutation door is closed, and makes travelling belt carry towards far-end elevating conveyor direction under the effect of commutation door;
Coal mining machine cut cash, the cash that falls, with the spoil under taking through upper fortune system: front scraper conveyor, outward transport elevating conveyor, travelling belt, far-end elevating conveyor, backhaul conveyor, backhaul elevating conveyor, the running of rear portion conveyer, spoil is discharged into the goaf;
C, adopt lower floor's coal:
Coal-winning machine with middle dirt band cut install complete, and when there is no spoil from the commutation door to work plane on the ribbon conveyer belt of upper fortune system, ribbon conveyer commutation door is reopened, the coal mining machine cut loads a layer coal, with the coal cinder under taking through upper fortune system: front scraper conveyor, outward transport elevating conveyor, travelling belt, coal is transported to coal bunker, coal is transported to aboveground through the mine main conveying system.
Accordingly, be provided with broken process in the transportation of outward transport elevating conveyor; Be provided with broken process in the transportation of far-end elevating conveyor.
The above is only the application's preferred embodiment, makes those skilled in the art can understand or realize the application.Multiple modification to these embodiment will be apparent to one skilled in the art, and General Principle as defined herein can be in the situation that do not break away from the application's spirit or scope, realization in other embodiments.Therefore, the application will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. the method for dirt band coal seam, down-hole separative production and separative delivery gangue refill is characterized in that:
Then coal seam in exploitation outputs to aboveground by upper fortune system upper coal seam;
Until the coal seam, upper strata carry complete after, the reversing arrangement in conversion in the fortune system; Spoil layer in the middle of exploitation is then through transporting spoil back goaf through the system of backhauling again after upper fortune system and reversing arrangement;
Until in the middle of the spoil layer carry complete after, the reversing arrangement in conversion in the fortune system; Then the lower coal seam of exploitation outputs to aboveground by upper fortune system lower coal seam.
2. the method for dirt band coal seam, down-hole according to claim 1 separative production and separative delivery gangue refill is characterized in that: be provided with reversing arrangement on travelling belt:
A, adopt day-coal:
Open the reversing arrangement on equipment of conveyer, make equipment of conveyer carry towards the equipment of conveyer direction always;
Coal mining machine cut day-coal, with the coal cinder under taking through upper fortune system: front scraper conveyor, outward transport elevating conveyor, travelling belt, coal is transported to coal bunker, coal is transported to aboveground through the mine main conveying system;
B, adopt dirt band:
Coal-winning machine cuts day-coal and installs completely, and when there is no coal on the travelling belt of upper fortune system from the reversing arrangement to the work plane, the travelling belt reversing arrangement cuts out, and makes travelling belt carry towards backhauling system orientation under the effect of reversing arrangement:
Coal mining machine cut cash, the cash that falls through front scraper conveyor, outward transport elevating conveyor, travelling belt, arrive the spoil under taking the far-end elevating conveyor, backhaul conveyor, backhaul elevating conveyor, the running of rear portion conveyer after turning to, spoil is discharged into the goaf;
C, adopt lower floor's coal:
Coal-winning machine with middle dirt band cut install complete, and when there is no spoil on the equipment of conveyer belt of upper fortune system from the reversing arrangement to the work plane, the equipment of conveyer reversing arrangement is reopened, the coal mining machine cut loads a layer coal, with the coal cinder under taking through upper fortune system: front scraper conveyor, outward transport elevating conveyor, travelling belt, coal is transported to coal bunker, coal is transported to aboveground through the mine main conveying system.
3. coal mine fully-mechanized mining method according to claim 2, is characterized in that: be provided with broken process in the transportation of outward transport elevating conveyor.
4. coal mine fully-mechanized mining method according to claim 2, is characterized in that: be provided with broken process in the transportation of far-end elevating conveyor.
5. dirt band coal seam, down-hole separative production and separative delivery gangue refill a complete set of equipment, it is characterized in that: the front scraper conveyor that comprises carrying coal-winning machine exploitation junk, the unloading end of front scraper conveyor is provided with crossheading with transporting outward elevating conveyor, equipment of conveyer, equipment of conveyer is provided with realizes on coal that fortune and spoil backhaul the reversing arrangement of direction switching, unloading place of respective transfer conveyor reversing arrangement spoil is provided with the far-end elevating conveyor, the unloading end of far-end elevating conveyor is provided with and backhauls conveyor, the unloading end that backhauls conveyor is provided with and backhauls elevating conveyor, the unloading end that spoil backhauls elevating conveyor is provided with the gangue refill rear portion conveyer that is suspended on filling support rear portion.
6. dirt band coal seam, down-hole according to claim 5 separative production and separative delivery gangue refill a complete set of equipment is characterized in that: described reversing arrangement is the commutation door.
7. dirt band coal seam, down-hole according to claim 5 separative production and separative delivery gangue refill a complete set of equipment is characterized in that: described outward transport elevating conveyor be provided with the one-level crushing engine.
8. dirt band coal seam, down-hole according to claim 5 separative production and separative delivery gangue refill a complete set of equipment, it is characterized in that: described far-end elevating conveyor is provided with secondary breaker.
9. dirt band coal seam, down-hole according to claim 5 separative production and separative delivery gangue refill a complete set of equipment is characterized in that: described front scraper conveyor, outward transport elevating conveyor, travelling belt, far-end elevating conveyor, backhaul conveyor, the rear portion conveyer forms back-shaped transit route.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100501161A CN103114853A (en) | 2013-02-08 | 2013-02-08 | Method for backfilling separately-recovered and sub-transported gangues of underground dirt band coal layer and complete equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100501161A CN103114853A (en) | 2013-02-08 | 2013-02-08 | Method for backfilling separately-recovered and sub-transported gangues of underground dirt band coal layer and complete equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103114853A true CN103114853A (en) | 2013-05-22 |
Family
ID=48413284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100501161A Pending CN103114853A (en) | 2013-02-08 | 2013-02-08 | Method for backfilling separately-recovered and sub-transported gangues of underground dirt band coal layer and complete equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103114853A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939139A (en) * | 2014-04-25 | 2014-07-23 | 中国矿业大学 | Equipment matching method for solid-filling coal face of coal mine |
| CN104061016A (en) * | 2014-06-23 | 2014-09-24 | 中国矿业大学 | Thin-seam five-drill drilling-type coal mining machine filling equipment and method |
| CN104653182A (en) * | 2014-11-07 | 2015-05-27 | 山东科技大学 | Coal mining method for coal and gangue separate recovery of coal seam with dirt band |
| CN110630322A (en) * | 2019-10-28 | 2019-12-31 | 陕西开拓建筑科技有限公司 | Thin coal seam coal and gangue separate mining and separate transportation filling mining system and mining method |
| CN111535811A (en) * | 2020-04-28 | 2020-08-14 | 四川省洪雅青衣江元明粉有限公司 | Glauberite ore roadway tunneling process |
| CN112676188A (en) * | 2020-12-29 | 2021-04-20 | 山西三元煤业股份有限公司 | Coal and gangue separation and conveying system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3331271A1 (en) * | 1983-08-30 | 1985-03-14 | Dowty Meco Ltd., Worcester | Mining of minerals |
| EP0184720A1 (en) * | 1984-11-28 | 1986-06-18 | Potash Corporation Of Saskatchewan Mining Limited | Underground mining method for mineral deposits |
| CN101586460A (en) * | 2009-06-02 | 2009-11-25 | 中国矿业大学 | Coal mining solid filling method |
| CN102305069A (en) * | 2011-05-17 | 2012-01-04 | 山东新煤机械有限公司 | Technology and equipment for separating coal and gangue and refilling gangue |
| CN203161219U (en) * | 2013-02-08 | 2013-08-28 | 山东新煤机械装备股份有限公司 | Complete equipment for underground dirt band coal layer mining and transporting separated gangue backfilling method |
-
2013
- 2013-02-08 CN CN2013100501161A patent/CN103114853A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3331271A1 (en) * | 1983-08-30 | 1985-03-14 | Dowty Meco Ltd., Worcester | Mining of minerals |
| EP0184720A1 (en) * | 1984-11-28 | 1986-06-18 | Potash Corporation Of Saskatchewan Mining Limited | Underground mining method for mineral deposits |
| CN101586460A (en) * | 2009-06-02 | 2009-11-25 | 中国矿业大学 | Coal mining solid filling method |
| CN102305069A (en) * | 2011-05-17 | 2012-01-04 | 山东新煤机械有限公司 | Technology and equipment for separating coal and gangue and refilling gangue |
| WO2012155531A1 (en) * | 2011-05-17 | 2012-11-22 | 山东新煤机械设备股份有限公司 | Technology and equipment for separating coal and gangue and refilling gangue. |
| CN203161219U (en) * | 2013-02-08 | 2013-08-28 | 山东新煤机械装备股份有限公司 | Complete equipment for underground dirt band coal layer mining and transporting separated gangue backfilling method |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939139A (en) * | 2014-04-25 | 2014-07-23 | 中国矿业大学 | Equipment matching method for solid-filling coal face of coal mine |
| CN103939139B (en) * | 2014-04-25 | 2016-01-06 | 中国矿业大学 | A kind of colliery solid filling coal-face coordinative composition of equipments method |
| CN104061016A (en) * | 2014-06-23 | 2014-09-24 | 中国矿业大学 | Thin-seam five-drill drilling-type coal mining machine filling equipment and method |
| CN104653182A (en) * | 2014-11-07 | 2015-05-27 | 山东科技大学 | Coal mining method for coal and gangue separate recovery of coal seam with dirt band |
| CN110630322A (en) * | 2019-10-28 | 2019-12-31 | 陕西开拓建筑科技有限公司 | Thin coal seam coal and gangue separate mining and separate transportation filling mining system and mining method |
| CN111535811A (en) * | 2020-04-28 | 2020-08-14 | 四川省洪雅青衣江元明粉有限公司 | Glauberite ore roadway tunneling process |
| CN112676188A (en) * | 2020-12-29 | 2021-04-20 | 山西三元煤业股份有限公司 | Coal and gangue separation and conveying system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103114853A (en) | Method for backfilling separately-recovered and sub-transported gangues of underground dirt band coal layer and complete equipment | |
| CN110593874B (en) | Full-filling method for strong and weak full mining of coal mine | |
| CN203161219U (en) | Complete equipment for underground dirt band coal layer mining and transporting separated gangue backfilling method | |
| CN1963149B (en) | Mining method for replacement of banded coal under building by waste rock | |
| CN102996131B (en) | Solid-filling coal mining method with two pre-excavating tunnels for advancing | |
| CN102155260B (en) | Method for filling heavy-pitch coal bed goaf | |
| CN102889084B (en) | Continuous mining technique for thin coal layer of opencast coal mine | |
| CN104533429A (en) | Double-roadway combining speedy drivage waste rock exhaust system and method | |
| CN101899976A (en) | Continuous coal mining process method of open-pit coal mine | |
| CN103821515A (en) | Double-unit face filling and mining technology | |
| CN102305069A (en) | Technology and equipment for separating coal and gangue and refilling gangue | |
| CN109882239B (en) | Open-pit end slope coal-pressing radial filling mining method | |
| CN105421198B (en) | A kind of method that open coal mine builds ramp | |
| CN102748071B (en) | Underground backfilling and transporting method for ground gangue of coal mine | |
| CN102877848B (en) | Method for performing coal mining and gangue cementation stripe filling simultaneously | |
| CN202266260U (en) | Technical equipment for separating coal from gangue and backfilling gangue | |
| CN102865099B (en) | Under-building, under-railway and under-water mining filling process | |
| CN205894140U (en) | Colliery material loading forklift | |
| CN108301833A (en) | The full negative pressure shortwall method of collecting coal by the means of filling | |
| CN1952349A (en) | Mining method for replacement of pressed coal under village by waste rock | |
| CN105327766A (en) | Underground gangue transfer and crushing system | |
| CN113027460A (en) | Coal and coal series symbiotic bauxite coordinated mining system and downward exploitation extension method thereof | |
| CN101338675A (en) | Open-cast side shrouded beneficial mineral open well combined mining method | |
| CN103939132B (en) | A kind of mineral deposit underground mining transportation resources of continuous and automatic | |
| CN104481533A (en) | Underground mine and ore lifting 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 | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130522 |