CN106014415A - Air cushion type space-reserved drift and fill type mining device and method - Google Patents

Air cushion type space-reserved drift and fill type mining device and method Download PDF

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Publication number
CN106014415A
CN106014415A CN201610533947.8A CN201610533947A CN106014415A CN 106014415 A CN106014415 A CN 106014415A CN 201610533947 A CN201610533947 A CN 201610533947A CN 106014415 A CN106014415 A CN 106014415A
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CN
China
Prior art keywords
air
air cushion
cushion
mining
route
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CN201610533947.8A
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Chinese (zh)
Inventor
韩斌
韩思愉
于少峰
常晓娜
刘超
郑禄璟
常宝孟
李涛
赵金田
范玉赟
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北京科技大学
北京恩菲麦特矿冶技术服务有限公司
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Priority to CN201610533947.8A priority Critical patent/CN106014415A/en
Publication of CN106014415A publication Critical patent/CN106014415A/en

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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C41/00Methods of underground or surface mining; Layouts therefor
    • E21C41/16Methods of underground mining; Layouts therefor
    • E21C41/22Methods of underground mining; Layouts therefor for ores, e.g. mining placers
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00Methods or devices for placing filling-up materials in underground workings

Abstract

The invention provides an air cushion type space-reserved drift and fill type mining device and method and belongs to the technical field of mine cut and fill mining. The device comprises an air cushion, a fixing mechanism and auxiliary equipment. The air cushion comprises air bags, inflating and deflating valves, safety valves and the like. The air cushion is fixed to ore body drift and fill road sides by the fixing mechanism through fixing ropes, and the air cushion is inflated through the auxiliary equipment. In the using process of the device, the air cushion is erected on the side close to an ore about every 10 m before filling of a drift and fill path is carried out, multiple air cushions are consecutively erected along the total length part in the axial direction of the drift and fill path, and then the drift and fill path is filled. When the device and the method are used for mining adjacent mining drift and fill paths, the air cushions can be recycled first, the space reserved for the air cushions serves as a blasting free surface, and mining blasting is carried out in a row-by-row lateral blasting mode; the blasting efficiency and mining efficiency can be greatly improved, consumption of explosives can be greatly reduced, holes can be reduced, the total time of total mining circulation can be prolonged, the capacity of total mining circulation can be improved, and the safety of recovery work is promoted.

Description

The route type mining apparatus of a kind of air-cushion type headspace and method

Technical field

The present invention relates to filling in mine production technique field, particularly relate to a kind of air-cushion type and leave a blank in advance Between route type mining apparatus and method.

Background technology

Access back-filling method is that the mode using digging laneway reclaims ore body, and stope mining is complete Afterwards tunnel is carried out top tight filling to control ore deposit rock around.Owing to route section is the most little, top Span of slab is little, can effectively safeguard the stability of stope, it is ensured that stoping operation safety, and route cloth Putting flexibly, can be used for reclaiming the Varied ore deposit under bad ore and rock condition, impoverishment rate in mining is low, return Yield is high.But because stope is less, complex process, labor intensity is big, and production efficiency is low, Stope integrated production capacity is relatively small, the method be only applicable to rock pole, ore deposit built on the sand, Ore product The ore body that position is high, economic worth is big.

Since the seventies in last century, admission passage filling mining technique is at China's non-ferrous metal, Huang Gold mine mountain obtains extensively application.Different according to stopping sequence, admission passage filling method can be divided into lower to entering Road filling method and Upward drift.To admission passage filling method layer-by-layer mining from top to bottom under wherein, The obturator of higher slice is protected in obturator as the artificial roof of lower leaf route, personnel and equipment Protect lower operation.On to Drift stoping rule layer-by-layer mining from bottom to top, the obturator of lower leaf be The route base plate of this separate zone production.Conventional extracting drift form of fracture has square, rectangle etc., Process for stoping includes that rock drilling, powder charge, explosion, ventilation, ore removal, supporting are (to entering on if Dig up mine in road), after this drift stoping terminates, set up filling pipe, build filling counterfort by laying bricks or stones, and implement Filling.

As a example by Jinchuan deposit Ⅱ district, mining technology is described below: from vertical to for: exploitation The high 100m of section, a stage casing is divided into 5 segmentations, and each segmentation is divided into again 5 layerings. For horizontal direction, owing to ore body across pitch is about 800m, therefore ore body is pressed by across pitch Every 100m divides a panel, totally 8 panels, is divided into again some exploiting fields in a panel, Dig up mine in route mode in exploiting field.The general a length of 60m of route, section be wide × high= 5m×4m.Adopt filling immediately after a route, use the back production pattern adopting every, when After complete all ore body of layer of back production, then the ore body of its next layering of back production.

As a example by Jinchuan Nickel Mine, route type mining technology existing problems are as follows: (1) mining technology Similar tunnelling, the only one of which scope of freedom, bigger by surrounding rock body or obturator during explosion Clipping power, each work surface (20m2) the big gun number of perforations that requires typically more than 50, and Explosive specific charge is high, blasting efficiency is low, mining efficiency is low, and current explosion drilling depth is only 2.2-2.5m, Blasting efficiency is about about 80%, and this is to cause low one of them of route type mining capacity Key reason.(2) ore body and adjacent filling route obturator are in close contact, and explosion can be to filling Body damages, and obturator is mixed into Ore and causes ore dilution, and comprehensive benefit is poor;(3) due to The clipping power explosive of sc greatly, causes explosion relatively big to the destruction of obturator, notable shadow Ring the stability of obturator.(4) the part Ore of contact obturator sometimes can not be by under explosion Come, cause ore losses.

Summary of the invention

In order to improve the shortcoming and defect that existing Drift stoping technique exists, the present invention provides a kind of The route type mining apparatus of air-cushion type headspace and method.

The technical scheme is that, with static line, air cushion is fixed in advance route to be filled In (near ore body side to be exploited), this route of filling afterwards.Special instruction, this gas Cushion mining methods can be used for lower to or upward stoping drift and cemented filling mining, simply under to route The top of mining codes, base plate are respectively obturator and ore body, and Upward drift is the most contrary.? When exploiting adjacent route, the space that the aforementioned air cushion reserved in obturator is formed can be as this Explosion free space during adjacent route ore body back production, can greatly improve blasting efficiency, and drops Low blasting cost.

This device includes air cushion, fixed mechanism and auxiliary equipment, and air cushion includes air bag, inflation/deflation Valve, relief valve and buckle, fixed mechanism includes static line, card ball and setscrew, auxiliary dress For including air compressor machine, connecting tube and eyelid covering;Arrange on each air bag an Air filling and discharging valves, one Relief valve and four buckles, air cushion is by snapping connection on static line, and card ball is arranged on fixing On rope, static line is fixed on ore body route lateral wall by setscrew, and air compressor machine passes through connecting tube For airbag aeration, eyelid covering covers on air cushion.

Wherein, air bag is flexible gas impermeable material, it is possible to meet filling slurry in whole filling To pressure requirements produced by it in journey;Inside air bag has secretly set lacing wire or by side by side along thickness Gas column composition, it is ensured that air cushion in the deflated condition, can keep design profile;Air cushion is high Degree approximates with route height, and length is installed to facilitate, transported, and thickness meets explosion freely The requirement in space and be easy to construct.Buckle is set on air cushion, it is simple to be coupled with fixing On rope;The high-pressure blast that air compressor machine provides can be filled with air bag by Air filling and discharging valves, it is also possible to by air bag Air discharge;Relief valve is check valve, when intracapsular pressure exceedes setting value, automatically opens Open, until pressure is down to during setting value automatically close;On static line at a certain distance, install Having card ball, the diameter of this card ball is more than air bag block button hole diameter, when being used for pulling static line, and can So that air cushion is hauled out together, it is achieved the recycling of air cushion.

Air filling and discharging valves is made up of charge valve, the only band of gas, only vent plug, valve body, and its effect is to fill Complete before filling out to inflate operation, release the air in air bag when reclaiming air bag.Gas charging valve structure with Inflating bicycle tires structure is similar to, and is stuck on charge valve the inflation termination of air compressor machine during inflation, Gases at high pressure enter air bag by charge valve, valve body, the only band of gas, and only the band of gas is gum elastic material Matter, gases at high pressure can enter air bag, but the gas of air bag cannot leak from charge valve;Only gas The effect of plug is in air bag after inflation, it is possible to stop the leaking of gas, but due to only vent plug with put Gas rope is connected, and when needs reclaim air cushion, pulls venting rope, i.e. can be by the gas in air bag Discharge;Relief valve is check valve, and the effect of relief valve is that the pressure once injected exceedes its limit During bearing pressure, this relief valve starts pressure release, prevents owing to the various accidents such as equipment fault cause The unexpected breakage of cystidium.Eyelid covering be prevent filling during, filling slurry pour in air cushion it Between, increase the recovery difficult of air cushion.

This device uses gas column to be previously placed in stope to be filled, then this stope is carried out filling, The headspace formed after stope filling with preset material, as during adjacent mining blasting Explosion free space;The concrete grammar related to is as follows:

(1) air cushion is set up: when route exploitation is complete, before setting up filling counterfort, at route Near the top of body to be dug up mine, base plate, every about 10m is one group of air cushion, more than one gas Pad is one group, often group air cushion single static line and venting rope, by the card of single air cushion corner Button is fixed on upper and lower two static lines that (height of each air cushion is similar to route height, wide Spend general about 1m, thickness about 0.2m);And by the Air filling and discharging valves of each air cushion and venting rope It is connected.Outside air cushion, cover eyelid covering again, air cushion is covered, afterwards to airbag aeration, completes This group air cushion is installed.Afterwards according to the length of route, it is respectively mounted the air cushion of other groups and covers Eyelid covering, and build filling counterfort by laying bricks or stones and set up filling pipe, complete filling preparation work

(2) filling route: route is implemented filling by filling process routinely;

(3) air cushion is reclaimed: after the route of filling reaches the intended obturator maintenance time limit, Exploiting adjacent Mining entrance, route sinking and blasting forms driving face, exposes adjacent filling Be filled into the air cushion that road is pre-buried, now pull venting rope, then the cone being connected with venting rope stops gas Plug is pulled out, and completes first group of air cushion venting;Pull afterwards be fixed on tunnel top, the two of underwall Root static line, now static line shakes off the constraint being fixed on setscrew by thin tied silk, to dragging Drag direction to move, the air cushion that dragging is fixed thereon by the card ball being installed on static line, and will This group air cushion successfully reclaims.When the neighbouring position of driving to second group of air bag of distance, can expose The venting rope of second group of air bag and static line, now according still further to above-mentioned steps, i.e. can reclaim Two groups of static lines, venting are restricted and air cushion, and so on, complete the recovery of all air cushions;

(4) Drift stoping: traditional Drift stoping, typically at route center arrangement snubber, But this method route explosion can make full use of the scope of freedom that air cushion is formed, according to the side of lateral caving Formula arranges big gun hole, carries out blasting mining by blasting cap initiation order;

(5) after treating this drift stoping, according still further to the step of above-mentioned () to (four) Carry out the exploitation of other routes.

Having the beneficial effect that of the technique scheme of the present invention:

The method not only has route type cemented filling method route flexible arrangement, mining is reclaimed Rate is high, be applicable to the advantage of complicated broken noble metal ore body cemented filling mining, and due in advance Stay good explosion free space, also overcome traditional route type cemented filling method chisel Rock workload is big, explosion and mining efficiency is low, production capacity is little, integrated cost is high disadvantage. Its advantage is specific as follows:

(1) employing air bag is as the reserved explosion free space of adjacent route, can be significantly Improve blasting efficiency and mining efficiency;(2) big due to explosion free space, the clipping power of explosion Reduce, explosive consumption can be greatly lowered;(3) increase substantially due to explosion free space, The layout of borehole can be reduced, be also beneficial to reduce drill steel, the consumption of bore bit, when shortening rock drilling Between, and improve the total time that total mining circulates, improve production capacity.(4) due to the existence of air bag, Ore body and obturator are isolated, and owing to explosion is few to the destruction of obturator, it is possible to reduce filling Body is mixed into, due to explosion, the mining dilution that Ore causes;(5) additionally due to the minimizing of explosive payload and Decrease the destruction to obturator, it is also possible to effectively safeguard the stability of obturator, be conducive to adopting The safety of field stoping operation.

Accompanying drawing explanation

Fig. 1 is that the route type mining apparatus Mining entrance of the air-cushion type headspace of the present invention is indulged Schematic diagram arranged by section air cushion;

Fig. 2 is that Mining entrance vertical section static line arranges schematic diagram;

Fig. 3 is air cushion mechanism front view;

Fig. 4 is air cushion structure left view;

Fig. 5 is Air filling and discharging valves structural representation;

Fig. 6 is view before the filling of Mining entrance vertical section;

Fig. 7 is the view that Mining entrance vertical section completes that first group of air cushion reclaims;

Fig. 8 is the Mining entrance explosion scope of freedom schematic diagram that air cushion is reserved;

Fig. 9 is the Mining entrance blasting sequence schematic diagram of air-cushion type headspace.

Wherein: 1-static line;2-obturator;3-ore body;4-air bag;5-Air filling and discharging valves;6- Relief valve;7-buckle;8-charge valve;9-stops vent plug;10-stops the band of gas;11-valve body;12-is put Gas rope;13-eyelid covering;14-filling counterfort;15-driving face;The 16-scope of freedom;17-big gun hole; 18-blasting cap initiation order.

Detailed description of the invention

For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, below To be described in detail in conjunction with the drawings and the specific embodiments.

The present invention is directed to the shortcoming and defect that existing Drift stoping technique exists, it is provided that Yi Zhongqi The route type mining apparatus of cushion headspace and method.

As depicted in figs. 1 and 2, this device includes air cushion, fixed mechanism and auxiliary equipment, as Shown in Fig. 3 and Fig. 4, air cushion includes air bag 4, Air filling and discharging valves 5, relief valve 6 and buckle 7, Fixed mechanism includes static line 1, card ball and setscrew, and auxiliary equipment includes air compressor machine, company Adapter and eyelid covering 13;5, relief valve 6 and of one Air filling and discharging valves is set on each air bag 4 Four buckles 7, air cushion is connected on static line 1 by buckle 7, and card ball is arranged on static line On 1, static line 1 is fixed on ore body 3 route lateral wall by setscrew, and air compressor machine is by even Adapter is inflated for air bag 4, and eyelid covering 13 covers on air cushion.

As it is shown in figure 5, Air filling and discharging valves 5 includes charge valve 8, only vent plug 9, the only band of gas 10 and Valve body 11, only the band of gas 10 is elastomeric material, and only vent plug 9 inserts valve body 11, only vent plug Venting rope 12 is connected outside 9.

It is explained below in conjunction with specific embodiment.

In implementation process, air bag 4 material is butyl rubber or other flexible gas impermeable materials, thick Degree is about 5mm, and the pressure that can bear is more than 0.12MPa, is fully able to meet filling Slip in whole stowing operation to pressure requirements produced by it;Air bag 4 is internal dark along thickness It is provided with lacing wire, it is ensured that air cushion in the deflated condition, can keep the profile of design;Gas pad height Approximately the same with route height, length is installed to facilitate, is transported, thickness about 200mm. As a example by Jinchuan deposit Ⅱ, route specification (wide × high) is 5m × 4m, then air cushion high × long × Thickness is 4m × 2m × 0.2m, uses the advantage of single air cushion composition air cushion curtain to be: single gas If pad breakage, it is not result in the inefficacy of whole other air cushions of route;Different length according to route Degree, can freely regulate the number of air cushion;Hang air cushion to static line 1 (diameter can use 3mm) On device be four buckles 7, be respectively arranged at four angles of air cushion, air cushion to be fixed upper, When lower two static lines 1 are set up in route lateral wall, aforementioned four buckle 7 is stuck in this two On root static line 1;Air filling and discharging valves 5 is plastic material valve, and wherein charge valve 8 is similar to The mechanism of inflating bicycle tires, can by air compressor machine and pipeline thereof and connected clamping nozzle with Charge valve 8 is connected and implements inflation, and only the band of gas 10 has air flow in one direction function, inflation/deflation Being designed with the only vent plug 9 of a conical structure on valve 5, only vent plug 9 other end is connected to put On gas rope 12;Use screw joining manner between this Air filling and discharging valves 5 and air bag 4, be beneficial to Maintenance;Relief valve 6 is check valve, when in air bag 4, pressure is more than 0.12MPa, automatically opens Opening, pressure is down to below 0.10MPa, automatically closes, and uses the structure of conventional security valve, it And use screw joining manner between air bag 4;

Air cushion fixed mechanism core be two near ore body 3 sides exploit, be placed in tunnel push up, Base plate vicinity, the static line 1 axially laid along tunnel, the length of every static line 1 about 12m Left and right, every 0.5m on static line 1, is provided with card ball, and the diameter of this card ball is buckle 7 More than 3 times (when being used for pulling static line 1, air bag 4 can be hauled out together) of bore dia, The setscrew of diameter 6-8mm is installed, by thin tied silk by static line 1 with swollen at tunnel lateral wall Swollen screw connects, it is desirable to the firmness of colligation static line 1, it is possible to carrying is suspended over gas The weight of pad, in stowing operation, air cushion is unlikely to be rushed at it by slip, fixes simultaneously Connection between rope 1 and setscrew also unsuitable tension, when needs reclaim air cushion, firmly drags Drag upper and lower two static lines 1, the tied silk constraint between static line 1 and setscrew can be shaken off, Air cushion is hauled out;The specification of air compressor machine and connecting tube should match with Air filling and discharging valves 5, air compressor machine, Air compressor machine can use the air compressor machine of C20 (DLT0206) type;The eyelid covering 13 covering air cushion uses Inexpensive plastic, during its objective is to prevent filling, filling slurry pours between air cushion, Increase the recovery difficult of air cushion.

What this device used concretely comprises the following steps:

(1) air cushion is set up: when route exploitation is complete, before setting up filling counterfort, will be every 10 air cushions are divided into one group, such as the route of long 50m are divided into 5 groups, and often group air cushion is single Only static line 1 and the venting rope 12 of air cushion, the purpose of do so is in order to along with driving Propelling, progressively reclaim air cushion, it is also possible to reduce reclaim air cushion difficulty;Treat route ore body 3 Back production is complete, after completing the preparation before general filling (before building barricade by laying bricks or stones), every 10m Left and right, route near top, base plate position install setscrew, by hang air cushion upper, Lower two static lines 1 are fixed on setscrew by tied silk respectively;Buckle by air cushion corner 7 are stuck on upper and lower static line 1, mutually can not have space between air cushion;By each gas Only vent plug 9 line of pad is connected on venting rope 12, and it is solid near one end of route entrance On the static line 1 hanging air cushion;Air cushion lays plastic skin 13;To each gas Capsule 4 is inflated, and when reaching predetermined 0.1MPa, stops inflation.Afterwards according to the length of route, It is respectively mounted air cushions of other groups and covers eyelid covering 13, and building filling counterfort 14 by laying bricks or stones and erection is filled Fill out pipe, complete filling preparation work (see Fig. 6);

(2) filling route: after air cushion sets up, sets up filling counterfort 14, routinely Route is implemented filling by filling process;

(3) air cushion is reclaimed: treat that the route of filling reaches the intended obturator 2 maintenance time limit After, exploit adjacent Mining entrance, route sinking and blasting forms driving face 15, discloses Go out the air cushion that adjacent filling route is pre-buried, now pull venting rope 12, then with venting rope 12 phases Cone only vent plug 9 even is pulled out, and completes first group of air cushion venting;Pull afterwards and be fixed on Top, tunnel, two static lines 1 of underwall, now static line 1 is shaken off and is fixed on swollen by thin tied silk Constraint on swollen screw, moves to drag direction, and the card ball being installed on static line 1 will drag The air cushion being fixed thereon, and this group air cushion is successfully reclaimed (see Fig. 7).Treat driving to away from When the position of second group of air cushion 3-5m, the venting rope 12 of second group of air cushion can be exposed and fix Rope 1, now according still further to above-mentioned steps, i.e. can reclaim second group of static line 1, venting rope 12 And air cushion, and so on, complete the recovery of all air cushions;

(4) Drift stoping: traditional Drift stoping, typically at route center arrangement snubber, But this method route explosion can make full use of the scope of freedom 16 (see Fig. 8) (Fig. 7 that air cushion is formed The Mining entrance explosion scope of freedom schematic diagram that air cushion is reserved), arrange according to the mode of lateral caving Big gun hole 17, blasting cap initiation order 18 as shown in Figure 9 carries out blasting mining, uses 3.5m Big gun hole length, the demolition effect of more than 95% can be reached.Simultaneously because the scope of freedom is relatively big, Current 50 big gun hole counts of each work surface can be reduced to about 35;

(5) after treating this drift stoping, according still further to the step of above-mentioned () to (four) Carry out the exploitation of other routes.

The above is the preferred embodiment of the present invention, it is noted that for the art Those of ordinary skill for, on the premise of without departing from principle of the present invention, it is also possible to do Going out some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.

Claims (6)

1. the route type mining apparatus of an air-cushion type headspace, it is characterised in that: include Air cushion, fixed mechanism and auxiliary equipment, air cushion includes air bag (4), Air filling and discharging valves (5), peace Full valve (6) and buckle (7), fixed mechanism includes static line (1), card ball and setscrew, Auxiliary equipment includes air compressor machine, connecting tube and eyelid covering (13);Each air bag arranges one on (4) Individual Air filling and discharging valves (5), a relief valve (6) and four buckles (7), air cushion passes through buckle (7) being connected on static line (1), card ball is arranged on static line (1), static line (1) Being fixed on ore body route lateral wall by setscrew, air compressor machine is air bag (4) by connecting tube Inflation, eyelid covering (13) covers on air cushion.
The route type mining apparatus of air-cushion type headspace the most according to claim 1, It is characterized in that: described air bag (4) is flexible gas impermeable material, air bag (4) is internal along thick Degree secretly sets lacing wire or is made up of gas column side by side.
The route type mining apparatus of air-cushion type headspace the most according to claim 1, It is characterized in that: described Air filling and discharging valves (5) includes charge valve (8), only vent plug (9), stops The band of gas (10) and valve body (11), only the band of gas (10) is elastomeric material, only vent plug (9) Inserting valve body (11), only vent plug (9) outside connects venting rope (12).
The route type mining apparatus of air-cushion type headspace the most according to claim 1, It is characterized in that: described relief valve (6) is check valve.
The route type mining apparatus of air-cushion type headspace the most according to claim 1, It is characterized in that: described card bulb diameter is more than buckle (7) diameter.
6. use the route type mining apparatus of the air-cushion type headspace described in claim 1 to enter The method of row mining with stowing, it is characterised in that: use air cushion to be previously placed in stope to be filled, Then this stope is carried out filling, the headspace formed after stope filling with preset material, As explosion free space during adjacent mining blasting;Specifically include following steps:
(1) setting up air cushion: more than one air cushion is one group, often group air cushion is with the most solid Fixed rope (1) and venting rope (12), treat that route ore body back production is complete, before completing general filling After preparation, in the close top of route, the position of base plate, setscrew is installed, air cushion will be hung Static line (1) be fixed on setscrew by tied silk respectively, by air cushion buckle (7) point It is not stuck on static line (1), the only vent plug (9) of each air cushion is connected to venting rope (12), Air cushion lays plastic skin (13), inflates to each air bag (4);
(2) filling route: after air cushion sets up, implements filling to route;
(3) reclaiming air cushion: when exploiting adjacent Mining entrance, pre-buried air cushion exposes, this Time pull venting rope (12), then stop vent plug (9) quilt with venting rope (12) cone that is connected Extract, complete first group of air cushion venting;Pulling static line (1) afterwards, dragging is fixed on fixing This group air cushion on rope (1) reclaims;Treat the position tunneled successively to apart from each group of air cushion 3-5m When putting, it is respectively completed the recovery of each group of air cushion by as above step;
(4) Drift stoping: using the reserved dead zone of air cushion as the scope of freedom (16), according to side Arrange big gun hole to the mode of ore caving, implement rock drilling, explosion, ore removal operation;
(5) after treating this drift stoping, according still further to (one), (two), (three), (four) Step carry out the exploitation of other routes.
CN201610533947.8A 2016-07-07 2016-07-07 Air cushion type space-reserved drift and fill type mining device and method CN106014415A (en)

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CN105952451A (en) * 2016-07-07 2016-09-21 北京科技大学 Air cushion type space-reserving approach road type mining device and method
CN109779681A (en) * 2019-01-23 2019-05-21 山东科技大学 A kind of supporting-isolation combined type Paste-filling System and placement method

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CN105952451A (en) * 2016-07-07 2016-09-21 北京科技大学 Air cushion type space-reserving approach road type mining device and method
CN105952451B (en) * 2016-07-07 2018-03-30 北京科技大学 The route type mining apparatus and method of a kind of air-cushion type headspace
CN109779681A (en) * 2019-01-23 2019-05-21 山东科技大学 A kind of supporting-isolation combined type Paste-filling System and placement method

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Application publication date: 20161012