CN103758568A - Opencast coal mine end slope filling mining method - Google Patents

Abstract

Provided is an opencast coal mine end slope filling mining method. The opencast coal mine end slope filling mining method includes the steps that a coal pillar reserved at an opencast coal mine end slope is divided into a plurality of stalls which are equal to an end slope coal mining machine roller in width; a stowboard is tunnelled to the position of an earth surface safety boundary line in the coal seam trend direction, and a stowboard is tunnelled in the coal seam inclination direction; an end slope coal mining machine is used for mining the stalls on the side of the stowboard in the coal seam inclination direction at intervals, after mining of the stalls is completed, the end slope coal mining machine is removed, mining openings in the sides of stall side slopes are sealed, and filling is performed on the stalls which are mined at intervals; then, mining is performed on stalls at intervals, the stalls are not mined, filling is performed on the mined stalls, and the steps are repeated until mining of all the stalls which are not mined is completed. According to the opencast coal mine end slope filling mining method, rock and soil discharged by an opencast coal mine can be effectively used, the discharge amount of the rock and soil of the opencast coal mine is reduced, the stripping ratio is lowered, mines end slope coal resources are mined in a maximization mode, meanwhile the side slope safety is guaranteed, and the efficient environment-friendly production process of the opencast coal mine is achieved.

Description

Open coal mine end side filling mining method

Technical field

The present invention relates to a kind of exploitation method, the exploitation method that especially a kind of open coal mine end that is applicable to use in the exploitation of open coal mine end side is helped.

Background technology

Opencut coal mine mining is the important component part of China's coal-mine production industry, is bearing important coal mining task.For a long time, open coal mine end head of a secret society will rely on spiral drilling machine or end side coal-winning machine to reclaim, and need to stay and establish barrier pillar, so the rate of recovery is very low, serious waste of resources.And stay the barrier pillar of establishing that unstability may occur under the long term of overlying rock, and then cause slope and land slide, crisis open coal mine production safety.Open coal mine is due to condition restriction, the outer dump of sometimes having to set up, and not only direct land occupation, causes water and soil and pollutes, and harm vegetation growth, destroys local ecological natural environment.How guaranteeing under the prerequisite of Safety of Coal Mine Production, recovery end side coal resources are open coal mine difficult problems urgently to be resolved hurrily always to greatest extent.

Summary of the invention

Technical problem: the object of the invention is to overcome the deficiencies in the prior art part, provide a kind of efficiency high, do not need land occupation separately to build refuse dump, to greatest extent the open coal mine end side filling mining method of recovery end side coal resources

Technical scheme: open coal mine end of the present invention is helped filling mining method, comprises following upper step:

A. open coal mine end side is stayed the barrier pillar of establishing to be divided into and a plurality of bordrooms of holding side coal mining machine roller width to equate;

B. along bearing direction, tunnel stowboard to table safety boundary line place, ground, then along seam inclination direction driving stowboard, then in stowboard, lay filling pipeline;

C. apart from seam inclination direction, tunneling side, utilize end side coal-winning machine interval to exploit a plurality of bordrooms, after the bordroom exploitation of each interval exploitation finishes, withdraw out end side coal-winning machine, seal at once bordroom side slope step side and adopt cave mouth, the bordroom of exploiting by filling pipe road direction interval carries out filling;

D. when charges solidify completely, after thering is the ability that supports overlying rock, use side side coal-winning machine is exploited the unquarried a plurality of bordrooms in interval respectively, after each bordroom exploitation finishes, sealing bordroom side slope step side is adopted cave mouth, bordroom after exploitation is carried out to filling, go round and begin again, until complete all exploitations of unminding bordroom.

2. open coal mine end according to claim 1 is helped filling mining method, it is characterized in that: the material that bordroom is carried out to filling is by after the native rock fragmentation of peeling off, with the cementing properties paste slurry of making after flyash, cementitious matter and water mix and blend.

Beneficial effect: owing to having adopted technique scheme, the invention solves as supporting overlying rock, reducing mining damage, thereby end side exploitation of coal resources need stay the problem that barrier pillar causes recovery ratio to reduce of establishing.In being helped, open coal mine end stay the barrier pillar of establishing to carry out back production and filling; not only reduced the waste of resource; and avoided establishing barrier pillar, under the long term of overlying rock, unstability may occurring because staying, and then cause slope and land slide, crisis open coal mine production safety.Tool has the following advantages:

1, the continuous obturation of large area forming after end side filling mining can effectively support overlying rock, reduces coal mining infringement and also can reduce the possibility of slope and land slide;

2, end side filling mining does not need to stay and establishes barrier pillar, can maximize exploitation end side coal resources, reduces production stripping ratio, improves recovery ratio;

3, end side filling mining charges be take Tu Yan as aggregate, and the Tu Yan that can effectively utilize refuse dump to pile up, reduces refuse dump land seizure, reduce refuse dump to the pollution of environment, destruction.

Accompanying drawing explanation

Fig. 1 is bordroom plane of arrangement figure and the mining sequence schematic diagram that open coal mine end of the present invention is helped filling mining method.

Fig. 2 is the A-A place stereochemical structure sectional view of Fig. 1.

In figure: bearing direction driving stowboard 1, seam inclination direction driving stowboard 2, bordroom 3,4,5,6,7,8,9,10.

The specific embodiment

Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:

Open coal mine end of the present invention is helped filling mining method:

A. open coal mine end side is stayed the barrier pillar of establishing to be divided into and a plurality of bordrooms of holding side coal mining machine roller width to equate, as shown in Figure 1, bordroom 3,4,5,6,7,8,9,10;

B., along bearing direction driving stowboard 1 to table safety boundary line place, ground, then along seam inclination direction driving stowboard 2, high 3.0 m of incline direction driving wide 4.0 m of stowboard 2 then lay filling pipeline in stowboard;

C. apart from seam inclination direction driving stowboard 2, surveying, utilize end side coal-winning machine interval to exploit a plurality of bordrooms, as bordroom 3, 5, 7, 9, bordroom width is end side coal mining machine roller width, after the bordroom exploitation of each interval exploitation finishes, withdraw out end side coal-winning machine, seal at once bordroom side slope step side and adopt cave mouth, bordroom by the exploitation of filling pipe road direction interval carries out filling, to after bordroom 3 exploitations, withdraw end side coal-winning machine, and move to bordroom 5 places exploitations, seal bordroom 3 side slope step sides simultaneously and adopt cave mouth, filling bordroom 3 is adopted cave, because coal seam exists angle of inclination beta, as shown in Figure 2, filling slurries can flow to lower from eminence, guaranteed higher pack completeness, afterwards, repetition is with above-mentioned action, exploit successively and filling bordroom 5, 7, 9,

D. in bordroom, charges solidify completely, after thering is the ability that supports overlying rock, use side side coal-winning machine is exploited the unquarried a plurality of bordrooms in interval respectively, as bordroom 4,6,8,10 is exploited, after each bordroom exploitation finishes, sealing bordroom side slope step side is adopted cave mouth, successively the bordroom 4,6,8,10 after exploitation is carried out to filling, repetitive operation, until complete all exploitations of unminding bordroom.

The material that bordroom is carried out to filling adopts by after the native rock fragmentation of peeling off, with the cementing properties paste slurry of making after flyash, cementitious matter and water mix and blend.

Claims (2)

1. an open coal mine end side filling mining method, is characterized in that comprising the steps:

A. open coal mine end side is stayed the barrier pillar of establishing to be divided into and a plurality of bordrooms of holding side coal mining machine roller width to equate;

B. along bearing direction driving stowboard (1) to table safety boundary line place, ground, then along seam inclination direction, tunnel stowboard (2), then in stowboard, lay filling pipeline;

C. apart from seam inclination direction, tunneling stowboard (2) side, utilize end side coal-winning machine interval to exploit a plurality of bordrooms, after the bordroom exploitation of each interval exploitation finishes, withdraw out end side coal-winning machine, seal at once bordroom side slope step side and adopt cave mouth, the bordroom of exploiting by filling pipe road direction interval carries out filling;

D. when charges solidify completely, after thering is the ability that supports overlying rock, use side side coal-winning machine is exploited the unquarried a plurality of bordrooms in interval respectively, after each bordroom exploitation finishes, sealing bordroom side slope step side is adopted cave mouth, bordroom after exploitation is carried out to filling, go round and begin again, until complete all exploitations of unminding bordroom.

2. open coal mine end according to claim 1 is helped filling mining method, it is characterized in that: the material that bordroom is carried out to filling is by after the native rock fragmentation of peeling off, with the cementing properties paste slurry of making after flyash, cementitious matter and water mix and blend.

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