SU899957A1 - Method of mining steep and sloping coal beds - Google Patents

Description

(54) METHOD FOR DEVELOPING POWERFUL TIGHT AND INCLINED COAL STRAYS

one

The invention relates to the mining industry and can be used in the development of thick steep and sloping coal seams.

There is a method of developing steep and sloping coal seams, which includes testing the installation layer at the roof of the layer, laying a flexible overlap on the soil of the installation layer and the subsequent mining of the layer with horizontal layers in descending order 1.

There is also known a method for developing thick steep and inclined coal seams, which includes carrying out preparatory workings, removing the layer at the top of the reservoir, cutting through the gaps from the specified layer to the formation's soil, filling the gaps with hardening material, and working out the coal mass between the gaps and laying the intergap open space 2 .

However, both of these methods are characterized by insufficient efficiency and intensity of mining, as well as significant development complexity.

The purpose of the invention is to increase the development efficiency, intensify and reduce the labor intensity of mining.

The goal is achieved by the fact that - a layer at the roof is worked by falling

5 of the reservoir, the slits are cut along the strike in a descending order and simultaneously with the filling of the slits with hardening material they fill a part of the developed space of the specified layer adjacent to

Q each slot, and the coal mass between the slots is worked along the strike of the formation successively in descending order, while laying the intergap open space in the filling mass near the soil of the formation leaves a passage, and the remaining 15 of the developed space of the layer at the roof of the formation with the laying of the intergap open space, as well as the fact that the coal in the layer at the roof of the formation was excavated, the gaps were cut and the coal mass between the gaps was performed simultaneously.

Claims (2)

FIG. 1 shows a diagram of the reservoir mining in the plane across the strike of the reservoir; in fig. 2 is a diagram of testing between a slotted array of coal in the plan. The method is as follows. After preparation according to the well-known schemes of the excavation section of a powerful steep or inclined formation 1, it is started to be developed. To do this, at the roof 2, a layer of 3 coal is cleaned by the downhole 4 using a excavation machine. 5. Following the clearing face 5 from layer 3 to soil 6 of the reservoir, auger-type installation 7 cuts slots along the strike of the reservoir into which the hardening material 8 is fed. Simultaneously with the supply of hardening material, part 9 of the developed space of the layer 3 is laid with the formation of overlap. The intergap massif of coal 10 is worked out along the strike by cleansing holes 11, for example, from the flanks of the excavation section in the opposite direction. The intergap space was filled with backfill material 12, leaving a passage 13 near the soil of the formation for ventilation in the backfill array. In the ceiling of hardening material 9, windows are left for various kinds of technological operations. The remaining part 14 of the open space of the layer 3 is laid simultaneously with the laying of the intergap open space. Excavation of coal in the layer at the roof of the seam, cutting through the gaps and working out the coal mass between the gaps can be performed simultaneously with the corresponding advance in the space of works on excavation in the layer of cutting the gaps and working on cutting the intercritical coal mass. The specified advance is chosen depending on the technical and technological conditions, for example, on one cycle of mining at the excavation site. PG1Sh1 This method will improve the efficiency of development, to intensify the excavation and reduce the complexity of mining. Claim 1. Method of developing thick steep and inclined coal seams, including preparatory workings, mining the layer at the top of the reservoir, cutting through the gaps from the specified layer to the soil of the formation, filling the gaps with hardening material and developing an array of coal between the gaps with the interstitial development gap , characterized in that, in order to increase the efficiency of development, intensify and reduce the labor intensity of mining, the layer at the roof is worked off by the dip of the seam, the slits are cut through In the downstream order and simultaneously with filling the gaps with hardening material, they fill in a part of the developed space of the specified layer adjacent to each gap, and the coal mass between the gaps is worked out in the downward order along the strike of the layer; the intergap excavated space in the filling mass at the soil of the reservoir leaves a passage, and the remaining part of the excavated space of the layer at the roof of the reservoir is laid simultaneously with the intercavity intergap space developed Twa. 2. A method according to claim I, characterized in that the excavation of the coal in the layer at the roof of the formation, the cutting of the gaps and the processing of the coal mass between the gaps are performed simultaneously. Sources of information taken into account during the examination 1. USSR author's certificate number 94141, cl. E 21 C 41/04, 1949. 2. USSR author's certificate number 95685, cl. E 21 C 41/04, 1947.::: /// 7 /////////////////