RU2183272C2 - Method of underground mining of mineral sheet deposits - Google Patents

Abstract

FIELD: mining; methods of underground mining of coal seams. SUBSTANCE: method includes division of mine field into blocks; rising of vertical blind shafts from bottom up from group underground workings to seam. In this case, group horizontal workings are driven in bottom of lower worked seam at a depth of lower boundary of mine field and connected with main load-lifting opening. Each block is mind downward by strips from block boundary to its center. Made in each block is vertical block shaft with exit to day surface. Inclined working is driven in group of blocks on dip and connected with block shaft. EFFECT: simplified driving of workings, equipment delivery and operation of extraction pillar, higher safety and improved comfort for workers. 2 dwg

Description

 The invention relates to the field of mining, in particular to underground mining of coal deposits.

 When operating coal deposits in the existing technical environment, quite often mine fields are divided into blocks along strike or dip. At the same time, two or three vertical shafts are usually carried out in the center of the mine field, one of which serves to lift minerals, one or two others to lower and raise people, equipment and materials, and ventilation. In each of the blocks, in turn, an auxiliary trunk is carried out.

 The type of additional opening workings in this case (capital, horizontal crosshairs, gesenki, etc.) is taken depending on a number of geological and mining factors.

 Each of the blocks is prepared for excavation using a panel, horizontal or floor method of preparation, or a combination thereof. As for the development system, its version, as well as the method of preparation, is selected depending on mining and geological and mining factors (see, for example, Mountain Encyclopedia, vol. 1, Moscow: Publishing House "Soviet Encyclopedia", 1984, - p. 247).

 This method of developing reservoir deposits is usually used for high mine production capacity and requires not only a near-barrel yard with significant throughput, but also the presence of a large-capacity storage bunker in it. The disadvantage of this method, in addition, is a significant amount of conducting and maintaining inclined workings per 1000 tons of production.

 A known method of underground mining of stratified mineral deposits, including dividing the mine field into blocks, conducting vertical shafts from bottom to top in each block at the lower boundary of each block from group horizontal workings to the formation, conducting group horizontal workings in the soil of the lower of the developed formations at a depth of the mine fields and connected with the main lifting opening excavation, mining of each block in a descending order by strips from the border of the block to the center (see pa tent 2120551 C1, CL E 21 C 41/18, 10.20.1998).

 The specified method of underground mining of stratified mineral deposits has the following disadvantages. Firstly, in the known method, the extraction of excavations from the mouth of the vertical blind shaft, the delivery of equipment for these purposes and the further operation of the extraction column are quite complicated. Secondly, in the event of an accident at the mine, people will most often have to come to the surface, first dropping to the lower horizon and then only rising to the surface. From the point of view of human psychology, this is not the best solution.

 The aim of the present invention is to remedy these disadvantages and increase the efficiency of the method of underground mining of stratified mineral deposits.

 This goal is achieved by the fact that in the known method of underground mining of mineral deposits, including dividing the mine field into blocks, conducting vertical blind shafts from bottom to top from group underground workings to the formation, while group horizontal workings are carried out in the soil of the lower of the developed formations at a depth of the lower the boundaries of the mine field and are connected to the main lifting opening excavation, mining each block in a descending order by strips from the boundary of the block to the center, in House unit further tested vertical shaft having an output at the earth's surface, and a block group of drop formation is carried Plast inclined formulation and connect it with block barrel.

 In FIG. 1 shows a diagram of the preparation and development of one seam from a suite of thin flat coal seams according to the proposed underground mining method. The paper shows the sloping part of the mine field with two blocks in operation. Figure 2 shows a cross section across the strike of the formations (the Bremsberg part of the mine field is worked out).

 The proposed development method includes two centrally doubled vertical shafts 1 and 2, passed to the depth of the lower technical boundary of the mine field, near-barrel yard 3, group horizontal workings 4 and 5 (workout 4 is passed along the strike of the formation, workout 5 is across the strike of the formation), vertical block shafts 6, passed from the surface, inclined formation workings 7 and vertical shafts 8, 9 and 10, passed blind from bottom to top from horizontal workings 5. From inclined workings 7 are excavated workings 11 and 12, then a split furnace, in which a set of equipment is mounted and a useful material is mined in a treatment bottom-block. At the same time, the rock mass from treatment and preparatory faces is transported to trunks 1 and 2 according to the scheme: treatment face - excavation recoil drift - block trunk - horizontal transport output - near-barrel yard.

 Using the proposed method of underground mining of reservoir deposits provides, in comparison with the known method, improving the conditions for the delivery of equipment to the preparatory and treatment faces, excavation workings, increasing the safety of work.

 The presence of inclined workings in the center of each group of falling blocks (part of the mine field) associated with a vertical shaft traversed from the surface allows, firstly, to carry out the descent-lifting of people, equipment and materials immediately to the required section of the mine field, and secondly , in the event of an accident at lower horizons, ensure the withdrawal of people in the direction of the surface.

Claims (1)

 The method of underground mining of stratified mineral deposits, including dividing the mine field into blocks, conducting vertical blind shafts from bottom to top from group underground workings to the formation, with group horizontal workings conducted in the soil of the lower of the developed formations at a depth of the lower boundary of the mine field and connected to the main lifting opening working out, the development of each block in a descending order by strips from the border of the block to the center, characterized in that in each block spend Vertical, the block bore having an outlet at the earth's surface, and a block group of drop formation is carried inclined formulation and connect it with block barrel.

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