Mining method for once-mining overall height of gypsum ore deposit

Abstract

The invention is a mining method for mining the whole height of the I gypsum group of the gypsum ore deposit at one time, which has the characteristics of low comprehensive cost and high labor productivity. The method of layer-by-layer mining from bottom to top is adopted in the mining of the mine, first in the gray shale G 2 Drill the shot in the middle, take out the G 2 Separately loaded and transported away, and then in plaster I 3 Drill the hole in the middle and shoot the gun, and the plaster will collapse I 3 , after the mining room is wide enough, the gypsum I 2 Drill the hole in the middle and shoot the gun, and the plaster will collapse I 2 , then in red shale G 1 Drilling holes in the middle and shooting down the red shale G 1 , but not transported away, piled in the mine, and finally in the gypsum I 1 Drill the hole in the middle and shoot the gun, and the plaster will collapse I 1 . The invention has the advantages of simple process, easy realization and popularization.

Description

Technical field: [0001] The invention relates to the technical field of mining, in particular to a mining method for mining a gypsum deposit with full height at one time. Background technique: [0002] Gypsum is an indispensable raw material in cement production. With the development of capital construction and residential construction, the demand for cement is increasing, so the demand for gypsum is also increasing. Due to the thickness of gypsum deposited in each gypsum mine, The geological conditions such as the number of layers are different, so it is impossible for the same mining method to be suitable for all mines. At present, the commonly used mining method is to divide the ore into two mining layers, and arrange roadways in the two layers respectively, and the I gypsum is a single gypsum layer I 1 , II paste is two layers of plaster I 2 and I 3 Between a layer of gray rock sheet G 2 , Between I paste and II paste is red shale G 1 , I paste and II paste are resp...

AI Technical Summary

Problems solved by technology

The mining sequence is to excavate first the I paste cut hole, and then the opening on both sides reaches 10 meters, that is, stop mining after the mine room reaches the designed width. Kaibang on both sides to 8 meters, stop mining, but due to red shale G 1 It is used as the bottom plate of I plaster and the roof of II plaster. It is easy to fall off due to the blasting vibration of cutting holes and mining for many times, which poses a threat to the mining of II plaster mine. Therefore, the II plaster mine is not enough to mine 8 meters. many

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