Mine subsequent cemented and non-cemented filling mining method
A backfill mining and cemented backfill technology, which is applied in the fields of backfill, surface mining, mining equipment, etc., can solve the problems of great harm to the underground water system, unsafe mine production, and unfavorable mining costs, so as to reduce the cost of backfilling, economic and social Significant benefits and the effect of avoiding geological disasters
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[0029] Implementation in Datang mine section of Wengfu Group:
[0030] Occurrence conditions of the ore body: the average thickness of the ore body: 30 meters; the dip angle is 70-90 degrees, the rock firmness coefficient is 6-8, the surrounding rock is mainly dolomite, the rock firmness coefficient is 8-12, and the average ore grade is 22% ,The production capacity of the mine is 1.5 million tons / year;
[0031] (1) Mine preparation: the mining method is "VCR" method and "separate mining and transportation mining method". "The size of the mine house for the method is: the length is the horizontal thickness of the ore body, the width is 15 meters, and the height is 70 meters; the size of the mine house for the "separate mining and transportation mining method" is: the length is 40 meters, the width is the horizontal thickness of the ore body, and the middle section is 70 meters high. meters, the section height is 18 meters, and the pillar width is 8 meters;
[0032] (2) Prepar...
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