Design Methods and Calculation of the Pillar Replacement of the Qingshui River Phosphate Mine
Based on the existing mining method in the Qingshui River mine,its security pillars are replaced.The filling method is used to replace security pillars.Security pillars are first mined and then are filled to complete their replacement,and then a large area of the mine body is mined.According to the geological report and the mechanical parameters of on-site rock,the mine room width of the Qingshui River mine is calculated,and a series of mechanical conditions such as the bending and shear of rock are considered,which has reference significance for the replacement of mine pillars in Kaiyang County and its neighbouring mine areas.
Qingshui River phosphate minePillar replacementMining roomOrebady mining
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NSTL
万方数据
