“三软”倾斜厚煤层综放工作面护巷煤柱尺寸留设研究  

Study on Size of Protective Coal Pillar for Fully Mechanized Top Coal Caving Mining Face in Thick Inclined Seam with Soft Roof,Soft Coal and Soft Floor

作　　者：李金贵[1,2] 

机构地区：[1]太原理工大学,山西太原030024 [2]霍州煤电集团汾源煤业公司,山西霍州035100

出　　处：《煤炭工程》2014年第8期12-14,共3页Coal Engineering

基　　金：霍州煤电高层专业人才实践工程资助项目(HMGS2012XX)

摘　　要：针对“三软”厚煤层综放工作面护巷煤柱尺寸展开研究，通过理论计算得到文明煤矿5^#煤层的两综放工作面之间留设煤柱尺寸不小于19．8m，为进一步验证理论计算的客观性，采用计算机数值模拟了15m、20m、25m、30m、35m、40m六种方案煤柱稳定性与支承应力分布情况，最终确定留设煤柱尺寸为20～25m之间。The paper had a study on a size of the protective coal pillar of the gateway in fully mechanized top coal caving mining face in thick seam with soft roof, soft coal and soft floor. With a theoretical calculation, a size of the coal pillar left between two fully mechanized top coal caving mining faces in No. 5 seam of Wenming Mine should not be less than 19. 8m. In order to further approve the theoretical calculated objectivity, a computation numerical value was applied to simulate a stability and support stress distribution of the comprehensive coal pillar with six plans of 15m, 20m, 25m, 30m, 35m and 40m. The final size of the coal pillar left was about 20 -25m.

关 键 词：“三软”煤层 厚煤层 护巷煤柱 塑性区 支承应力 煤柱留设 

分 类 号：TD822.3[矿业工程—煤矿开采]