上解放层开采对下煤层卸压作用研究
吴向前1
窦林名2
吕长国2
郑有雷3
1.中国矿业大学煤炭资源与安全开采国家重点实验室,江苏徐州221008／充州煤业股份有限公司济宁三号煤矿,山东邹城2720692.中国矿业大学煤炭资源与安全开采国家重点实验室,江苏徐州,2210083.充州煤业股份有限公司济宁三号煤矿,山东邹城,272069
摘要：Based on the geological conditions and mining parameters of the coal mining face in No.12 mining block of Jining No.3 Mine,a similar simulation in the lab was conducted on the mining process of the coal mining face in the uper liberated seam.In combination with the site measured results,the pressure releasing function of the uper liberated seam mining to the low seam was analyzed.The study results showed that after the liberated seam mined,selling and deformation occurred in the low seam and rock strata and the integrality of the low seam was destroyed.Great number of the elastic energy were released and the seam stress of the liberated seam were released.The max stress released rate was 19.2% and a good pressure releasing effect was well played.The calculation of the site results showed that the pressure releasing angle along the coal mining face strike was 77° and the inclined pressure releasing angle was 79°.
关键词：冲击地压解放层相似模拟卸压作用被保护层
分类号：TD324(矿山压力与支护)
论文发表日期：2012-01-01
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：5( 28-31,61 )
英文信息