确定卸压瓦斯抽采钻孔合理层位的试验  

Experimental study on determining the rational horizon of pressure-relief gas extraction boreholes

作　　者：梁冰[1] 赵海波[1] 王岩[1,2,3] 袁欣鹏[1] 

机构地区：[1]辽宁工程技术大学矿业工程学院,辽宁阜新123000 [2]中煤科工集团沈阳研究院有限公司,辽宁沈阳110016 [3]煤矿安全技术国家重点实验室,辽宁抚顺113122

出　　处：《煤田地质与勘探》2014年第3期96-99,共4页Coal Geology & Exploration

基　　金：国家重点基础研究发展计划(973计划)项目(2011CB201206);国家自然科学基金青年科学基金项目(50904033);辽宁省自然科学基金项目(20102090)

摘　　要：卸压瓦斯抽采技术的关键在于根据采动裂隙场分布规律合理布置瓦斯抽采孔。针对富含水厚煤层大采高工作面快速推进,依据采动裂隙时空演化特征与瓦斯运移规律,在亭南煤矿实施了确定卸压瓦斯抽采钻孔合理层位的工业试验。通过对不同层位钻孔抽采浓度统计分析,卸压抽采钻孔终孔布置在裂隙带离层区抽采效果最好,从而确定卸压瓦斯抽采钻孔的合理层位。The key of the technology for pressure relieving drainage lies in decorating gas extraction hole reasona-bly based on the distribution rule of mining-induced fractures field. Aimed at thick coal seam enriched in water for large mining height and rapid development, on the basis of the characteristics of space-time evolution of min-ing-induced fractures and gas migration rule, the commercial test of the technology of pressure relieving drainage for reasonable horizon was confirmed in Nanting mine. According to the statistical analysis of different extraction concentration, the effect for end hole of pressure relieving drainage hole in the extraction zone of fissure zone was the best, so the reasonable horizon of pressure releasing gas drainage hole was determined.

关 键 词：覆岩运动 裂隙演化 卸压抽采 钻孔层位 

分 类 号：P634[天文地球—地质矿产勘探]