特厚煤层液态二氧化碳相变致裂弱化顶煤技术的应用  

Application of Liquid Carbon Dioxide Phase Change Cracking Weakening Top Coal Technology in Extra Thick Coal Seam

作　　者：刘东 LIU Dong(Shenyang Research Institute of China Coal Technology and Engineering Group;State Key Laboratory of Coal Mine Safety Technology)

机构地区：[1]中煤科工集团沈阳研究院有限公司,辽宁省沈阳市110000 [2]煤矿安全技术国家重点实验室

出　　处：《现代矿业》2021年第3期68-70,共3页Modern Mining

摘　　要：为解决胡家河煤矿401102工作面放顶煤效果不佳、顶煤难垮落的问题,论证液态二氧化碳相变致裂技术在顶煤弱化方面可行性,采用了现场试验和统计分析对比方法,研究了该技术在401102工作面顶煤弱化上的致裂参数设计。通过现场观测和统计放顶煤量,得出液态二氧化碳相变致裂技术在401102工作面顶煤弱化方面效果非常显著。In order to solve the problems of poor top-coal caving effect and difficult top-coal caving in No.401102 working face of Hujiahe Coal Mine,and to demonstrate the feasibility of phase-change carbon dioxide cracking technology in top-coal weakening,the cracking parameter design of this technology in No.401102 working face was studied by field test and statistical analysis.Through field obsrvation and statistics of top-coal caving amount,it is concluded that liquid carbon dioxide phase change cracking technology has a very significant effect on top-coal weakening in 401102 working face.

关 键 词：液态二氧化碳 顶煤弱化 顶煤回收 

分 类 号：TD823.49[矿业工程—煤矿开采]