高位岩浆岩条件下瓦斯运移通道发育特征及瓦斯运移规律研究  

Study on the characteristics of gas channel development and gas migration under the condition of high magmatite

作　　者：徐传伟 蒋金泉[2] 张培鹏[3] 孔朋 刘绪峰 张国龙 

机构地区：[1]山东科技大学矿业与安全工程学院,山东省青岛市266590 [2]山东科技大学矿山灾害预防控制省部共建国家重点实验室培育基地,山东省泰安市271000 [3]山东科技大学资源与土木工程系,山东省泰安市271000

出　　处：《中国煤炭》2017年第12期133-136,176,共5页China Coal

基　　金：国家自然科学基金资助项目(51374139);山东省自然科学基金项目(ZR2013EEM018)

摘　　要：为研究关键层条件下瓦斯运移通道发育特征,以杨柳煤矿104采区为工程背景,通过相似材料试验,模拟了高位岩浆岩条件下离层裂隙发育规律。研究表明:随着工作面的不断推进,覆岩裂隙逐渐向上发育,并止于岩浆岩底部;高位岩浆岩的存在对离层裂隙发育起着控制作用,岩浆岩破断前,其底部形成大面积离层空间,为离层瓦斯的形成提供了条件;硬厚岩浆岩底部离层空间长时间大量扩展,为离层瓦斯积聚提供了孕育空间;岩浆岩发生破断后,离层瓦斯受强动压冲击作用,通过断裂裂隙突涌至工作面或采空区内,造成瓦斯突涌事故。通过离层注浆、抽采离层瓦斯等措施防治硬厚岩层下瓦斯突涌。To study the development characteristics of gas migration channel under the condition of key layer, taking No. 104 mining area of Yangliu Mine as engineering background, the development law of the fractured rock seam under the condition of high magmatic rock was simulated by similar material simulation experiment. The research showed that with work face advancing, rock gradually developed, and ended up at the bottom of magmatite. High magmatite played a controlling role in fracture separation. Magmatite formed a large area of separation space, providing the conditions for the formation of gas separation before breaking at the bottom. The large expansion of bottom separation space in hard and thick magmatite provided space for the separation of gas accumulation. After magmatite was broken, separated gas gushed into work face or gob under strong dynamic pressure impact through fracture, bringing about gas outburst accidents. The gas outburst under hard rock layer could be controlled by separating layer grouting and pumping off gas separation.

关 键 词：高位岩浆岩 相似模拟 离层裂隙 瓦斯突涌 

分 类 号：TD712[矿业工程—矿井通风与安全]