摘要
针对酸刺沟煤矿6上105工作面推至距主回撤通道1~2m时,出现贯通侧煤壁大面积垮落,顶板整体下沉,工作面大面积来压,压死部分支架的情况,对6上107工作面主回撤通道采用GRT-101有机高分子聚合物作为注浆材料进行注浆加固,通过对浆液扩散半径、取芯结果、围岩强度、窥视结果、推采效果的观测,结果表明该加固方案能够保持顶板和煤壁的稳定,可有效防止工作面末采过程中出现冒顶和片帮事故。
Some problems appeared as 6up105 working face mining advanced to the main dismantling tunnel about 1-2m in Suancigou coal mine, which is about large area fall appeared in coal wall at transfixion side, roof fall totally, large area of working face roof appeared pressure, some supports were pressured, and then dismantling tunnel of 6up107 working face was reinforced by high- molecular polymer grouting material (GRT-101) . According test of grouting diffuse diameter, coring results, surrounding rock strength, peeping results and mining results, the results showed that the reinforcement scheme could keep roof and coal wall stability, roof fall and wall caving were prohibited during working face closure mining.
作者
苏波
SU Bo(Coal Mining & Designing Department, Tiandi Science & Technology Co. , Ltd. , Beijing 100013, China;Institute of Mining, China Coal Research Institute, Beijing 100013, China)
出处
《煤矿开采》
北大核心
2016年第4期69-72,共4页
Coal Mining Technology
基金
国家自然科学基金委员会与神华集团有限责任公司联合资助项目(U1261211)
中国煤炭科工集团重点项目(2014ZD001)
关键词
注浆加固
回撤通道
破碎围岩
注浆效果
reinforcement
dismantling tunnel
surrounding rock
grouting result
