摘要
为了避免干河煤矿2-126工作面一绕巷F~#点前22m处受断层影响,约12m范围内围岩变形得到有效控制,通过理论计算并结合现场实际情况,确定了4MPa注浆压力、4.8m注浆深度及800mm注浆钻孔排距的注浆参数,共布置15排60个注浆孔分循环进行该段巷道的注浆加固作业。围岩变形量监测发现,围岩变形控制在允许范围内,取得了较好的加固效果。
In order to avoid the influence of faults at 22m in front of F~#point of No.2-126 working face of Ganhe Coal Mine,the surrounding rock deformation within 12m range can be effectively controlled.Through theoretical calculation and combining with the actual situation of the site,the grouting parameters of 4MPa grouting pressure,4.8m grouting depth and 800mm grouting hole row spacing are determined.A total of 15 rows of 60 grouting holes are arranged to carry out grouting reinforcement of this section of roadway by cycle.It is found that the deformation of surrounding rock is controlled within the allowable range and good reinforcement effect is achieved.
作者
弓伟
Gong Wei(Shanxi Huobao Ganhe Coal Mine Co.,Ltd.,Shanxi Linfen 041602)
出处
《山东煤炭科技》
2020年第7期60-62,共3页
Shandong Coal Science and Technology
关键词
巷道
断层
注浆
加固
roadway
fault
grouting
reinforcement
