摘要
为解决软弱顶板岩层大断面切巷围岩控制难题,开发了锚网索联合支护技术。技术以强化顶板软弱煤岩层、充分利用基本顶坚硬岩层为核心,采用高强度、高预紧力的锚网索支护,切巷掘出3个月后围岩趋于稳定,围岩呈现分阶段变形特征,顶、帮最大变形量分别为135 mm、169 mm。
In order to solve the problem of surrounding rock control of large cross section cutting roadway in weak roof strata,the anchor net cable combined support technology is developed.The core of the technology is to strengthen the weak coal strata of the roof and make full use of the basic roof hard strata.The anchor net cable support with high strength and high pre-tightening force is adopted.After 3 months of excavation,the surrounding rock tends to be stable,and the surrounding rock shows the characteristics of stage-by-stage deformation.The maximum deformation of roof and slope is 135 mm and 169 mm respectively.
作者
暴广昌
Bao Guangchang(Jinneng Holding Coal Industry Group Changzhi Sanyuan Zhongneng Coal Industry Co.,Ltd.,Shanxi Changzhi 046600)
出处
《山东煤炭科技》
2022年第1期37-38,41,共3页
Shandong Coal Science and Technology
关键词
软弱
大断面
联合
支护
weak
large cross section
combined
support
