山东煤炭科技2024，Vol.42Issue(2)：109-112,4.DOI:10.3969/j.issn.1005-2801.2024.02.024
高应力区巷道掘进施工防冲安全技术
Safety Technology for Impact Prevention in Roadway Excavation Construction in High Stress Areas
王渊 1张景祥2
作者信息
- 1. 中煤能源研究院有限责任公司,陕西 西安 710054
- 2. 母杜柴登煤矿,内蒙古 鄂尔多斯 017000
- 折叠
摘要
Abstract
During the excavation period of the Mudu Chaideng Coal Mine roadway towards to the goaf,there is significant fragmentation and high impact risk.By analyzing the factors affecting the excavation of the roadway towards to the goaf and the occurrence situation of mine pressure,different impact risk areas are obtained:the distance of 50-120 m from the goaf is a medium impact risk area,and the distance of 0-50 m is a strong impact risk area.Develop a comprehensive monitoring scheme for microseismic,stress,and drilling cuttings in different levels of risk areas,as well as a combined pressure relief scheme for positive head straight holes,side straight holes,and oblique holes;On the basis of conventional pressure relief engineering,2-4 inclined holes with an inclination angle of 10°-50° are added to the two sides behind the anchor excavator to enhance pressure relief.After taking relevant pressure relief measures,the high stress in the side of the roadway transferred to the deep,resulting in a decrease of 0.3 m in the side fragmentation and a decrease of 1-2 MPa in the shallow stress gauge,further reducing the risk of impact.关键词
冲击地压/高应力/掘进/采空区Key words
rock burst/high stress/excavation/goaf分类
矿业与冶金引用本文复制引用
王渊,张景祥..高应力区巷道掘进施工防冲安全技术[J].山东煤炭科技,2024,42(2):109-112,4.
