煤矿安全2019，Vol.50Issue(5)：23-26,30,5.DOI:10.13347/j.cnki.mkaq.2019.05.006
褶曲构造型矿区地应力场分布特征与冲击机制
Distribution Characteristics and Impact Mechanism of In-situ Stress Field in Fold Tectonic Mining Area
赵耀中 1张宁博 2邓志刚 3赵善坤 4柴海涛 2李少刚3
作者信息
- 1. 乌审旗能源局,内蒙古 鄂尔多斯 017300
- 2. 煤炭科学技术研究院有限公司 安全分院,北京 100013
- 3. 煤炭资源高效开采与洁净利用国家重点实验室(煤炭科学研究总院),北京 100013
- 4. 北京市煤矿安全工程技术研究中心,北京 100013
- 折叠
摘要
Abstract
The vicinity of fold structure is often the area where rock burst occurs frequently. The higher original rock stress in this area has an important influence on the occurrence of rock burst. Based on structures distribution and ground stress test results of typical fold-type mining area, the stress field type of mining area and relationship with the structures distribution are analyzed. Geo-stress field distribution of mining area is analyzed by geo-stress field inversion method and the mechanism of the rock burst in the fold-type mining area is proposed combined with the features of rock burst damage and mechanical analysis method. The results show that: the horizontal stress is the main stress in the fold-type mining area, and the maximum principal stress is perpen-dicular to the curve axis; the stress concentration area is usually near the axis, and with the increase of the degree of fold varia-tion, the more obvious the regional stress concentration is, the wider the influence area is. The main impact damage of mining area is floor damage; the coupling of significantly increasing static load of surrounding rock of roadway and dynamic load caused by hard roof fracture induces the rock burst of fold-type mining area.关键词
褶曲构造型矿区/地应力测量/地应力场反演/冲击地压/动静载Key words
fold-type mining area/geo-stress measurement/geo-stress field inversion/rock burst/dynamic and static load分类
矿业与冶金引用本文复制引用
赵耀中,张宁博,邓志刚,赵善坤,柴海涛,李少刚..褶曲构造型矿区地应力场分布特征与冲击机制[J].煤矿安全,2019,50(5):23-26,30,5.
