摘要
采用套孔应力解除法和完全温度补偿的空心包体应变技术对三山岛金矿-750 m水平及以上9个水平进行了地应力实测,获得了该矿区-750 m及以上各水平的13个测点的主应力大小及方向。根据矿区地质构造特征及地应力测量结果的分析,得出了该矿区地应力分布的基本规律,即:矿区以构造应力为主导,最大水平主应力方向与区域地质构造应力场基本一致,最大水平主应力和最小水平主应力的差值较大,不利于保持巷道围岩稳定性。上述分析对于该矿山合理规划巷道布局以及进行围岩支护有一定的参考价值。
The in-situ stress of the 750 m level and its above 9 levels of Sanshandao gold mine is measured by adopting the hollow borehole overcoring stress release method and hollow inclusion strain technology of complete temperature compensation,the principal in-situ stress values and its directions of the 13 points distributed in-750 m level and its above 9 levels of Sanshandao mining area are obtained.Based on the analysis results of the geological tectonic characteristics and in-situ stress measurement results,the in-stitu basic distribution law of Sanshandao mining area is obtained,that is to say,the tectonic stress is dominant in Sanshandao mining area,the direction of maximum horizontal principal stress is basically consistent with the stress field of regional geological tectonic,the difference between the maximum horizontal principal stress and the minimum horizontal principal stress is big,which is unfavorable to the stability of roadway surrounding rock.The above analysis results related to the in-stitu stress distribution characteristics of Sanshangdao mining area can provide some reference for the roadway layout and surrounding rock supporting in Sanshangdao gold mine.
出处
《现代矿业》
CAS
2017年第1期202-205,共4页
Modern Mining
关键词
地应力
套孔应力解除法
空心包体应变技术
巷道布局
围岩支护
In-situ stress
Hollow borehole overcoring stress release method
Hollow inclusion strain technology
Roaduay layout
Surrounding rock supporting
