工程科学学报2017，Vol.39Issue(3)：323-334,12.DOI:10.13374/j.issn2095-9389.2017.03.002
中国大陆金属矿区实测地应力分析及应用
Analysis and application of in-situ stress in metal mining area of Chinese mainland
摘要
Abstract
Based on the measured in-situ stress data of the metal mining area in China, 165 sets of data were finally adopted after optimized treatment, which basically covers the distribution area of the main metal mines in the Chinese mainland. The characteristics of in-situ stress field in the buried depth of the metal mining area in China were presented by regression analysis method, and the sta-bility of the fault of the metal mining area in China was discussed from the ground stress. The results show that the vertical principal stress, the maximum horizontal principal stress and the minimum horizontal principal stress in the metal mining area of Chinese main-land generally increase linearly with the depth. The difference between maximum and minimum horizontal principal stresses (Δσ) in-creases with the depth, but the regularity is not significant. The ratio of maximum horizontal principal stress to vertical principal stress ( Kh,max ) , the ratio of minimum horizontal principal stress to vertical principal stress ( Kh,min ) and the ratio of average horizontal stress to vertical principal stress (Kh,av) mainly concentrate in the interval of 1. 00 to 2. 50, 0. 50 to 1. 50, and 1. 00 to 2. 00, respectively. With the increase of depth, the variation amplitudes of the three lateral pressure coefficients decrease gradually: Kh,max , Kh,min and Kh,av tend to 1. 83, 0. 80 and 1. 31, respectively. The ratio of maximum horizontal principal stress to minimum horizontal principal stress has no obvious regularity with the depth, and the values mainly concentrate from 1. 5 to 2. 0, approximate to normal distribution. Metal mining area has the possibility of fault slip when the depth is less than 500 m, and the reverse fault has the possibility of sliding while the strike slip fault is in a relatively stable state when the depth is more than 500 m.关键词
岩石力学/井下工程灾害/金属矿区/优化处理/地应力场/分布规律/断层稳定性Key words
rock mechanics/underground engineering disaster/metal mining area/optimized processing/in-situ stress field/distribution rules/fault stability分类
天文与地球科学引用本文复制引用
李鹏,苗胜军..中国大陆金属矿区实测地应力分析及应用[J].工程科学学报,2017,39(3):323-334,12.基金项目
国家重点基础研究发展计划资助项目(2015CB060200) （2015CB060200）
国家自然科学基金资助项目(51574014) （51574014）
中央高校基本科研业务费专项资金资助项目(FRF-TP-16-017A3) （FRF-TP-16-017A3）
