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为研究深部地质环境下地应力分布差异性特征,以龙固矿软、硬岩地应力值及数值模拟结果为基础资料,分别讨论了埋深、岩性、构造等3个因素对其影响程度。研究结果表明:大部分软、硬岩地应力值均随埋深有逐渐增大趋势,且增大速率相差不大;岩性分析中,硬岩中的最大水平主应力明显大于软岩中的最大水平主应力,且硬岩中的3个主应力差值较大,而软岩相对较小。软岩将更早处于各向等压状态;断层破碎带中地应力出现应力释放现象,应力释放对最大水平主应力值影响较大,但对最小水平主应力的影响不大。而褶皱对地应力影响作用比断层明显,尤其是对最大水平主应力的影响较大。
In order to study the difference of geo-stress distribution in deep geological environment, the influence of three factors including depth, lithology and structure are discussed on the basis of the stress values of soft and hard rock in Longgu Mine and the numerical simulation results. The results show that most of the soft and hard rock stress values increase gradually with the depth of burial depth, and the increase rate is not much different. In the lithology analysis, the maximum horizontal principal stress in hard rock is obviously larger than that in soft rock Horizontal principal stress, and the difference between the three principal stress in hard rock is relatively large, while the soft rock is relatively small. Soft rock will be in an isobaric state earlier and earlier. Stress relaxation occurs in the stress distribution in the fault zone. Stress release has a great effect on the maximum principal stress but has little effect on the minimum principal stress. The effect of folds on geostress is more obvious than that of faults, especially for the maximum horizontal principal stress.