fault fracture zones often form in active fault zones and appear as long extension with stable trending, they are jointly controlled by active faulting, underground water concentration and freezing expansion 断层裂缝沿断层破碎带定向分布,产状稳定,成群产出,与断层活动、地下水运移、不均匀冻胀存在密切的关系,是构造变形与融冻变形联合、内外动力耦合产生的复合成因地裂缝。
the paper makes out comprehensive evaluation of under pressure mining of mining area through the below aspects : analysising water-resisting layer's occurrence geologic features, physical and mechanical property and stability of duancun-leigou bauxite deposit; researching of confined aquifer's hydrogeology features, fault fracture zone and its transmissivity of cambrian-ordovician limestone; combining calculation of thickness quantitative index of safe water-resisting layer and etc 摘要通过对段村雷沟铝土矿隔水层赋存地质特点、物理力学性质及其稳定性分析和寒武奥陶系灰岩承压含水层水文地质特征、断层破碎带及其导水性的研究,结合安全隔水层厚度量化指标的计算等,对矿区带压开采做出综合评价。