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白庄地裂缝是南水北调中线工程遇到的唯一一处地裂缝地质灾害。通过勘察白庄地裂缝的分布、发育形态特征,研究煤矿开采沉陷影响、九里山断裂构造、应力解除效应、环境地质背景条件、地下水作用等因素,分析地裂缝的发育成因。结果表明,白庄地裂缝不属于采空区沉陷裂缝,其发育受九里山断裂构造控制,在其他环境地质作用的变化因素(采矿活动引起的应力释放,地下水下降,地表水下渗)诱发和激化的综合叠加作用的体现。成因分析和初步监测显示,地裂缝仍存在微弱的活动性,但总体趋于稳定。
Ground fissures in Baizhuang are the only ground fissure geological disasters encountered in the mid-route of the South-to-North Water Diversion Project. The causes of ground fissures were analyzed by investigating the distribution of the ground fissures in Baizhuang, developing morphological characteristics, studying the influence of coal mining subsidence, the structure of Jiulishan fault, stress relieving effect, environmental geologic background conditions and groundwater effect. The results show that the fissures of Baizhuang are not subsidence fissures, and their development is controlled by the structure of Jiulishan fault. In other environmental factors (such as stress release caused by mining activities, groundwater descent and surface water infiltration) induced by The embodiment of intensified superposition. Genetic analysis and preliminary monitoring showed that there was still weak activity in ground fissures, but the overall trend was stable.