周家村岩溶地面塌陷原因分析及环境影响评价

Analysis of Reasons for Karst Ground Collapse in Zhoujia Village and Its Environment Evaluation

研究目的:通过对湘桂铁路周家村大溶江双线特大桥钻孔灌注桩施工引起岩溶地面塌陷原因的分析,评价岩溶地面塌陷对地下水环境和地基稳定性的影响。研究结论:施工机械振动是诱发本区脆弱地质环境下岩溶地面塌陷的主要原因,施工完毕后,岩溶地面塌陷对本区地下水环境和地基稳定性的影响不大;高速铁路建设中应充分考虑施工中引起的岩溶地面塌陷对周围环境的影响。

Research purposes： By analysing the karst ground collapse caused by the bore and cast pile for the Darong River Double - track Grand Bridge of the Hunan - Guangxi Railway in Zhoujia Village, the evaluation was made for the influence of karst ground collapse on the groundwater environment and foundation stability. Research conclusions：The vibration of the construction machines was the main reasons for the karst ground collapse. After completion of the construction, the karst ground collapse did not have serious impact on the groundwater environment and ground stability. In construction of high - speed railway, the influence of karst ground collapse on the surrounding environment should be adequately considered.