综合勘察方法在评价桩基冲孔对水库稳定性影响中的应用

通过研究肇花高速公路桩基施工阶段濒临水库桩基冲击成孔对芙蓉嶂水库稳定性的影响，根据本项目的地质特点，参照类似工程经验，本次专项勘察先后采取了“资料收集与利用、工程地质调查测绘、钻探、高密度电法、抽水试验、地下水流速流向测试（示踪试验）、工程类比及内业综合计算对比分析等”等综合的勘察手段与方法，基本查明了项目区工程、水文地质条件。同时对狮岭高架桥三桥桩基冲击成孔对左侧芙蓉嶂水库稳定影响进行了分析评价，根据分析结果，桩基施工对水库大坝、泄洪渠及副坝无影响。

Application of Comprehensive Investigation Methods in the Evaluation of Pile Foundation Punching on the Stability of Reservoir

By studying the influence of reservoir stability caused by the highway pile foundation punching around the reservoir, in line with the geological characteristics of the project, with reference to similar engineering experience, a special investigation is made by comprehensive means and methods, including data collection and utilization, engineering geological investigation of surveying and mapping, drilling, high-density resistivity method, pump- ing experiment, groundwater flow test, engineering analogy and comparative analysis ,etc., which identified the engineering geological and hydro geological conditions of the area. At the same time, analysis and evaluation is made about the impact of Shiling Bridge pile punching on the stability of Furongzhang Reservoir. The analysis indicates that the pile foundation construction had no significant effect on the reservoir dam, flood drainage and auxiliary dam.