综合物探法在引绰济辽工程富水隧洞探测中的应用

Application of comprehensive geophysical prospecting method in exploration of water-rich tunnel for Water Diversion Project from Chaoerhe to Liaohe

基于地下水的导电性、介电特性,以及基岩的波阻抗差异等地球物理参数,内蒙古引绰济辽2—4号施工支洞采用地表高密度电法、洞内TST与CFC超前预报等综合物探方法,用于富水隧洞开挖的安全预测。实践证明,综合物探技术的准确性与适用性对保障隧洞施工安全有重大积极作用。

Based on the geophysical parameters such as the conductivity and dielectric properties of groundwater and the difference of wave impedance of bedrock,the comprehensive geophysical exploration methods such as the surface high-density electrical method,the advanced prediction of TST and CFC in the Liao2-4 construction branch tunnel of Water Diversion Project from Chaoerhe to Liaohe,Inner Mongolia,are used to predict the safety of the water-rich tunnel excavation.The practice has proved that the comprehensive geophysical prospecting technology is accurate and applicable,and has a great positive effect on the safety of tunnel construction.