云桂线坡邦隧道工程地质特征研究

Research on the Engineering Geological Characteristics of Pobang Tunnel on Yungui Line

通过调查分析,阐述了云桂线坡邦隧道地形地貌、地层、地质构造、水文地质、岩石物理力学指标等特征,进行了洞口边坡稳定性、围岩分级、围岩稳定性等工程地质分析和评价,用地下水动力学法预测了隧道正常涌水量及最大涌水量,提出了8项工程措施建议。

Through investigation and analysis, this paper expounds the characteristics of PoBang Tunnel on Yungui Line in aspects of the landform, stratum, geological structure, hydrogeology, and petrophysical-mechanical indices, etc., makes engineering geological analysis and evaluation including the slope stability of tunnel adit, wall rock classification, and wall rock stability, etc., forecasts the normal water yield and the maximum water yield in the tunnel by using the method of groundwater dynamics, and puts forward eight engineering suggestions and measures.