旗杆山隧道斜井岩溶段涌水突泥处治技术

Treatment Technology of Water Inrush and Mud Inrush in Karst Section of Inclined Shaft of Qiganshan Tunnel

以重庆市城开高速公路旗杆山隧道斜井岩溶段为研究背景,综合运用TSP、地质雷达、多功能地质钻孔等手段,建立隧道综合超前地质预报体系,通过该体系较准确预测了该段岩溶不良地质情况。采取一系列行之有效的处治措施,快速有效地完成了涌水突泥段施工。施工及监控量测数据表明,该处置方案保证了围岩的稳定性和施工的安全性。

Taking the inclined Karst Section of Qiganshan tunnel of Chengkai Expressway in Chongqing as the research background,a comprehensive advanced geological prediction system or tunnels by means of TSP,GPR and multi-function geological drilling,is established.Through this system,the unfavorable karst geological conditions in this section has been predicted accurately.A series of effective treatment measures have been taken to complete the construction of water and mud inrush section quickly and effectively.The construction and monitoring data show that the treatment scheme guarantees the stability of surrounding rock and the safety of construction.