岩溶隧道斜井突泥涌水综合超前地质预报技术应用  

APPLICATION OF COMPREHENSIVE ADVANCE GEOLOGICAL FORECASTING TECHNOLOGY FOR KARST TUNNEL INCLINED SHAFTS WITH SUDDEN MUD AND WATER SURGES

作　　者：李东记 Li Dong-ji

机构地区：[1]中铁十五局集团第四工程有限公司,河南郑州450000

出　　处：《建筑技术开发》2023年第7期101-104,共4页Building Technology Development

摘　　要：云贵高原隧道施工常遇岩溶、断层破碎带等不良地质灾害给施工安全、进度等带来极大影响,而采用单一超前探测方法不准确、不清晰,无法保证施工安全和精准指导施工。提出采用“多种物探手段+钻孔摄像”超前地质综合探测方法,探测技术包括地质雷达三维探测技术、数字化多要素隧道超前地质CT技术和长距离超前水平钻孔孔内成像技术,根据物探结果探测出掌子面前方溶洞溶腔富水位置等,再利用钻探孔内成像结果直接观测,准确探明前方不良地质情况,最后制订具有针对性的施工方案。The construction of tunnels on the Yunnan-Guizhou plateau often encounters karst,fault zones and other adverse geological hazards,which have a great impact on construction safety and progress,while the use of a single overdetection method is not accurate and clear,and cannot ensure construction safety and accurate guidance construction.To this end,it is proposed to adopt the“multiple means of physical exploration+borehole camera”overrun geological comprehensive detection method,detection technology including geological radar three-dimensional detection technology,digital multi-element tunnel overrun geological CT technology and long-distance overrun horizontal borehole imaging technology,according to the results of physical exploration to detect the water-rich position of the cavity in front of the palm face,and then The results of the drilling borehole imaging were then used for direct observation to accurately identify the adverse geological conditions ahead and finally to formulate a targeted construction plan.

关 键 词：岩溶隧道 斜井开挖 突泥涌水 物探手段 钻孔摄像 

分 类 号：U455[建筑科学—桥梁与隧道工程]