地质雷达超前地质预报在马口排隧道的应用研究  

Geological Radar Application in Geological Prediction of Makoupai Tunnel

作　　者：李龙 Li Long

机构地区：[1]中铁十四局集团第二工程有限公司,山东泰安271000

出　　处：《建筑技术开发》2018年第16期115-116,共2页Building Technology Development

基　　金：国家自然科学基金(41372289)

摘　　要：岩溶地区隧道施工过程中难免会遇到溶洞、断层及暗河等不良地质环境,容易导致地表下沉、隧道塌方、突水、突泥(沙)等灾害。通过超前地质预报,可以获得掌子面前方地质异常体的位置、产状、以及地下水、CH4等数据,及时进行施工方案调整,保证施工安全。在地质雷达法的探测目的、探测原理、探测特点等基础上,以广东省龙怀高速公路马口排岩溶隧道为工程背景,将地质雷达检测技术应用于隧道右线出口K226+355～K226+330里程段的超前预报,通过对地质雷达图像进行分析,对地质雷达超前预报结合实际开挖结果进行对比研究,可知地质雷达的预报结果与实际开挖结果基本吻合,地质雷达的预报准确率高,对于其他岩溶隧道超前地质预报具有一定的参考意义。It will inevitably encounter bad geological environment, faults and karst cave underground river tunnel construction in karst area, easily lead to surface subsidence, tunnel collapse, water bursting mud （sand） and other disasters. Through the geological forecast, can get in front of the face of geologic abnormal body position, occurrence, and groundwater, CH4 data, timely adjust the construction plan, ensure the safety of construction. In the detection of purpose, geological radar detection principle, detection characteristics on the basis of Guangdong province highway Longhuai tin karst tunnel as the engineering background, the forecast of application of geological radar detection technology in tunnel right line exit K226＋355-K226＋330 section, through the analysis of geological radar image, based on GPR the prediction results were compared with the actual excavation, research shows that the prediction results of geological radar are basically consistent with the actual excavation results, geological radar forecast accuracy for other karst tunnel geological prediction has certain reference significance.

关 键 词：岩溶地区 超前地质预报 地质雷达 地质异常体 

分 类 号：U414[交通运输工程—道路与铁道工程]