【摘要】 隧道出洞口附近易出现塌方、冒顶等地质灾害,为防止这类灾害的发生,施工前必须对隧道前方地质情况做出准确判断.文章分别介绍了隧道地震波法(tunnel seismic prediction,TSP)和地质雷达法(ground pener rating radar,GPR)两种常用的地质预报方法,并综合应用这两种方法对某隧道明洞段进行了探测.根据超前地质预报的探测结果,确定地面冲沟所在位置及掌子面前方岩体含水情况,并做出该区域不会揭露明洞的判断;同时结合地质雷达对拱顶进行连续跟踪探测,得到了顶板的厚度.最后,探测结果与实际开挖情况进行了对比验证.通过综合地质预报的手段,能够较准确的探明掌子面前方的地质情况,指导工程施工.更多还原

【Abstract】 Collapse or roof fall usually occurs at the open-cut part.To solve this problem,comprehensive geological prediction is necessary. The basic principles of two widely used geological prediction methods(TSP and GPR) were introduced.These two methods were applied in detection of an opencut tunnel.The basic position of the gully and the water cut condition were determined according to advanced geology prediction using TSP203.An opposite conclusion was obtained that opencut tunnel would not show here.In addition,the thickness of bedrock was tracking detected using GPR,and a comparasion with the excavation was given.更多还原