HSP法地质预报技术在坝陵河大桥西锚洞施工中的应用

Application of HSP Geological Forecast Technique in West Anchor Hole Construction for Balinghe Bridge

坝陵河大桥西锚洞区岩溶发育,为保证锚洞开挖质量和安全,采用HSP声波反射法超前地质预报技术对隧道锚洞施工掌子面前方的围岩地质条件进行探测,成功地指导了锚洞施工。通过对声波技术的基本原理、测试仪器及软件系统和测试方法介绍,以及测试结果的对比分析,验证了预报结果的准确性,表明该法在类似地下工程中具有广阔的应用前景。

Karst is developed in west anchor hole of Balinghe Bridge.In order to ensure excavation quality and safety,the geological conditions of surrounding rock in front of tunnel heading is detected by geological prediction technology using HSP sound wave reflection method,which has guided anchor hole construction successfully.Through introducing the basic principle,testing apparatus and the related software system,and testing method of sound wave technology,the forecast result is compared to the test result and the accuracy of forecast result is verified.It is indicated that this method can be widely applied in the similar underground engineering.