铁路隧道水平超前地质预报钻探技术探讨及实践

Discussion and Practice of Drilling Technology of Horizontal Geological Prediction for Railway Tunnel

铁路隧道施工需要对开挖前方隧道地质情况快速、准确预报,以便技术人员采取有针对性的方案和措施。作者在分析目前钻探取心工艺的基础上,结合隧道施工的实际情况,提出采用冲击钻探取心工艺技术和水平绳索取心工艺技术来实现对隧道水平超前地质预报取心,通过对钻机、钻具、器具的改进满足了隧道水平超前地质预报取心要求,并在多个工程进行了应用。

This study uses the techniques of horizontal wire coring and impact drilling coring to make a horizontal geological prediction for railway tunnel and meets the requirements of tunnel level geological prediction by means of improving the drilling rig and drilling tools.