宜万铁路岩溶隧道释能降压关键技术与应用研究

摘要

Combined with the practice in dealing with the water-enriched and high-pressure cavity in karst tunnel construction along Yichang-Wanzhou Railway, the safety and economical & social benefit of energy relief and pressure reduction are analyzed. In addition, the key technical issues such as advanced detection of energy relief and pressure reduction, blasting design, firing order, internal and external drainage route design, cavity treatment after pressure reduction, and adjacent cavity isolation design are studied. With the research results, the risk of water disaster in karst tunnel is reduced, construction investment is saved and construction period is ensured.%结合宜万铁路岩溶隧道施工高压富水溶腔处理实践,分析了释能降压的安全性及经济、社会效益;并对释能降压的超前探测,爆破孔位设计、起爆顺序,洞内排水及洞外排水路线设计、释能降压后的溶腔处治及相邻洞室隔离设计等关键技术问题进行了研究.应用其研究成果施工,降低了岩溶隧道的突水风险,节省了工程投资,保证了建设工期.