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随高速铁路的不断发展,越来越多的高铁工程建设位于岩溶地区。为保证路基工程的长期稳定性,需要对岩溶进行注浆加固,现场岩溶注浆施工钻孔、注浆工艺(孔位、孔径、孔深、清孔,注浆顺序、压力、时间、注浆量)是否满足设计规范要求将直接影响到施工质量,另一方面,注浆压力过高、时间过长、注浆量过大又会引起临近既有路基地面隆起而影响铁路正常运行,甚至造成铁路交通事故。重点介绍如何通过有效措施来解决以上问题,控制好岩溶注浆对临近营业线影响。
With the continuous development of high-speed railway, more and more high-speed railway projects are located in karst areas. In order to ensure the long-term stability of subgrade construction, it is necessary to carry out grouting reinforcement of karst, drilling and grouting in on-site karst grouting (hole location, hole diameter, hole depth, clear hole, grouting order, pressure, time, grouting Quantity) meets the design specifications will directly affect the construction quality, on the other hand, the grouting pressure is too high, too long, too large grouting will cause the adjacent subgrade uplift and affect the normal operation of the railway, and even caused Railway accident. Focus on how to solve these problems through effective measures to control the impact of karst grouting on the adjacent business lines.