论文部分内容阅读
以石武客运专线DK932+300~DK932+400路基注浆试验段工程为例,介绍岩溶区路基注浆施工工艺、注浆施工参数的选定、注浆效果检验和现场施工出现各种问题的处理方法。采用注水(压水)试验、验证钻孔和物探检测等方法,对注浆效果进行了检测。在实际施工过程中,通过先导孔探测溶岩发育的方法,将岩溶分为轻微溶蚀、一般溶洞和复杂溶洞3类,为客运专线岩溶路基的处理提出切实可行的施工方案。
Taking the project of grouting of DK932 + 300 ~ DK932 + 400 subgrade in Shiwu Passenger Dedicated Line as an example, this paper introduces the grouting construction technology of subgrade in karst area, the selection of grouting construction parameters, the test of grouting effect and various problems in site construction Approach. Water injection (water pressure) test, verification of drilling and geophysical methods such as detection, the grouting effect was tested. During the actual construction, the karst is divided into three categories: slight dissolution, general cave and complex cave through the method of detecting the development of lava by pilot hole, and put forward feasible construction scheme for the treatment of karst embankment in passenger dedicated railway line.