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由于途经路段地貌地质条件复杂,加上连日雨雪天气,导致张花高速公路第二合同段老屋湾隧道在施工过程中已支护部分突发塌陷。通过对物理探测结果进行研究,综合分析了塌方产生的原因后提出了3种不同的处治方案。考虑到该工程的实际条件,最终采用路基方案对塌陷段进行处治,并详细介绍了各处治方案的处治流程。经处治后路段的施工状况良好,项目目前已全线贯通,证明该路基处治方案是合理可行的。
Due to the complex geomorphic conditions passing through the sections and the heavy rain and snowy weather, the old section Bay Tunnel of the second contract section of Zhanghua Expressway collapsed and collapsed during construction. Through the study of the physical detection results, a comprehensive analysis of the causes of landslides proposed three different treatment options. Taking into account the actual conditions of the project, the subgrade solution is finally used to treat the subsidence and the treatment flow of each treatment plan is introduced in detail. After the treatment of the construction of the road section is good, the project has now been completed throughout the project to prove that the subgrade treatment program is reasonable and feasible.