唐山市覆盖型岩溶发育评价与治理

Urban City Karst Terrain Evaluation and Mitigation A Case Study at Tangshan Times Square

唐山市是一个典型的覆盖型岩溶城市,而时代广场恰好地处唐山市中心,其底部基岩的岩溶作用对时代广场的建设有很大影响。通过对拟建场区的勘察资料的分析,分别从该场区的覆盖型岩溶发育评价、场区稳定性评价及分区、覆盖型岩溶地基稳定性评价以及岩溶治理等方面进行分析。其中,岩溶治理从方案提出、注浆范围及深度、注浆材料及施工和注浆检测都得到实践证明。

The City of Tangshan is a typical urban city underlain by the karst terrain and the Tangshan Times Square is at the center of the city. The development of the karst rock has a significant impact on the proposed construction near this area. The development of the karst bedrock, site stability and its evaluation, karst rock stability evaluation as well as the karst rock mitigation aspects are presented based on the site investigation data. Among these aspects, the mitigation of the karst rock, horizontal and vertical grouting limits, grouting materials and their QA/QC procedures have been verified by the applications in the actual construction projects.