喀斯特地质复杂施工环境深基坑内无空间降水控制技术

Control Technology for Spatial Dewatering in Deep Excavation of Karst Geological Complex Construction Environment

云南作为高原喀斯特地质集中分布区之一,其明显的特征就是溶洞多。罗平县妇幼保健计划生育服务中心综合楼建设工程,其所处场地岩溶洞隙、节理、裂隙较发育,场地岩溶地貌特征明显,且场地水位较高,周边全是居民住宅楼,施工环境复杂。为此,在工程建设中,根据现场溶洞的发育情况、水位情况及周边施工环境情况进行分析,并对地基基础施工中的涌水、降水控制进行研究,制订了相对应的技术措施,达到了基础工程无涌水和无渗漏的目标。

Yunnan,as one of the areas with concentrated distribution of karst geology on the plateau,is characterized by numerous karst caves.The construction project of the comprehensive building of the Luoping Maternal and Child Health and Family Planning Service Center is located in a site with well-developed karst caves,joints,and fissures.The karst landform characteristics of the site are obvious,and the water level of the site is high.The surrounding areas are all residential buildings,and the construction environment is complex.Therefore,in engineering construction,this paper analyzes the development of on-site karst caves,water levels,and surrounding construction environment,and studies the control of water inflow and dewatering in foundation construction.It has formulated corresponding technical measures,achieving the goal of no water inflow and no leakage in basic engineering.