深基坑监测存在的一些问题及对策

Some Problems and Countermeasures in Deep Foundation Pit Monitoring

由于土体性质、荷载条件、施工环境的复杂性,以及目前设计理论的不成熟性,仅仅依据地质勘查资料和室内土工试验参数来确定的设计和施工方案,往往还有很多不确定性。因此,对于深基坑施工过程中引起的土体性质、支护结构内力、周边环境等变化进行监测成为必不可少的安全保障措施。通过对所在地区的一些深基坑监测项目进行分析,对深基坑工程监测资质、地下管线监测、深层水平位移监测以及巡视检查等方面存在的问题进行了探讨,并提出了一些对策和建议。

Because of the complexity of soil properties,load conditions,construction environment,and the immaturity of current design theory,there are always many uncertainties in the design and construction schemes determined solely on the basis of geological survey data and indoor geotechnical test parameters.Therefore,for the soil properties caused by the construction of deep foundation pits,the monitoring of internal force of supporting structure and surrounding environment has become an indispensable safeguard measure.Through the analysis of some deep foundation pit monitoring projects in this area,the problems existing in monitoring qualification,underground pipeline monitoring,deep horizontal displacement monitoring and inspection of deep foundation pit engineering are discussed.Then put forward to some suggestions as reference to related department.