某工程勘察报告中关于地下水资料的问题分析

Analysis of Groundwater Data in a Project Investigation Report

某工程在勘察设计过程中,采用勘察工程结束后统一量测地下水位,由于在勘察深度范围内主要有上部的孔隙潜水和下部的承压水,在钻探过程中已将隔水层钻穿,两层地下水混合一体,最终量测得的地下水水位应为场地的混合水位。采用混合水位将会对设计人员造成误导,特别是当有深度较大的地下建构筑物时,在突涌稳定性验算时,利用混合水位容易引起验算失真,有可能造成实际中可能不会突涌的却采用了大量防突涌措施,使工程成本增加。

A project in the survey and design process, the investigation after the end of the project unified volume measurement of underground water level, due to the pressure within the range of the depth of investigation mainly in the upper part of the pore phreatic water and the lower part of the water, in the process of drilling has aquifuge drill wear, two layers of groundwater are mixed together, the final volume measurement of groundwater water level should be as the site of the mixing water level. The mixed water will be misleading to the design personnel, especially when the depth of large underground structures, in the sudden surge stability checking, using mixed water easily lead to checking distortion may cause actual may not pouring has adopted the large number of anti inrushing measures, increase the cost of engineering.