沉井是一种较为成熟的施工工艺,当前也大量推广应用于西安城市市政建设,但是对于该地区土质条件下相应的土压力合理取值,是值得研究的课题。本文通过对建设在西安某沉积层地区工程的现场测试以及数据分析和多元线性回归,得出适用于该地区的沉井土压力计算理论公式,为以后类似工程提供宝贵意见。 Sunk well is a relatively mature construction technology, and it is widely popularized and applied to municipal construction in Xi’an at present. However, it is worth studying that the corresponding earth pressure reasonable value under the soil conditions in this area. In this paper, field test, data analysis and multivariate linear regression of engineering construction in a sediment area in Xi’an are carried out to draw the theoretical formula of caisson earth pressure calculation suitable for this area, which will provide valuable suggestions for similar projects in the future.