So , the following questions such as : how to simulate the process of excavating and retaining of the deep foundation pit engineering , how to calculate and analyze the pressure and deformation of the surrounding soil , how to calculate and analyze the deformation of retaining structure in the course of excavating , how to predict the earth subsidence and the swelling of pit bottom , and how to predict the deflection of surrounding pipes in loess area , are all worth researching 黄土地区深基坑工程技术与理论研究尚处于起步阶段，因此如何对黄土地区深基坑开挖与支护过程进行模拟，对深基坑周围土体的压力、变形及支护结构的变形随基坑开挖过程所发生的变化进行计算与分析，对地表面的沉降和坑底的隆起、周围管线的变位进行预报则成为一个值得研究的课题。
