深圳地铁一期工程位于深圳市的中心区域地带。地面上高楼林立,道路密如蛛网,广深铁路从这里驶过,广深高速从这里经过,布吉河从这里流过……地下地质情况就更加复杂了。深圳地处近海地带,隧道穿越富水砂层、粉质粘性土层、圆砾层、角砾层及中风化层,部分位于全风化、强风化花岗 Shenzhen Metro Phase I project is located in the central area of ​​Shenzhen. The ground floor of high-rise buildings, the road dense as cobwebs, Guangzhou-Shenzhen Railway passed from here, Guangzhou-Shenzhen high-speed from here through the Buji River flow from here ... underground geological conditions even more complicated. Shenzhen is located in the offshore zone, the tunnel through the water-rich sand, silty clay, round gravel, breccia and the weathering layer, part of the full weathered, strong weathered granite