The main engineering geological problems are as follows:soft soil, powder soil, welled soil (rock) , landslip, breakdown talus and broken weak rock mass.
主要的工程地质问题有：软土、粉土、膨胀土（岩）、滑坡、崩塌岩堆、岩溶、破碎软弱岩体等。
The unconsolidated marine soft soil has very weak engineering geological properties which is widely distributed in the coast area of China.
我国沿海地区，广泛分布着性质极为软弱的近代沉积的欠固结软土。
Results showed that structural soft clay displayed special engineering characteristics relatived to non- structural soil and structural weak soil.
相对于非结构性土和结构性较弱的土，结构性软土表现出特殊的工程特性。
In the course of construction, the free pore water in the weak soil of highway foundation is seldom discharged immediately, and the excess pore water pressure comes into being.
软土高填方路基施工过程中，土内自由水难以及时排出，产生超静水压力。
The article studies on the questions in soil nail support of the weak foundation pit and puts forward countermeasures from the construction measures and deformation-control measures.
文章从软土层基坑应用土钉支护措施存在的问题出发，从施工技术措施和控制变形措施两个方面着手，研究了软土层基坑应用坑支护存在的问题和对策。
The article studies on the questions in soil nail support of the weak foundation pit and puts forward countermeasures from the construction measures and deformation-control measures.
文章从软土层基坑应用土钉支护措施存在的问题出发，从施工技术措施和控制变形措施两个方面着手，研究了软土层基坑应用坑支护存在的问题和对策。
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