According to the unfavorable geological conditions in Wuqiaoling, from landslide, dangerous rock and other aspects the difficulties in expanding planning caused by geological issues are analyzed; at the same time corresponding treatment measures are proposed according to the anticipated environmental geological problems in double line engineering.

The paper summarizes the engineering geologic and hydrogeologic condition along the Shanghai Chongming Tunnel and analyses the unfavorable geological condition and its solution in the site.

The unfavorable geological conditions around and in front of the working face in tunnel engineering will cause collapse of tunnel and surge of underground water resulting in tremendous causalities and equipment damage.

RS technology for bad geology distribution regularity of Shaanxi provincial freeway;

Research on the bad geology and collapse construction technology of Shang Hu-yu tunnel

Taking the pile foundation construction of Pangjiawan Bridge as an example, the article introduces in detail the comparison and selection of the foundation schemes, the treatment scheme of limestone cave and the optimized scheme of pile foundation construction, and preliminarily approaches the treatment scheme of the pile foundation under the condition of the bad geology.

The processing method to unfavorable geology of the hejiapuzi tunnel exit in yuanzhou,Guyuan,Ningxia;

The different kinds of everfrost and unfavorable geology are introduced,the considerations during the everfrost roadbed and unfavorable geology construction are given combined with Qumalai-Budongquan highway of Qinghai-Tibet Plateau;the measures taken in the everfrost roadbed construction are proposed.

Monitoring measurement,as one significant means to ensure security,optimize design,guide construction,its technological progress exerts a vital influence on unfavorable geology\'s tunnel construction.