RESEARCH ON THE PROPERTIES OF ENGINEERING GEOLOGY OF SOFT ROCKS IN A COAL MINE

In this paper,taking Kongji coal mine as an example,the author researched the composion,water-physical properties,strength and deformation,rheological properties of soft rock in coal mine and the defor-mation of rock mass and so on engineering geological properties,analysed the major engineering geological problems of the tunnel which located in the soft rock,and put forward appropriate disposal suggestions.