Soft rock alley of construction technology are discussed of the first coal of Wujianfang in Inner Mongolia

Three wellbore in soft rock in construction of the first coal of five jian fang, Tells the encountered in the construction process of the weak dilatability layers, In the construction of appear tunnel deformation, The larger of displacement of phenomenon, Aiming at this phenomenon is analyzed,Summarizes the construction process of experience, To take corresponding measures, just smoothly through the soft rock section。