Application on secondary support technology in soft rock roadway

With the continuous extension of coalmining,the mining condition of Shanjia is getting worse.Severe deformation occurred in soft rock roadway made support difficult.According to the support theory and technology,secondary support was adopted in soft rock roadway of Eight Mining District.Good supporting effect was obtained through observations in field for several months.Sum up the experience from site,project technical method was put forward.The method can reduce repairing rate of roadways,ensure the continuous working of mining and bring remarkable economic social for Shanjia coalmine.