STUDY ON THE CONTROLLING TECHNIQUE OF COMPLEX ROOF OF THE ROAD DRIVEN ALONG THE GOAF IN THE SOFT COAL STRATA

According to the geology condition of the complex roof of the raod driven along the goaf in the Guhanshan coal mining.A kind of new support system called“circularly connected shed support”was designed.The support system has the character of shrink under some conditions.Meanwhile,this support system can support the large deformation.This support system was used at the complex roof of the road driven along the goaf in the soft coal strata;it can control the deformation of roadway and maintain the stability.The industrial test result indicates this support system can control the deformation and stability of the complex roof of the road driven along the goaf.