| The paper carefully analyzes bolt supporting system, and measures the parameters of coal wall rock in Fuxin diggings. According to the theory of bolt supporting and the character of coal wall rock, the paper discusses the selection of supporting method, optimize and design the break, management of supporting construction and quality, examination of supporting system and regulation of parameters etc. According to practice experience of Fuxin mine in five years, the paper analyzes the existent issues coal roadway. Through supporting design and engineering practice of relax complex roof rock, the paper thinks it is important for supporting of coal roadway to select the break shape, way of supporting and strict construction step. |
