关键词: 回采巷道, 变形机理, 锚网索支护, 耦合支护, 控制技术

Abstract: Surrounding rock control of roadway is one of the inevitable problems in coal mining. The down crossheading of 2505 working face at Hengjian Coal Mine is in a fault zone. According to the field observation, the deformation and failure characteristics of surrounding rock were analyzed, and instability mechanisms were also revealed. The analysis indicates that the main causes of deformation and failure of surrounding rock are that the non-coupling states for the support system and rock mass. In order to solve the problem, a new technique that “bolt + anchor + mesh reinforcement + W-type steel band + channel steel” controlling surrounding rock of mining roadway by using the coupling supporting theory ,and parameter and procedure of supporting were optimized, The site monitoring and observations indicates that the technique has achieved the stability of minding roadway. Key Words: mining roadway; deformation mechanism; bolt-mesh-anchor support; coupling support; control technology?

Key words: mining roadway, deformation mechanism, bolt-mesh-anchor support, coupling support, control technology?