摘要
根据+786m水平井底车场内巷道和硐室围岩遇水泥砂化性状,对其进行了物理力学性质试验、物相成分化验及锚杆拉拔力检测,在此基础上分析了巷道出现变形破坏的原因,并采取了以"锚带网索喷"为初始支护、"全封闭的U29型钢棚+反底拱"为永久支护,则该支护实施后,确保了车场内巷道和硐室的有效控制。
According to the properties of mud-sand surrounding rock of roadway and chamber in presence of water in ＋ 786m horizontal shaft bottom, the physical mechanical property test, the phase component assay and anchor pullout test are conducted, and based on them, the causes of deformation and failure of the roadway are analyzed, and then the method of ＂bolt-cable supporting, steel strip, metal mesh strengthening and concrete spraying＂ is taken as the initial support, and the ＂fully closed U29 type steel shed and inverted arch＂ as the permanent support. After the scheme is implemented, the effective control of roadway and chamber within the shaft bottom is ensured.
出处
《中国煤炭》
北大核心
2013年第10期50-52,87,共4页
China Coal
关键词
巷道支护
松软岩层
锚杆支护
锚索支护
U29型钢棚支护
注浆
shed support, roadway support, soft rock, bolt support, anchor grouting cable support, U29 type steel
