摘要
基于施工安全、方便,以及降本增效的目的,以下盘沿脉巷道(断面4.7×3.7,1/4三心拱)为例,在Ⅳ级和Ⅲ级围岩条件下,对阿舍勒铜矿喷锚网支护的2个主要参数(喷层厚度及锚杆间排距)进行了优化研究。结果表明,Ⅲ级围岩条件下,合理的锚杆间排距为1.0 m×1.0 m、喷射混凝土厚度60~80 mm;Ⅳ级围岩条件下,合理的锚杆间排距为0.9 m×0.9 m、喷射混凝土厚度80 mm。研究成果可在保证矿山安全开采的前提下,为矿山节约成本、创造经济效益。
In order to ensure safe and convenient operation,as well as increase efficiency while cutting cost in the deep mining ol Ashele Copper Mine,two main parameters ol shotcrete-bolt supporting in Ashele Copper Mine were optimized based on the conditions of class IV and class III surrounding wall for the footwall of headings along veins(with section of 4.7 x 3.7,1/4 three-centered arch).Results showed that it is rational arrangement with rock bolt spacing at 1.0 m X 1.0 m and shotcrete thickness of 60~80 mm for class III surrounding w all,and rock bolt spacing at 0.9 m X 0.9 m and shotcrete thickness of 80 mm for class IV surrounding wall.Such research result can bring economic benefit to the mine by cutting cost while ensuring safe mining operation.
作者
覃敏
文兴
尚振华
QIN Min;WEN Xing;SHANG Zhen-hua(Changsha Institute of Mining Research Co Ltd,Changsha 410012,Hunan,China;Sate Key Laboratory of Safety Technologies for Metal Mines,Changsha 410012,Hunan,China)
出处
《矿冶工程》
CAS
CSCD
北大核心
2018年第4期22-26,共5页
Mining and Metallurgical Engineering
关键词
埋深
岩体
巷道
喷锚网支护
支护参数
成本
burial depth
rock mass
heading
shotcrete-bolt supporting
support parameters
cost
