采矿与安全工程学报2012，Vol.29Issue(2)：203-208,6.
非软顶底板煤巷锚杆支护及围岩松动规律
Loose Regularity of Bolting and Surrounding in A Non-Soft Floor and Roof Gateway
摘要
Abstract
Analyzing the loose regularity of gateway surrounding is the base for optimum bolting. After analysis of the relationship between surrounding loose characteristics and bolting in non-soft roof and floor gateway, the paper calculates theoretically surrounding loose scope of non-soft floor and roof gateway, obtains the scheme of bolt-mesh-cable coupling supporting in non-soft roof and floor gateway, analyzes surrounding loose regularity of non-soft roof and floor gateway before and after bolting by numerical calculation, and monitors with drilling and detects with ultrasonic surrounding loose scope in test gateway. Results show that surrounding loose scope of non-soft roof and floor gateway lies in both two angles of roof and the middle of two sides. Two sides show semicircle destruction, roof saddle destruction. Surrounding loose scope reduces and surrounding stress transfers from two roof angles to deep in two floor angles along two sides after bolting. Bolt (cable) coupling supporting in roof and floor angles is favorable for stability of gateway surrounding.关键词
围岩松动范围/锚杆支护/数值分析/钻孔窥视/超声波Key words
surrounding loose scope/ bolting/ numerical analysis/ drilling peep/ ultrasonic分类
矿业与冶金引用本文复制引用
辛亚军,勾攀峰,贠东风,陈小绳..非软顶底板煤巷锚杆支护及围岩松动规律[J].采矿与安全工程学报,2012,29(2):203-208,6.基金项目
国家自然科学基金项目(50874037) （50874037）
陕西省岩层控制重点实验室重点项目(101-DGKY1401) （101-DGKY1401）
