摘要
以矿井回采巷道为研究背景,通过锚杆-围岩(煤)的协调作用机理,对锚杆+短锚杆搭配支护形式和短锚杆+锚索联合支护形式进行数值模拟研究。结果表明:锚杆具有良好的力学性能,其延伸率可达到17%,相比锚索有着更大工程延伸率,锚杆此种特性保证了其能够提供适宜的支护力的同时,长短搭配的支护方式有着更为宽泛的有效支护区域,允许围岩有着最大范围的变形量。
In this paper, taking mining roadway as research background, through bolt and surrounding rock （coal） coordination mech- anism, numerical simulation study was carried out for support in the forms of bolt ＋ short bolt matching support and short bolt ＋ an- chor cable combined support. The results show that the bolt has good mechanical properties, and the elongation can reach 17%. Com- pared with the anchor cable, the project has a greater elongation. This feature of anchor ensures that it can provide appropriate support- ing force, and the long and short support form has an broader and effective support area to allow maximum deformation range of the surrounding rock.
出处
《煤矿安全》
CAS
北大核心
2016年第5期193-196,共4页
Safety in Coal Mines
关键词
大变形巷道
锚杆
锚索
支护稳定性
数值模拟
联合支护
large deformation roadway
bolt
anchor cable
support stability
numerical simulation
combined support
