摘要
在提出锚杆—锚索联合支护的基本原理和锚索工程特性的基础上,结合笔者在煤矿现场观察到的工人施工流程和监测到的实际支护效果,分析了锚杆支护失效的原因,揭示了锚杆—锚索联合支护的失效机理:主要是钢绞线各股钢筋受力不均,单根钢绞线已经破断时,部分钢筋未达到屈服极限,不能一齐"用力",并对煤矿改善锚杆—锚索联合支护的效果提出了几种初步方案。
Based on proposing the basic principle of combination support with bolt and anchored cable and property of anchorage engineering,with the workers＇ construction process observed in mine field by author and actual support effect monitored,analyzes the reason of bolting support vitiation,then proposes the vitiation mechanism of combination support with bolt and anchored cable.In order to improve the effect of the combination support with bolt and anchored cable,several preliminary scheme was proposed.
出处
《山西焦煤科技》
2011年第4期38-41,共4页
Shanxi Coking Coal Science & Technology
关键词
联合支护
锚索工程特性
失效
锚索
Combination support
Property of anchorage engineering
Vitiation
Anchored cable
