摘要
锚网支护目前在煤矿巷道支护中已经应用的十分广泛,但是锚网支护技术应用的关键条件是围岩能够提供足够的锚固力,在此基础上,才能施加较大的预紧力,充分发挥锚网支护的主动性。但是在现实应用中,某些比较破碎的顶板,尤其是过上分层采空区时,围岩比较松散,往往无法保证锚固力,在此种情况下,采用鸟笼锚索能够有效的解决这一问题,现在应用取得良好的应用效果。
The bolting wire mesh support has been widely used in mine roadway support at present. However, the key condition for the application of bolting technology is that the surrounding rock can provide sufficient anchoring force. On this basis, it can exert a greater pre-tightening force and give full play to the initiative of anchor net support. However, in practical applications, some relatively broken roof,especially over the stratified mined area, the surrounding rock is relatively loose, often can not guarantee the anchoring force. In this case,the use of birdcage anchorage cables can effectively solve the problem, now the application achieved good results.
出处
《价值工程》
2018年第4期135-137,共3页
Value Engineering
关键词
破碎带
锚固力
鸟笼锚索
fracture zone
anchoring force
birdcage anchorage cable
