摘要
在薄煤层连续采煤机房柱式采煤方法中,经常需要开掘宽高比大于4的矩形断面巷道或矿房(统称为扁宽断面巷道)。由于该种巷道高度小、跨度大,而且又必须采用锚杆进行永久性支护,使得巷道顶板的力学特征及其矿山压力显现等均具有特殊性。本文在总结分析现场矿压观测的基础上,论述了扁宽断面巷道的顶板力学状态及特征,讨论了锚杆的支护机理,并就岩层控制主要参数的确定提出了相应的看法与建议。
In mining thin seam with room-and-pillar method using continuous miner,roadways in rectangular cross-section are often excavated,and the ratio of widthover height of the roadways is greater than 4.Roof-bolting is used as permanentsupport in such roadways due to its low height and large span.The mechanicalproperty and behaviour of roof is of special character.The paper discusses the roofmechanical character of the wide roadway and analyzes the mechanism of roofbolting based on ground pressure measurement in site.Ideas and suggestions areput forward for determining the main parameters of roof control.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
1991年第3期44-51,共8页
Journal of China Coal Society
关键词
扁宽
巷道
矿压
锚杆支护
断面
roadways of flat and wide cross-section
behaviour of ground pressure
mechanism of roof bolting
