摘要
提出了微量内错布置技术,将下分层回采巷道布置于距煤柱较近的次高应力区,并用预埋顶梁护顶、锚杆护帮技术支护巷道,解决了内错距离较大带来的回采效益低的问题。钢筋混凝土和钢管混凝土搭接顶梁具有良好的承载性能和韧性,在微量内错布置技术中用于顶梁可增大巷道净高度,解决了巷道高度低,不能满足工程要求的问题。
The technique of sparklet-inboard-type layout is put forward which can be used to lay out the gateroad in the bottom slicing to hypo-high stress area relatively near the coal pillar. The problem of depressing mining benefit due to the bigger inboard distance can be improved by using the roof beam and side bolts. Reinforced concrete and concrete-filled steel tube beams are used in the technique of sparklet-inboard-type layout to increase the available height of gateroad. As a result,the problem of the deficient height of the gateroad in the bottom slicing is resolved.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2002年第8期1253-1256,共4页
Chinese Journal of Rock Mechanics and Engineering
基金
原煤炭部一般项目资助课题(97-373)。
关键词
锚杆支护
下分层回采巷道
围岩
稳定性
钢管混凝土
inboard type layout,bolting,gateroad in the bottom slicing,stability of surrounding rocks,concrete-filled steel tube
