摘要
通过对综放工作面采场应力分析 ,运用锚杆支护围岩强度强化理论 ,提出了综放工作面沿空掘巷围岩控制机理 .树脂加长锚固高强锚杆支护能提高围岩力学参数 ,提供较高的支护阻力并具有较大的延伸率 ,适应综放工作面沿空巷道高应力和大变形特点 .采用高强锚杆支护系统能有效地保持综放沿空掘进巷道的稳定 ,并成功地应用于工程实践 .
The mechanism is put forward that is controlling surround rock of gateway driven along goaf in fully mechanized top coal caving face based on analysis of stress distribution around a coal face and theory of consolidating rock strength with bolt support. The stability of the surround rock is guaranteed by high strength bolt support bonded with resin grout. The high strength bolt is adaptive to high stress and large deformation of surrounding rock, because it can increase the strength of the surrounding rock, provide with high resistance support and big percentage elongation. Ended with an engineering instance, a new kind of successful supporting technique is introduced.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2000年第5期478-481,共4页
Journal of China Coal Society
基金
国家自然科学基金!重点资助项目 ( 59634 0 30 )
关键词
综放工作面
沿空巷道
围岩控制
锚杆支护
fully mechanized top coal caving face
gateway driven along goaf
control surround rock
high strength bolt
