摘要
运用突出机理的球壳失稳理论结合现场实际情况分析了产生延期突出的各种原因,并根据分析的结果进行了延期突出的模拟试验.结果证明,突出是由具有突出危险的软煤突然暴露造成的,而延期的原因则是阻挡层的蠕变破坏或者破碎带的逐渐破坏引起突然冒落造成的.二者的耦合导致延期突出的发生.
Combining the principle of the
“spherical shell losing stability” theory with the actual conditions of coal mine, every cause
which brings about delay outburst has been analysed.According to the analysis, the simulated
tests of delay outburst are carried out. The results show that coal and gas outburst is caused by
outburst coal when it is uncovered abruptly, and the reason of delay is that there is a creep
break occurring in the barrier layer or a caving caused by the gradual break of fracture zone, the
coupling of outburst and delay results in delay outburst.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
1999年第4期373-378,共6页
Journal of China Coal Society
基金
国家自然科学基金