摘要
基于煤与瓦斯突出机理,构建了煤巷掘进工作面煤与瓦斯突出的简化力学模型,通过力学分析,提出了以瓦斯压力为主要指标的突出判式。根据突出预测指标K1与瓦斯压力之间的关系,推导出突出敏感指标K1的临界值。结合山西华晋焦煤有限公司沙曲煤矿的实际情况,确定了沙曲煤矿突出敏感指标K1的临界值为0.5,煤层出现构造破坏时,临界值为0.3。
Based on the coal and gas outburst mechanism,simplified the outburst mechanical model of coal roadway heading face.Through mechanical analysis,put forward by the gas pressure as the main index of prominent sentenced to type.According to the relation of the predict index K1 and gas pressure,deduced the critical point K1.Combining the pratice of Shaqu Coal Mine of Shanxi Huajin Coking Coal Co.,Ltd.,usually critical value is 0.5,specially,when the coal steam is damaged,the standard is 0.3.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2011年第5期808-811,共4页
Journal of China Coal Society
关键词
煤与瓦斯突出
预测指标
临界值
力学模型
coal and gas outburst
prediction
critical value
mechanics model
