摘要
以塔山煤矿8204工作面为工程背景进行大采高综放沿空掘巷的试验研究,通过在现场进行钻孔窥视、巷道表面位移监测、与留大煤柱时期掘进、回采巷道相比较等方法对8204试验工作面5204临空巷道矿压显现特征进行分析。现场试验表明,留6 m小煤柱时巷道处于应力降低区,可以有效控制巷道围岩变形。
Based on the engineering background of 8204 working face of Tashan Coal Mine, we experimentatly stuuy god - slcte entry driving in large mining height and fully mechanized caving mining. The mine strata pressure feature of gob - side entry driving in 8204 trial working face is studied by using different methods including borehole imaging, surface displacement of entry, compared with big coal pillar in tunneling and mining. The test shows that the gob - side entry is located in stress relaxed area when the coal pillar width is 6 m and roadway surrounding rock deformation is effectively controlled.
出处
《煤矿安全》
CAS
北大核心
2016年第1期192-195,共4页
Safety in Coal Mines
基金
国家自然科学基金煤炭联合基金资助项目(U1261207)
河南理工大学博士基金资助项目(648332)
关键词
大采高
综放开采
沿空掘巷
小煤柱
矿压显现特征
large mining height
fully mechanized caving mining
gob - side entry driving
small pillar
strata behavior characteristic
