走向长壁钻爆法施工单一煤层切眼实践应用
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摘要
本矿一直以来单一煤层采煤工作面的切眼均为二次成巷,即采用"先中央导硐后对等下扩"的方法施工。此方法施工斜长为180m、宽6m、高2.7m的切眼工期至少为80天(三个圆班组,每班1.5m,每天4.5m)。若采用先偏导硐后走向长壁钻爆法施工单一煤层切眼,则工期缩短为43天,节省了长达37天的时间,对于缓解本矿采煤工作面接续紧张有着显著地效果。
The eye cutting of the single coal seam coal mining face has been the secondary roadway, which is constructed by the method of "first central guiding and then equal expansion". The construction period of eye cutting with an oblique length of 180 m, a width of 6 m and a height of 2.7 m by this method is at least 80 days(three round shifts, 1.5 m per shift, 4.5 m per day). If the single coal seam eye cutting are applied to the method of first partial guide and then along strike longwall drilling and blasting method, the construction period is shortened to 43 days, saving up to 37 days, which has a significant effect on alleviating the continuous tension of the coal mining face.
The eye cutting of the single coal seam coal mining face has been the secondary roadway, which is constructed by the method of "first central guiding and then equal expansion". The construction period of eye cutting with an oblique length of 180 m, a width of 6 m and a height of 2.7 m by this method is at least 80 days(three round shifts, 1.5 m per shift, 4.5 m per day). If the single coal seam eye cutting are applied to the method of first partial guide and then along strike longwall drilling and blasting method, the construction period is shortened to 43 days, saving up to 37 days, which has a significant effect on alleviating the continuous tension of the coal mining face.
引文
[1]中国煤矿安全监察局.煤矿安全规程[M].北京:煤炭工业出版社,2016.
[2]杨奎,董飞,张亚敏,张忠宇,黄俊.城市大跨双连拱隧道钻爆法施工关键技术研究[J].公路交通技术,2018(S1).
[3]王孝贤,郭健,原朝林,王南.隧道机械化钻爆法施工特点及应用研究[J].工程建设与设计,2018(19).
[2]杨奎,董飞,张亚敏,张忠宇,黄俊.城市大跨双连拱隧道钻爆法施工关键技术研究[J].公路交通技术,2018(S1).
[3]王孝贤,郭健,原朝林,王南.隧道机械化钻爆法施工特点及应用研究[J].工程建设与设计,2018(19).