目前,在新井建设中,岩巷掘进工程量一般约占总工程量的40%~50%,施工工期占35%~50%。
因此,提高岩巷掘进速度,对加速煤矿建设有非常重要的意义。
但我国岩巷掘进整体上表现为速度慢、工效低,影响了煤炭生产的合理接续。
本文分析了光面爆破技术在井巷掘进中应用的结果和作用;
边抽边掘技术在高瓦斯突出危险煤层掘进中的实践与应用
1·Major problems in roadway drivage are revealed based on an analysis of the current situation in this area, and technological solutions are recommended for the improvement.
通过对我国巷道掘进现状的分析,指出了当前存在的主要问题,进而提出了提高单进的技术途径。
2·Optimizing roadway arrangement way unceasingly, reducing the tunnel drivage ratio is an important task in the mine mining design process.
不断优化巷道布置方式,降低巷道掘进率,是矿井开采设计过程中的一项非常重要任务。
3·During the drivage of main-gate in long-wall face with fully mechanized caving mining, the gate is hard to support due to its loose and broken roof, large cross-section and long span.
在综采放顶煤工作面顺槽掘进过程中,由于顺槽煤层顶板松动破碎,并且顺槽采用矩形断面,顶板跨距较大,不利于巷道支护。
4·Based on laboratory experiments and in-situ observations, it has been proved that outburst of coal and gas in in-seam drivage is a chain reaction process of disc tensile fracture in a working face.
本文通过基础试验和现场观测,证明了煤巷掘进工作面煤与瓦斯突出是工作面煤壁盘形拉伸破坏的连锁反应过程。
5·The support with bolt and cable is a main way of roadway drivage.
锚杆锚索支护是巷道掘进的一种主要形式。