某矿无底柱分段崩落法采场的爆堆通风

发布时间：2018-02-16 21:36

本文关键词： 高寒地区爆堆通风无底柱分段崩落法通风方式　出处：《金属矿山》2017年01期 　论文类型：期刊论文

【摘要】：甘肃某铁矿因无底柱分段崩落法独头回采而通风困难,加之受高寒地区特殊地理位置的影响,井下通风设备运行效率低,难以提供充足的新鲜风流,进一步恶化了井下作业环境。以甘肃某铁矿为例,首先对相同开采深度不同水平厚度覆盖岩层、不同开采深度相同水平厚度覆盖岩层爆堆通风风速进行了现场测定,证明爆堆通风的可行性,并对爆堆通风在该矿山采场中风流流动规律进行分析。其次,结合当前矿山结构参数以及现场实测数据,针对不同通风阻力的开采时期提出2种爆堆通风方案。其一是利用采场进路进风,污风经爆堆直接排至地表,其二是采用2个分层同时退采,新鲜风流由下一分层进路进入,污风经爆堆直接回至上一分层采场进路,并排至回风巷。最后,指出了爆堆通风方案存在问题,并提出相应改进的措施。该矿爆堆通风的初步应用,对高寒地区无底柱分段崩落法采场通风具有一定借鉴意义。
[Abstract]:The ventilation of a certain iron mine in Gansu province is difficult because of the single-head mining by sublevel caving method without bottom pillar, and because of the influence of special geographical location in high and cold area, the operation efficiency of underground ventilation equipment is low, and it is difficult to provide sufficient fresh air flow. Taking a certain iron mine in Gansu province as an example, the ventilation wind speed of blasting pile of the same mining depth and the same horizontal thickness is measured in the field, first of all, the same mining depth and the same horizontal thickness cover the rock layer, and the same mining depth and the same horizontal thickness cover the rock layer. The feasibility of blasting pile ventilation is proved, and the flow law of blast pile ventilation in the mine stope is analyzed. Secondly, combined with the current mine structure parameters and field measured data, According to the mining period of different ventilation resistance, two kinds of blasting pile ventilation schemes are put forward. One is to use stope approach to enter wind, and the other is to use two layers to withdraw simultaneously, and the fresh air flow will enter through the next stratified road. The waste air is directly returned to the top of a stratified stope through the blast reactor and discharged to the return air roadway. Finally, the existing problems in the ventilation scheme of the blast pile are pointed out, and the corresponding improvement measures are put forward, and the preliminary application of the blasting pile ventilation in the mine is put forward. It has certain reference significance to the ventilation of stope with sublevel caving method without bottom pillar in alpine area.
【作者单位】：西南科技大学环境与资源学院;
【分类号】：TD724

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