This paper mainly researches on the technique of draining long distance pressure relief gas in bed plate tunnel under the circumstance of mining protective coal seam.
本论文主要是针对远程下保护层开采条件下，对底抽巷上向穿层钻孔抽放远程卸压瓦斯技术进行了深入的研究。
The paper researchs the principle of protective seam mining, hydraulic slotting method and executing-digging technology to avoid risk of coal-gas outburst, and its practices in coal mine.
通过分析近距离保护层开采、水力掏槽法及边抽边掘技术防治煤与瓦斯突出原理及实践应用，从而有利于煤与瓦斯突出矿井选择合理有效的防突技术。
In solving the problem of deformation in surrounding rocks of the overlying coal entry caused by upper protective seam mining, reinforcing the surrounding rocks by grouting is a feasible method.
为了解决下保护层开采对上覆煤层巷道围岩变形的影响，采用注浆加固巷道围岩是一种可行的方法。
Numerical simulation was conducted using UDEC3.0 for the movement of overlaying strata and fracture development caused by the mining of upper protective layers of coal seams with close quarters.
本文利用UDEC3.0软件对近距离上保护层开采导致的覆岩移动及裂隙发育过程进行数值模拟。
Modern mining bio-technology is a kind of environmental protective high-efficiency new technology of utilizing mining resources.
现代矿业生物技术是一种环境友好的矿物资源高效利用新技术。
Simulation results may bring forward reasonable Suggestions for the design of protective layer mining and relief-pressure gas drainage.
模拟结果可为保护层开采及被保护层卸压瓦斯抽采设计提供合理建议。
The field experience shows that the protective system has good stability and reliability, and will be of great applied value in mining industry.
现场运行表明该保护系统性能稳定，动作可靠，具有重要的应用价值。
Discussed rock mass gravity collapse mechanism caused by under ground and overburden failure and surface settlement disaster, offered some underground mining and surface protective measures.
论述了地下矿层开采引起的岩体重力变形机理和造成的覆岩破坏、地表沉陷等灾害，提出了井下开采和井上防护的技术措施。
The protective system of traditional MTS is made up of schism organs, but framework is complex and reliability is rather bad, which badly impacts the running stability of coal mining face.
传统型移动变电站综合保护系统大都采用分立元件实现，结构复杂，可靠性差，对采区工作面的稳定运行造成了很大影响。
On the basis of the above research findings, new protective measures concerning buildings in mining area are proposed and application study of practical case is conducted.
基于研究成果，本文提出了采动区建筑物保护的新措施，并进行了实例应用研究。
The feasibility of the protective coal pillar mining in the artificial inclined steep drift in the thick (ultra thick) coal seam of a large slope is discussed.
论证了急倾斜厚(特厚)煤层伪斜上山保护煤柱回收的可行性。
The influence factor of spontaneous ignition on coal seam mining and protective measures in Yangquan mine No. 3 shaft are approached.
分析了阳泉矿区三矿井田煤层开采对自燃着火的影响因素，探讨了预防煤层的自燃着火的开采技术措施。
The reasonable position of the upper protective seam workface is chosen by comparing the distressing effects of the twice simulation experiments of mining the upper protective seam.
比较两次开采上解放层模拟试验的卸压程度，确定了上解放层工作面的合理位置；
The reasonable position of the upper protective seam workface is chosen by comparing the distressing effects of the twice simulation experiments of mining the upper protective seam.
比较两次开采上解放层模拟试验的卸压程度，确定了上解放层工作面的合理位置；
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