我们必须有效地减少向大气排放瓦斯，保护人类赖以生存的有限空间。
We must effectively reduce the discharging volume of gas into the air, to protect the limited space on which human beings depend to live.
开采煤层气资源，同时从根本上预防煤矿瓦斯灾害事故的发生，保护大气环境是人们追求的理想目标。
To exploit methane resources, prevent from the occurrence of the mine gas accident by the root at the same time and protect the atmosphere environment are ideal target that the people pursue.
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。
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.
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。
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.
前言：介绍了在被保护层底板巷向保护层工作面施工下向穿层钻孔，抽采保护层工作面采空区瓦斯的具体做法，并对取得的效果进行了分析总结。
This paper introduced the technical of using drilling downward hole from working surfale in protective coat bottom tu pull out goaf gas, and the effects were analysed and summarized.
保护层开采时，对被保护层的瓦斯治理是一项非常重要的工作。
When the protective coal seam is mined, the gas management on the protected coal seam is a very important job.
突出煤层卸压后用钻孔瓦斯涌出初速度进行工作面预测和效果检验时经常超过突出临界值，造成开采保护层后煤层突出危险性更大的现象。
The main factors affecting the initial speed are studied and the causes of initial speed from borehole gas emission often exceeding limit theoretically explained.
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。
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。
Simulation results may bring forward reasonable Suggestions for the design of protective layer mining and relief-pressure gas drainage.
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