名称解释 三软煤层指煤矿开采中遇到的：软的顶板岩层、软的主采煤层和软的煤层底板岩层，一般情况下，具有三软特征的煤矿煤层和顶底板均为软弱岩层。煤层裂隙发育，构造复杂。
三软煤层工作面瓦斯涌出规律及综合治理技术-中国煤矿安全生产网 关键词: 三软煤层 瓦斯涌出规律 瓦斯治理[gap=895]Keyword: three soft coal seam;gas emission law;gas control
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三软厚煤层开采技术应用_【能源与节能杂志社官方网站】 关键词：三软煤层;顶板控制;合层开采 [gap=686]Keywords: three-soft seam; roof control; sealing layer mining
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三软"煤层 three soft" coal seam
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文章通过对永华煤矿“三软煤层”煤巷矿压规律进行分析，提出了支护方案。
This paper puts forward support plan through analyzing strata behavior regularity of coal roadway in seam with soft roof, soft coal and soft floor.
随着我国煤矿开采越来越趋向深部，煤矿软岩问题便越来越突出，特别是三软煤层回采巷道的围岩控制问题。
Along with the mines toward deep level in China, the problems of soft rock are becoming more and more outstanding, especially controlling surrounding rock of three-soft coal seam.
前言： 通过对“三软”不稳定煤层采煤工作面瓦斯来源的分析，介绍了采用顶板岩石钻孔抽放解决瓦斯问题的原理和方法。
Based on the analysis of gas source at the working face with "three-soft" unsteady coal seam, the authors introduce the principle and method of gas suction by roof-rock drilling.
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