medium-thick seam 中厚煤层
ultra thick seam 巨厚煤层
medium thick seam 中厚煤层
very thick seam 特厚煤层
soft thick seam 软厚煤层
thick seam roof 厚煤顶板
super thick seam 特厚煤层
extra-thick seam 特厚煤层
steep thick seam 大倾角厚煤层
With the continual progress of mining technology, the full-mechanized caving technique has been widely spreaded and applied in thick seam extraction in our country.
近年来,随着采煤技术的不断进步,我国煤矿厚煤层开采普遍推广应用综采放顶煤技术。
参考来源 - 综放沿空巷道稳定性分析及其混沌动力学评价·2,447,543篇论文数据，部分数据来源于NoteExpress
The paper states the present status of thick seam mining and safety technique in foreign country and technique level of that in China.
介绍了国外厚煤层开采和安全技术的现状，及国内厚煤层开采技术在国际上的水平。
Since 1980's, the full-mechanized caving technology for thick seam in China was rapidly developed with a significant technical and economic benefit.
80年代以来，我国的厚煤层综采放顶煤技术得到长足发展，并已取得显著的技术经济效益。
The paper provided the optimum roof support parameters of bolt support in soft thick seam. The applied projects have shown the efficiency of the support.
给出了锚杆(索)支护软厚煤顶板的优化支护参数，工程应用证实了其有效性。
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