1) three-soft"middle thick seam
"三软"中厚煤层
1.
Analysis on coal quality at light mining face in “three-soft”middle thick seam;
“三软”中厚煤层轻放回采煤质问题分析
3) soft thick seam
软厚煤层
1.
In order to solve the support difficulties of the mining gateway for the fully mechanized top coal caving mining face in soft thick seam of Zhenchengdi Mine,the numerical simulation was applied to the optimized study on the mining gateway support mode and the support parameters.
为解决镇城底矿软厚煤层综放开采工作面巷道支护难题,采用数值模拟对巷道支护方式与支护参数进行了优化研究,分析了工字钢、锚杆与锚索等不同支护形式对巷道围岩变形、应力分布及塑性区范围的影响,得出了采用锚网带与锚索支护软煤巷道的优化支护参数,并进行了现场试验,验证了所选择支护参数的可行性。
4) "three soft" unsteady thick coal seam
"三软"不稳定厚煤层
5) medium-thickness and high-thickness seams
中厚厚煤层
6) medium-thick seam
中厚煤层
1.
Selection of minning technology,support method and parameters of medium-thick seam is introduced.
介绍了中厚煤层一次采全高的回采工艺、支护方法和具体参数的选择,即工作面回采时不留底煤,增加煤炭回收率,对支柱布置形式进行改进,并在理论上进行安全系数验算。
补充资料：3300mm中厚板轧机(上海第三钢铁厂)
3300mm中厚板轧机(上海第三钢铁厂)
3300mm中厚板轧机(上海第三钢铁厂)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条