thick coal seam的意思|示意

By trial of fully mechanized caving in relatively thinner thick coal seam in Y. J. L. coal Mine, the problems in mining are raised and the ways to increase its unit production are discussed.

通过对云驾岭矿较薄厚煤层综放的开采实践，提出了开采中存在的问题，并对如何提高综放工作面单产进行了探讨。

This paper introduces condition, coal seam form change, distribute law of rock nature and rock phase, thick coal seam collect conditim in Hegang coal filed.

介绍了鹤岗煤田的地质情况，煤层空间形态变化，岩性、岩相的分布规律和厚煤层聚积条件。

The specific calculated data of mining technology in the steeply pitching medium thick coal seam and it's application effect in real construction are introduced.

介绍了急倾斜中厚煤层回采工艺的具体计算数据，以及在实际施工中的应用效果；同时介绍了采后沿空留巷的施工方法。

The Middle and Lower Jurassic with thick coal seam is widely distributed in Northwest China.

西北地区中、下侏罗统煤层广布，厚度较大；

Fully mechanized caving mining has became mining technology of high output and efficiency in thick coal seam mining.

综采放顶煤技术已成为厚煤层开采的高产高效采煤技术。

The selection process and approach on mining technology and equipment in gently inclined and inclined thick coal seam are discussed.

论述了缓倾斜、倾斜厚煤层采煤工艺及设备方案的合理选择过程、方法。