thin out of coal seam

常見(jiàn)例句

Based on an example from Datong Coalmines Group, the paper analyses possibility and usage of heavy plow under the conditions of thin seam coal face with Two Hard Roofs and gives out some proposals.
介紹了新型刨煤機(jī)的主要性能和結(jié)構(gòu)特點(diǎn)以及使用條件，結(jié)合晉城礦區(qū)煤層賦存條件，論證了刨煤機(jī)在晉城礦區(qū)使用能大幅度地提高綜采工作面煤炭塊率。
Therefore, the conventional staggered distance model of ultra-close thin coal seam group during combined mining is put forward; and the theoretical research and physical simulation are carried out.
因此提出極近距離薄煤層群聯(lián)合開(kāi)采常規(guī)錯(cuò)距開(kāi)采模型，并進(jìn)行理論和物理模擬試驗(yàn)研究。