基本解釋[能源科學技術]急傾斜煤層大傾角煤層英漢例句雙語例句There are some problems on pillar mining of rock cross-cut in steep coal seam, such as bad job environment, high working intensity, low coal recovery ratio etc.急傾斜煤層石門煤柱開采存在作業(yè)環(huán)境差、勞動強度大、煤炭回收率低等問題。First, based on similar material model test, top coal cave-in characters in steep and thick seam were studied as well as failure law of main roof and features of surface subsiding.首先利用相似模擬實驗研究了急斜特厚煤層頂煤的冒落特征、頂板的破壞規(guī)律，以及地表下沉的特點。steep coal-seam更多例句詞組短語短語steep -inclined super-thick coal seam 急傾斜持厚煤層steep coal-seam更多詞組專業(yè)釋義能源科學技術急傾斜煤層From these views, through phenomenon experiment theory thought mode, be based on ideal loose body and random medium theory, this thesis make study on rule of steep coal seam mining step by step.基于以上認識,本文通過維象、實驗、維理思維模式,以理想松散體模型、隨機介質理論為基礎,逐步研究急傾斜煤層開采地表移動規(guī)律。大傾角煤層