coal seam boundary 中文意思是什麼
coal seam boundary
解釋
煤層邊界-
On the illustration of mining in deeply inclined coal seam under buildings in muchengjian colliery in beijing, the confirmation method of coal pillar dimension and the united layout of pseudo - dip strip pillar and boundary pillar were put forward to provide theory foundation for the control of surface movement and subsidence in the mining of deeply inclined coal seam
摘要以北京木城澗煤礦大臺井建築物下壓煤開采為例,提出了急傾斜煤層開采條件下條帶煤柱尺寸的確定方法和傾斜條帶煤柱與邊界煤柱相結合的條帶布置方案,為急傾斜煤層開采地表沉陷控制提供了理論依據。
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