1) a board and pillar mining method 残柱式开采法2) straight ends and walls 柱式开采法3) room-and-pillar mining method 房柱式开采法4) pillar and post work 柱式开采 例句>> 5) battery breast method 房柱式留煤开采法6) open-end pillar method 开端式煤柱回采法...
FIELD: mining industry; applicable in mining of sheet minerals. SUBSTANCE: pillar-and-board mining method includes mining of pillar by full advance of powered mining complex with subsequent separation of the complex into two parts with their turning through 180 deg and mining of adjacent pillars ...
board and pillar 美 英 un.房柱式开采法英汉 un. 1. 房柱式开采法 例句 释义: 全部,房柱式开采法 更多例句筛选 1. Application of Pedrail-walking Type Hydraulic Supports in Board and Pillar Mining method 房柱式开采中履带行走式液压支架的应用 www.ilib.cn©...
room-and-pillar method 砂充填采空区。由于胶结充填费用比尾砂充填费用要高得多,因此,矿房尺寸取得比人工柱尺寸大得多人1_顶柱和底柱常用混凝上或钢筋混凝土构筑,构筑时间也先于矿房回采。 月一月卜一CB浑爵翩。C一:一 卜-〔、}豁痴资 8 图4底盘漏斗房柱采扩法 1一阶段运愉平巷;2采准探矿平巷;3人行溜碴...
(mining engineering) A timber staging on the floor of a stope for setting a rock drill; the stage is tilted so that the bottom holes can be drilled in the same inclined direction.McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies,...
Profit from operations Other gains Interest and other income Finance costs Income from investments accounted for using the equity method Taxation Profit attributable to equity shareholders 2021 RMB million 117,963 8,257 16,729 2,679 11,914 35,878 116,148 2020 RMB million 112,734 5,602 14,341...
We used secondary data from 2010 to 2022 to conduct an empirical analysis using the system Generalized Method of Moments (GMM) and Fixed Effect (FE) estimators. This study found a positive and significant relationship between board independence, sustainability committee, gender diversity, managerial ...
The first part of the article contains a literature review, including a presentation of the ESG concept, the current situation in the Polish power industry and the place and importance of the analyzed entity in the PGE concern. The second part presents the method of the conducted research and ...
The calculation method of average carbonization speed at each measuring point is shown in Equation (2). Table 2 shows the initial thickness, remaining thickness, carbonization rate, and average carbonization speed of each sample at different measuring points. According to the information in Table 2,...
He had put a small, thin leaf of almost white iron, coated in his blood, in her hand and held it there. Before she could even ask him what had happened, he made her vow to not attempt vengeance, but to instead make the journey to Boughsoleil and to study the path of the...