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...
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 开端式煤柱回采法补充资料:井筒煤柱开采 随着开采深度的增加,立井井筒和工业广场煤柱(见矿柱) 的压煤量越来越大。过去井筒煤柱一般留而不采;有时在矿井报废前另建提运井巷进行开采,此法...
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©...
网络释义 1. 房柱式开法 矿业工程... ... board and pillar method 房柱式开采法 board and pillar work 房柱式开法 board and wall method 房柱式开采法 ... feodora80.blog.163.com|基于19个网页© 2025 Microsoft 隐私声明和 Cookie 法律声明 广告 帮助 反馈...
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 ...
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Plant bar in wall and pillar:dry one hold in the original pillar or wall and fix panel by one steel bar. Corret and fix: use one guiding ruler to check and level correction. Plant bar in structure beam:drill one hole in structure beam and plant one ...
The two heatsinks are mounted over the Z87 PCH and the Impact Power module, both of which use a thermal pad as the TIM. Both heatsinks are held in place using the screw down method of retention, which I much prefer over the plastic push-pins. As you can tell by the second picture...
Width 24m to 56m,custom made Pillar Distance 4m/5m/8m/10m Gutter Height 3m/4m/5m/6m Roof Height 0.8m Main structure Main frame Hot Galvanized Steel Pipe Covering material 8-12mm polycarbonate Sheet Covering material life time 10-15 years Columns Size...
A laminated pillar (<B>1</B>) is composed of five lumber-boards (<B>4</B>) laminated and bonded together in the thickness direction. Each lumber-board <B>4 </B>has a first board portion (<B>5</B>) that is the portion positioned at the ground end, formed of a first type of...