1) trench roof
堑沟顶端形状
1.
To reduce the cost of mining,the economic and safety methods are compared according to the characteristics of large diameter deep hole mining in Zijingshan Copper Mine,and the trench roof of medium-length hole blasting is analysed also.
为了进一步降低采矿成本,针对紫金山铜矿大直径深孔大规模采矿的特点,经过经济、安全等方法对比后,对采用中深孔爆破形成的底部堑沟顶端形状上做了一些必要的分析。
2) V-gully
V形堑沟
1.
According to the shortcomings of bottom structure which uses cones for ore reception and dual scraping drifts for ore removal originally, We made a successful use of bottom structure wich uses V-gully for ore reception and dual-scraping drifts for ore re-moval in practising the sublevel drilling and level room mining method in shizhuyuan Non-ferrous Metals Mine, and obtained a better result.
柿竹园有色金属矿在分段凿岩阶段矿房采矿法的实践中,针对过去漏斗受矿、双电耙道出矿底部结构之不足,成功试用了一种V形堑沟受矿、双电耙道出矿的底部结构,获得了较好的效果,对该矿采矿工艺的完善及类似矿山的开采具有实用价值,本文详细介绍和分析了这种底部结构的特点。
3) crown ditch
路堑坡顶截水沟
4) rounded tip notch
弧形顶端V状缺口
6) trench shape
管沟形状
1.
At present,trench shape and size,the two factors having the most direct and economical influences on pipeline strain,have not been studied yet.
目前,在埋地天然气管线抗震安全性研究方面,对管道应变影响最直接、最经济有效的管沟形状和尺寸这两个因素还没有予以研究。
补充资料：顶端
①最高最上的部分：登上电视塔的～。②末尾：我们走到大桥的～。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条