水平分段放顶煤,horizontal section top coal caving英语短句,例句大全

水平分段放顶煤,horizontal section top coal caving
1)horizontal section top coal caving水平分段放顶煤
1.Basic roof and immediate roof of horizontal section top coal caving were beside the working face in steep seams.运用弹性薄板理论对急斜煤层水平分段放顶煤开采基本顶岩层进行拉应力分析,得出了顶板破断的判别准则。
2.Characters of surface subsidence have been researched by means of large solid experiment frame in mining horizontal section top coal caving in steep seams.借助急斜煤层大型立体模拟试验架,对急斜煤层水平分段放顶煤开采地表变形破坏特征进行了开采的立体模拟试验研究。
3.The destruction process of upper-layers was simulated by means of strata failure process analysis system(RFPA2D) in order to make clear the cause of fire in working face in horizontal section top coal caving.堵塞漏风供氧通道以消除采空区残煤自然发火的外部因素有助于急倾斜水平分段放顶煤开采的安全生产。

英文短句/例句

1.Study on Top Coal Caving of Horizontal Section Top Caving in Steep Seam;急倾斜水平分段放顶煤顶煤放出规律研究
2.Study on Structure and Control of Surrounding Rock in Mining Steep Seams Using Horizontal Section Top-Coal Caving;急斜煤层水平分段放顶煤开采围岩结构及其控制性研究
3.Selection of Reasonable Section Heights During Top-coal Caving to Steep Seams急斜煤层分段放顶煤开采合理段高选择研究
4.Analysis of instability characteristics of surrounding rock within horizontal section caving face in steep coal seam急斜煤层水平分段综放开采围岩失稳特征分析
5.Comparison of strata movement between section and slicing of top coal mining in steep and thick seams急斜厚煤层分层与分段放顶煤岩层移动对比
6.Study on Development Law of Water Conducted Fracture Zone in Top Coal of Fully Mechanized Top Coal Caving Mining Face综采放顶煤导水裂缝带发育规律分析
7.Study on Gob-side Entry Retaining Technical with Horizontal Section Top Coal Caving in Steep-inclined and Very Thick Seam;急倾斜特厚煤层水平分段综放开采沿空留巷技术研究
8.Study on Behavior of Superincumbent Strata in Mining 45 Degree Coal Seams Using Horizontal Section Top-coal Caving;45°煤层水平分段综放开采上覆岩层移动破坏规律研究
9.Study on Roadway Supporting Technology of Full-mechanized Sublevel-Top-Caving Mining for Steep Seam急倾斜煤层水平分段综放开采巷道支护技术研究
10.The first caving roof sections in hard coal layers can effectively reduce the pressure during the course of caving and guarantee safe production and efficiency.坚硬煤层顶板分段初次放顶,能够有效缓解放顶期间的顶板压力,保证安全生产,提高生产效率。
11.Determination of Critical Thickness of Stiff Roof in Coal Mine Based on Thick Plate Theory基于厚板理论的水平煤层顶板临界厚度的分析
12.Analysis of natural radioactivity level of the typical fly ash from guizhou province贵州典型粉煤灰天然放射性水平分析
13.Study on Roof and Top-Coal Classification and Application in Fully Mechanized Top-Coal Caving Face;综放面顶板（顶煤）分类及应用研究
14.Roof-coal Falling Characteristics Analysis in Fully-mechanized Caving综放开采顶煤冒放性因素分析与评价
15.Application of High-pressure Water Injection in Coal Seam at Fully Mechanized Caving Face煤层高压注水在综采放顶煤工作面的应用
16.Theory and Application on Top-Coal Caving Characteristics and Water Pre-Infusion to Treat Top-Coal;顶煤冒放特性与预注水处理顶煤的理论研究及其应用
17.Practice on Mining Method Changing from Top Coal Caving Mining to Top Slice Mining工作面由放顶煤开采改为顶分层开采的实践
18.Study on Distribution Regularity of Coal-body Gas Pressure near Coal Draw-point in Early Stage of Caving Mining放顶煤开采初期放煤口附近煤体瓦斯压力分布规律研究