top seam

用法例句

Design and application of horizontal long borehole for gas drainage in seam roof;

煤层顶板瓦斯抽放水平长钻孔的设计与应用

There are 6 types of REEs in coals and seam roofs: water\|soluble state (Ⅰ), ion\|exchangeable state(Ⅱ), carbonate state(Ⅲ), organism\|bonded state(Ⅳ), sialic state(Ⅴ),and sulfide state(Ⅵ).

在煤层顶板中 ,以硅铝化合物和硫化物结合态的稀土元素含量随着原子序数的增加而减少 ,以有机质结合态的稀土元素随着原子序数的增加而增加 ,且和煤层中稀土元素的赋存状态不同 ,表明不同沉积环境以及相同沉积环境对不同物质中的稀土元素的分馏效应是不同的 。

Aqueous characteristics of No. 3 coal roof sandstone in Yanzhou mining area;

兖州矿区3号煤层顶板砂岩含水层水文地质特征研究

Based on the analysis on seismic attributions,an analysis method of seismic attributes and prediction method of lithologic characters based on a BP artificial neural network were proposed for forecasting the mudstone percentage content of coal roof.

从地震属性分析入手,提出了用于煤层顶板泥岩百分比含量预测的地震属性分析方法和BP人工神经网络岩性预测方法。

Research on the tectonic synthesis method of prediction roof stability and its application;

煤层顶板稳定性预测构造解析法研究与应用

A research on the relation between mining caused coal seam roof fissures and mine gas distribution

煤层顶板采动裂隙与瓦斯分布关系研究

Analysis the height of water conducted zone of coal seam roof based on GA-SVR

基于遗传-支持向量机法的煤层顶板导水断裂带高度的分析

According to the actual situation of the applying of anchor wire support in Xin Zhouyao Coal Mine, this article introduces how to put it into practical use under the conditions of coal seam roof and broken rock roof, and analyses its supporting and economy effect.

根据大同煤矿集团公司忻州窑矿应用锚索支护的实际情况,介绍了锚索支护在煤层顶板或破碎岩石顶板条件下的具体应用,分析了锚索支护在实际应用中的支护效果和经济效果,展望了锚索支护的推广应用前景。

Detector of Coal Seam Roof Strata Based on S3C44B0X Framework

基于S3C44B0X构架下的煤层顶板岩层探测器

Fuzzy Comprehensive Evaluation and Prediction of Coal Seam-roof Stability Based

煤层顶板稳定性模糊综合评判和预测

Study on stability of main seam roof in dongjiahe minefield

澄合董家河井田煤层顶板稳定性评价

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

Distribution Rule and Control Techniques over Bed Separation Water in Coal Seam Roof

煤层顶板离层水体分布规律及防治技术探讨

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。

Study on Strata Mechanical Structure and Support Adaptability of Shallow Seam;

浅埋深煤层顶板力学结构与支架适应性研究

A research on the relation between mining caused coal seam roof fissures and mine gas distribution

煤层顶板采动裂隙与瓦斯分布关系研究

Application of the high density electrical prospecting to rich water survey of downhole coal plate.

高密度电法探测井下煤层顶板富水性效果

Effect of roof aquifers on the coalbed methane well pattern productivity

顶板含水层对煤层气井网产能的影响

Study on the Roof Bedding Separation and Anchoring Effect of Extremely Thick Coal Seam Large Section Roadway;

特厚煤层大断面煤巷顶板离层及锚固效应研究

Plowability of plow mining on thin and soft coal seam with hard roof

坚硬顶板松软薄煤层刨煤机开采可刨性研究

Optimization of coal seam roof and floor stripping equipment for use in Shengli East No.2 Open-pit Coal Mine

胜利东二露天煤矿煤层顶底板剥离设备优化

The selecting type of the support and roof control in soft rock coal seam floor

软岩底板煤层支架选型及顶板控制研究

Roadway Mechanized Excavation Technology for the Close Distance Seams for the Composite Lay Roof under Goaf

近距离煤层采空下复合层顶板巷道综掘技术

A new algorithm of building coal seam TIN considering reverse faults

考虑逆断层的煤层顶底板TIN生成的新方法

The Study of Roof Management Problems with Big Tilting Angle Coal Seam Applying Tilting Extraction

大倾角煤层仰斜开采顶板管理问题的研究

Study on Failure Law and Support Technique of Stratified and Weak Rock Roof of Roadway;

煤巷层状软岩顶板破坏规律及支护研究