The response character of acoustic wave velocity field of coal floor rock mass failure is discussed according to the general principle of floor failure by mining.
从煤层开采引起底板破坏一般规律出发， 探讨了底板岩体破坏与声波速度场的响应关系， 介绍了声波ＣＴ探测的原理与方法， 按采矿活动的关键阶段设计观测方案， 进行了试采面底板破坏深度的动态声波ＣＴ 探测试验。
Effect research for leakage of surface water body in the Yuecheng Reservoir area due to coal mining;
煤层开采对岳城水库库区渗漏的影响研究
Stress path analysing of soil during coal mining;
煤层开采土体应力路径分析
If the coal mining of Huangling No.
依据地质勘探资料,运用水文地质学相关理论,在分析井田水文地质特征及直罗组上段隔水性能的基础上,通过导水裂隙带最大高度计算,得出了煤层开采对水源地无影响的结论,并提出了矿井建设期间应注意的事宜。
In the process of Shanxi formation seam mining in Shaqu Colliery,the seam roof and floor sandrock aquifers constitute the direct discharge aquifers.
沙曲煤矿山西组煤层开采过程中,煤层顶底板砂岩含水层构成煤层开采时的直接充水含水层。
Influence research of coal seam mining and pole foundation stability of 1000 kV UHV transmission line
煤层开采与1000kV特高压输电杆塔地基稳定性影响研究
Through the research of multi-coalbed mining gas gushing working face,we summarized the rule of gas gushing and distributing,support some prevention and cure measures,which controled gas accident efficiently and improved the yeild and realized safety production.
通过对多煤层开采高瓦斯采煤工作面瓦斯涌出规律的研究,总结出瓦斯的涌出规律和分布规律,提出了防治措施,经过实践有效地控制了瓦斯事故,大幅度提高了原煤产量,实现了安全生产。
On Thin Coal Mining and Application of Plow Coal Technology
我国薄煤层开采及刨煤机采煤技术的应用
Study on Extraction Security of No.3 Coal Seam in West Wing of Baoan Coalmine
保安煤矿西翼3煤层开采安全性研究
Analysis of Mining Steeply Inclined Coal Seam with Bursting Risk in Small Colliery
小煤矿急倾斜突出煤层开采方法探析
Research and Extracting Status of Large Angle and Large Length Coal Seam in China
我国大倾角、大采长煤层开采研究现状
Water Prevention and Control Technology of Seam Mining Under Thin Floor Condition
薄层底板条件下煤层开采防治水技术
Development and Practice of Thin Coal-seam Mining Technology in Kailuan Mining Area
开滦矿区薄煤层开采技术发展与实践
the part of a coal seam that is being cut.
正在被开采的煤层截面。
CBM Development and Utilization for Green Exploitation of Coal Mine
开发利用煤层气 实现煤矿绿色开采
Study on the Reclimaning of Fault Waterproof Coal Pillar in Mafang Mine;
马坊煤矿断层防水煤柱开采回收研究
Mining Technology of Thinner Coal Seam at Yu Jia-liang Coal Company
榆家梁煤矿中厚偏薄煤层的开采技术
Key Technologies on Fully Mechanized Top Coal Caving Mining of Ultra Thick Seam in Tashan Mine
塔山煤矿特厚煤层综放开采关键技术
Determination on Fracture Condition of Key Stratum Above Full Thick Seam Mining Face
厚煤层整层开采采场上覆关键层断裂条件判定
Combin gateway and pillar with fully mechanized top cawing mining technology in steep inclined special thick seam
急倾斜较薄特厚煤层巷柱-综采放顶煤开采技术
Coalbed Methane Reservoir Numerical Simulation and Its Development Scheme;
煤层气储层数值模拟及开采方式研究
Sudy on the numerical simulation of the overlying strata movement of the far-distance protective coal seam
远程保护层开采上覆煤岩层移动规律
Analyse of New Extraction Measure of Coal Bed Methane in Coal Seams of Big Obliquity in Xinjiang
新疆大倾角煤层的煤层气开采方式探讨
New Research on Overlying Coal Seam Effects Induced by Nether Super-thick Coal Seam Exploitation in Coal Group
煤层群下伏特厚煤层综放开采对上覆煤层影响的技术探讨
Extremely Thin Protectors Drilling Picks the Craft in Protector Mining Application
极薄煤层钻采工艺在保护层开采中的应用