• They were giant, sometimes 8 feet long , and many of them lived in the swampy pools in which our coal seam, or layer, or formed.

    它们体型巨大,有时有8英尺其中许多生活沼泽地里,我们的煤层就是在这里形成的。

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  • The influence of aquifer upon the mining coal seam is estimated.

    预测侏罗系含水层煤层开采影响

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  • Factors affected coal seam permeability change and its law is analyzed.

    分析了煤层透气性变化影响因素变化规律

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  • Rockburst is catastrophic failure phenomena of rock mass and coal seam.

    冲击地压一种岩体突然破坏现象

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  • Put focal point on coal seam roof and floor engineering geological characters.

    重点阐述了煤层底板工程地质特性

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  • Coal seam faults refer to those parallel to or intersected with seam at small angles.

    顺煤断层断面沿煤层煤层呈角度相交的断层。

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  • The phenomenon of water vaporization during infusing water into coal seam was studied.

    煤层注水水分蒸发现象进行了研究;

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  • This paper goes further into the blast-winning technology of the composite coal seam face.

    深入探讨复合煤层回采工作面“松动放炮”落煤工艺问题。

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  • Exploration evaluation coal seam gas is a base of coal seam gas exploration and developing.

    煤层气勘探评价开展煤层气勘探与开发工作的基础

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  • The gauge can simultaneously measure quantity and pressure of water infused into coal seam.

    水表同时测定注入煤层中的水量注水压力

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  • The mathematical model of complex coal seam is established by mathematical statistics method.

    利用数理统计方法建立复杂煤层数学模型

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  • The spontaneous combustion of coal seam is one of the major problems in safe production of coal mine.

    煤层自燃问题一直困扰着我国煤矿安全生产

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  • The study on coal lithostructures is of great significance for predicting the permeability of coal seam.

    岩结构研究预测煤层渗透性方面有重要意义。

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  • Research on coal bedding structure is the theory foundation and precondition of coal seam gas exploitation.

    煤体层理结构研究煤层气开发开采理论基础前提条件

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  • When the protective coal seam is mined, the gas management on the protected coal seam is a very important job.

    保护层开采保护层瓦斯治理一项非常重要的工作。

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  • The concrete construction methods and effects of mining technology in the middle thick coal seam are introduced.

    介绍煤层回采工艺具体施工方法效果,同时介绍了工作面支护参数计算。

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  • Due to the coal seam particularity in Shendong Coal Mine, cracks appear at the radial seat of Eickoff SL500 shearer.

    由于神东矿区煤层特殊性使用艾柯夫公司SL500采煤机时,摇臂出现裂缝

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  • So it is feasible used the logging data to forecast coal seam gas content, and the applied value is enhance further.

    证明测井资料预测煤层瓦斯含量可行的,从而进一步加强了测井资料的实际应用价值

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  • The way and principle of Gaussian curvature method for forecasting natural fracture zones in coal seam are discussed.

    论述了高斯曲率预测煤层天然裂隙发育区的基本原理方法

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  • Essential way of solving the gas drainage problem of low permeability coal seam is to increase coal seam permeability.

    解决透气性煤层瓦斯抽放问题根本途径增加煤层的透气性。

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  • The organization of construction and application result of metal net support in thick coal seam mining are introduced.

    介绍了煤层回采巷道中锚网(索)支护施工组织应用效果分析

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  • Grave protrusion coal seam tunnelling hydraulic cutting protrusion-dispelling measures is a new technology in the world.

    严重突出煤层掘进水力槽防突措施国际一种防突技术

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  • Point out that the horizontal structure stress is one of the important influence factors on the coal seam floor's failure.

    提出水平构造应力煤层底板变形破坏不可忽略重要因素之一

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  • The structure and work theory of a new type of hydraulic lock of the thinnest coal seam shearer is described in this paper.

    介绍了一种研制煤层采煤液压结构特点工作原理,并对其进行了性能实验。

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  • The unit forecast method is applied to forecast quantitatively the complicated degree of small structure in main coal seam.

    单元预测研究区采煤层构造复杂程度进行了定量预测。

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  • From Hales method, reversed refracted wave method shows accuracy and efficiency in detecting the thickness of remained coal seam.

    哈尔·斯为例,将相遇折射法用于剩余探测具有精确高效、快速特点。

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  • The structural deformation is the principal geological factor that affects the thickness variation of coal seam on a mine field scale.

    构造作用控制井田范围内煤层厚度变化主要地质因素

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  • It is difficult to evaluate the coal seam exploitation geological technology quantitatively which belongs to the qualitative questions.

    传统的评价方法很难煤层开采地质工艺性这一定性问题进行定量评价。

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  • According to seepage theory, the gas seepage from drainage hole along coal seam is studied by means of electrical simulation experiment.

    根据渗流理论,本文对沿钻孔周围的瓦斯渗流问题进行模拟实验研究

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  • According to seepage theory, the gas seepage from drainage hole along coal seam is studied by means of electrical simulation experiment.

    根据渗流理论,本文对沿钻孔周围的瓦斯渗流问题进行模拟实验研究

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