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- Ga deposit in coal seam 煤中镓
- The way and principle of Gaussian curvature method for forecasting natural fracture zones in coal seam are discussed. 摘要论述了高斯曲率法预测煤层天然裂隙发育区的基本原理和方法。
- Outburst prevention technique of excavating in coal seam will be directly concerned colliery safety production and excavates taking over. 摘要突出煤层煤巷掘进防突直接关系到煤矿的安全生产和采掘接替。
- The studies also show that magnetized water has a good application prospect in coal seam infusion. 磁化水在煤层注水方面具有良好的应用前景。
- With the tectonic geological methods the development properties,the forming mechanics of faults in Coal Seam 11-2 in Payi Coal Mine are analyzed. 采用构造地质学的方法,对潘一煤矿井田内11-2煤层中断层的特征、发育规律及形成机制进行了分析。
- Little faults in coal seam are important for coal and gas outburst prevention and control,and water outburst prevention and control. 煤层小断层对矿井煤与瓦斯突出及矿井突水防治具有重要的实际意义。
- It used draining while mining and light &middle pressure water injection in coal seam, those completely eliminated the danger of coal and gas outburst. 在生产过程中，采用边采边抽和浅孔中压注水措施，完全消除了工作面的突出危险性。
- He has a large deposit in the bank. 他在银行有大笔存款。
- In view of the problems occurring in trapezoidal support used in coal seam gateway, a novel small-curvature arch support for mining engineering is presented. 针对煤层顺槽梯形支架存在的问题，提出一种新型结构的小曲率拱型支架。
- The hardness and thickness of coal seam play a great role in the vertical distribution of stress in coal and the occurrence of rock bunt under the condition of hard roof and hard floor. 在“两硬”条件下，煤层厚度与硬度的变化对煤体中的应力分布有着很大的影响，从而对煤岩体系统中冲击矿压的发生有着很大的影响。
- The mass of rock underlying a mineral deposit in a mine. 矿藏底石位于一个矿中金属矿藏之下的大量石头
- The relationships between the permeability of the methane gas in coal seam and surface fractal dimension and tortuosity fractal dimension are proposed based on fractal theory and Darcy Law. 基于分形理论和达西定律,研究了孔隙的弯曲分形维数和表面积分形维数与瓦斯渗透率参数之间的关系;
- There is some deposit in the bottom of the cup. 这只烧杯的底部有些沉淀物。
- Through 3 case studies,the paper introduced the PROTEM 67D transient electromagnetic system geological results when used in coal seam floor water abu ndant zone,water conducted zone and abandoned mine water prospecting. 通过矿区勘探的三个典型实例,介绍了PROTEM67D瞬变电磁系统在探测煤层底板富水区、导水通道老窑积水等方面的应用及取得的地质效果。
- It is concluded that the Gaussian curvature method can reflect the shape variation of coal seam curvature, and the method is effective to forecast natural fracture zones in coal seam. 分析表明，高斯曲率法可相对真实地反映煤层曲面形态变化，用该方法预测煤层天然裂隙发育区是切实可行的。
- Coarse crumb rubber is apt to deposit in asphalt. 粗的橡胶颗粒容易在沥青中沉淀。
- Besides,the predicting roles played by the isopach map of sand bodies of the roof(footwall) in coal seam for erosion zones are introduced,and the predicting methods,steps and examples are also given. 针对现有煤层冲刷带的分类及其命名存在的问题,提出了新的分类方案,阐述了煤层冲刷带各类型的主要特征,并介绍了煤层顶（底）板砂体等厚图对煤层冲刷带的预测作用,预测方法步骤及预测实例。
- To deposit in or as if in a bank. 存钱把钱存入或似乎存入银行
- Coal gas dynamics is a frontier geoscience that makes a special study of the law for gas flow and the pressure distribution in coal seam of gaslogged strata as well as gas dynamic variation. 煤层瓦斯动力学是一门主要研究煤(岩)层内瓦斯(煤层气)运移和分布规律的边缘地球科学。
- There is some deposit in the bottom of the flask. 这只烧瓶的底部有些沉淀物。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
