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- isopachy map of coal seam 煤层等厚图
- comparative map of coal seam and strat 煤岩层对比图
- comparative map of coal seam 煤层对比图
- Isothickness map of coal seam; 煤层等厚线图;
- 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。
- Research on coal bedding structure is the theory foundation and precondition of coal seam gas exploitation. 煤体层理结构的研究是煤层气开发开采的理论基础和前提条件。
- There is a map of the world on the wall. 墙上有张世界地图。
- The authors used the Analytic Hierarchy Process(AHP) in the researches of coal seam floor water-irruption. 将系统工程中的层次分析法引入煤层底板突水的研究中。
- The reserves of thin coal seam shearer and the developing trend of coal seam shearer of our country are analysed. 分析我国薄煤层储量以及薄煤层采煤机的发展状况及趋势。
- Exploration evaluation coal seam gas is a base of coal seam gas exploration and developing. 煤层气的勘探评价,是开展煤层气勘探与开发工作的基础。
- Jim, have you get a detailed map of the area? 吉姆,你有这个地区的详细地图吗?
- She was poring over an old map of the area. 她正在仔细查阅该地区的旧地图。
- The test results show that the drawing interval of 1.5 m is helpful for controlling dead-unconsolidated thin sandstone of coal seam roof and reduce sand ratio of drawn top-coal. 试验结果表明,放煤步距采用三采一放有利于控制顶板极松散细砂岩,降低放出顶煤的含砂率。
- The figure on page 22 shows a political map of Africa. 第22页的插图是非洲的政区图。
- An inversive research method was proposed through analyzing the complicated changing features of permeability of coal seam and the problems existing in actual measurement. 分析了煤层渗透率的复杂变化特点和实际测量上存在的问题,提出其反演方法。
- The development of this compound technique of perforating in fracturing blasting of coal seam showed a very promising applicable future. 该技术在煤层致裂爆破以及其他领域的多方向发展,具有良好的应用前景。
- The old man's face is a map of time. 那老人脸就是岁月的写照。
- Based on analysis of sedimentary facies of coal measures in Tiefa mining area, the erosion zones in the coal seam No.4 in Dalong mining area ar... 在对铁法矿区煤系沉积相分析的基础上,利用煤层顶板砂体等厚图对大隆井田4%23煤层中的冲刷带进行了预测;揭示了铁法矿区煤层冲刷带的总体分布规律。
- 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。