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- The inrush mechanisms of high pressure groundwater from floor of coal seam and gob areas, as well as related preventing technology are the study emphases. 重点分析了深部煤炭资源开发过程中高承压水底板突出机理及其防治技术和废弃矿井老空水突出机理与防治技术。
- Roof and floor of coal seam 煤层顶底板
- floor of coal seam 煤层底板
- 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 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 results show that aquiclude of coal seam floor has obvious elimination to water head, and the actual water pressure exerting to the effective water resistant layer is lower than that of aquifer. 结果表明：隔水层的原始导高带对含水层水头具有较大的消减作用，作用于有效隔水层的实际水头压力远小于含水层的水头压力。
- 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。
- 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。
- She was found prostrate on the floor of the cell. 有人发现她趴在小屋的地板上。
- 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。
- They first arrived on the first day they fell in love with this place, also found that the mezzanine floor of a small black insects Wizard of coal. 她们刚到的第一天她们就爱上了这个地方，还在阁楼发现了小小的黑精灵煤虫。
- The ground floor of a theater behind the stalls. 正厅后座，正厅后座观众剧院前座观众后的底层
- The lion paced the floor of his cage restlessly. 狮子烦躁地在兽笼里走来走去。
- 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。
- His books lay in a heap on the floor of the living room. 他的书叠成一堆放在客厅的地板上。
- 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 floor of this room is made of wood. 这个房间的地板是木头的。
- They dropped their net to the floor of the ocean. 他们把网下到海底。
- 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。
