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- coal seam genetic type 煤层成因类型
- Keywords No.16 coal seam;genetic type;coal facies;Yanzhou coal mining area; 16号煤层;成因类型;煤相;兖州矿区;
- In the mineable C3 coal seam at Dazhuba coalfield,macroscopic type mainly consist of semi-bright fine coal,secondarily semi-dull and semi-bright lump coal. 大竹坝井田全区可采煤层C3,宏观煤岩类型主要为半亮型粉煤,其次为半暗型、半亮型块煤。煤种为中灰中高硫特低磷高热值贫煤。
- The genetic type of the deposit belongs to the hy... 成因类型属高-中温热液交代-充填型矿床为主。
- Coal miners; coal seams; coal haulers. 煤矿工; 煤层; 运煤工
- The Gaussian curvature of No.3 coal seam in Qinshui basin is calculated. 计算了沁水盆地3号煤层的高斯曲率。
- Factors affected coal seam permeability change and its law is analyzed. 分析了煤层透气性变化的影响因素及变化规律。
- Coal seams intermixed with iron ore. 煤层和铁矿混杂在一起。
- The outburst-proneness of 6# coal seam are studied with five indexes. 采用5种指标对该矿6%23煤层冲击倾向性进行了实验研究。
- The fact shows that the single leg type shield support and the technology of discharging coal in the side is an efficient method of coal mining under the condition of steep thick coal seam. 通过井下生产实践表明：单腿支撑柔性掩护支架采煤法和侧向放煤技术相结合是开采大倾角厚煤层一个新的、有效的采煤方法。
- A-type granites keep abreast of I-type and S-type granitites, and are animportant genetic type. 与I型和S型花岗岩一样,A型花岗岩也是一种重要的成因类型。
- There was several ore-forming stages of its mineralization, and its genetic type is exothermal-epithermal deposit. 研究结果表明，矿床成因类型应属与岩浆活动有关的中-低温热液型铁锰多金属矿床。
- There was several ore-forming stages of its mineralization,and its genetic type is exothermal-epithermal deposit. 研究结果表明,矿床成因类型应属与岩浆活动有关的中-低温热液型铁锰多金属矿床。
- Coal seams intermixed with iron ore . 煤层和铁矿混杂在一起。
- 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。
- The oil shale of the third mumber developed in highstand system tract, and its genetic type is of humosapropelic of shallow lacustrine facies. 油三层形成于高水位体系域发育时期，成因类型为浅湖相腐殖-腐泥型油页岩。
- 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。
- At the same time auther considered that the genetic type of mineral deposit belonged to the mesothermal-epithermal filli... 同时认为矿床成因类型属中低温热液充填型，并指出围岩蚀变的找矿意义。
- Long- wall double working- face combined winning technical practice in faull lager small section coal seam. 断层带小块段煤层走向长壁双工作面联合开采技术实践。
- 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。
