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- Expressive features of fault in two adjacent coal seam 断层在两邻近煤层中的表现特征
- State Analysis and Strata Controlling Technology in Roof Movement of Longwall Workings under the Stoops of Adjacent Coal Seam 近距煤层刀柱下长壁开采顶板活动形态及控顶技术
- adjacent coal seam 近距离煤层
- Coal miners; coal seams; coal haulers. 煤矿工; 煤层; 运煤工
- adjacent coal seams 近距离煤层或煤层群
- 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 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。
- No safety pillars shall be mined without authorization and no dangerous methods, such as water bursting, blasting and breaking through roadways, which may threaten the production safety of adjacent coal mines shall be adopted. 采矿作业不得擅自开采保安煤柱,不得采用可能危及相邻煤矿生产安全的决水、爆破、贯通巷道等危险方法。
- Coal seams intermixed with iron ore . 煤层和铁矿混杂在一起。
- No safety pillars shall be mined without authorization and no dangerous methods,such as water bursting,blasting and breaking through roadways,which may threaten the production safety of adjacent coal mines shall be adopted. 采矿作业不得擅自开采保安煤柱,不得采用可能危及相邻煤矿生产安全的决水、爆破、贯通巷道等危险方法。
- 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。
- 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。
- Ceaseless silting and compensating in adjacent two rivers,extra-thick coal seams formed in depressed topographic lows annularly,and the main control f... 在今后的找煤与勘探工作中,采用综合勘探技术对厚煤层变薄及缺失和基底构造形态予以精确控制,是满足高产高效矿井对地质条件精度要求的必要。
- So it is feasible used the logging data to forecast coal seam gas content,and the applied value is enhance further. 证明用测井资料预测煤层瓦斯含量是可行的,从而进一步加强了测井资料的实际应用价值。
- 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 technology of roadway protection with coal waste residue concrete and application in thin coal seam are introduced. 介绍了煤矸渣混凝护巷技术及其在薄煤层中的应用。