您要查找的是不是：
- 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 seams 近距离煤层或煤层群
- Coal miners; coal seams; coal haulers. 煤矿工; 煤层; 运煤工
- Coal seams intermixed with iron ore. 煤层和铁矿混杂在一起。
- adjacent coal seam 近距离煤层
- Coal seams intermixed with iron ore . 煤层和铁矿混杂在一起。
- 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。
- 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。
- 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。
- 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。
- 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。
- The thicker coal seams are located in a 10-15 kmwide belt along which the channel meanders. 较厚的煤层位于河道发生弯曲的、宽10-15公里的地带内。
- The thicker coal seams are located in a 10-15 km wide belt along which the channel meanders. 较厚的煤层位于河道发生弯曲的、宽10-15公里的地带内。
- The State shall encourage coal mining enterprises to carry out second mining or extract residual coal at the margins of mining areas and very thin coal seams. 国家鼓励煤矿企业进行复采或者开采边角残煤和极薄煤。
- However,recent explorations have shown that the Zhiluo Formation also has some minable coal seams in a certain area. 二道岭矿区侏罗系的成因属鄂尔多斯中生代盆地西缘的陆相碎屑沉积,岩石地层自下而上为富县组、延安组、直罗组和安定组。
- Prewetting of coal seams by water infusion is an essential measure for dust control at working faces. 煤层注水预湿是采煤工作面防尘的治本措施，添加湿润剂是改善煤层注水效果的重要途径。
- No.6 and 7 coal seams are anthracites characterized by low ash,super-low sulf... 近南北向和北北东向的断裂为正断层,对马头岭赋煤向斜构造造成切割破坏,使西翼浅部煤层未能保存。
- Industrial important coal seams in the basin's northeastern side along the strike are predicted. 预测在盆地东北侧沿走向应有工业价值的煤层存在。
- 今日热词
-
- 深远海浮式风电平台 - deep-sea floating wind power platform
-
- 京雄高速公路 - Beijing-Xiongan expressway
-
- 农业及相关产业增加值 - the added value of agriculture and related industries
