Research and practices on combined mining for seams with closed distance;
近距离煤层联合开采设计研究与实践
New combined mining technology for steeply inclined short-interval thick coal seams;
急倾斜近距离厚煤层联合开采新工艺
Study on combined mining and exploration for the thin coal seams very close under gob water;
极近距离老空水下薄煤层联合开采探测研究
The application and practice of combined mining method to the stoping of residual ore;
联合采矿法在残矿回采中的应用与实践
Study on Rules of Mining Damage Caused by Open-pit with Under-ground Mining;
露天地下联合开采采动损害规律研究
Research on the reasonable distance when the close seams joint mining
近距离煤层联合开采合理错距的研究
Study on combined mining and exploration for the thin coal seams very close under gob water
极近距离老空水下薄煤层联合开采探测研究
Numerical Analysis on Combining Mining of Steep and Close Seam in Jiangou Coal Mine;
碱沟煤矿急斜近距煤层联合开采的数值分析
Technological Directions and Key Problems of Transition from Open Pit to Underground Combined Mining
露天地下联合开采关键问题及技术方向
Study on 3D numerical simulation on combined mining of steep inclined seams with closed distance
急斜近距煤层联合开采三维数值模拟研究
Security Analysis of Open-cut and Underground Combined Mine
矿山露天与地下联合开采实例安全性分析
Simulation Research on Movement Rules of Overlying Strata for United Mining in Steep and Close Seems
急斜近距煤层联合开采覆岩运移规律模拟
Research on supporting reinforcement of roadway complex site in thin coal seam joint mining
薄煤层联合开采回采巷道复杂地段支护加固研究
Research on the Influence of Opencast Mining and Underground Mining to Slope Stability Based-on GIS;
GIS在露井联合开采对边坡稳定性影响研究中的应用
Unite Mining Test and Application of Shallow Hole Shrinkage Stoping Method and Up Level Slicing Filling
浅眼留矿与向上水平分层充填法联合开采试验与应用
THEORY AND PHYSICAL SIMULATION OF CONVENTIONAL STAGGERED DISTANCE DURING COMBINED MINING OF ULTRA-CLOSE THIN COAL SEAM GROUP
极近距离薄煤层群联合开采常规错距理论与物理模拟
FIELD APPLICATION AND PRODUCTION BEHAVIOR OF CROSS-LINKING POLYMER FLOODING TECHNOLOGY
交联聚合物驱技术的矿场应用效果及开采特征
Determination of Optimum Mining Production Capacity about Mining-joint-venture Firm;
矿业联合企业开采最优生产能力的确定
In underground mining the method of breaking up ore varies. Huge machines called continuous miners can be used for soft deposits like salt or coal.
地下开采所用的落矿方法有多种。对于盐或煤等松软矿床，可用联合采矿机开采。
The Comprehensive Optimizing Study on Combined Exploitation in the Very Close Quarters Coal Seam;
极近距离薄煤层联合布置开采综合系统优化研究
The first issue after the war opened concerned tactics at the United Nations.
战争开始后的第一个问题是在联合国采取什么策略。
Determination of Reasonable Horizontal Distance Between Open-Off-Cut and Slope Under the Combined Mining Mode of Open-Pit with Underground Mining
井工-露天联采模式下井工开切眼与边坡合理距离的研究