Experiment on mining upper limit improvement for fully mechanized longwall top coal caving mining face with thin overburden bedrock in Yangcun Mine;
杨村煤矿薄基岩区提高综放面开采上限试验
Study of Mining Upper Limit of Section 11610 in Tianzhuang Coal Mine,Yanzhou of Shandong Province
兖州田庄矿11610工作面开采上限的研究
Technological Study of Resonably Determining the Upper Limits of Mining on Shallow Embedding Coal Seam;
浅埋深煤层合理确定开采上限技术研究
Feasibility and benefit analysis on increasing upper mining limit of No.3 coal seam,Daizhuang Coal Mine
岱庄煤矿3煤提高开采上限可行性研究及效益分析
A Study and Practice of Mining Upper Limit in 11-2 Coal Seam, East Wing of Xinji No.2 Mine
新集二矿东翼11-2煤层提高开采上限的研究与实践
Study on the Upper Mining Limit Under Drained Quaternary Water-Bearing Stratum in Taiping Coal Mining;
太平煤矿疏降第四系底部含水层提高开采上限研究
Overhand stoping indicates working from a lower to an upper level; underhand stoping is the opposite, from an upper level to a lower level.
上向回采是指从下往上开采，下向回采则相反，从上往下开采。
British Petroleum Development Company of South Africa, Ltd.
南非英国石油开采有限公司
Since the 1980s, China has exercised cutting quotas in natural forests.
从80年代开始对天然林限额采伐。
Finite difference analysis of cover rock seepage in coalmine
煤矿开采覆岩渗流场的有限差分分析
Its use is somewhat restricted by frequent requirements for window and door openings.
但经常由于门窗开洞的要求，使得这种支撑的采用在一定程度上受到了限制。
The feasibility of extending the upper extraction limit for No.810 Mining Area of Luling Coal Mine
芦岭煤矿810采区提高回采上限的可行性研究
overhand cut and fill
上行分层采掘充填开采法
Study on the Theory and Its Application of Upward Mining of Left-Over Coal
残采区上行开采基础理论及应用研究
Study on Ground Pressure Characteristic of Shallow Coal Seam Longwall Mining and Its Safe Exploitation Demarcation;
浅埋煤层长壁开采矿压特点及其安全开采界限研究
There are several techniques for working the face of the stope. Overhand stoping indicates working from a lower to an upper level; underhand stoping is the opposite, from an upper level to a lower level.
工作面回采技术有好几种。上向回采是指从下往上开采，下向回采则相反，从上往下开采。
Feasibility on the upward mining of the left-over coal above goaf with pillar supporting method
刀柱采空区上方遗弃煤层上行开采可行性判定
Application of revolving mining in longwalling irregular thin coal seam in upward mining manner
旋转开采技术在上行开采不规则薄煤层综采面的实践
Sociedade Portuguesa de Exploracao de Petroleos, SARL
葡萄牙石油开采股份有限公司(安哥尔公司)