open end method

用法例句

The dangerous and hazardous factors are analyzed in the inclined and bedded gypsum mineral deposit underground mining by pillar-and-room method.

本文对缓倾薄层石膏矿床房柱法开采过程中存在的危险危害因素进行了分析,指出采空区坍塌是最重要的危险危害因素,分析认为矿体基本力学性质和采矿方法是影响采空区坍塌的主要因素,提出了当前应优先考虑的安全管理和安全技术新对策。

Study on the Damage patterns and Mechanism of Mined-out Area in Mines using Room-and-Pillar Mining Method

房柱法开采矿山采空区失稳模式及机理

Concrete column as substitute for ore pillar in room-and-pillar mining

人工混凝土柱代替原生矿柱在房柱法开采中的应用

high-face room-and-pillar mining

高工作面房柱式开采

Application of Slice and Room-and-Pillar Mining with Overcut in Mofang Mine

分层开采的切顶房柱法在磨坊矿的应用

Application of Room and Pillar Mining Method in Under-sea Deposit

分矿房矿柱分层充填法在海底开采中的应用

triple-entry room-and-pillar mining

三进路房柱式采矿法

Study on Disposition Method of Huge Goaf in Room-And-Pillar-Mining in Pingyi Gypsum Colliery;

平邑石膏矿房柱式开采大面积采空区处理方法研究

Principal Technology Study on Pillor Mining under the System of Room and Pillor Mining;

房柱式开采体系煤柱回收关键技术研究

open-end method

(采矿) 敞开进路式矿柱回采法

Study the technique of caving hanging roof in the condition of hard roof of room-and-pillar mining.;

房柱式开采坚硬顶板条件下悬顶放顶技术研究

Research on Longwall Rigid Separating Pillar Mining Technology of Small Colliery in YSF Field;

榆神府矿区小煤矿长壁布置刚性隔离煤柱房柱式开采研究

Development of MCAI Courseware for Sublevel Caving;

无底柱崩落采矿法的MCAI课件的开发

An Analysis of Management of Ceiling Boards of Mining Way in House-post of Dounan Mine

斗南矿区房柱采矿法顶板管理问题初探

A new method for the mining of gentle dip and mediun thickness orebody

缓倾斜中厚矿体的一种新的采矿方法——深孔放顶连续回采房柱法

Lots of coal mines in neimenggu use the system of room and pillar and exploits only rooms but not pillars.

内蒙古地区很多煤炭生产基地多利用房式开采体系，只采煤房，不采煤柱。

pillar robbing

【采矿】回收矿柱法

Numerical Study on Substitution Extraction in Coal Pillar of Strip Mining

条带开采留设煤柱置换开采方法的数值模拟研究

Study on Optimization Design and Destruct Monitoring Character of Coal Pillar in Longwall Remaining Coal Pillar Support Mining;

长壁留煤柱支撑法开采煤柱优化设计及破坏的可监测性研究