pillar and post work

Influence factors of room-and-pillar mining in seam groups under building;

建筑物下煤层群房柱式开采的影响因素

Recently benefits of coal mines become more and more better,many local coal mines begin to reform the original mining method,among those changes,roof fall arose from room-and-pillar mining to fully mechanized mining directlythreaten the safety of production.

由于目前的煤炭效益越来越好,许多原有的地方煤矿开始进行采煤方法的改革,其中在从房柱式开采向综放开采转变过程中出现的顶板垮落现象直接危害到工作面的安全生产,文中通过相似模拟实验对此进行了研究,得出控制顶板垮落动力灾害的关键在阶段煤柱的留设。

high-face room-and-pillar mining

高工作面房柱式开采

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

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

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

FE Dynamic Simulation Analysis of in Under-Sea Point Pillar Mining

海下点柱式开采的有限元动态模拟分析

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

open-end method

(采矿) 敞开进路式矿柱回采法

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

Study on Technology of Top-coal Caving Mining of Lane Pillar in 3.5～10m Steeply Inclined Coal Seam;

3.5～10m急倾斜煤层巷柱式放顶煤开采技术研究

triple-entry room-and-pillar mining

三进路房柱式采矿法

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。

Optimization of the Design of Mining Area and to Mine Reasonably the Coal-Pillar of Mine Surface Plant;

优化采区设计 合理开采工业广场煤柱

double column open-back inclinable power press

双柱开式可倾压力机

double column open-back press with fixed bed

双柱开式固定台压力机

open type double-column inclinable press

开式双柱可倾压力机

retreating mining method

后退式开采法(采矿)

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

Research of Security Mining Technology for Coal-Pillar Below Railway Bridge;

铁路桥下工业煤柱安全开采技术研究