sylvester prop

用法例句

Stope pillar recovery in overall mining method;

全面采矿法采场的矿柱回采

open-end method

(采矿) 敞开进路式矿柱回采法

Mine Pillars Mining with Small-scale Coal Mining Approach in Small Coal Mine

小型煤矿采用小进路采矿法的矿柱回采

When the ore is particularly valuable, the walls and pillars are often removed at a later stage and the roof of the chamber is allowed to cave in. This technique is known as robbing.

如果矿石特别宝贵，矿壁和矿柱常在最后回采，让采场顶板冒落。这一技术叫矿柱回采。

Integrated Technology of Middle Pillar Stoping Under Dry Filling Materials

干式充填体下中段矿柱回采综合技术研究

Optimize of Ore Pillar Mining Methods Based on Fuzzy Synthetical Judgment

基于模糊综合评判法的矿柱回采方案优选

The Application of Heterogenous Interface Control-blasting Techniques in the Mining of High-level Pillars at Anqing Copper Mine

异质界面控制爆破技术在安庆铜矿高阶段矿柱回采中的应用

pillar robbing

【采矿】回收矿柱法

Mining design procedures of the deep mining process sublevel caving stoping method

无底柱分段崩落采矿法回采设计方法

The Technology and Practice of the Safe Pillar Stoping in the Mined Area of Shizishan Copper Mine

狮子山铜矿采空区矿柱安全回采技术与实践

Study on the Reclimaning of Fault Waterproof Coal Pillar in Mafang Mine;

马坊煤矿断层防水煤柱开采回收研究

Research of Extraction Quality Evaluation of a Stope and Safety and High-efficiency Extraction of Ore Pillar Based on a Cavity Monitoring System

基于空区实测的采场回采质量评价与矿柱安全高效回采研究

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

Ground Pressure Monitor and Pillar Robbing Technology in Dangping Baoshan Mining Region

荡坪钨矿宝山矿区水平矿柱地压监测与回采技术研究

Increasing of ore recovery rate and decreasing of ore loss & dilution rate in the case of pillarless sublevel caving

浅析无底柱分段崩落法提高矿石回采率

Research on the Pillar Extraction in Erxiashan Mining Area of Suhaitu Coal Mine

苏海图煤矿二下山采区煤柱回收方法研究

triple-entry room-and-pillar mining

三进路房柱式采矿法

It is a key for a high level pillar mining's success to prevent backfill from being destroyed.

充填体不产生大规模破坏是高阶段矿柱成功回采的关键。

Spontaneous Combution and Firing Study on Air Return Workface of Steep Coal Seam with Pillar Mining Method in Shitun Coal Mine;

拾屯煤矿急倾斜煤层巷柱式回采面发火规律研究