pillar operation

用法例句

Application of Roof Deep-hole Pre-splitting Blasting Technology While Working Face Crossing Coal Pillar

顶板深孔预裂爆破在回采工作面过煤柱中的应用

Application of the non-coal column recovery technology in fully mechanized top coal caving mining face

无煤柱开采技术在综放工作面的应用

Comprehensive Fire Prevention and Extinguishment Technology of Spontaneous Combustion Coal Seam in Fully-mechanized Coal Face with Narrow Coal Pillar

自燃煤层窄煤柱综采工作面综合防灭火技术

Investigating Reasonable Scale of Pillars for Protecting Workings Lying under Thrust Sheets;

推覆体下伏工作面防水煤柱合理留设的研究

Strata Behavior of Fully Mechanized Coal Face with Sublevel Caving by Light Supports in Faults Pillar;

断层孤岛煤柱轻放工作面矿压显现规律研究

Practices on Irregular Fully Mechanized Top Coal Caving Mining Along with Fault and No Coal Pillar

沿断层无煤柱开采不规则综放工作面技术实践

Support Technology of Small Coal Pillar Goaf-side Gateway for Fully Mechanized Top Coal Caving Mining Face in Deep Mine

深部综放工作面小煤柱沿空巷道支护技术

Research on Safety Pillar against Water in No.2137 West Lower Working Face, Zhaogezhuang Coalmine, Kailuan

开滦赵各庄矿2137_(西下)工作面防水煤柱留设研究

On the prevention and control of mine water induced by collapse column in #21301 coal face in Chensilou Coal Mine

陈四楼煤矿21301工作面陷落柱防治水技术研究

Practice Entry Protection Technology on Full Mechanized Working Face Heteromorphism Coal-pillar Condition

综放工作面异形煤柱条件下的护巷技术

High-precision microseismic monitoring system to reasonable width of segment coal pillar in extra-thick coal seam fully mechanized top-coal caving mining

特厚煤层综放工作面区段煤柱合理宽度的微地震监测

The ingredient characteristic of 13118 working face of Xieqiao coal mine 2~# cave-in post and influence zone

谢桥煤矿13118工作面2~#陷落柱及影响区的煤岩特征

Discussion on the Method for Rapidly and Forcibly Passing Coalless Columns on the Fully Mechanized Coalface

浅议综采工作面快速硬过无炭柱方法

Analysis on Passing through Fault on 71203 Mining Face in Shigetai Coal Mine

石圪台煤矿71203工作面过断层分析

Technology of Passing Through Faults Directly Using Explosion Method with Pre-retaining Coal at Face

工作面预留煤爆破法直接过断层技术

Study on Protecting Entry Techniques under Anomalistic Pillar Conditions in Hong-Hui NO.4 Mine Fully Mechanized Caving Faces;

红会四矿综放工作面异形煤柱条件下护巷技术研究

Studying the Feasibility of Waterproof Pillar under the Nappe Structure in Work Face 150801 of Xinji No. 1 Coal Mine;

新集一矿推覆体夹片下150801工作面防水煤柱留设可行性研究

Gas Control in the Upper Corner of Working Face under Hard Roof

坚硬顶板条件下大采高小煤柱回采工作面上隅角瓦斯治理