long pillar method

Existing problem on longwall remaining coal pillars support mining;

长壁留煤柱支撑法开采存在的问题

This article tries to summarize experiences of the small collieries in mining shallow coal seam in north of Shanxi Province, and suggests to reform unadvanced mining of room and pillar to longwall remaining coal pillars support mining which can largely inprove the coal recovery rate.

在总结陕北煤田小煤矿开采浅部煤层经验的基础上, 建议将落后的房柱式改革为长壁留煤柱支撑法开采, 以较大幅度提高采出率。

In accordance with the geological conditon of 5's mineral lode of Hao chang mine field of Guyi Iron ore, raising the sublevel caving design scheme and some suggestions in using the mining method.

针对故驿铁矿蒿场矿区5号矿体的地质特征,提出无底柱分段崩落采矿法的设计方案,并就该采矿方法的具体使用提出几点建议。

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

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 on Longwall Mining Pressure and Control Beneath the Area Mined with Longwall-Pillar Method in Ultra-Close Multiple-Seams;

极近距离煤层刀柱采空区下长壁开采矿山压力及其控制研究

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

Failure Characteristic of Residual Coal Pillar and Its Influence on Downward Mining

残留煤柱破坏特征及其对下部煤层开采影响

Stability Analysis and control of Longwall Caving Support System Inclined to Thick Coal Seam

急倾斜厚煤层走向长壁综放开采支护系统稳定性分析及控制

Research On Mining Technology of No-pillar Complete Caving Shortwall Mechanization

无煤柱完全垮落短壁机械化开采技术研究

Determination of Ventilation Way at Coal Face with Longwall Mining Method

长壁采煤法采煤工作面通风方式的确定

Longwall mining along the dip of the unstable coal seam and strata control

不稳定煤层倾斜长壁开采及矿压控制

Application on Non Coal Pillar Mining for Gob-side Entry Retaining Technology in High Gaseous Mine

沿空留巷无煤柱开采技术在高瓦斯矿井的应用

Enlightment from Extracting Residual Coal Pillar in Yangzhuang Colliery

杨庄矿在矿井残留煤柱开采中的几点启示

An experimental study on the geological factors affecting the setting loads of single props used in coal faces

影响采煤面单体液压支柱初撑力的地质因素试验研究

An experimental research on the operational factors on setting load of single props used at coal faces

影响采煤面单体支柱初撑力的操作因素试验研究

Application of ZZS3800/15.5/25 Mechanized Supporter in Knife Column Recovery Coal Mining

ZZS3800/15.5/25综采支架在刀柱式回采遗留煤体回收中的应用

Three Anti-Measures for Strike Longwall Retreating Mining In Sloping Coal Seam

倾斜煤层走向长壁后退式采煤法的三防措施

Evaluation method for pillar stability during strip mining in multiple coal seams

多煤层条带开采煤柱稳定性评价方法研究

Application of inchined longwall and overhead mining technology in large tilt angle coal seam mining

倾斜长壁仰斜开采技术在大倾角煤层中的应用

Research on Aquiclude's Broking Law of Longwall Mining in Shallow Seam;

浅埋煤层长壁开采隔水层破坏规律研究