1.
pillar of ground
运输平巷上方的煤柱
2.
Reinforcement Mechanism of Anchored Bolt for Coal Pillar and Analysis of Influence Factors of Pillar Strength
煤柱锚杆加固机理与煤柱强度影响因素分析
3.
Second Mining under Isolated Pillar Left by Wedge-pillar Mining Method
刀柱复采跨隔离煤柱布置探索与实践
4.
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
5.
Theoretical determination of the section coal pillar's reserve-width in medium thick coal seam
中厚煤层区段煤柱留设宽度理论确定
6.
Theory and practice of integrated pillarless coal production and methane extraction in multiseams of low permeability
低透气性煤层群无煤柱煤气共采理论与实践
7.
Analysis on Stability of Coal Pillar in Goaf Area of No.11 Seam in Tangshangou Mine
唐山沟煤矿11号煤层采空区煤柱稳定性分析
8.
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
9.
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
10.
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
11.
Research on Reasonable Size of Steeply Dipping Seam Strip Coal Pillar under Village;
村庄下大倾角煤层条带煤柱合理尺寸研究
12.
A 3D Numerical Analysis of F_2 Fault Waterproof Pillar in Tao Yuan Coal Mine;
桃园煤矿F_2断层防水煤柱留设的三维数值分析
13.
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
14.
Research on Reasonable Dimension of Protective Pillar for Cross-cutin Steeply Inclined Coal Seam
急倾斜煤层石门保护煤柱合理尺寸研究
15.
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
16.
Simulation Experiment of Section Coal Pillar Parameter of Hongqinghe Coal Mine
红庆河煤矿区段煤柱参数模拟实验研究
17.
The discussion about waterproof mine columniationpillar width in Small coal mines bare area
小煤窑采空区留设防水煤柱合理宽度的探讨
18.
Numerical Simulation of Anchored Bolt Supporting for Roadway in Small Coal Pillar with Large Inclined Angle
大倾角煤层小煤柱巷道锚杆支护数值模拟研究