Study on safe coal pillar design and sub-grade stability of freeway in unexploited coal zone;
高速公路压煤区安全煤柱留设及其对路基稳定性的影响
Without other safety measures, some safety ore pillars have to be reserved to prevent the ground buildings and constructs and the main shafts from being damaged during underground mining.
矿床地下开采时,在没有其他安全措施的情况下,不得不采用预留安全矿柱的方法,以保护地面建筑物、构筑物和主要井巷免受因地下采矿而引起的破坏。
The driving technology with reservation safety rock pillar and secondary lane is applied in the rock roadway near outburst coal seam.
近突出煤层岩巷采用预留安全岩柱二次成巷掘进技术,可实现安全快速掘进,具有很好的经济和社会效益,对类似条件的巷道掘进具有一定的指导意义。
On this basis,the height of "two zones"and the reasonable size of safety pillars were predicted.
在此基础上,预计了"两带"高度,探讨了安全煤岩柱合理尺寸,使开采上限提高了30 m煤柱,解放呆滞煤量73。
Determination of waterproof rock pillar height with the top coal caving under sea
海下综放开采防水安全煤岩柱厚度的确定
Calculation and evaluation on the safe width of fault waterpro of coal (rock) pillar
断层防水煤(岩)柱安全宽度的计算与评价
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
The Main Problems Affecting Mine safety and Production in Coal Mine
煤矿安全生产中的几个岩石力学问题
Study on Safe Mining of Island Coal and Roadway Maintenance Technology;
孤岛煤柱安全开采及巷道维护技术研究
Research on Safety Effect of Limestone Water on Mining of Lower Seam Cluster in Liyan Coal Mine;
里彦矿灰岩水对下组煤安全开采影响的研究
Research of Security Eeploiting Technology for Coal Below Corrosion Moisture Rock;
溶蚀含水岩层下煤炭安全开采技术研究
Basic Research on Control of Surrounding Rock in Big Section Safety Mining in Steep Seams;
急斜煤层大段高安全开采围岩控制基础研究
The Surface Subsidence Observation Analysis and Research of Safely Underwater Mining
水体下安全采煤的地表岩移观测分析研究
SUBSIDED COLUMN OF KARST IN SIIENNANCOAL-FIELD AMD ITS WATER FLOWING CHARACTERISTICS
沈南煤田岩溶陷落柱及其导水性特点
Study on Reasonable Width of Coal and Rock Pillar under Thick Aquiferous Loose Bed;
厚含水松散层下煤岩柱合理留设研究
Study on the Stability of Rock Surrounding Gateway with Different Coal-pillar Widths
煤柱宽度对巷道围岩稳定性影响分析
Stability Analysis of Rock Pillar in the Uncovering Coal Process of Highway Tunnel Though Coal Seam
公路穿煤隧道揭煤施工过程中岩柱稳定性分析
Study on Influence of Limestone Water of TaiyuanGroup on Safety Mining No.10 Coal Seam and Determination of Water Bursting Sources in Liudian Coal Mine;
刘店煤矿太原组灰岩水对10煤层安全开采的影响及突水水源判别研究
Study on Influence of Limestone Water of Taiyuan Group on Safety Mining No.10 Coal Seam and Determination of Water Bursting Sources in Yangliu Coal Mine
杨柳煤矿太原组灰岩水对10煤层安全开采的影响及突水水源判别研究
Characteristics of Coal Pillar's Concentrated Load and Its Influence on Surrounding Rock Stress of Roadway
煤柱集中载荷特征及其对巷道围岩应力的影响
Concentrate loading of pillar and its effect on the tunnel surrounding rock stress of differ location
煤柱集中载荷对不同错距巷道围岩应力的影响
Study on Extraction Security of No.3 Coal Seam in West Wing of Baoan Coalmine
保安煤矿西翼3煤层开采安全性研究