safety post

Study on safe coal pillar design and sub-grade stability of freeway in unexploited coal zone;

高速公路壓煤區安全煤柱留設及其對路基穩定性的影響

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.

礦床地下開采時,在沒有其他安全措施的情況下,不得不采用預留安全礦柱的方法,以保護地面建筑物、構筑物和主要井巷免受因地下采礦而引起的破壞。

The driving technology with reservation safety rock pillar and secondary lane is applied in the rock roadway near outburst coal seam.

近突出煤層巖巷采用預留安全巖柱二次成巷掘進技術,可實現安全快速掘進,具有很好的經濟和社會效益,對類似條件的巷道掘進具有一定的指導意義。

On this basis,the height of "two zones"and the reasonable size of safety pillars were predicted.

在此基礎上,預計了"兩帶"高度,探討了安全煤巖柱合理尺寸,使開采上限提高了30 m煤柱,解放呆滯煤量73。

Determination of waterproof rock pillar height with the top coal caving under sea

海下綜放開采防水安全煤巖柱厚度的確定

Calculation and evaluation on the safe width of fault waterpro of coal (rock) pillar

斷層防水煤(巖)柱安全寬度的計算與評價

Research of Security Mining Technology for Coal-Pillar Below Railway Bridge;

鐵路橋下工業煤柱安全開采技術研究

The Main Problems Affecting Mine safety and Production in Coal Mine

煤礦安全生產中的幾個巖石力學問題

Study on Safe Mining of Island Coal and Roadway Maintenance Technology;

孤島煤柱安全開采及巷道維護技術研究

Research on Safety Effect of Limestone Water on Mining of Lower Seam Cluster in Liyan Coal Mine;

里彥礦灰巖水對下組煤安全開采影響的研究

Research of Security Eeploiting Technology for Coal Below Corrosion Moisture Rock;

溶蝕含水巖層下煤炭安全開采技術研究

Basic Research on Control of Surrounding Rock in Big Section Safety Mining in Steep Seams;

急斜煤層大段高安全開采圍巖控制基礎研究

The Surface Subsidence Observation Analysis and Research of Safely Underwater Mining

水體下安全采煤的地表巖移觀測分析研究

SUBSIDED COLUMN OF KARST IN SIIENNANCOAL-FIELD AMD ITS WATER FLOWING CHARACTERISTICS

沈南煤田巖溶陷落柱及其導水性特點

Study on Reasonable Width of Coal and Rock Pillar under Thick Aquiferous Loose Bed;

厚含水松散層下煤巖柱合理留設研究

Study on the Stability of Rock Surrounding Gateway with Different Coal-pillar Widths

煤柱寬度對巷道圍巖穩定性影響分析

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過程中巖柱穩定性分析

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;

劉店煤礦太原組灰巖水對10煤層安全開采的影響及突水水源判別研究

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

楊柳煤礦太原組灰巖水對10煤層安全開采的影響及突水水源判別研究

Characteristics of Coal Pillar's Concentrated Load and Its Influence on Surrounding Rock Stress of Roadway

煤柱集中載荷特征及其對巷道圍巖應力的影響

Concentrate loading of pillar and its effect on the tunnel surrounding rock stress of differ location

煤柱集中載荷對不同錯距巷道圍巖應力的影響

Study on Extraction Security of No.3 Coal Seam in West Wing of Baoan Coalmine

保安煤礦西翼3煤層開采安全性研究