保护柱

新型高效液相色谱柱的保护柱

A Novel Guard Column for High Performance Liquid Chromatography

可重复使用的支架与一次性保护柱芯组成保护柱系统，以保护分析柱。

Guard system with reusable holder and disposable guard columns to protect analytical columns .

传统的回采工作面设计方法通常是在巷道布置中将相邻工作面间留设15～30m的保护煤柱。

The design method of the traditional production face is that people usually remain 15 to 30 meters ' safety coal pillar when they arrange the roads between two ad joint working face .

煤的强度系数对井巷保护煤柱宽度影响分析

Influence of Coal Strength Coefficient on Width of Protective Coal Pillar

用影响椭圆法确定建筑物保护煤柱

Design of coal pillar of building protection by influencing ellipse method

回收大巷保护煤柱时通风系统的优化

Optimization of Ventilation System in Protection of Pillar on Recovery Roadway

保护煤柱计算方法的探讨

Probe into the Method of Protecting Coal Column Retaining and Settings

减少复杂构筑物保护煤柱压煤量方案的探讨

Discussion on the design proposal of the complicate protective coal pillars

开采主运巷保护煤柱的一次成功尝试

Making trial of mining the protective pillar at main conveying roadway

垂线法设计保护煤柱过程的优化

Procedure optimization of coat pillar protected by the weeping line method

我国保护煤柱留设的方法及发展趋势

Protective coal pillar set method and development tendency in China

工业广场保护煤柱开采的相似材料模拟研究

Simulating Study of Protecting Pillar ' in a Coal Mine

设计建筑群保护煤柱的程序开发与应用

The Program Development and Application of Design Architectural Complex Protective Coal Pillar

立井延深预留保护岩柱的设计

Design of Rock Pillar Left in Advance of Shaft Deepening

用后方交会法测量保护煤柱上部建筑物的水平位移

Measurement of Upper Building Horizontal Displacement of Supported Columns Using Resection Method

近距煤层开采巷道保护煤柱实验研究

Test Research on Protective Coal Pillars of Roadways Working in Close-in Seams

保护煤柱开采后地表移动盆地局部二次塌陷

The second-partial caving in subsidence trough after the protective pillar being mined

井筒保护煤柱合理留设的相似材料模拟

Simulation of Reasonably Designed Protecting Pillar in Pit Shaft

保护煤柱设计中几个问题的探讨

Research of some subjects in designing protection coal pillar

留设保护煤柱尺寸的影响因素及变化规律探讨

Probing into influence factors and changing laws of coal pillar for Protection Buildings

本文采用代数射线法留设保护煤柱。

This paper offer the algebra ray method to preserve protective coal pillar .

留设建筑物保护煤柱最佳尺寸的数学模型及求解

The mathematical model and solution for optimization of coal pillar for preventing building

急倾斜煤层石门保护煤柱合理尺寸研究

Research on Reasonable Dimension of Protective Pillar for Cross-cutin Steeply Inclined Coal Seam

利用微机设计保护煤柱

Make use of computer to design protect rib

深部开采条件下保护煤柱备用尺寸的确定方法

Determination method of additional size for protective coal pillar under deep coal mining conditions

山区地面建筑物保护煤柱设计的探讨

An Approach to coal Pillar Design for Protection Buildings on Ground Surface at Mountain Area

基于地表变形预计的矿区保护煤柱留设方法

Method of designing protection coal pillar in mine area based on prediction of surface deformation

截面形状对无防火保护钢柱的抗火性能影响分析

Research on influence of cross-section shape on fire resistance of steel column without fire RESISTINGS

高压注水井套管保护管柱受力分析探讨

Analysis and discuss on the force applied on protecting pipe for well casing under high pressure

村庄保护煤柱开采实践

Practice in village protection pillar mining