煤柱

防水煤柱安全评价的流固耦合分析

Fluid-Solid Coupling Analysis of the Safety of the Waterproof Coal Pillar

因此煤柱的回收是目前急需解决的问题。

So pillar extraction is a problem to be solved presently .

本文首先采用有效区域理论计算了煤柱载荷P煤；

In the paper , the load of coal pillars is firstly calculated by effective area theory ;

UDEC模拟厚松散层及超薄覆岩条件下开采防水煤柱覆岩突水可能性

UDEC simulation of the water-pouring probability in exploiting waterproof coal pillars under the conditions of thick loose bed and ultrathin overlying strata

研究认为影响250102工作面发生冲击矿压的主要因素为褶曲构造、煤层冲击倾向性、坚硬顶板、20m煤柱等。

The main factors of influencing the rock burst hazard of 25102 working face are folding structure , burst tendency of coal seam , hard main roof and 20m width pillar and so on .

当煤柱宽度超过23m时，煤柱强度基本不增大的结论，对以后煤柱设计具有一定的参考价值。

The coal pillar intensity basically maintains constant as the coal pillar width surpasses 23 m , which provides a certain reference value to the coal pillar design .

采用岩石破裂过程分析软件RFPA2D系统，对短壁机械化开采的煤柱稳定性进行数值计算与分析。

The stability of coal pillar of the short-wall mining was analyzed systemically by numerical simulation with the rock failure process analysis software ( RFPA2D ) .

根据正交实验结果，提出了改善深井巷道围岩体稳定性的措施。经观测发现，煤柱分为3个区：塑性变形区，煤壁内0～4m；

According to the observation , it is found that the pillar can be classified as 3 zones in stress conditions as follows : ( 1 ) the plastic zone , 0-4 m from the edge of the pillar ;

通过分析解析解与数值模拟结果可知，在一定距离内煤柱越宽巷道受力越大，在此种地质条件下，开采巷道的煤柱留设尺寸为3m时比较符合工程实际。

According to the analytic solution and numerical simulation result , the paper drew the conclusion that the wider of the pillar the larger of the laneway stress , and under this geological condition the 3m of pillars measure of exploitation laneways is more agree with the project practice .

走向条带煤柱破坏失稳的尖点突变模型

Cusp catastrophic model of instability of strip coal pillar along strike

采空区煤柱-顶板系统失稳的力学分析

The analysis of instability of coal pillar & stiff roof system

无煤柱护巷支护技术提高资源回收率

Improving Coal Recovery by Supports Technique of Protecting Road without Pillars

煤柱稳定性的时间相关性分析

Analysis of the time - dependence of the coal pillar stability

煤柱应力分布规律的数值模拟分析

Analysis on digital simulation for stress distribution law of coal pillar

大同矿区的煤柱现状及开采对策

Status-quo and Mining countermeasures of Coal Pillar in Datong Mining Area

矿间防水煤柱合理尺寸的理论分析

Theoretic Analysis of the Rational Size of Water Barrier between Mines

弧岛煤柱水力开采的矿压控制

Rock Pressure Control in Hydraulic Mining of the Isolated Shaft 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

条带开采留设煤柱置换开采方法的数值模拟研究

Numerical Study on Substitution Extraction in Coal Pillar of Strip Mining

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

运输平巷上方的煤柱柱子竖立在狭窄的地基上。

Pillar of ground The column stands on a narrow base .

断层防水煤柱设计的可靠度方法

The Method of Stability for the Design of Fault Waterproof Pillar

伪倾斜柔性掩护支架开采石门煤柱

Pillar Mining of Rock Cross-cut with Pseudo - sloping Flexible Shield

论井下隔水煤柱承压破坏的临界尺寸

Research on critical size of water barrier in underground coal mine

阳泉综放面合理区段煤柱的有限元数值分析

FEM analysis of pillar in the rational section of full-mechanized face

窄煤柱护巷机理的数值模拟分析

Numerical simulation on the principle of supporting roadway with narrow coal pillar

深井沿空巷道合理小煤柱尺寸的确定

Confirmation of Reasonable Pillar Dimension of Roadway along Gob in Deep Mine

运用实测技术确定区段煤柱宽度

Ascertaining the Width of Stage Coal Pillar by Applying the Observation Technology

条带开采煤柱留设对地表建筑物的影响分析

Analysis of Effect of Coal Pillars for Strip Extraction on Surface Buildings

孤岛煤柱综采工作面旋转开采关键技术

Key Technique on Revolving Mining in Gob-Surrounded Pillar with Fully Mechanized Mining