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软岩直边坡稳定性的无量纲分析方法及应用
 

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软岩直边坡稳定性的无量纲分析方法及应用

刘峰1,陈鹏2,廖连烨2

1.中煤平朔集团有限公司, 朔州 0360002. 辽宁工程技术大学,辽宁 阜新 1230003. 辽宁工程技术大学,辽宁 阜新 123000

摘要:论文在综合分析软岩变形破坏特征、机理和规律的基础上,首先提出了软岩直边坡的定义及其界定标准,并依此证明了软岩直边坡的稳定性主要取决于边坡角、边坡高度、粘聚力、内摩擦角和容重等参数。然后采用理论分析和数值模拟的方法推导出用于评价软岩直边坡稳定性的无量纲分析数学模型和方法。

针对宝日希勒露天煤矿采场软岩边坡的特点,利用无量纲分析方法对存在失稳可能性的三个边坡进行了稳定性分析,指出区边坡是稳定的,而区边坡和区边坡存在失稳危险,应采取相应的措施加以控制。

关键词:软岩直边坡;边坡稳定性;无量纲评价方法;

学科分类与代码:440.3510     中图分类号:TD745      文献标志码A

Dimensionless evaluation method and apply on stability analysis of soft rock long slope

LIU Feng1,CHENG Peng2,LIAO LIAN Ye 2

1.ChinaCoalPingshuoGroupCo.,LTD,Shuozhou036000,China;2.Liaoning Technical University,Fuxin 123000, China;3.Liaoning Technical University,Fuxin 123000, China

AbstractBased on the soft rock deformation and failure characteristics, mechanism and laws, Paper put forward the definition of soft rock slope of the straight and standards, then proves that the soft rock slope stability mainly depends on straight slope Angle, slope height, cohesive force, internal friction Angle and the parameters such as density. And deduced straight slope the dimensionless mathematical model and method by theoretical analysis and numerical simulation.

According to the characteristics of the Baorixile open-pit mine of soft rock slope and definition of soft rock slope, partition stope slope.On the basis of partition,comprehensive analysis for each area respectively by finite element method, finite difference method, limit equilibrium method, and dimensionless analysis method to analysis possible instability of the three slope.Analysis results of various methods points out that IV slope is stable, whereas IVzone is unstable, the corresponding measures should be taken to control.

Key WordsSoft rock long slopeSlope stabilityDimensionless evaluation method

 
 


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