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Slope stability fine evaluation method

An evaluation method and refined technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as non-unique results, large scale division of blocks, and inability to divide blocks into micro-sizes, etc., to achieve a solution System calculation problems, improve reliability and accuracy, and the effect of precise calculation accuracy

Inactive Publication Date: 2014-04-23
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

For the high slope formed by the development of deep resources in large-scale open-pit mines, conventional calculation methods cannot divide the bars into micro-sizes in both horizontal and vertical directions. The only one, coupled with the uncertainty of rock mass strength parameters, directly affects the reliability of the evaluation results, thereby affecting the safety of slope design and normal production. Therefore, the reliability of the evaluation results needs to be improved urgently

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Embodiment Construction

[0015] The specific implementation method of this method can be described as follows in conjunction with the accompanying drawings and examples.

[0016] The open-pit stope slope of a gold-copper mine in Xiamen is relatively large, the highest elevation of the east side is +1036m, the bottom elevation of the open-pit stope is +148m, and the maximum elevation difference is 880m. Therefore, ensuring the safe production of mines is both a prerequisite and a key part of not affecting the surrounding environment. It is very difficult to find a reasonable limit slope angle under the condition that the design safety factor Fs=1.15 is given and the boundary line of the pit bottom cannot be changed. The method provided by this patent overcomes this difficulty.

[0017] The detailed steps of the slope refinement evaluation method are as follows:

[0018] 1) Evaluation of the stability of the original design 48° slope. Import the geological parameters of the original design slope into ...

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Abstract

The invention discloses a slope stability fine evaluation method, and belongs to the field of slope engineering. The slope stability fine evaluation method solves a reliability problem of the slope stability evaluation result and improves the accuracy of the slope stability evaluation result. The method comprises the following steps of: mathematically manipulating a normal ultimate equilibrium evaluation method to a generalized excess thrust method under any state in a generalizing way, and then based on a linear programming theory, a finite element academic method and a numerical analysis method, creating a micro-unit system to perform fine evaluation of the slope stability. Therefore, the reliability of the slope stability evaluation result can be improved, and the slope safe state can be reflected truly.

Description

technical field [0001] The invention relates to the field of slope engineering, in particular to slope stability evaluation technology and safety control technology. Background technique [0002] The evaluation of slope stability is mainly based on the calculation results of the rigid body limit equilibrium method. For the high slope formed by the development of deep resources in large-scale open-pit mines, conventional calculation methods cannot divide the bars into micro-sizes in both horizontal and vertical directions. Only, coupled with the uncertainty of rock mass strength parameters, it directly affects the reliability of the evaluation results, thereby affecting the safety of slope design and normal production. Therefore, the reliability of the evaluation results needs to be improved urgently. Contents of the invention [0003] In the present invention, the product of the stability coefficient and the sliding force is regarded as the sliding force under the conditi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 孙世国冯少杰宋志飞史家欢赵雪芳
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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