A METHOD FOR ANALYZING THE STABILITY OF STEP SLOPE UNDER BLASTING

A technology of step slope and stability, applied in special data processing applications, instruments, electrical digital data processing, etc., to achieve reasonable evaluation indicators and accurate calculation results

Active Publication Date: 2018-01-23
ANSTEEL GRP MINING CO LTD
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  • Abstract
  • Description
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Problems solved by technology

However, regardless of the limit equilibrium method or numerical simulation method, fixed material parameters are used for analysis and calculation, and dynamic inversion analysis and correction of material parameters are not carried out with the help of monitoring results.

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  • A METHOD FOR ANALYZING THE STABILITY OF STEP SLOPE UNDER BLASTING
  • A METHOD FOR ANALYZING THE STABILITY OF STEP SLOPE UNDER BLASTING

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Embodiment Construction

[0041] An embodiment of the present invention will be further described below in conjunction with the accompanying drawings.

[0042] In the embodiment of the present invention, the stability analysis is carried out to the step slope of an open-pit iron mine, and the specific method steps are as follows figure 1 shown, including the following steps:

[0043] Step 1, carry out data collection to the on-site step slope, and sample the platform of the on-site step slope;

[0044]The data collection includes the geometric form of the step slope, stratum characteristics, structural surface distribution, groundwater conditions and blasting parameters; the geometric form includes: step slope height, step slope angle, safety platform width and step Quantity; the stratum characteristics include the number of strata, the rock type of the stratum, the inclination and dip angle of each stratum; the distribution of structural planes includes the number of structural planes, the occurrence...

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Abstract

The invention discloses a method for analyzing the stability of a step slope under the action of blasting, which belongs to the technical field of open-pit mining. Compared with the traditional method, the invention combines numerical simulation with vibration monitoring, and uses the vibration information of the slope body to correct The material parameters of the slope body can provide more accurate input parameters for the numerical simulation; the numerical simulation method coupled with the finite element and discrete element is used for mechanical analysis, which can completely describe the progressive failure process of the slope under the blasting load, and the calculation results It is more accurate; using the degree of rupture to evaluate slope stability can directly reflect the damage and rupture inside the slope, and the evaluation index is more reasonable.

Description

technical field [0001] The invention belongs to the technical field of open-pit mining, and in particular relates to a method for analyzing the stability of a step slope under the action of blasting. Background technique [0002] Under the repeated action of blasting vibration, the stepped slope of the open-pit mine will deteriorate the material properties, which will lead to the instability and destruction of the slope. At present, the methods for analyzing slope stability mainly include limit equilibrium method and numerical simulation method. [0003] Based on the rigid-plastic assumption and the assumption of consistent motion, the limit equilibrium method uses a single degree of freedom to characterize the overall stability state of the landslide mass, so it cannot describe the impact of the non-uniform motion of the slope on its stability. In addition, the limit equilibrium method is a static stability analysis method, and the dynamic problems can only be analyzed aft...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 潘鹏飞孙厚广冯春韩忠和范晓明乔继延郭汝坤李世海
Owner ANSTEEL GRP MINING CO LTD
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