Two-dimensional analysis method for retaining effect of intermediate bridge on side slope

A two-dimensional analysis and slope technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems that the stability of irregular slopes cannot be quantitatively understood, and achieve great scientific significance and broad application prospects Effect

Pending Publication Date: 2021-12-03
LIAONING TECHNICAL UNIVERSITY
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Problems solved by technology

[0003] In engineering, the two-dimensional limit equilibrium method is the most widely used. The existing three-dimension

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  • Two-dimensional analysis method for retaining effect of intermediate bridge on side slope
  • Two-dimensional analysis method for retaining effect of intermediate bridge on side slope
  • Two-dimensional analysis method for retaining effect of intermediate bridge on side slope

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Embodiment Construction

[0065] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0066] The plane shape of the intermediate bridge in this embodiment is as figure 1 As shown, the intermediate bridge is set in the middle of the No. I mining pit and the No. II mining pit, and acts as a support for the slope. A two-dimensional analysis method for the retaining effect of the intermediate bridge on the slope in this embodiment is as follows.

[0067] Step 1: Carry out mechanical analysis on the intermediate bridge, and conclude that the essence of the retaining effect of the intermediate bridge on the slope is a shear reaction force, and its determinant factor is the shear force of the bottom interface of the intermediate bridge; combined with engineering ...

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Abstract

The invention discloses a two-dimensional analysis method for the retaining effect of an intermediate bridge on a side slope. The method comprises the steps: carrying out the mechanical analysis of the intermediate bridge, and carrying out the three-dimensional modeling; then acquiring the geometrical shape of the section of the slope, dividing the model into three areas, and respectively calculating the volume and the anti-sliding force of each area; and finally, performing equivalent anti-sliding force representation on each area, and combining similar items of the anti-sliding force and the equivalent anti-sliding force to obtain the equivalent cohesive force and the equivalent internal friction angle of each area. According to the method, quantitative understanding of the retaining effect of the middle bridge on the side slope under the conditions of pit mining and middle bridge reserving is effectively achieved, conversion from the three-dimensional mechanics problem to the plane strain problem is achieved, and the method also has a great promotion effect on development of subjects such as rock and soil mechanics and structural mechanics.

Description

technical field [0001] The invention relates to the technical field of open-pit mining, in particular to a two-dimensional analysis method for the retaining effect of an intermediate bridge on a side slope. Background technique [0002] In order to reduce the amount of infrastructure construction, shorten the transportation distance and control the stability of the slope, open-pit coal mines often adopt separate pit mining in the early stage of construction or even for a long period of time, and form intermediate bridges in adjacent open-pit pits. In order to recover the coal resources covered by the intermediate bridge, the intermediate bridge must be dismantled in the subsequent production process. During the dismantling process, the supporting effect of the intermediate bridge on the slope gradually weakens, and improper handling will lead to large-scale landslides. Engineering practice shows that the intermediate bridge in adjacent open-pit pits can improve the stability...

Claims

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Application Information

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IPC IPC(8): G06F30/13G06F30/20G06F119/14
CPCG06F30/13G06F30/20G06F2119/14
Inventor 王东梁祖超李广贺李雁飞周志伟张岩王艳婷刘金尧贺开
Owner LIAONING TECHNICAL UNIVERSITY
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