Repeatedly mined surface deformation predicting method
A technology of surface deformation and prediction method, which is applied in the field of foundation soil survey, construction, infrastructure engineering and other directions, and can solve problems such as inability to predict surface deformation.
Inactive Publication Date: 2014-04-16
LIAONING TECHNICAL UNIVERSITY
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[0002] With the increasingly scarce coal resources, the problem of "three undercuts" coal pressure is becoming more and more prominent. The mining of coal resources will inevitably have an impact on the surface. Accurately grasping the degree of impact after mining is an important basis for surface protection and program design in advance. Among the existing surface mining deformation prediction algorithms, the only algorithm that has been verified and generally recognized by the field is the surface deformation prediction algorithm after single-face mining, which cannot predict the surface deformation after multi-face mining
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[0113] An embodiment of the present invention will be further described below in conjunction with the accompanying drawings.
[0114] The surface movement and deformation process of multi-face mining is different from that of single-face mining:
[0115] (1) Surface movement and deformation process of single face mining
[0116] The surface mobile basin is gradually formed during the advancement of the working face. When the mining face advances forward from the opening of the hole, the overlying strata gradually sinks with the increase of the advancing scale and time of the working face, and the influence of mining gradually spreads to the surface, causing the surface to sink, and then forming a slope Deformation, curvature deformation, horizontal movement and horizontal deformation, etc. As the working face continues to move forward and time goes by, the area of the goaf continues to increase, the influence range of the surface is also gradually expanding, and the basin ...
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The invention discloses a repeatedly mined surface deformation predicting method and belongs to the technical fields of mining under 'three bodies' and digital mining. According to the method, by means of superposition of surface inclining values, superposition of curvature values, superposition of horizontal moving values and superposition of horizontal deformation values, multi-working-surface mined surface deformation prediction is effectively achieved; furthermore, the method can also be used for conducting prediction on strip mined surface deformation, one-position multi-working-surface mined surface deformation and different-position mined overlapping region deformation.
Description
technical field [0001] The invention belongs to the technical field of "three-down" mining and digital mines, and in particular relates to a method for predicting surface deformation in repeated mining. Background technique [0002] With the increasingly scarce coal resources, the problem of "three undercuts" coal pressure is becoming more and more prominent. The mining of coal resources will inevitably have an impact on the surface. Accurately grasping the degree of impact after mining is an important basis for surface protection and program design in advance. Among the existing surface mining deformation prediction algorithms, the only algorithm that has been verified and generally recognized by the field is the surface deformation prediction algorithm after single-face mining, which cannot predict the surface deformation after multi-face mining. [0003] The surface movement and deformation process of single-face mining is much simpler than the surface deformation process...
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IPC IPC(8): E02D1/00
Inventor 题正义秦洪岩王猛杨艳国李洋姜璐董强强曹艺钟
Owner LIAONING TECHNICAL UNIVERSITY