Probability-integral-method based surface movement deformation predication method for any mining working faces

Abstract

The invention discloses a probability-integral-method based surface movement deformation predication method for any mining working faces. According to method, a vector product method is adopted for processing mining areas in any shapes, each processed mining area is divided into a plurality of mining areas similar to rectangles along the strike to perform calculation, surface movement deformation values for the whole mining areas are calculated through accumulation, and predication of the surface movement deformation values of the mining areas in any shapes, drawing of two-dimensional, three-dimensional and cloud pictures and output of calculation data files are realized through python language programming. The innovative surface movement deformation predication method for the any mining working faces is implemented with the assistance of computer technology. The surface movement deformation predication method has the advantages that calculation of the surface movement deformation values of the mining areas with different shapes is realized; surface movement deformation predication accuracy is improved; a reliable basis is provided for prevention and treatment of damage to surface buildings and surfaces, and economic loss and environment damage are reduced; the method is convenient to use, rapid in calculation speed and the like.

Description

technical field [0001] The invention relates to a method for predicting ground movement and deformation, in particular to a method for predicting ground movement and deformation of an arbitrary mining face based on a probability integral method. Background technique [0002] Probability integral method is a commonly used method for predicting surface movement and deformation in China. It is based on random medium theory. Probability integral is used to express the prediction formula of surface movement and deformation caused by micro-unit mining, so that the superposition principle is used to calculate the surface movement caused by the entire mining. and deformation. In the actual application process, since the surface movement and deformation at any point is expected to be three-dimensional, double integration is required, which is convenient for regular rectangular or approximately rectangular areas, but difficult to calculate for irregular mining areas, especially those ...

AI Technical Summary

Problems solved by technology

In the actual application process, since the surface movement and deformation at any point is expected to be three-dimensional, double integration is required, which is convenient for regular rectangular or approximately rectangular areas, but difficult to calculate for irregular mining areas, especially those with concave shapes. mining area

In response to this problem, different scholars have proposed mining subsidence prediction systems written in different computer languages. Some system calculation methods can only predict mining areas with regular graphics or convex shapes; other systems use trigonometric integrals to calculate mining areas with arbitrary shapes. Surface movement and deformation (dividing the mining area into triangles and adopting the method of direct integration) has a good effect, but it is difficult to calculate when the mining area is an extremely irregular concave figure due to the large number of coal pillars left

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