Evaluation method of mine submergence process under different conditions of water inrush or permeability

Abstract

The invention discloses an evaluation method of mine submergence process under different water inrush or permeability conditions, which comprises establishing a conceptual model of mine water inrush or permeability submergence process according to the variation characteristics of water inrush or permeability flow rate and the spatial structure characteristics of the mine; constructing one-dimensional directional topological structure model of mine network; the continuity equation and momentum equation are established on the mine section respectively, and the connection equation is establishedat the fork point. Combined with the initial condition and boundary condition, the mathematical model of water inrush or permeability submergence process is established with the water level and discharge as variables. The finite difference algorithm is used to establish the numerical model of mine water inrush or permeability submergence process and to solve it. Quantitative evaluation of mine submergence process is carried out according to the result of solution. The invention can accurately calculate and reasonably evaluate the mine submergence process on the premise of guaranteeing the calculation stability and efficiency according to different water inrush (permeability) conditions.

Description

technical field [0001] The invention relates to the technical field of mine water disaster prediction and prevention, in particular to an evaluation method for mine submersion process under different water inrush or water permeability conditions. Background technique [0002] Due to the complexity and uncertainty of my country's geological and hydrogeological conditions and the characteristics of being easily affected by mining, water inrush (seepage) accidents have become one of the main threats to mining during mine construction. Water breakthrough conditions refer to the position of water breakthrough and the flow time curve of water breakthrough. Due to the anisotropy and non-uniformity of geological bodies, water inrush conditions cannot be accurately predicted. At the same time, with the increase of mining depth, deep rock mass exhibits obvious nonlinear mechanical properties, and engineering geological conditions become More complicated, the forms of mine water inrus...

AI Technical Summary

Problems solved by technology

However, due to the complex spatial structure model of the roadway, this method has great difficulties and limitations in simulating the process of water inrush and spread in a complete mine, and LBM is good at solving the problem of water flow with a small Reynolds number and a relatively simple boundary. The sudden (permeable) water volume can reach 20m3 / s, which belongs to high-speed water flow, and complex water flow phenomenon will be generated at the inflow boundary due to severe turbulence. At this time, LBM will no longer adapt

[0010] Looking at the above three types of calculation methods, in terms of the evaluation method of mine water inrush submergence process, the existing technology is unable to deal with any water inrush conditions. While accurately revealing the physical laws of mine water inrush (through) flow, calculation And evaluate the complete outburst (permeable) water spreading process and mine submersion process

This makes the existing theoretical research in this area unable to meet the needs of mine safety production, and cannot effectively help mines formulate reasonable emergency rescue plans and programs when dealing with various water disasters.

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