Method and system for inverting underground mining parameters based on InSAR and Okada models

Abstract

The invention provides a method and a system for inverting underground mining parameters based on InSAR and Okada models. The method comprises the following steps: acquiring surface deformation of a mining area by using an InSAR technology; constructing a function relationship between the surface deformation quantity and the model parameters; and according to the surface deformation quantity and the function relationship, obtaining actual mining parameters by adopting a Bayesian inversion algorithm. According to the method, the earth surface deformation caused by underground mining is obtained through a time sequence synthetic aperture radar interferometry technology, and denser original data is provided for inversion. Besides, for a mining area working face, under the condition that mining parameters are unknown or few mining parameters are known, an Okada model of underground mining surface deformation is established, reliable actual mining parameters are obtained through a Bayesian inversion algorithm by means of surface deformation observation data collected by the InSAR, and scientific formulation of an underground mining plan, monitoring of border crossing mining and the like are facilitated.

Description

technical field

[0001] The present application relates to the field of mining technology, in particular to a method and system for inverting underground mining parameters based on InSAR and Okada models. Background technique

[0002] Mining refers to the technology and science of using nature as the object of labor to obtain natural resources through mining and other means. Mining in a broad sense also includes the extraction of coal and oil. The surface deformation caused by mining is the intuitive expression of the mining length, width, depth and other parameters of the underground working face on the surface. The mining deformation model is usually used to predict the mining deformation. This model is a probability integral model, which needs to know the mining parameters such as the mining length, width, and depth of the underground working face. However, it is often difficult to obtain mining parameters. For some unknown underground mining parameters or known few minin...

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