Method for obtaining mining slope deformation rule in gully development mining area

Abstract

The invention discloses a method for obtaining the deformation rule of a mining slope body in a gully development mining area. The method comprises the following steps: (1) collecting and acquiring data related to remote sensing observation and mining geological conditions; obtaining a high-precision two-dimensional image in the mining area range; (2) establishing a laboratory physical model of the gully slope body and the gully slope body in the mining area; firstly, a working face surface three-dimensional terrain is established; constructing a mining area earth surface DSM in each time period before mining, during mining and after mining; then establishing a physical model of the gully slope laboratory; (3) extracting morphological change characteristics of the mining slope body in thegully development mining area; performing comparison and feature extraction on the mining area surface DSM obtained in the step (2) in different time periods to obtain gully shape parameter change conditions in each time period; (4) acquiring spatial-temporal distribution and deformation rules of deformation characteristics of the mining slope body in the gully development mining area; and finally, according to the surface DSM of the mining area and the change condition of the form parameters of the gully, the deformation development law of the gully slope body under the mining influence of the underground mining working face is obtained through analysis from the internal and external aspects.

Description

technical field [0001] The invention relates to a method for obtaining the deformation law of a mining slope in a gully-developed mining area, and belongs to the technical field of coal mining. Background technique [0002] With the continuous implementation of the national policy of developing the western regions of our country, the development focus of coal resources has shifted to the western regions. However, shallow coal seams (buried depth less than 200 meters) generally exist in the western coalfields. At the same time, the bedrock is thin and overlying a thick loose layer, and the topography and landforms are diverse, with large surface fluctuations and a relative height difference of more than 100 meters. Northwest Inner Mongolia, Shaanxi Most of the main mining areas such as Shanxi and Shanxi are ancient gully development mining areas. The erosion of gullies is an important cause of land degradation, resulting in the loss of water and soil in a certain range and t...

AI Technical Summary

Problems solved by technology

However, underground mining parameters are seldom used in the study of gully morphology, and there is no verification of the impact of underground mining activities on gully morphology, and there is no follow-up of the later development.

Most of the existing overlying rock activity detection methods are obtained by physical numerical simulation. This method uses the established gully geological model to analyze the influence of gully topography on the pressure of the excavated slope, but the shape of the excavated slope has not been determined. It was built according to the actual terrain, and at the same time, it did not measure and verify the occurrence of surface deformation on the spot

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