A collaborative dynamic prediction method of overlying rock and surface subsidence induced by coal mining

Abstract

The invention relates to a cooperative dynamic prediction method of overlying rock and surface subsidence induced by coal mining, which includes the collection of geological parameters of the working face in the mining area, the determination of the predicted parameters based on the probability integral method, the determination of the time series time function model based on the measured maximum subsidence point, and the determination of the surface movement. Deformation finalization, dynamic prediction, and overburden internal movement deformation finalization and dynamic prediction are five steps. On the one hand, the present invention has a simple system construction structure, convenient data collection and high efficiency and precision, which can effectively improve the accurate and continuous prediction of various complex deformation data of overlying rocks in underground resource extraction mining areas; on the other hand, it has efficient data calculation capabilities, While improving the prediction accuracy of the overlying rock in the underground resource extraction mining area, it is also possible to accurately predict the deformation and settlement trend of the overlying rock at any position within the mining area based on the existing data, which improves the monitoring accuracy and efficiency of the mining area settlement operation. In addition, it can provide a reliable reference for the construction planning of the mining area and the subsequent restoration and utilization of the mining area.

Description

technical field [0001] The invention relates to a dynamic prediction method of surface subsidence, specifically a method for cooperative dynamic prediction of overlying rock and surface subsidence induced by coal mining. Background technique [0002] When a large number of underground resources such as coal seams are mined and mined for a long time, the original stress structure of the rock stratum will be damaged, resulting in deformations such as caving, breaking, bending, sinking, fracture, layer separation, and movement of the overlying rock, and As a result, deformations such as subsidence, fracture, and subsidence are caused on the surface, causing serious damage to surface structures, buildings on the surface, water bodies, etc., and causing great impact and safety hazards on industrial and agricultural production, commercial activities, and daily life. For this problem, the continuous prediction of settlement and other situations is mainly carried out by using the tr...

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Problems solved by technology

[0002] When a large number of underground resources such as coal seams are mined and mined for a long time, the original stress structure of the strata will be damaged, resulting in deformations such as caving, breaking, bending, sinking, fracture, separation, and movement of the overlying strata, and As a result, deformations such as subsidence, fracture, and subsidence are caused on the surface, causing serious damage to surface structures, buildings on the surface, water bodies, etc., and causing great impact and safety hazards on industrial and agricultural production, commercial activities, and daily life. For this problem, at present, the continuous prediction of settlement and other conditions is mainly carried out by using the transmission leveling method. Although it can meet the needs of use to a certain extent, on the one hand, there are low monitoring efficiency, high operation difficulty and high cost, and on the other hand, the monitoring operation Only the data after subsidence can be summarized, and it is impossible to accurately predict the overall settlement and deformation of the mining area or underground resource mining range. The role of guiding the surface to carry out activities such as industrial and agricultural production and construction is relatively small, and cannot effectively meet the needs of actual work

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