Coal seam roof water and sand inrush risk evaluation method based on multi-source information fusion

Abstract

The invention discloses a coal seam roof water and sand inrush risk evaluation method based on multi-source information fusion. The method comprises the following steps: comprehensively considering hydrogeological conditions, geological conditions, mining activity influence and other factors; taking the sand bed thickness, the base mining ratio, the sand burst fracture zone development height, thebed rock weathering index, the unit water inflow, the water saturation sand bed thickness, the permeability coefficient and the mining influence index as water and sand burst risk evaluation indexes,and on the basis, through a series of specific implementation steps of establishing a mathematical analysis model, establishing a decision-making level main control factor thematic map, constructinga judgment matrix to determine index weights, superposing the decision-making level main control factor thematic map and the like, finally, displaying the quantified result in the form of a graph by utilizing data storage, spatial data processing and analysis functions and the like of a geographic information system, and outputting a result graph through a graph output system, and achieving waterand sand bursting risk multi-source information partitioning according with the actual situation of a mine.

Description

technical field [0001] The invention belongs to the technical field of coal mining, and in particular relates to a method for evaluating the risk of water and sand intrusion on coal seam roofs based on multi-source information fusion. Background technique [0002] For coal mines with thick loose layers and thin bedrock as the background of geological conditions, water and sand inundation disasters often have the characteristics of sudden, catastrophic, destructive and secondary. Once an accident occurs, there is time left for rescue and disaster relief There are not many opportunities and opportunities, which pose a great threat to the safe production of mines and seriously restrict the development of the coal industry. Therefore, the key to preventing disasters is to predict the risk of water and sand inundation. [0003] At this stage, the prediction and early warning of mine water and sand inrush disasters are mainly based on traditional hydrogeology and engineering geolo...

AI Technical Summary

Problems solved by technology

At present, the prediction and evaluation model research method based on a small amount of geological information is relatively single, and cannot accurately predict the occurrence of sand intrusion accidents. In fact, the risk assessment of water and sand intrusion should not only consider the objective conditions of coal seam occurrence, but also mining activities. Subjective influencing factors, the risk assessment of water and sand inundation should be based on the multi-factor comprehensive evaluation of hydrogeological conditions, geological conditions and mining activities

Images