Vulnerability Assessment Of Coal Floor Groundwater Bursting Based On Variable Weight Theory

In order to effectively solve the problem of the traditional constant weight model can not reflect that situation when the index values of main controlling factors mutation and the relation of main controlling factors changes their weights should also be changed in the course of forecast and assessment of coal floor groundwater bursting. The paper introduces theory of variable weight to the vulnerability evaluation of coal floor groundwater bursting and constructs the status variable weight vector and variable weight model that meet the law of forecast and assessment of coal floor groundwater bursting, proposes methods to determine variable weight interval and model parameters. Meantime, taking the typical mineral region of Yuxian for instance, we used variable weight model to predict the vulnerability of the coal floor groundwater bursting, and compare with the assessment of the traditional constant weight model, it’s proved that the evaluation effect of variable weight model is more better.,improving the accuracy of the evaluation. This shows feasibility and practical significance of the method. This paper has also studyed variable weight law and parameter sensitivity of variable weight model. It can provide a reference for future related research.