Determination of the scheme and parameters of coal seam water injection in large-scale full-mechanized caving;

Physicochemical properties of magnetized water are analyzed and the mechanism of coal seam injection of magnetized water is studied by theoretical analysis in order to increase effect of coal seam water injection in this paper.

Based on the results of the experiments in Yaoqiao Coal Mine and the data obtained in laboratory, the water injection properties of coal seam are determined, the suitable method and parameters of coal seam water injection designed, and the opimum concentration of wetters is achieved.

This paper has made an analysis of the dynamics and the course of coal seam water infusion with the purpose to decrease the dust in the coal mine production.

Guided by the thought of object-oriented, the traits of coal seam water infusion were analyzed.

But coal seam water infusion is a non-linear problem with extremely complexity,and it can hardly be solved by traditional mathematical methods because it is influenced by many factors.

The seam water injection is an effective measure to control coal dust concentration.

In order to reduce the dust density of the fully mechanized coal mining face and base on the analysis of the seam water injection and dust-proof mechanism,the paper provided the combined seam water injection method and introduced the method to set up the water injection parameters.

This research can be applied as a theoretical basis for the water injection in dust controls.

Law of water seepage in water injection into coal seams and parameter determination

Numerical simulation of water injection into coal seam throughlong drill hole and determination of its reasonable parameters;