The research on folds fractal features and its relationship to gas outbursts

Abstract：The methods of describing the complex degree of coal seam folds, which include slit_island method, section line method, and axes line method have been given for the first time. The fractal features of the fold section lines, the distribution of fold axes lines and the fold landform have been studied. It has been established that the space distribution of folds obey fractal law. It gives a new method of studying fold structures. The relationship between fold fractal features and gas bursts has been discussed by means of studying two mining districts of certain mine fields. It gives a new way to coal and gas burst prediction.

Keyword：fold structure;fractal;coal and gas burst;