Study on Geostress Measurement and Distribution Law of Dynamic Phenomenon Frequently Occurred in Mining Area

In order to analyze the dynamic phenomenon frequently occurred of Laliang Mining Area, the theoretical analysis and the site measurement method were applied to the study on the mine underground stress measurement and distribution law.The hollow inclusion type stress releasing method was applied to the measurem ent of the in-situ rock stress.The ground stress distribution law of the mining area was obtained and the correlation of the ground stress and dynamic phenomenon frequ ently occurred was analyzed and studied.The results showed that the ground stress field of Luliang Mining Area was mainly as the horizontal structural stress and the h orizontal stress influence had a remarkable orientation.The max azimuth angle of the horizontal stress was concentrated between 96.96°- 109.11°and had a high axial i ncluded angle to the gateway of the coal mining face.The max azimuth angle was 77 .85°in average and was the reason to cause the dynamic disaster frequently.