Analyses roof feature of 10~# seam for Huozhuo Xinzhi coal mine,based on the needs of comprehensive mechanical mining cross tunnel support width,by examination calculating and selecting,determines the rational support mode to successful primary apply in Xinzhi cal mine.

Yanwukou section,Dajiangkou mining area is located in Jiangnan section of the southeastern margin of Yangtze platform,in Qianxu coalfield in the Jiangkou synclie middle eastern section,the main coal -bearing strata are Qianyang paragraph,Qixia group under the Permian,the main mining coal seam is 10 coal seam,average seam thickness is about 0.

Forecast of water-inrush from No.10 coalbed's floor in Taoyuan mine;