The influence of staggered distance on the failure of floor bed is locally and temporarily defined in double longwall mining on the confined aquifer. When the longwall mining reaches a certain scale, the deepest fai...The influence of staggered distance on the failure of floor bed is locally and temporarily defined in double longwall mining on the confined aquifer. When the longwall mining reaches a certain scale, the deepest failure of floor bed depends on macroscopic technological parameters of mining and geological conditions. The temporary as well as the terminal failure depth does not change with the mining staggered distance (5~30 m). Based on the mining and geological conditions on the 2 635 double longwall mining panel of Yangzhuang Coal Mine, the changes of abutment pressure was observed and numerically simulated. The result shows that the rational staggered distance should be not more than 10 m.展开更多
Steam assisted gravity drainage （SAGD） technology has been industrialized popularization and application in our country, according to the characteristics of Xing group I SAGD experimental zone in liaohe oilfield, SA...Steam assisted gravity drainage （SAGD） technology has been industrialized popularization and application in our country, according to the characteristics of Xing group I SAGD experimental zone in liaohe oilfield, SAGD production stage injection-production parameters such as the operating pressure, Sub - Cool control, steam injection rate, steam dryness, production factor are studied and selected.展开更多
文摘The influence of staggered distance on the failure of floor bed is locally and temporarily defined in double longwall mining on the confined aquifer. When the longwall mining reaches a certain scale, the deepest failure of floor bed depends on macroscopic technological parameters of mining and geological conditions. The temporary as well as the terminal failure depth does not change with the mining staggered distance (5~30 m). Based on the mining and geological conditions on the 2 635 double longwall mining panel of Yangzhuang Coal Mine, the changes of abutment pressure was observed and numerically simulated. The result shows that the rational staggered distance should be not more than 10 m.
文摘Steam assisted gravity drainage （SAGD） technology has been industrialized popularization and application in our country, according to the characteristics of Xing group I SAGD experimental zone in liaohe oilfield, SAGD production stage injection-production parameters such as the operating pressure, Sub - Cool control, steam injection rate, steam dryness, production factor are studied and selected.
