一、概况木里煤田位于祁连山区的大通山和托赖山之间的雪霍力、木里、江仓、热水一带,见附图,属多年冻土区。地势从东往西逐渐增高,两侧山区海拔在3900～4700米左右,中间谷地为平缓丘陵,表面多为草原沼泽地所复盖。山区基岩大部分裸露,第四系盖层甚薄或缺失,谷地中侏罗纪煤系地层之上复盖有较厚的冰碛～冰水堆积物。草原沼泽地 I. Overview Muli coal field is located in the Qilian mountains between Datong and Torra mountain snow Huli, Muli, warehouse, hot water area, see the attached map, is a permafrost. The terrain gradually increased from east to west, both sides of the mountain at an elevation of 3900 ~ 4700 meters, the middle valley is gentle hills, mostly covered by grassland swamp. Most of the basement rocks in the mountains are bare and the Quaternary caprices are very thin or absent. The Jurassic coal measures strata in the valleys are covered with thick moraines ~ ice water deposits. Prairie wetlands