..., and the results were compared with those in the groundwater before test. The mineral morphologies of fracture surfaces before and after test were also examined through SEM scanning. Test results show that there are no obvious variations of SiO 2 and Al 3+ in the outlet solution during the process of seepage...

... coal seam gas trajectory shallow-buried coal seam mining coal bed methane Upstream Oil & Gas movement characteristic fracture surface similar material simulation research coalbed methane displacement coal seam mined slope movement characteristic metals & mining mountainous...