| In view of the problems of gangue stacking, environmental pollution, blocking rivers and causing geological safety, explored the gangue for the main material of cultivation matrix and low-yield soil amendment. Based on the main research goal of the feasibility for gangue being used in cultivation matrix, collected gangue from Binxian and Shenmu as for materials, has researched the specific gravit
y, water repellency, improving technology and effect for the gangue. The results showed that: The specific gravity were 1.89 g·cm-3 and 2.06 g·cm-3, respectively, for the gangue from Binxian and Shenmu. The Shenmu gangue had slight water repellency, and the water repellency could be eliminated by mixed more than 6.31% cultivated soil. However, the Binxian gangue had serious water repellency, and needed mixing 0.2% wetting agent solution, the water-repellence c
ould be eliminated, also had a longed lasting improving effect. Accordingly, as for the physical characteristics of gangue, it had feasibility to use gangue in the cultivation matrix by a certain improvement although it had various degree of water repellency. |