磷石膏岩溶发育机理研究及工程处理

The Study on Mechanism of Phosphogypsum Karst Development and Engineering Treatment

磷石膏可以直接为水所溶蚀,磷石膏的特殊结晶形态以及其中的杂质进一步影响磷石膏的溶解特性,从而产生磷石膏的岩溶现象。堆放在碳酸盐岩地区的磷石膏由于复合岩溶作用的影响,还会带来水文、工程地质等方面的问题,磷石膏的岩溶现象是影响渣场稳定、渣坝稳定、地下水环境的特殊问题。提出了提高磷石膏渣坝稳定性、防止磷石膏渣场渗漏和保护地下水环境的工程措施。

Phosphogypsum can be corrosioned directly by the water. The special crystal shape and impurity of phospho- gypsum also affect its dissolution feature, which brings phosphogypsum karst phenomena. The influence of compound karst of the phosphogypsum pilling up the carbonate rocks area will bring hydrology, engineering geology questions. The phosphogyp- sum Karst is a special question that affects the stability of stack, dam and ground water environment. Some engineering treatment countmeasures about enhancing stability of phosphogypsum dam, prevent leakage of stack and protect the ground water environment be gived.