Water and ice environments of open pit slope in high altitude area

In order to know the changing law of water in frozen rock or soil slope and stability of slope in open pit coal mines in high altitude area, and relying on the excavation process of pit in Juhugeng mining area, water and ice environments were analyzed by surveying and monitoring methods. The results show that permafrost widely distributes in the coal mine area, and several kinds of slopes have been created during the pit excavation. Because strata characteristics influence the water and ice form in slope rock or soil mass, temperature and water are changing in the rock or soil mass after frozen rock or soil are exposed in air and sunshine, so the stable temperature and water environment of original frozen rock or soil change with air temperature. Surface rock or soil mass of slope changes from permafrost to seasonal frozen rock or soil. Being influenced by air temperature and water, the water and ice environments have complex change. From geological survey, classifying and generalization of ground temperature, water and ice environments, the results could be scientific foundation for study of rock damage rule and rock slope stability in freeze-thaw cycling environments.