干旱区生态环境知识资源中心

With the fast development of national nuclear industry, it is extremely urgent to disposal the high-level radioactive waste (HLW) properly. Aqishan area lies to the south of Turpan in Xinjiang Province. As one of the important candidate sites for China's HLW repository, it has many potential advantages, such as arid climate, water poverty, sparse population, large-scale granite body, and high crustal stability. The preliminary work proves that: (1) Granite batholith is widely distributed over the Aqishan area, which had formed in Late Hercynian-Early Indosinian period, with a thickness of over one thousand meters; (2) The Aqishan area is in a state of peneplain, with the latest fault activity in Middle Pleistocene and the seismic intensity of VI degree; (3) The total dissolved solids (TDS) of groundwater is up to 100 g/L because of high evaporation intensity, and the isotope data indicate that the groundwater is mainly recharged from atmosphere precipitation. Through an overall evaluation of the Aqishan area, it is found to be the feasible site for China's HLW disposal.