Feasibility analysis of Yellow River sediment used as the filling reclamation material of mining subsidence landChinese Full Text
WANG Pei-jun;HU Zhen-qi;SHAO Fang;JIANG Zhi-dong;QIAO Zhi-yong;LIU Dong-wen;CHEN Ya-kai;Institute of Land Reclamation and Ecological Restoration,China University of Mining and Technology( Beijing);
Abstract: The shortage and potential contamination of the materials of filling reclamation of mining subsidence land in plain area with high groundwater level is serious. In order to analyze the feasibility of Yellow River sediment used as the filling reclamation material of mining subsidence land,nine soil profile samples of the control farmland and three surface sediment samples of the Yellow River shoal at the upstream of Chengai diversion gate in Liangshan County of Jining City were collected. Soil texture,pH,electrical conductivity,organic matter,nutrient substance and eight heavy metals（ As,Cd,Cr,Cu,Ni,Pb,Zn,Hg） were analyzed by ICP-AES and other methods. The results indicate that the texture type of Yellow River sediment is sandy soil and its capacity to retain water and nutrients is poor; the pH of Yellow River sediment is weakly alkaline,electrical conductivity is very low,but they can meet the requirement as the reclaimed material; the contents of organic matter,total nitrogen,available nitrogen,total potassium,available potassium,total phosphorus and available phosphorus of Yellow River sediment are at the levels of middle,low or very low and its fertility needs to be improved as the reclaimed material; Cd and Hg are not detected in the Yellow River sediment,and the contents of Cr,Cu,Zn,Pb,Ni and As are less than the first and second level values of Environmentalquality standard for soils（ GB 15618—1995）,it won’t cause pollution as the filling reclamation material. It’s feasible for Yellow River sediment used as the filling reclamation material of mining subsidence land,but its fertility and capacity to retain water and nutrients need to be improved.
Keywords：
Yellow River sediment; mining subsidence land; filling reclamation; physical and chemical properties;
- DOI：
10.13225/j.cnki.jccs.2013.0987
- Series：
- Subject：
- Classification Code：
TD88
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