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立足土壤肥力、环境质量角度研究采煤塌陷区不同充填复垦方式的土壤质量差异和优选顺序,能够明晰复垦短期、长期内各种充填复垦土壤质量提升的短板所在,针对性地为复垦土地后期管护的选取和变更提供依据。以徐州市贾汪区为例,基于土柱实验和野外采样,采用模糊数学法、内梅罗指数法进行土壤肥力、环境质量评价,分别立足土壤肥力和重金属污染的角度对不同充填复垦方式进行复垦后短期、长期的优选排序研究。结果表明:基于土壤肥力质量的充填复垦方式优选排序,在复垦后短期内表现为湖泥>粉煤灰>煤矸石>建筑垃圾,长期表现为粉煤灰>煤矸石>湖泥>建筑垃圾;基于土壤环境质量的充填复垦方式优选排序,在复垦后短期内表现为湖泥>建筑垃圾=煤矸石>粉煤灰,长期表现为湖泥>建筑垃圾>煤矸石>粉煤灰。
From the perspective of soil fertility and environmental quality, the differences of soil quality and sequence of different reclamation reclamation ways in coal mining subsidence area can be studied. It is clear that short-term and long-term reclamation of various short- The basis for the selection and change of late management and reclamation of reclaimed land. Taking Jiawang District of Xuzhou City as an example, based on the soil column experiment and field sampling, the fuzzy mathematics and Nemerow index were used to evaluate the soil fertility and environmental quality. Based on the soil fertility and heavy metal pollution, Short-term and long-term prioritized studies of reclamation. The results showed that the order of reclamation reclamation based on soil fertility quality was better than reclamation. In the short term after reclamation, lacustrine> fly ash> gangue> construction waste, and long-term performance was fly ash> gangue> lake mud> Trash; the priority of reclamation reclamation based on soil environmental quality is ranked in the order of lakes> construction wastes = gangue> fly ash in the short term after reclamation, and lacustrine mud> construction waste> gangue> fly ash .