碱渣堆场废弃地的生态恢复与景观重建途径探索

Study of Landscape and Ecological Restoration of Waste Alkali-Slag Dump

利用天津市塘沽区三号路碱渣堆场废弃地改造和生态恢复为紫云公园的生态恢复工程实践,对科学治理碱渣堆场废弃地的生态恢复进行了研究.采用生态恢复工程的方法,针对碱渣复杂的化学成分和特殊的物理性质,通过制造碱渣工程土填垫低洼地,在堆造山体过程中采取工程措施确保山体的稳定,采取覆盖一定厚度外源种植土的方式以适合植物生长,最后种植以乡土先锋植物为主的人工植被,对天津塘沽碱渣堆场废弃地进行了生态恢复.实现了治理碱渣堆场的目标,并解决了易软化碱渣土堆造山体的工程难题.

Ecological restoration for scientific treatment of waste alkali-slag dump was studied, with an example of the ecological restoration engineering project located on the 3rd Road in Tanggu District of Tianjin, where the waste alkali-slag dump was restored into park landscape named Ziyun Park. In the example, the waste alkali-slag dump was restored by adopting the ecological restoration project method： in accordance with the complex chemical composition and special physical properties, the alkali slag soil was manufactured to fill the downfold, and the engineering measure was adopted in the hill-body building course to ensure its stability, then the hill body was covered with cultivation soil of a certain thickness so that it would be suitable for plants growth, and finally indigenous pioneer plants were cultivated on the hill. The project can achieve objective of treating waste alkali-slag dump, and solve the engineering difficulty of constructing hill-body using easily-softening alkali-slag.