孤山航电枢纽工程弃渣综合利用研究

Study on comprehensive utilization of spoil for Gushan Navigation and Hydropower Project

山区大中型工程建设往往产生大量弃渣,合理处置和综合利用弃渣是工程水土保持的重点和难点。为减小弃渣对地表扰动和对环境的影响,以汉江孤山航电枢纽工程为例,在弃渣组成和可用性分析基础上,结合项目实施特点、施工时序等方面充分探讨了弃渣的综合利用可行性,并提出了围堰填筑备料、场地填筑、地方建设填筑、弃渣造地等弃渣合理利用方向。结果表明:孤山航电枢纽工程弃渣综合利用方案在安全消纳弃渣的同时节省了工程投资,实现了弃渣资源化利用和保护周边生态环境的目标,可为后期同类工程提供参考。

The construction of large and medium-sized projects in mountainous areas often produces a large amount of waste slag.How to dispose and comprehensively utilize waste slag is the key and difficult point of water and soil conservation in the project.For the purpose of weakening the influence of waste slag on disturbing surface as well as on the environment,Gushan Navigation and Hydropower Project on Hanjiang River was studied as an example.The feasibility of comprehensive utilization of waste slag was analyzed based on the analysis of waste slag composition and availability,combined with the characteristics of project implementation and construction sequence,and the reasonable utilization directions of waste slag were put forward,such as cofferdam filling,site filling,local construction filling,and waste slag reclamation.The results showed that the comprehensive utilization schem of spoil for Gushan Navigation and Hydropower Project on Hanjiang River could save project investment while safely consuming waste slag,achieved the goal of recycling waste slag and protecting the surrounding ecological environment.It can also provide reference for similar projects in the later stage.