Exploration and Practice of Risk Control Engineering for Typical Chemical Polluted Plots Not Yet Developed

本地块为沿江1公里区域内化工企业关闭污染地块，根据前期调查及风险评估结果，本地块污染风险不可接受。为保护周边敏感受体，基于地块暂不开发利用、环境风险特征、工程技术等因素，采用水平阻隔等措施进行地块风险管控。通过严密的设计及精细化施工后经风险管控效果评估，结果表明，达到既定的风险管控目标。本地块的工程实践为类似暂不开发污染地块风险管控的实施提供了良好的经验和参考案例。This plot is a polluted plot of chemical enterprises closed in 1 kilometer along the river. According to the results of previous investigations and risk assessment, the pollution risk of this plot is unacceptable. In order to protect surrounding sensitive receptors, horizontal barriers and other measures are adopted to control the plot risk based on factors such as the development and utilization of the plot not yet developed, environmental risk characteristics, engineering and technology. The results of the risk control effect assessment after rigorous design and refined construction show that the established risk control objectives have been achieved. The engineering practice of this plot provides good experience and reference cases for the implementation of risk control of polluted plots that are not yet developed.