Horizontal barrier method for risk management and control of polluted plot

The invention provides a horizontal barrier method for risk management and control of a polluted plot, and belongs to the technical field of the risk management and control of the polluted plot. The method comprises the following steps: 1) leveling a ground surface, clearing the plot and removing plants, leveling the ground surface to form a slope, and pre-digging a rainwater guide and drainage system base trench, wherein the slope gradient of the slope is 0.3%-8%; 2) setting up horizontal barriers on the ground surface, firstly laying a flexible material lining on the ground surface, and thenusing automatic spraying equipment to spray a hybrid fiber concrete covering layer on the surface of the flexible material, wherein the thickness of the covering layer is 2-10mm; 3) performing rainwater guide and drainage control; 4) setting a groundwater monitoring well; and 5) performing later maintenance. According to the invention, the horizontal barrier method can be used for risk managementand control of a persiste