Composite barrier for preventing horizontal diffusion and migration of underground water layer pollutants and application thereof
A pollutant and barrier technology, applied in the field of pollutant control, can solve the problems of uneconomical use, inability to solidify cement, and limited application range, etc., and achieve the effects of simple construction, good horizontal migration, and good anti-seepage effect
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[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention, but the examples cited are not intended to limit the present invention.
[0028] Such as figure 1 with 2 As shown, the composite barrier 1 of the present invention for blocking the horizontal migration of groundwater layer pollutants is composed of a water-soluble polymer film 11 encapsulating swelling clay 10.
[0029] The requirement of the present invention for the swellable clay 10 is that when the water-soluble polymer film 11 is dissolved, the swellable clay 10 will expand with water, and its expansion coefficient is ≥10 times. The clay after expansion can form a permeability coefficient ≤0.5×10 -8 The impervious wall of cm / sec is used to block the horizontal migration of pollutants in the groundwater layer. After experimental screening, the expansive cla...
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