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A platform for research: civil engineering, architecture and urbanism
Acid-resistant horizontal anti-seepage structure with tailing sand as main material and construction method
The invention provides an acid-resistant horizontal anti-seepage structure with tailing sand as a base material and a construction method of the acid-resistant horizontal anti-seepage structure. The anti-seepage structure comprises an adsorption salt isolation layer, a polycondensation water-resisting layer and a capillary isolation layer from bottom to top, the polycondensation water-resisting layer is formed by mixing tailing sand, silica sol and tetraethoxysilane, and when the polycondensation water-resisting layer is in an acid environment, under the catalytic action of H < + >, SiO2 precursors are subjected to dehydration condensation to form network structure gel which is distributed in gaps of tailing sand particles in a wrapping connection mode. The adsorption salt isolation layer is used for adsorbing and isolating salt rising along with capillary water in a soil body on the lower portion of the anti-seepage layer structure, the polycondensation water isolation layer is a key layer for the anti-seepage layer structure to achieve the anti-seepage and water interception effect, and the capillary isolation layer is used for blocking part of a lower seepage water body on the interface of two layers of soil of a soil body on the upper portion of the anti-seepage layer structure. The industrial solid waste tailing sand is utilized, resource utilization of the tailing sand is achieved, the characteristics of adapting to the strong acid environment are achieved, and the application scene is wide.
本发明提供了一种以尾矿砂为基材的耐酸性水平防渗结构及其施工方法。所述防渗结构自下而上包括吸附隔盐层、缩聚隔水层和毛细隔断层，缩聚隔水层是由尾矿砂、硅溶胶、正硅酸乙酯混合组成，当缩聚隔水层处于酸性环境时，在H+催化作用下，SiO2前驱体脱水缩合形成网络结构凝胶，包覆连接分布于尾矿砂颗粒间隙。所述吸附隔盐层是用于吸附阻隔该防渗层结构下部土体中随毛细水上升的盐分，缩聚隔水层是该防渗层结构发挥防渗截水效果的关键层，毛细隔断层是用于将部分下渗水体阻滞在该防渗层结构上部土体两层土交界面之上。本发明利用工业固废尾矿砂，实现了尾矿砂资源化利用，适应强酸性环境的特性，可应用的场景较为广阔。
Acid-resistant horizontal anti-seepage structure with tailing sand as main material and construction method
The invention provides an acid-resistant horizontal anti-seepage structure with tailing sand as a base material and a construction method of the acid-resistant horizontal anti-seepage structure. The anti-seepage structure comprises an adsorption salt isolation layer, a polycondensation water-resisting layer and a capillary isolation layer from bottom to top, the polycondensation water-resisting layer is formed by mixing tailing sand, silica sol and tetraethoxysilane, and when the polycondensation water-resisting layer is in an acid environment, under the catalytic action of H < + >, SiO2 precursors are subjected to dehydration condensation to form network structure gel which is distributed in gaps of tailing sand particles in a wrapping connection mode. The adsorption salt isolation layer is used for adsorbing and isolating salt rising along with capillary water in a soil body on the lower portion of the anti-seepage layer structure, the polycondensation water isolation layer is a key layer for the anti-seepage layer structure to achieve the anti-seepage and water interception effect, and the capillary isolation layer is used for blocking part of a lower seepage water body on the interface of two layers of soil of a soil body on the upper portion of the anti-seepage layer structure. The industrial solid waste tailing sand is utilized, resource utilization of the tailing sand is achieved, the characteristics of adapting to the strong acid environment are achieved, and the application scene is wide.
本发明提供了一种以尾矿砂为基材的耐酸性水平防渗结构及其施工方法。所述防渗结构自下而上包括吸附隔盐层、缩聚隔水层和毛细隔断层，缩聚隔水层是由尾矿砂、硅溶胶、正硅酸乙酯混合组成，当缩聚隔水层处于酸性环境时，在H+催化作用下，SiO2前驱体脱水缩合形成网络结构凝胶，包覆连接分布于尾矿砂颗粒间隙。所述吸附隔盐层是用于吸附阻隔该防渗层结构下部土体中随毛细水上升的盐分，缩聚隔水层是该防渗层结构发挥防渗截水效果的关键层，毛细隔断层是用于将部分下渗水体阻滞在该防渗层结构上部土体两层土交界面之上。本发明利用工业固废尾矿砂，实现了尾矿砂资源化利用，适应强酸性环境的特性，可应用的场景较为广阔。
Acid-resistant horizontal anti-seepage structure with tailing sand as main material and construction method
以尾矿砂为主材的耐酸性水平防渗结构及施工方法
LIU HONGRUI (author) / ZHANG ZHEN (author) / LI MENGYUN (author) / WANG YUE (author) / CHEN HAO (author) / CAO JIANFENG (author) / PU KEFU (author) / MIN MING (author)
2023-12-22
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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