Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method of reinforcing and protecting loess slope surface based on microorganism mineralization
The invention discloses a method of reinforcing and protecting a loess slope surface based on microorganism mineralization. Based on a principle that microorganisms induce a calcium carbonate precipitate, a urease-producing bacterium solution and a cementing fluid are sprayed to the loess slope surface, and urea is hydrolyzed by means of urease secreted by urease bacteria to generate carbonate ions and hydroxyl ions. Thus, in an alkaline environment, the carbonate ions are combined with calcium ions provided by calcium chloride to generate a calcium carbonate precipitate. The precipitate is mostly in a crystal state by taking the urease bacteria as a core. As the urease bacteria are attached to the surfaces of loess particles, calcium carbonate crystals and the loess particles are cementedtogether to cure loess to form a firm soil mass with certain strength and erosion resistance. By curing a soil layer of certain thickness on the surface of the loess slope surface, the shear strengthof the loess slope surface soil mass is improved, rainfall infiltration is reduced, erosion of the slope surface is prevented, the stability of a loess slope is improved, and a role of reinforcing and protecting the slope surface is played. The method is simple to construct, good in durability, environment-friendly and energy-saving and suitable for being popularized and applied.
本发明公开了一种基于微生物矿化对黄土坡面进行加固防护的方法，基于微生物诱导碳酸钙沉淀的原理，在黄土边坡坡面喷淋脲酶菌溶液和胶结液，通过脲酶菌分泌的脲酶水解尿素，产生碳酸根离子和氢氧根离子，这样在碱性环境下，碳酸根离子会与氯化钙提供的钙离子结合，生成碳酸钙沉淀，这种沉淀多以脲酶菌为核心呈晶体状态，由于脲酶菌附着在黄土颗粒的表面，碳酸钙晶体就会将黄土颗粒胶结在一起，将黄土固化成具有一定的强度和抗冲蚀性能的坚固土体。在黄土边坡表面固化一定厚度的土层，提高黄土坡面土体的抗剪强度，减少降雨入渗，防止坡面侵蚀，增加黄土边坡的稳定性，发挥坡面加固防护的作用。本发明施工简便，耐久性好，环保节能，适合推广应用。
Method of reinforcing and protecting loess slope surface based on microorganism mineralization
The invention discloses a method of reinforcing and protecting a loess slope surface based on microorganism mineralization. Based on a principle that microorganisms induce a calcium carbonate precipitate, a urease-producing bacterium solution and a cementing fluid are sprayed to the loess slope surface, and urea is hydrolyzed by means of urease secreted by urease bacteria to generate carbonate ions and hydroxyl ions. Thus, in an alkaline environment, the carbonate ions are combined with calcium ions provided by calcium chloride to generate a calcium carbonate precipitate. The precipitate is mostly in a crystal state by taking the urease bacteria as a core. As the urease bacteria are attached to the surfaces of loess particles, calcium carbonate crystals and the loess particles are cementedtogether to cure loess to form a firm soil mass with certain strength and erosion resistance. By curing a soil layer of certain thickness on the surface of the loess slope surface, the shear strengthof the loess slope surface soil mass is improved, rainfall infiltration is reduced, erosion of the slope surface is prevented, the stability of a loess slope is improved, and a role of reinforcing and protecting the slope surface is played. The method is simple to construct, good in durability, environment-friendly and energy-saving and suitable for being popularized and applied.
本发明公开了一种基于微生物矿化对黄土坡面进行加固防护的方法，基于微生物诱导碳酸钙沉淀的原理，在黄土边坡坡面喷淋脲酶菌溶液和胶结液，通过脲酶菌分泌的脲酶水解尿素，产生碳酸根离子和氢氧根离子，这样在碱性环境下，碳酸根离子会与氯化钙提供的钙离子结合，生成碳酸钙沉淀，这种沉淀多以脲酶菌为核心呈晶体状态，由于脲酶菌附着在黄土颗粒的表面，碳酸钙晶体就会将黄土颗粒胶结在一起，将黄土固化成具有一定的强度和抗冲蚀性能的坚固土体。在黄土边坡表面固化一定厚度的土层，提高黄土坡面土体的抗剪强度，减少降雨入渗，防止坡面侵蚀，增加黄土边坡的稳定性，发挥坡面加固防护的作用。本发明施工简便，耐久性好，环保节能，适合推广应用。
Method of reinforcing and protecting loess slope surface based on microorganism mineralization
一种基于微生物矿化对黄土坡面进行加固防护的方法
TIAN KANLIANG (Autor:in) / ZHANG HUILI (Autor:in) / WANG HUAIXING (Autor:in) / YANG AOQIU (Autor:in) / WANG XIAODONG (Autor:in) / MA BEIQING (Autor:in)
09.06.2020
Patent
Elektronische Ressource
Chinesisch
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