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水工建设的发展,对基础岩体的强度和透水性的要求也日益提高。传统的工程措施不能解决弱透水性(ω<0.1升/分)沉积岩的防渗问题。为解决这一课题,莫斯科大学地质系研制了一种新型化学浆液,并取得了引人注目的效果。新型化学浆液的地球化学和物理化学原理自然界广泛存在着一种控制“上部生成带”沉积物后成胶结作用的化学过程,那就是二氧化硅和铝的对偶迁移。有机质成分对这种对偶迁移和沉淀的特征影响很大:氢氧化铝通常在 pH 值为6.5～8.5的条件下聚合作用很快,有机质的主要作用是使之减慢。此外,加入铝—
The development of hydraulic construction, the strength and permeability of the basic rock mass requirements are also increasing. The traditional engineering measures can not solve the seepage problem of sediments with weak water permeability (ω <0.1L / min). In order to solve this problem, a new type of chemical slurry has been developed by the Department of Geology of Moscow State University and achieved remarkable results. Geochemistry and physico-chemical principles of new chemical slurries There is a widespread chemical process in the world that controls the cementation of the “upper zone” deposits, which is the dual migration of silica and aluminum. The composition of the organic matter has a strong influence on this dual migration and precipitation characteristics: aluminum hydroxide polymerizes very quickly at pH 6.5 to 8.5, and the main role of organic matter is to slow it down. In addition, aluminum-