龙游石窟岩面水岩作用研究  

ANALYSIS OF CHEMICAL INTERACTION BETWEEN WATER AND SANDSTONE AT LONGYOU GROTTOES

作　　者：李黎[1] 王思敬[1] 谷本親伯[2] 郑舰 

机构地区：[1]中国科学院地质与地球物理研究所,北京100029 [2]日本大阪大学,日本大阪府吹田市山田丘2-1,565-0871 [3]浙江省龙游县文化旅行局,龙游324400

出　　处：《工程地质学报》2008年第6期798-805,共8页Journal of Engineering Geology

基　　金：国家科技支撑计划“大遗址保护关键技术研究与开发”(2006BAK30B02)

摘　　要：在龙游石窟砂岩胶结物的粘土矿物类型及特性研究的基础上,对窟内的积水、洞室顶部的裂隙渗水、地表水及衢江水等水样进行化学分析,结果表明石窟砂岩的矿物组成及构造,决定了洞室渗水的水质,是造成水质不同的主要原因。对石窟洞室砂岩试样分别浸沉在上述水及蒸馏水中,并定期对浸沉水样进行化学分析,研究了石窟砂岩与水的相互作用机理,结果表明:由大气降水入渗而形成的渗透水对石窟的影响主要是渗透过程中发生的水化、溶脱、氧化等反应,从而导致洞室砂岩的矿物组成及构造产生变化,同时也直接影响了渗透水的水质。因此,粘土矿物与水之间有着相互制约,相互影响的作用,但是岩石中所含粘土矿物特性是使砂岩发生风化的主要原因。This paper is based on types and characteristics of clay minerals forming the argillanceous cement of the sandstone at Longyou Grottoes in Zhejiang Province. The water samples were further collected water seepage in accumulation on the ground separately from （ 1 ） level within the caves, （ 2 ） water seepage infiltrated through cracks on the ceiling of caves, （ 3 ） surface water outside the caves, as well as （ 4 ） the water from Qujiang River near Longyou Grottoes. They were investigated and analysed using chemical analysis methods. The results show that the mineral components and structure sandstone was the main cause of the sandstone depended on the water of different quality of the water seepage. quality. The interaction between water and Sandstone samples from the caves were prepared and then immersed separately in the above water samples and distilled water. Each of the immersion water was sampled and analysed at regular intervals. The mechanism of the chemical interaction between water and sandstone could be found. The chemical interaction results indicate that the main impact of the water seepage infiltrated after atmospheric precipitation on Longyou Grottoes is a series of reactions such as hydration, dissolution and oxidation which take place during the infiltration process. Hence, the mineral components and the structure of the sandstone are changed. The quality of the water seepage is implicated directly in these reactions. Therefore, the clay minerals and the water seepage can interact on each other. Such characteristics of the clay minerals in sandstone with water are the main reason causing weathering of the sandstone.

关 键 词：砂岩 风化 渗水 浸沉试验 分析 

分 类 号：P642[天文地球—工程地质学]