含高盐份泥岩夹层的盐岩蠕变特性研究  

Study on Creep Property of Rock Salt with Mudstone Interlayer

作　　者：郤保平[1] 赵阳升[1] 赵延林[1] 徐素国[1] 

机构地区：[1]太原理工大学采矿工艺研究所,太原030024

出　　处：《地下空间与工程学报》2007年第1期23-26,共4页Chinese Journal of Underground Space and Engineering

基　　金：国家自然科学基金资助项目(50304011);山西省自然科学基金资助项目(20041020)

摘　　要：含高盐份泥岩夹层的盐岩蠕变特性是油气储库稳定性的关键问题所在。通过对湖北应城含高盐份泥岩夹层的盐岩160天的单轴压缩蠕变实验研究,可知湖北应城含高盐份泥岩夹层的盐岩具有良好的蠕变特性,且纯盐岩蠕变应变高于泥岩夹层,横向应变大于泥岩夹层。根据试验结果,分析了含高盐份泥岩夹层的盐岩的蠕变曲线特征,建立了含高盐份泥岩夹层的盐岩的蠕变理论模型,获得了含高盐份泥岩夹层的盐岩的粘弹塑性本构方程,并拟合了参数,为我国含高盐份泥岩夹层的盐岩矿床油气储库的稳定性分析提供了依据。The creep property of rock salt with mudstone interlayer is key to the stability analysis of oil and gas storage caverns in rock salt. According to the uniaxial compressive creep experiments of Hubei Yingcheng rock salt with mudstone interlayer for 160 days, it can be seen that the rock has a favorable creep property. The creep of rock salt is bigger than that of mudstone interlayer, and its transverse creep is also bigger than that of mudstone interlayer. Based on the experimental result, the elastic and visco - elasto - plastic model and the constitutive equation of rock salt with mudstone interlayer have been set up by analyzing the features of the curve, which provide the foundation to the stability analysis of the oil and gas storage caverns in rock salt in China.

关 键 词：油气储库 高盐份泥岩夹层 蠕变 理论模型 本构方程 

分 类 号：TU45[建筑科学—岩土工程]