地下水封油库场区膨胀性蚀变岩的工程地质分析  被引量:2

ENGINEERING GEOLOGICAL ANALYSIS OF ALTERED ROCKS WITH EXPANSIBILITY IN UNLINED CAVERNS FOR UNDERGROUND OIL STORAGE

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作  者:袁广祥[1] 吴琦[1] 尚彦军[2] 黄志全[1] 崔江利[1] 

机构地区:[1]华北水利水电学院资源与环境学院,郑州450011 [2]中国科学院地质与地球物理研究所,北京100029

出  处:《工程地质学报》2010年第6期950-955,共6页Journal of Engineering Geology

基  金:国家自然科学基金项目(40972198);华北水利水电学院高层次人才科研启动项目(200919)

摘  要:地下水封油库作为国家的石油战略储备库,对库址区水文地质工程地质条件要求较高。然而,在实际的场区中,总是存在着各种不良地质体,直接影响着库址区的水文地质工程地质条件。本文以锦州地下水封油库为例,对地下水封油库场区膨胀性蚀变岩进行工程地质分析。场区的蚀变岩属中基性岩脉侵入的热液蚀变型,具有弱膨胀性。通过崩解试验,发现该蚀变岩具有一定的崩解性。通过岩矿薄片鉴定和X射线衍射分析,发现黏土矿物为蒙脱石。根据膨胀性蚀变岩的性质,地下油库在膨胀性蚀变岩段施工时应采取相应的治理措施。As petroleum strategic storages,unlined caverns for storage of oil need suitable hydrogeologic and engineering geological conditions.However,there are many bad geological bodies in the storage regions.They directly influence the hydrogeologic and engineering geological conditions in storage regions.In the paper,Jinzhou underground oil storages is considered as an example to analyze the altered rocks with expansibility in underground oil storages.There are many altered rocks in the region,and they belong to hydrothermal alteration by intrusion of basic dykes.The altered rocks have weak expansibility.It is found by disintegration test that the altered rocks can disintegrate.Through identification of minerals and rocks and X-ray diffraction analysis,it is found that clay mineral of the altered rocks is smectite.According to properties of the altered rocks with expansibility,the paper present control measures in the altered rock section during the construction of underground caverns for storage of oil.

关 键 词:地下水封油库 膨胀性蚀变岩 工程地质分析 

分 类 号:P642[天文地球—工程地质学]

 

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