辉绿岩脉发育对某地下水封油库洞室稳定性影响研究
发布时间：2018-07-16 15:15
【摘要】：地下水封油库洞室的稳定是安全施工、油库正常运营的关键前提。在工程建设过程中,洞室开挖遇到围岩被侵入岩脉改造地段,侵入岩脉发育对洞室稳定性影响极为不利,国内外许多地下洞室开挖过程都遇到过岩脉侵入造成洞室发生塌方、突水等地质灾害问题。对侵入岩脉影响洞室稳定性的研究显得十分有意义。本文针对某地下水封油库发育的辉绿岩脉对洞室围岩稳定的影响进行研究。本文依托某500万方地下水封油库建设项目,结合资料调查,对地下洞室开挖揭露辉绿岩脉对工程建设造成不利影响进行研究。本论文取得的研究成果主要包括:(1)辉绿岩脉切割花岗岩体形成裂隙岩体,岩体质量分级为IV级;(2)洞室围岩应力集中和变形位移与围岩质量级别呈线性关系;(3)辉绿岩脉切割花岗岩体形成的关键块体安全系数比较低,洞室可能会发生局部掉块和塌方。
[Abstract]:The stability of underground water seal chamber is the key prerequisite for safe construction and normal operation of oil storage. In the course of engineering construction, the excavation of caverns meets the influence of the development of intrusive veins on the stability of the caverns, and many underground caverns have been excavated in the process of excavation, which has resulted in caving of caverns. Geological hazards such as water inrush. It is of great significance to study the influence of intrusive veins on the stability of caverns. In this paper, the influence of diabase vein developed in a underground water reservoir on the stability of surrounding rock is studied. Based on the construction project of a five million square underground water seal oil depot and data investigation, this paper makes a study on the adverse effect of the excavation of underground cavern on the construction of the diabase vein. The main results of this paper are as follows: (1) diabase veins cut granite bodies to form fissured rock masses. The quality of rock mass is classified as grade IV, (2) the stress concentration and deformation displacement of surrounding rock are linearly related to the mass level of surrounding rock, (3) the safety factor of key block formed by diabase vein cutting granite body is relatively low, and the cavern may occur local mass loss and collapse.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE972.2
本文编号：2126788
[Abstract]:The stability of underground water seal chamber is the key prerequisite for safe construction and normal operation of oil storage. In the course of engineering construction, the excavation of caverns meets the influence of the development of intrusive veins on the stability of the caverns, and many underground caverns have been excavated in the process of excavation, which has resulted in caving of caverns. Geological hazards such as water inrush. It is of great significance to study the influence of intrusive veins on the stability of caverns. In this paper, the influence of diabase vein developed in a underground water reservoir on the stability of surrounding rock is studied. Based on the construction project of a five million square underground water seal oil depot and data investigation, this paper makes a study on the adverse effect of the excavation of underground cavern on the construction of the diabase vein. The main results of this paper are as follows: (1) diabase veins cut granite bodies to form fissured rock masses. The quality of rock mass is classified as grade IV, (2) the stress concentration and deformation displacement of surrounding rock are linearly related to the mass level of surrounding rock, (3) the safety factor of key block formed by diabase vein cutting granite body is relatively low, and the cavern may occur local mass loss and collapse.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE972.2
【参考文献】
相关期刊论文 前1条
1 夏廷高,孙传敏,尹建忠;四川挖角坝地区辉绿岩脉岩石学特征及成因研究[J];地质与勘探;2005年04期
，本文编号：2126788
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