【摘要】：地下水封油庫洞室的穩(wěn)定是安全施工、油庫正常運營的關鍵前提。在工程建設過程中,洞室開挖遇到圍巖被侵入巖脈改造地段,侵入巖脈發(fā)育對洞室穩(wěn)定性影響極為不利,國內(nèi)外許多地下洞室開挖過程都遇到過巖脈侵入造成洞室發(fā)生塌方、突水等地質災害問題。對侵入巖脈影響洞室穩(wěn)定性的研究顯得十分有意義。本文針對某地下水封油庫發(fā)育的輝綠巖脈對洞室圍巖穩(wěn)定的影響進行研究。本文依托某500萬方地下水封油庫建設項目,結合資料調(diào)查,對地下洞室開挖揭露輝綠巖脈對工程建設造成不利影響進行研究。本論文取得的研究成果主要包括:(1)輝綠巖脈切割花崗巖體形成裂隙巖體,巖體質量分級為IV級;(2)洞室圍巖應力集中和變形位移與圍巖質量級別呈線性關系;(3)輝綠巖脈切割花崗巖體形成的關鍵塊體安全系數(shù)比較低,洞室可能會發(fā)生局部掉塊和塌方。
[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.
【學位授予單位】：中國地質大學(北京)
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE972.2

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相關期刊論文 前1條

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本文編號：2126788