本文選題：巖石力學　切入點：地下水封石油洞庫　出處：《巖石力學與工程學報》2016年07期

【摘要】：采用加拿大ESG微震監(jiān)測系統(tǒng)對錦州某大型地下水封石油洞庫局部開挖過程進行實時監(jiān)測和分析,圈定監(jiān)測范圍內(nèi)圍巖潛在危險區(qū)域,再現(xiàn)開挖過程中洞庫失穩(wěn)區(qū)域的巖體微破裂萌生、發(fā)展和集聚。結果表明:(1)采用人工定點敲擊試驗對監(jiān)測系統(tǒng)定位性能進行測試,確定研究區(qū)域巖體整體等效P波波速為5 200 m/s,傳感器陣列范圍內(nèi)的震源定位誤差小于8 m;(2)監(jiān)測區(qū)域巖體微破裂呈2個條帶狀聚集,一條位于水幕巷道6東側,水幕巷道1和2范圍,與水平面呈緩傾角。另一條位于儲油洞室1北與1南范圍2+40~2+60里程區(qū)域內(nèi),與該區(qū)域輝綠巖脈分布范圍一致,說明微震監(jiān)測系統(tǒng)可以查明判別巖脈等軟弱結構面情況。這是由于大斷面的儲油洞室的強開挖卸荷,高能量的釋放導致巖脈的"過度"損傷,從而誘發(fā)大量的微破裂。研究結果證明微震監(jiān)測技術在地下水封石油洞庫這種特殊巖體結構中應用的可行性,為后期大規(guī)模微震監(jiān)測系統(tǒng)的構建與實施提供參考依據(jù)。
[Abstract]:The local excavation process of a large underground water seal oil reservoir in Jinzhou is monitored and analyzed in real time by using Canada ESG microseismic monitoring system to delineate the potential dangerous area of surrounding rock in the monitoring range.It reappears the initiation, development and accumulation of rock mass microfracture in the unstable region of cavern during excavation.The results show that the performance of the monitoring system is tested by manual fixed point percussion test.It is determined that the whole equivalent P wave velocity of the studied rock mass is 5 200 m / s, and the focal location error in the sensor array is less than 8 m / m ~ (2)) the microfracture of the rock mass in the monitoring area is clustered in two bands, one is located on the east side of the water curtain tunnel,The range of water curtain roadway 1 and 2 shows a gentle dip angle with horizontal plane.The other is located in the mileage range of 240 ~ 2 60 miles in the north and south of oil storage chamber 1, which is consistent with the distribution range of diabase veins in this area, which indicates that the microseismic monitoring system can be used to identify the weak structural planes such as the veins.This is due to the strong excavation and unloading of oil storage caverns with large sections, and the release of high energy, which leads to "excessive" damage to the veins and thus induces a large number of micro-fractures.The results show that the application of microseismic monitoring technology to the underground water seal oil reservoir is feasible, which provides a reference for the construction and implementation of the large-scale microseismic monitoring system in the later stage.
【作者單位】： 中國科學院力學研究所;大連力軟科技有限公司;大連理工大學巖石破裂與失穩(wěn)研究中心;廊坊中油朗威工程項目管理有限公司;四川大學水利水電學院;
【基金】：國家自然科學基金資助項目(51504233) 國家重點基礎研究發(fā)展計劃(973)項目(2014CB047100) 中國博士后科學基金資助項目(2015M 571137)~~
【分類號】：TE822

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本文編號：1701914