某地下水封石油洞库海水入侵评价与控制方法研究  

Evaluation and control method of seawater intrusion in an underground water-sealing oil storage cavern

作　　者：乔丽苹 王小倩 王者超 崔少东[3] 郭家繁 钟威[3] QIAO Li-ping;WANG Xiao-qian;WANG Zhe-chao;CUI Shao-dong;GUO Jia-fan;ZHONG Wei(School of Resources&Civil Engineering,Northeastern University,Shenyang 110819,China;Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines,Northeastern University,Shenyang 110004,China;China Petroleum Pipeline Engineering Corporation,Langfang 065000,China)

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110819 [2]东北大学深部金属矿山安全开采教育部重点实验室,辽宁沈阳110004 [3]中国石油天然气管道工程有限公司,河北廊坊065000

出　　处：《岩土工程学报》2021年第7期1338-1344,共7页Chinese Journal of Geotechnical Engineering

基　　金：辽宁省“兴辽英才计划”项目(XLYC1807029);辽宁省自然科学基金项目(2019-YQ-02,2019-MS-114);中央基本科研业务专项基金项目(N2001026,N180104022,N2101005)。

摘　　要：为防止海水入侵引起Cl-浓度升高,影响地下水封石油洞库的使用寿命,以某地下水封石油洞库建设工程为依托,开展了海水入侵评价与控制方法研究。采用有限元数值模拟方法分别获得了在无水幕系统、水平水幕系统、水平和竖直双水幕系统条件下地下水封石油洞库的地下水渗流场和溶质运移特征。研究表明:通过设置竖直水幕系统,增强洞室周围淡水流向海水的对流作用,达到阻止海水入侵洞室的目的;只设置水平水幕系统无法完全抑制海水入侵,必须增设竖直水幕系统后才达到完全抑制海水入侵的效果;在达到抑制海水入侵效果的前提下,库区水位可以满足洞室水封性的要求,但涌水量有所增大。研究结果可为滨海地区地下水封石油洞库水幕系统抑制海水入侵防治措施选择提供一定理论依据。In order to prevent the increase of Cl- concentration caused by seawater intrusion to affect the service life of underground water-sealing oil storage caverns, the evaluation and control methods of seawater intrusion are studied based on the construction of an underground oil storage cavern. The seepage field and solute transport characteristics of the underground storage cavern under the conditions without water curtain system, horizontal water curtain system, horizontal and vertical water curtain system are obtained by using the finite element numerical simulation method. The results show that the vertical water curtain system can enhance the convection of fresh water to flow to seawater around the cavern so as to prevent the seawater from invading the cavern. Only the horizontal water curtain system can not prevent the seawater intrusion, but the vertical water curtain system must be set up to completely restrain the seawater intrusion. On the premise of restraining seawater intrusion, the reservoir water level can meet the requirements of water sealing, but the inflow of water increases. The research results may provide a theoretical basis for the selection of prevention measures for preventing seawater intrusion by the water curtain system of underground water-sealing oil storage caverns in coastal areas.

关 键 词：地下水封石油洞库 水幕系统 海水入侵 水封性 涌水量 

分 类 号：TU43[建筑科学—岩土工程]