扩建地下水封洞库水封性评价与水幕系统优化  

Evaluation of containment properties and optimization design of water curtain system for an extended underground oil storage cavern

作　　者：彭振华 王者超 李佳佳[2] 乔丽苹 赵秦尼 李涵硕 PENG Zhenhua;WANG Zhechao;LI Jiajia;QIAO Liping;ZHAO Qinni;LI Hanshuo(CNOOC Petrochemical Engineering Company Limited,Qingdao 266101,Shandong,China;Key Laboratory of Ministry of Education for Safe Mining in Deep Metal Mines(Northeastern University),Shenyang 110004,Liaoning,China;College of Resources and Civil Engineering,Northeastern University,Shenyang 110819,Liaoning,China)

机构地区：[1]中海油石化工程有限公司,山东青岛266101 [2]深部金属矿山安全开采教育部重点实验室(东北大学),辽宁沈阳110004 [3]东北大学资源与土木工程学院,辽宁沈阳110819

出　　处：《山东大学学报(工学版)》2025年第2期125-133,142,共10页Journal of Shandong University(Engineering Science)

基　　金：国家自然科学基金资助项目(42177157)。

摘　　要：扩建地下水封油库可能对已建相邻洞库产生相互影响。针对国内首个大型地下水封洞库扩建工程,开展地下水封洞库水封效率评价与扩建-已建工程水封性相互影响分析,依据地下水位、水封效率对该扩建工程水幕系统进行优化。研究结果表明:扩建洞库工程的开挖破坏了地下初始稳定渗流场,会导致已建洞库水位小幅下降,涌水量上升,但已建洞库水封性仍满足要求,研究结果说明扩建工程施工对已建工程运行的水封性影响有限;相比于独立选址建库,在已建洞库旁进行扩建,扩建洞库地下水位和涌水量均发生下降,但降幅不多,满足水封要求。综上所述,在已建工程旁进行扩建是可行的;在满足地下水位的要求下,可适当降低水幕孔压力、增大水幕孔间距来进行扩建地下水封洞库的水幕系统优化。The expansion of underground water-sealed oil depot may have mutual influenced on the built adjacent caves.In view of the first large-scale groundwater sealing reservoir expansion project in China,this research carried out the analysis of the watersealed efficiency of the expansion and the analysis of the mutual influence between the expansion project and the water sealing performance of the existing project.The water curtain system of the expansion project was optimized according to the groundwater level and water sealing efficiency.The results showed that the excavation of the expansion cave project had disrupted the initial stable seepage field underground,leading to a slight decrease in the water level of the existing cavern and an increase in water inflow,but the water-sealed of the built cavern still meeting the requirements.The research results indicated that the construction of expansion projects had limited impact on the water tightness of existing projects;Compared to building a separate site for the construction of a reservoir,expanding next to an existing cavern resulted in a decrease in groundwater level and water inflow,but the decrease was not significant and met the water seal requirements.In conclusion,it was feasible to expand next to existing projects.In accordance with the requirements of the groundwater level,the optimization of the water curtain system for expanding the underground water sealed cavern could be carried out by appropriately reducing the pressure of the water curtain holes and increasing the spacing between the water curtain holes.

关 键 词：扩建地下水封洞库 水封性 水封效率 水幕系统优化 

分 类 号：TE822[石油与天然气工程—油气储运工程]