高杂质盐矿已有溶腔大规模储气技术研究进展  

Advances of large-scale gas storage technology in existing salt caverns in high-insoluble salt formations

作　　者：施锡林[1,2] 马洪岭 章雨豪[1,2] SHI Xilin;MA Hongling;ZHANG Yuhao(State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Science, Wuhan, Hubei 430071, China;University of Chinese Academy of Sciences, Beijing 100049, China)

机构地区：[1]中国科学院武汉岩土力学研究所,岩土力学与工程国家重点实验室,湖北武汉430071 [2]中国科学院大学,北京100049

出　　处：《山东科技大学学报（自然科学版）》2020年第4期55-65,共11页Journal of Shandong University of Science and Technology(Natural Science)

基　　金：国家自然科学基金项目(51774266,51874274);中国科学院青年创新促进会项目(2019324)。

摘　　要：加快建设大型地下盐穴储气库是保障我国能源安全的迫切需求,但在现有的盐岩储库建设标准和技术体系下,我国高杂质盐矿水溶开采形成的溶腔难以用于建设大型地下储气库。为摆脱这一困境,在广泛调研我国盐矿地质和水溶采矿特点的基础上,综合采用水溶采矿理论分析和现场声纳探测等研究手段,摸清高杂质盐矿采卤溶腔的三维形态,研究发现盐矿不溶物沉渣堆积散体的空隙率高且连通性良好,具备大规模储气的基本条件。基于这些发现提出了从溶腔底部排出空隙卤水的新思路,进而形成了高杂质盐矿已有溶腔改建大型地下储气库的技术体系。相关理论和技术成果突破了盐矿品位对建库可行性的限制,建库可选范围及建库规模扩大数倍,可为天然气储存及压缩空气储能等能源储备工程提供重要参考。Accelerating the construction of large-scale salt cavern gas storage is an urgent need for fulfilling the demand of China's energy security.However,under the technology system of salt cavern gas storage,the salt caverns formed in solution mining process in high-insoluble salt mines are difficult to be used as gas storages.In order to get rid of this predicament,the geological characteristics of salt mines and the characteristics of solution mining in China are investigated widely.By using the methods of solution mining theoretical analysis and field sonar detection,the three-dimensional shapes of the salt caverns in high-insoluble salt mines are described.It is found that the insoluble sediments have high void ratio.It is also found that the void in the insoluble sediments has good connectivity.Therefore,the high-insoluble salt mines have the basic conditions for building large-scale gas storages.Based on the above findings,a new idea for draining brine from the bottom of a salt cavern is proposed,and then a technology system for rebuilding large-scale gas storage by using existing salt caverns of high-insoluble salt mines is established.The theories and technical achievements break the restriction of salt mine grade on the construction feasibility of gas storage.Furthermore,the achievements can expand the optional scope and the scale of gas storage by several times.More importantly,the achievements provide important references for natural gas storage and compressed air energy storage.

关 键 词：盐矿 水溶采矿 高杂质 溶腔 沉渣空隙 天然气储存 

分 类 号：TN929.5[电子电信—通信与信息系统]