CAJ | 학술논문

盐岩地下储气库腔体以钻井水溶方式开采，溶腔形态可见性差、形态发展可控性难度高，针对畸形溶腔进行科学的稳定性评价是保证其安全运营的重要手段。将变权和相对差异函数理论引入到盐岩溶腔的安全评价中，建立适用于盐穴储气库畸形单腔的稳定性评价模型，首次以溶腔声纳测腔数据为基础，建立三维真实仿真模型并进行数值模拟，将数值模拟结果作为评价指标的评分依据，最后应用该方法对金坛储气库某腔体进行稳定性评价，并针对评价结果提出安全改善措施。研究结果表明，用变权方法对评价指标权重进行处理后得到的结果更加合理，通过将该方法与其他安全评价方法计算结果进行对比，证明了该模型在盐岩储气库畸形溶腔的稳定性评价中具有较好的适用性。
염암지하저기고강체이찬정수용방식개채，용강형태가견성차、형태발전가공성난도고，침대기형용강진행과학적은정성평개시보증기안전운영적중요수단。장변권화상대차이함수이론인입도염암용강적안전평개중，건립괄용우염혈저기고기형단강적은정성평개모형，수차이용강성납측강수거위기출，건립삼유진실방진모형병진행수치모의，장수치모의결과작위평개지표적평분의거，최후응용해방법대금단저기고모강체진행은정성평개，병침대평개결과제출안전개선조시。연구결과표명，용변권방법대평개지표권중진행처리후득도적결과경가합리，통과장해방법여기타안전평개방법계산결과진행대비，증명료해모형재염암저기고기형용강적은정성평개중구유교호적괄용성。
The underground gas storage in salt caverns, mined by drilling and water dissolving solution, has low visibility and high difficulty of cavern form controllability, so it is a very significant measure to carry out scientific stability evaluation on deformed gas storage for ensuring its safe operation. In this study, the variable weight theory and relative difference function are introduced to build the assessment model which can be suitable for salt cavern stability assessment. Based on the sonar data of salt cavern shape, the 3D model is built up firstly in numerical simulation calculation, and the simulation results are used as the marking standard of relational assessment index. This model is applied to the stability assessment process of some salt cavern in Jintan;and improving measures for safety are carried out on the basis of assessment results. By a comparison of these results with some others, it is shown that the stability assessment model is more reasonable, as the evaluation index weight has been recalculated by variable weight theory;and this method has relatively better applicability in cavern stability assessment of gas storage in salt cavern.