摘要
传统、新型岩土工程问题诸如压缩空气含水层储能、充气截排水技术、二氧化碳地质封存、油气地下储备工程等均涉及气水两相流与应力耦合.针对这一工程实际,根据非饱和土气水两相渗流-应力弱耦合理论,开发了基于TOUGH2与FLAC3D的气水两相渗流-应力耦合计算搭接程序.该计算程序能够较为真实地模拟气水两相渗流问题,能够探讨流动过程中气水的相互作用及其对过程的影响.程序考虑了气水两相渗流与土体骨架变形直接的相互作用,反映了这一过程中孔隙度、渗透率、毛管压力和土体物理力学参数的变化,实现了更为完善的气水两相渗流与应力弱耦合分析.通过与经典的排水试验和模型试验对比,验证了该程序可以较为准确地模拟气水两相流-应力之间的相互作用.
Traditional and new geotechnical engineering problems such as compressed air energy storage,intercepting water with compressed air,carbon dioxide sequestration and oil and gas underground reserve project are all involving air-water two-phase flow and stress coupling problems.For this engineering reality,based on the weak coupling theory of gas-water two-phase seepage and stress in unsaturated soil,a air-water two-phase percolation-stress coupling calculation program based on coupled TOUGH2 and FLAC3D was developed.The calculation program can simulate real air-water two phase flow,and can investigate the gas-water interaction of seepage process.The calculation program considers the direct interaction between gas-water two-phase seepage and soil skeleton deformation,reflects the process of porosity,permeability,capillary pressure and the change of soil physical and mechanical parameters,and achieve a more perfect gas-water two-phase seepage-stress coupling analysis.Furthermore,by comparing with classical drainage test and model test,it is verified that the program can accurately simulate the gas-water two-phase flow-stress interaction.
作者
刘夏临
张晟斌
陈佺
舒恒
刘尚各
LIU Xia-lin;ZHANG Sheng-bin;CHEN Quan;SHU Heng;LIU Shang-ge(CCCC Second Highway Consultants Limited Company,Wuhan 430056,China;Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071,China;China GEZHOUBA Group International Engineering Co.Ltd,Beijing 100025)
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2022年第8期1485-1494,共10页
Journal of Zhejiang University：Engineering Science
基金
新疆维吾尔自治区重大科技专项(2020A03003,2020A03003-1)
中交集团重点专项(2020-ZJKJ-ZDZX01)
中国博士后科学基金课题(2022M712978)。
