In the process of construction and operation of underground water-sealed oil storage cavern,the water inflow of the caverns is an important factor affecting the safety and operation cost of the cavern.At present,it is dif-ficult to reduce the permeability of surrounding rock to the design requirements by using the traditional grouting method of underground water-sealed oil storage cavern,so the water inflow of the caverns cannot be well controlled.Microbial-induced calcium carbonate precipitation(MICP)technology has the advantages of low grouting viscosity,strong environmental adaptability,and stable formation of mineralized substances,which has attracted extensive in-terest and research in academia and engineering.This paper first analyses the problems existing in water inflow con-trol of underground water-sealed oil storage cavern.Then,the mechanism,influencing factors and the effect of MICP technology on fracture seepage control are expounded.Finally,the key issues of the application of MICP in underground water-sealed oil storage are discussed.The analysis shows that MICP,as an assisted grouting method for seepage control of underground water-sealed oil storage,can accurately control the change of surrounding rock permeability and achieve the purpose of effective control the water inflow.
关键词
地下水封油库/微生物诱导碳酸钙沉淀(MICP)/岩体裂隙注浆/洞室涌水量
Key words
Underground water-sealed oil storage cavern/Microbial-induced calcium carbonate precipitation(MICP)/Fracture grouting in rock mass/The water inflow of the caverns
维普
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