For the in-situ gas-injection mining technology of oil shale by process,a numerical simulation method with flow-thermo-solid coupling is proposed in this paper.This method adopts separate simulations and step-by-step ...For the in-situ gas-injection mining technology of oil shale by process,a numerical simulation method with flow-thermo-solid coupling is proposed in this paper.This method adopts separate simulations and step-by-step coupling simulation ideas combined with the advantages of the finite element method and the finite volume method.The numerical simulation of flow-thermo-solid coupling is decomposed into two parts:flow-solid coupling and thermo-solid coupling.Considering the Fuyu oil shale in-situ production test area in Songliao Basin as an example,it is concluded that the oil shale has undergone four heating stages:a rapid temperature rise,a steady temperature rise,a slow temperature rise,and heat preservation.It takes about 10 years for the stress-strain state of the oil shale layer to reach a steady-state through the thermo-solid coupling.The main strain zones of the oil shale layer are distributed near the fracturing fractures connected to the gas injection well and at the edge of the fracturing fractures.The areas with the plastic deformation in the oil shale layer predominantly appear near the gas injection wells,production wells,and fracturing channels.The areas with the largest fracture strength are mostly distributed near the edge of the fracturing fractures with low flow velocity and low temperature.展开更多
人才是中医药发展的第一资源。中医药事业的发展离不开完善、科学的人才评价机制。文章基于中国知网(China National Knowledge Network,CNKI)中文学术期刊全文数据库及相关政策文件开展分析,随着国家人才战略的实施,人才评价机制改革...人才是中医药发展的第一资源。中医药事业的发展离不开完善、科学的人才评价机制。文章基于中国知网(China National Knowledge Network,CNKI)中文学术期刊全文数据库及相关政策文件开展分析,随着国家人才战略的实施,人才评价机制改革逐步推进,中医药人才评价相关政策也日益丰富发展,自主权逐步下放用人单位,人才评价标准和指标研究逐渐深入细化。加强中医药人才的分类分层评价,制定体现中医药特色的人才评价指标是推动中医药人才战略实施的重要举措。展开更多
基金Supported by Project of Science and Technology Department of Jilin Province(No.20170201001SF)。
文摘For the in-situ gas-injection mining technology of oil shale by process,a numerical simulation method with flow-thermo-solid coupling is proposed in this paper.This method adopts separate simulations and step-by-step coupling simulation ideas combined with the advantages of the finite element method and the finite volume method.The numerical simulation of flow-thermo-solid coupling is decomposed into two parts:flow-solid coupling and thermo-solid coupling.Considering the Fuyu oil shale in-situ production test area in Songliao Basin as an example,it is concluded that the oil shale has undergone four heating stages:a rapid temperature rise,a steady temperature rise,a slow temperature rise,and heat preservation.It takes about 10 years for the stress-strain state of the oil shale layer to reach a steady-state through the thermo-solid coupling.The main strain zones of the oil shale layer are distributed near the fracturing fractures connected to the gas injection well and at the edge of the fracturing fractures.The areas with the plastic deformation in the oil shale layer predominantly appear near the gas injection wells,production wells,and fracturing channels.The areas with the largest fracture strength are mostly distributed near the edge of the fracturing fractures with low flow velocity and low temperature.
文摘人才是中医药发展的第一资源。中医药事业的发展离不开完善、科学的人才评价机制。文章基于中国知网(China National Knowledge Network,CNKI)中文学术期刊全文数据库及相关政策文件开展分析,随着国家人才战略的实施,人才评价机制改革逐步推进,中医药人才评价相关政策也日益丰富发展,自主权逐步下放用人单位,人才评价标准和指标研究逐渐深入细化。加强中医药人才的分类分层评价,制定体现中医药特色的人才评价指标是推动中医药人才战略实施的重要举措。
