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中文摘要：
在核废料地下处置、能源地下储存和深埋地下工程中,低渗透率岩石的渗透性测试是难点问题。通过研制的低渗透率岩石渗透仪,在氮气形成稳态渗流的条件下,对锦屏大理岩进行渗透特性研究。比较气体渗流偏微分方程中考虑气体Klinkenberg效应的渗透率精确解和通过拟压力法得到的渗透率解,表明渗流偏微分方程中考虑气体Klinkenberg效应的计算方法在理论上和试验数据处理结果上更为优越。研究结果表明：（1）低渗透率岩石渗透仪稳定、误差小,可以进行致密岩石的低渗透率测定;（2）Klinkenberg效应对低渗透率岩石的气体渗透影响显著,考虑Klinkenberg效应的数值模拟方法可以很好地模拟气体渗透;（3）锦屏大理岩的渗透率为10^-20 m^2左右。
英文摘要：
It is a hot issue to study the transport properties of rocks with low permeability（≤10^-16 m^2） in geological disposal of radioactive waste,underground gas and oil storage tanks and construction of deep cavern groups.Based on the developed low permeability test equipment,gas transport properties of typical Jinping marbles are studied under steady flow of nitrogen.Also numerical simulation of gas flow through marble is performed.Comparisons are made between pseudo pressure method and an exact method by considering Klinkenberg effect in gas transportation equation.Fitting results using the exact method show better agreement with laboratory testing results and the transport parameters gained are more convincible.Numerical study and test results both show that：（1） low permeability test equipment can be used to study transport properties of dense rocks under different temperatures and stress conditions;（2） it is necessary to consider Klinkenberg effect in the study of gas transport properties in dense rocks,and the results from numerical study considering Klinkenberg effects agree very well with laboratory test results;and（3） intrinsic permeability of Jinping marble is about 10^-20 m^2.
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