因此，如何有效且准确地得到岩体持水曲线是值得研究的课题。

So how to get the water retention curve of the fractured porous rock accurately and efficiently is worthy of researching.

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并利用土的持水曲线建立常含水量下吸力与土体应力之间的耦合作用关系。

Then, the water-retention curve is employed to consider the coupling of suctions and stresses under constant water condition.

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VG模型虽然可以与持水曲线匹配得很好，但是VG模型和BC模型都对相对渗透率估计过低。

Although VG model can reasonably well match the simulated water retention curves, both VG and BC models underestimate relative permeability.

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