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采用描述江湖洪水运动的数学模型， 对长江中游１９９８ 年洪水进行实况复演和还原计算， 定量分析三口分流变化、洞庭湖湖容扩大、分蓄洪运用对荆江河段、洞庭湖区以及城陵矶至汉口河段水情的相对影响， 结合定性的物理解释， 深入探讨了１９９８ 洪水高洪水位的形成原因及其与江湖水情的相互作用规律， 并对退田还湖和三峡水库的防洪作用进行了论证。
Based on the mathematical model describing the floods in rivers and lakes, the flood in 1998 was reconstructed and restored by the actual situation. The three-point diversion was quantitatively analyzed, and the capacity of Dongting Lake expanded. The flood diversion was applied to Jingjiang reach, Dongting Lake and Chenglingji With the relative influence of water regime in the Hankou reach and the qualitative physical interpretation, the causes of the high flood level in 1998 and its interaction with the rivers and lakes are discussed in depth. The flood control effects of returning the farmland to the lake and the Three Gorges Reservoir The argument.