对南阳膨胀土在反复干湿循环作用下的裂隙演化规律进行了室内试验。
Laboratory test is conducted to study the evolution law of the fissures of Nanyang expansive clay under wetting and drying cycles.
研究表明：试前含水量和裂隙发育状况对膨胀土在静水中的崩解有着重要影响；
The researches showed that pretest water content in soil specimen and growth condition of crack had an important effect on disintegration of expansive soil.
分析中考虑了非膨胀土和膨胀土边坡中不存在裂隙以及存在裂隙的情况，并对计算结果进行了对比分析。
In the analysis, the effect of rainfall and existence of fissures was simulated, and the calculated results with and without consideration of existence of fissures in the slope were also compared.
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