路基工程
路基工程
로기공정
SUBGRADE ENGINEERING
2011年
5期
121-123,126
,共4页
膨胀土%土坝%降雨%稳定性
膨脹土%土壩%降雨%穩定性
팽창토%토패%강우%은정성
expansive soil%soil dam%rainfall%stability
利用南宁膨胀土的物理力学性质,建立均质土坝模型,针对广西地区的气候条件,并根据非饱和膨胀土的强度随含水量变化的规律,利用数值模拟的方法研究在降雨条件下膨胀土坝填筑过程中的稳定性分析以及降雨持时对分层填筑的影响,并得到了膨胀土坝在降雨入渗后,其稳定性受到影响的结论,为土坝填筑施工参数的控制提供依据和注意事项。
利用南寧膨脹土的物理力學性質,建立均質土壩模型,針對廣西地區的氣候條件,併根據非飽和膨脹土的彊度隨含水量變化的規律,利用數值模擬的方法研究在降雨條件下膨脹土壩填築過程中的穩定性分析以及降雨持時對分層填築的影響,併得到瞭膨脹土壩在降雨入滲後,其穩定性受到影響的結論,為土壩填築施工參數的控製提供依據和註意事項。
이용남저팽창토적물리역학성질,건립균질토패모형,침대엄서지구적기후조건,병근거비포화팽창토적강도수함수량변화적규률,이용수치모의적방법연구재강우조건하팽창토패전축과정중적은정성분석이급강우지시대분층전축적영향,병득도료팽창토패재강우입삼후,기은정성수도영향적결론,위토패전축시공삼수적공제제공의거화주의사항。
Homogeneous soil dam model has been established using the physical and mechanical properties of Nanning expansive soil.Against the climatic conditions in Guangxi area and according to the variation of unsaturated expansive soil strength with water content,the stability of expansive soil dam during filling under rainfall condition and the influence of rainfall duration on layered filling are separately analyzed using numerical simulation.The result appears that the stability of expansive soil dam would be affected after rainfall infiltration,which provides basis and precautions for parameters control of dam construction.
