人民长江
人民長江
인민장강
YANGTZE RIVER
2015年
3期
21-23
,共3页
郑绍羽%邹勇%李亚东%张治军
鄭紹羽%鄒勇%李亞東%張治軍
정소우%추용%리아동%장치군
高填方渠道%沉降变形%敏感性分析%填筑施工
高填方渠道%沉降變形%敏感性分析%填築施工
고전방거도%침강변형%민감성분석%전축시공
high-filling canal%settlement deformation%sensitivity analysis%filling construction
渠堤的沉降变形是高填方渠道的致命灾害之一，易导致堤身开裂进而产生渗漏。基于摩尔库伦准则，利用FLAC3D构建了渠堤模型，模拟分析了填筑高度、土体抗剪强度、容重及压缩模量变化对渠堤最大沉降量的影响。分析结果表明，降低填料容重和增大土体压缩模量可有效减小沉降。实际工程中，应综合考虑整个工程的经济效益来选择适当的施工填筑参数。
渠隄的沉降變形是高填方渠道的緻命災害之一，易導緻隄身開裂進而產生滲漏。基于摩爾庫倫準則，利用FLAC3D構建瞭渠隄模型，模擬分析瞭填築高度、土體抗剪彊度、容重及壓縮模量變化對渠隄最大沉降量的影響。分析結果錶明，降低填料容重和增大土體壓縮模量可有效減小沉降。實際工程中，應綜閤攷慮整箇工程的經濟效益來選擇適噹的施工填築參數。
거제적침강변형시고전방거도적치명재해지일，역도치제신개렬진이산생삼루。기우마이고륜준칙，이용FLAC3D구건료거제모형，모의분석료전축고도、토체항전강도、용중급압축모량변화대거제최대침강량적영향。분석결과표명，강저전료용중화증대토체압축모량가유효감소침강。실제공정중，응종합고필정개공정적경제효익래선택괄당적시공전축삼수。
The settlement deformation is one of the worst fatal disasters of high-filled canal, which can lead to dam body cracking, and then caused leakage. On the basis of Mohr-Coulomb criterion, a canal bank model was established by FLAC3D, which can be used to calculate the influence of filling height, soil shear strength, bulk density and elastic modulus on the maxi-mum settlement quantity. The analysis results indicate that reducing the bulk density of packing materials and increasing the soil elastic modulus can effectively decrease the settlement. After the comprehensive consideration of economic benefits of the whole project, the appropriate filling construction parameters can be selected.
