土坝不同顶升方案的安全性评价

IF 5.9 2区 工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY
Doaa A. EL-Molla , Murat Kilit
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引用次数: 0

摘要

本文对土坝的防渗安全性和边坡稳定性进行了评价。分区土坝被认为没有排水渠,然后有水平排水渠。通过两种情景对大坝抬高法的效果进行了评价。方案1建议提高大坝整体,方案2建议仅提高下游部分,使用挡土墙和下游回填。对这两种情况的评估分别是将原坝高度提高10%、20%和30%。对于场景1,评估了抬高岩心的不同水力导度。对于场景2,研究了不同的下游回填材料和边坡。结果表明:高坝增加了渗流流量,降低了下游边坡的稳定性,尤其是采用高渗材料提高岩心或采用低渗材料进行下游回填时;下游排水的重要性也得到了强调。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Safety assessment for different crest raising scenarios of earth dams
This study evaluates the effect of raising earth dams on their safety against seepage and slope stability. A zoned earth dam is considered without a drain, then with a horizontal drain. The effect of the dam raising method is evaluated through two scenarios. Scenario 1 proposes raising the dam’s whole body, while scenario 2 suggests raising the downstream part only, using a retaining wall and downstream backfill. The two scenarios are assessed by raising 10%, 20%, and 30% of the original dam’s height. For scenario 1, different hydraulic conductivities for the raised core were evaluated. For scenario 2, different downstream backfilling materials and slopes were investigated. The results show that dam raising increases the seepage discharge and reduces the downstream slope stability, especially if a high-permeability material is used to raise the core or a low-permeability material is used for the downstream backfill. The importance of the downstream drain is also highlighted.
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来源期刊
Ain Shams Engineering Journal
Ain Shams Engineering Journal Engineering-General Engineering
CiteScore
10.80
自引率
13.30%
发文量
441
审稿时长
49 weeks
期刊介绍: in Shams Engineering Journal is an international journal devoted to publication of peer reviewed original high-quality research papers and review papers in both traditional topics and those of emerging science and technology. Areas of both theoretical and fundamental interest as well as those concerning industrial applications, emerging instrumental techniques and those which have some practical application to an aspect of human endeavor, such as the preservation of the environment, health, waste disposal are welcome. The overall focus is on original and rigorous scientific research results which have generic significance. Ain Shams Engineering Journal focuses upon aspects of mechanical engineering, electrical engineering, civil engineering, chemical engineering, petroleum engineering, environmental engineering, architectural and urban planning engineering. Papers in which knowledge from other disciplines is integrated with engineering are especially welcome like nanotechnology, material sciences, and computational methods as well as applied basic sciences: engineering mathematics, physics and chemistry.
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