胡炜,陈健玲,李为华,苏静伊,蒋中明

• 1:长沙理工大学水利工程学院
• 2:水沙科学与水灾害防治湖南省重点实验室
• 3:湖南水利水电职业技术学院建筑工程系

摘要(Abstract)：

为研究生态护坡对边坡工程的影响,结合湖南省情况,针对由Tap型和Plate型根系构成的生态护坡,对其在水位骤降和降雨作用下的渗流场和边坡稳定性进行了研究,结果表明:边坡顶部和上部孔隙水压力在降雨初期会不断升高,当达到峰值后孔压会有所降低,其增幅约在4 d时达到稳定状态;边坡中部和下部孔隙水压力主要受水位骤降影响,随水位降低而持续减小;水位骤降速率越大、降雨持续时间越长,边坡安全系数降幅越大,前峰型降雨影响程度最大;生态护坡能有效减缓和降低水位骤降与降雨对边坡渗流场和稳定性的不利影响,草皮+乔木护坡效果最好,然后是乔木护坡和草皮护坡,这是因为乔木多为Tap型根系,其根土复合体范围更大。在实际工程中,可结合具体情况和工程成本合理选择生态护坡类型。

关键词(KeyWords)： 生态护坡;水位骤降;降雨;渗流场;安全系数

Abstract:

Keywords:

基金项目(Foundation): 湖南省水利厅科技项目(湘水科计[2017]230-9);; 湖南省自然科学基金(2020JJ5575);; 湖南省教育厅科学研究项目(16C0055);; 水沙科学与水灾害防治湖南省重点实验室开放基金(2016SS05,2018SS07);; 国家自然科学基金项目(52008040)

作者(Author): 胡炜,陈健玲,李为华,苏静伊,蒋中明

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