摘要
针对芦坝水库均质土坝沟谷地形、坝基岩溶发育、坝体渗漏破坏等问题,为满足水库加高扩容条件,设计采用坝体下游培厚加高方案。并结合库区地形地貌和水文地质等条件,对土坝扩建工程整体布置和结构体型进行了详细分析和计算。结果表明:各荷载组合工况下,坝体渗透比降小于规范值,不会发生渗流破坏;大坝上游坡面、下游坝坡和新老坝体接触面的稳定安全系数均大于规范值,整体安全稳定。
Aiming at the homogeneous earth dam gully topography of luba reservoir,Karst development of dam foundation,Dam leakage failure and other problems,the design adopts the scheme of dam body downstream thickening and heightening combined with the reservoir topographical and hydrogeological conditions to meet the conditions of increasing and expanding capacity of the reservoir.The overall layout and structural shape of earth dam extension project are analyzed and calculated in detail not occur when the seepage ratio drop of dam body is lower than the normal value under various load combination conditions.The stability safety coefficient of the upstream slope,downstream slope and the contact surface of the new and old dam body is higher than the norm value,and the overall safety is stable.
出处
《吉林水利》
2019年第7期37-41,共5页
Jilin Water Resources
关键词
均质土坝
渗透比降
抗滑稳定
芦坝水库
homogeneous earth dam
Permeability drop
Stability against sliding
LuBa reservoir
作者简介
杨祥(1986-),男,白族,盘州人,本科,工程师,主要从事水工结构设计工作。
