摘要
砂砾石作为筑坝材料具有强度高、可压实性好、经济指标优越等特点,目前在混凝土面板堆石坝中得到越来越多的应用。但也存在着级配连续性等相关问题。为了解茨哈峡料场Ⅲ区砂砾石能否作为筑坝材料,共布置了5个深度50 m的超深竖井,通过全井深无间断筛分试验,对料层总体级配曲线特征和粗细程度进行划分,从而获得砂砾石的各种特征参数和粒径分布特征,结合已建或在建同类型砂砾石坝的筑坝经验及现行有关规范,认为茨哈峡料场Ⅲ区砂砾石料能够满足筑坝要求。
Sand and gravel materials,characterized by high strength,good compactability,and superior economic indicators,are increasingly being used in concrete-faced rockfill dams.However,issues such as continuity of grading remain.To determine whether the sand and gravel materials from Zone III of the Tsha Ha Gorge quarry can be used as dam construction materials,five ultra-deep vertical shafts,each 50 meters deep,were arranged.Through full-depth continuous sieving tests,the overall grading curve characteristics and gradation of the material layers were analyzed to obtain various characteristic parameters and particle size distribution features of the sand and gravel materials.Combined with the dam construction experience and current relevant specifications of similar sand and gravel dams under construction or already built,it is concluded that the sand and gravel materials from Zone III of the Tsha Ha Gorge quarry can meet the requirements fordam construction.
作者
李明昊
薛会师
谷思宇
张晖
Li Minghao;Xue Huishi;Gu Siyu;Zhang Hui(Engineering Construction Branch of Yellow River Upstream Hydropower Development Co.,Ltd.,Xining 810000,Qinghai;POWERCHINA Northwest Engineering Corporation Limited,Xi'an 710065,Shaanxi;School of Geological Engineering and Geomatics,Chang'an University,Xi'an 710054,Shanxi)
出处
《陕西水利》
2025年第1期113-116,共4页
Shaanxi Water Resources
关键词
砂砾石
级配特征
可利用性
茨哈峡
Sand and gravel
grading characteristics
utilizability
Tsha Ha Gorge
作者简介
李明昊(1998-),男,青海西宁人,助理工程师,主要从事水利水电工程建设工作;通讯作者:谷思宇(2000-),男,江苏盐城人,硕士研究生,主攻方向:水电工程、地质工程。
