茨哈峡砂砾石料级配特征及可利用性研究  

Study on Grading Characteristics and Utilizability of Sand and Gravel Materials in the Tsha Ha Gorge

作　　者：李明昊 薛会师 谷思宇 张晖[2] 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)

机构地区：[1]黄河上游水电开发有限责任公司工程建设分公司,青海西宁810000 [2]中国电建集团西北勘测设计研究院有限公司,陕西西安710065 [3]长安大学地质工程与测绘学院,陕西西安710054

出　　处：《陕西水利》2025年第1期113-116,共4页Shaanxi Water Resources

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.

关 键 词：砂砾石 级配特征 可利用性 茨哈峡 

分 类 号：TV431[水利工程—水工结构工程]