强风化岩防渗土料的压实及渗透特性  

Compaction and Permeability of a Soft Rock as the Core of a Rockfill Dam

作　　者：温彦锋[1] 蔡红[1] 边京红[1] 

机构地区：[1]中国水利水电科学研究院北京,100044

出　　处：《水力发电学报》2000年第2期17-24,共8页Journal of Hydroelectric Engineering

摘　　要：强风化岩开采料的细料含量很低 ,能否用作高土石坝防渗土料 ,取决于其在压实过程中的颗粒破碎程度。本文对取自同一料场的两种强风化砂页岩料进行了大量的击实试验研究 ,分析了不同条件下土料的压实特性和颗粒破碎规律 ;通过不同控制条件下土料的渗透试验 ,探讨了多种影响因素对土料渗透性能的影响规律 ,提出了强风化岩作为防渗土料使用的建议措施。A soft rock having broad gradation and low fine content is used as the impervious core material of a high rockfill dam. However, its permeability may not be as low as required. Therefore a series of laboratory tests on compaction and permeability were carried out. In this paper, the compaction features, gradation variation during compaction, and the permeability of the compacted soils are introduced.

关 键 词：强风化岩 压实 颗粒级配 渗透性 防渗土料 

分 类 号：TV443[水利工程—水工结构工程] TV41