土工基础

›› 2012, Vol. 26 ›› Issue (2): 93-95.

• 工程实录 • 上一篇    下一篇

堆石体灌水法密度试验薄膜探讨

段飞1，岳远明1，贾洪波2   

  1. （1.中国水电顾问集团中南勘测设计研究院，长沙 410014；2.武警水电部队二支队，南宁 53000）
  • 收稿日期:2011-07-11 出版日期:2012-04-20 发布日期:2012-04-27
  • 作者简介:段飞（1962-），女，湖北人，本科生，中国水电顾问集团中南勘测设计研究院高工，研究方向为岩土试验。

The Effect of Membrane Thickness on the Density Measurement  by Water Filling Method for the Rock Fills

DUAN Fei1, YUE Yuanming1，JIA Hongbo2   

  1. （1. Hydro-China Central South Survey and Design Institute, Changsha, 410014；
    2. Second Division of Hydro-Electricity Construction, China Armed Police, Nanning, 530000）
  • Received:2011-07-11 Online:2012-04-20 Published:2012-04-27

摘要： 目前，我国堆石坝技术已较为成熟，堆石体是筑坝和围堰结构的重要组成部分，而碾压方式下堆石体的干密度是影响坝体变形的主要因素,也是大坝填筑质量的主要控制指标之一。现场常采用挖坑灌水法来测定其填筑的密实度，挖坑灌水法原理简单,操作简便,但要测定准确却非常困难,且薄膜厚度对测定结果也存在一定影响，现介绍某工程采用挖坑灌水法测定堆石体填筑密度过程中，采用两种厚度薄膜进行试验比对的工程经验。

关键词: 堆石体, 灌水法, 塑料薄膜, 密度

Abstract: The rock fill dam construction becomes a matured construction technology in China. The rock fills is an important part of dam body and cofferdam structures. The rockfill density under different compaction methods might potentially affect the deformation of the constructed dam. Therefore, the density of the rock fill material is one of the major controlling factors for in the dam construction.  The insitu density tests are usually measured by the water filling method. Although this method is easy to operate, it is difficult to obtain an accurate measurement. Further, the membrane thickness might potentially affect the test results. This paper presents the experience on the density measurements by using two different plastic membranes.

Key words: Rock Fills, Water Filling Method, Plastic Membrane, Density Measurement