高放废物处置库中缓冲/回填材料膨胀特性研究进展

李胜杰; 唐朝生; 陈志国; 李昊达; 刘月妙; 施斌

doi:10.13409/j.cnki.jdpme.2018.02.023

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高放废物处置库中缓冲/回填材料膨胀特性研究进展

论文 | 更新时间：2025-12-11

- 高放废物处置库中缓冲/回填材料膨胀特性研究进展
- Advances on Swelling Properties of Buffer/backfill Materials in High-level Radioactive Waste Geological Repository
- 防灾减灾工程学报 2018年38卷第2期页码：373-384
- 作者机构：
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目（41572246、41772280）;国家自然科学基金重点项目（41230636）;优秀青年科学基金项目（41322019）;江苏省自然科学基金项目（BK20171228、BK20170394）资助
- DOI：10.13409/j.cnki.jdpme.2018.02.023
  中图分类号： U443
- 纸质出版：2018
- 稿件说明：
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[1]李胜杰,唐朝生,陈志国,李昊达,刘月妙,施斌.高放废物处置库中缓冲/回填材料膨胀特性研究进展[J].防灾减灾工程学报,2018,38(02):373-384.

李胜杰, 唐朝生, 陈志国, et al. Advances on Swelling Properties of Buffer/backfill Materials in High-level Radioactive Waste Geological Repository[J]. 2018, 38(2): 373-384.
[1]李胜杰,唐朝生,陈志国,李昊达,刘月妙,施斌.高放废物处置库中缓冲/回填材料膨胀特性研究进展[J].防灾减灾工程学报,2018,38(02):373-384. DOI： 10.13409/j.cnki.jdpme.2018.02.023.

李胜杰, 唐朝生, 陈志国, et al. Advances on Swelling Properties of Buffer/backfill Materials in High-level Radioactive Waste Geological Repository[J]. 2018, 38(2): 373-384. DOI： 10.13409/j.cnki.jdpme.2018.02.023.

摘要

根据近年来国内外学者的研究成果

重点从缓冲/回填材料膨胀性试验方法、影响膨胀性的主要因素和膨胀机理等方面总结了该课题的研究现状及进展

得到如下认识:（1）在试验方法方面

根据加载条件可将膨胀率试验分为有荷和无荷两种形式

而膨胀力试验方法主要有三种

不同试验方法获得的膨胀力存在差别;（2）三向膨胀试验为研究缓冲/回填材料膨胀性各向异性提供了可行的途径

柔性边界试验可模拟更真实的膨胀环境;（3）影响缓冲/回填材料膨胀特性的主要因素包括矿物成分、孔隙溶液性质、干密度、初始含水率和添加剂性质等;（4）针对膨润土/添加剂混合物的膨胀性

学界基于膨润土含量、密度、孔隙比等参数提出了多种预测模型;（5）缓冲/回填材料的干密度和试样尺寸会影响其收缩特性。针对目前该课题的研究现状和不足

提出了今后的研究重点和方向

主要包括复杂耦合条件下的膨胀特性、三向膨胀试验与多边界条件试验、具体应用研究、收缩特性研究、添加剂与膨润土相互作用机制、大尺度长期室内模型试验和原位试验等。

Abstract

The swelling properties of buffer/backfill materials in high-level radioactive waste（HLW）repository are one of the significant indexes of their buffer/backfill properties.Based on previous research findings by international and domestic scholars

this paper summarizes current research status and advances from such aspects as follows:swelling test methods for buffer/backfill materials

the main factors affecting swelling properties and shrinkage properties.And the following understanding can be obtained:（1）In terms of test methods

swelling rate tests can be divided into loaded and unloaded according to the loading condition.There are mainly three types of test methods.And there are significant differences in the swelling pressure obtained by various test methods;（2）Three-directional swelling test provides a feasible approach for studying the anisotropy of swelling properties of buffer/backfill materials

and flexible boundary test can simulate more realistic conditions;（3）The main factors affecting the swelling properties include mineral components

properties of pore solution

dry density

initial water content

and properties of additives;（4）In terms of the swelling properties of the mixture of bentonite and additives

various prediction methods are proposed by the academia based on such parameters as content of bentonite

density

and void ratio;（5）The dry density and samples size effectively affect the shrinkage properties.Finally

contrapose the research status and existing deficiencies

some important research topics which should be stressed are proposed

including the swelling properties under complex coupling conditions

three-directional swelling tests

multi-boundary conditions tests

applied research

shrinkage properties research

the mechanism of interaction between additives and bentonite

large-scale long-term indoor model tests

and in-situ tests.

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