Study of sandstone creep characteristics under stepwise
loading pore water pressures

YANG Hong-wei; XU Jiang; PENG Shou-jian; NIE Wen

doi:10.16285/j.rsm.2015.S2.050

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Study of sandstone creep characteristics under stepwise loading pore water pressures

更新时间：2026-06-25

- Study of sandstone creep characteristics under stepwise loading pore water pressures
- Vol. 36, Issue S2, Pages: 365-370(2015)
- 作者机构：
  
  1. 宜宾学院矿业工程研究所,四川,宜宾,644007
  2. 重庆大学煤矿灾害动力学与控制国家重点试验室,重庆,400044
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2015.S2.050
  CLC： TU452
- Online First：14 June 2018，
  
  Published：2015
- 稿件说明：
移动端阅览
YANG Hong-wei, XU Jiang, PENG Shou-jian, et al. Study of sandstone creep characteristics under stepwise loading pore water pressures[J]. 2015, 36(S2): 365-370.
DOI：

YANG Hong-wei, XU Jiang, PENG Shou-jian, et al. Study of sandstone creep characteristics under stepwise loading pore water pressures[J]. 2015, 36(S2): 365-370. DOI： 10.16285/j.rsm.2015.S2.050.

摘要

采用RLW－2000 M微机控制煤岩流变仪，以细粒砂岩为研究对象，对三轴压缩条件下岩石孔隙水压力分级加载蠕变试验进行了蠕变特性及模型研究，重点分析了孔隙水压力分级加载时蠕变条件下岩石的应变（应变速率）、等效孔隙体积（体积速率）演化曲线，同时对不同孔隙水压力分级加载条件下的岩石蠕变演化曲线进行了模型分析和对比。试验结果表明，逐级加载孔隙水压作用下细粒砂岩的蠕变曲线符合蠕变演化3阶段特征；分级加载水压力的孔隙体积演化规律符合微孔洞的损伤过程的3个阶段规律；利用西原体模型进行理论与试验蠕变曲线对比，蠕变方程曲线与试验曲线的演化规律吻合。

Abstract

The studies of

creep and damage of fine sandstone under step loading of pore water pressure are carried out by triaxial compression creep tests using the coal and rock computer controlled rheological testing machine RLW-2000 M. The highlights include studies of volumetric strain(rate) and equivalent pore volume(rate) evolution curves of rock creep under different stepwise loadings of pore water pressure. In addition

evolutions of rock creep curves are analyzed. The results show that the creep curves are consistent with three stages in typical creep process. The evolutions of pore volume are consistent with three stages in damage process of the microholes under stepwise loading of pore water pressure. The theoretical analysis of creep curves by Nishihara model was validated by experiments.

关键词

Keywords

references

Views

501

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Analysis of energy evolution during the step loading and unloading creep experiments of sandstone

Preliminary study on creep characteristics and model of sandstone under attenuated oscillation disturbance

Evolution of anisotropic mechanical properties and damage model of sandstone under unidirectional freeze-thaw action

Experimental study on accelerated destabilisation of creeping coal body under medium impact dynamic loading

Analysis of high temperature damage and modulus of sandstone

Related Author

HAN Chao

PANG De-peng

LI De-jian

YANG Song

WANG Jun-guang

WEI Zhong-gen

XIN Tian-yu

LIANG Bing

Related Institution

State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology (Beijing)

School of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing)

School of Mechanics and Engineering, Liaoning Technical University

Shenyang Research Institute Co., Ltd., China Coal Technology & Engineering Group

Safety Science and Engineering College, Liaoning Technical University

AI问答

⁰