Microscopic Study on the Strength, Deformation and Fracture Characteristics of Rocks after Heated

LiLi; Lin LuZheng; Liu Kongmin; Lao Banghua

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Microscopic Study on the Strength, Deformation and Fracture Characteristics of Rocks after Heated

更新时间：2026-06-25

- Microscopic Study on the Strength, Deformation and Fracture Characteristics of Rocks after Heated
- Vol. 11, Issue 4, (1990)
- 作者机构：
  
  重庆大学采矿系
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：28 January 2018，
  
  Published：1990
- 稿件说明：
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LiLi, Lin LuZheng, Liu Kongmin, et al. Microscopic Study on the Strength, Deformation and Fracture Characteristics of Rocks after Heated[J]. 1990, 11(4).
DOI：

LiLi, Lin LuZheng, Liu Kongmin, et al. Microscopic Study on the Strength, Deformation and Fracture Characteristics of Rocks after Heated[J]. 1990, 11(4). DOI：

摘要

本文对砂岩、灰岩、大理岩在不同温度条件下的单轴抗压强度进行了实验研究

并对岩石在各种温度下结构变化进行了镜下分析

探讨了岩石受热后的破裂机理

定性定量地分析了岩石裂纹随温度变化而发展的规律。研究和分析结果表明:在热应力和外应力的作用下

随着温度增加

砂岩单轴抗压强度有增加的趋势

而灰岩、大理石的强度则有所降低。温度对这几种岩石的变形和破坏特性也有很大影响。

Abstract

In this paper

the experimental study on the uniaxial compressive strength of the sandstone

limestone and marble are described

these rock specimens were heated under different temperature. The micro-structure changes of rocks under various temperature are observed with SEM

the fracture mechanism of heated rocks are studied

the developmental law of rock cracks are qualitatively and quantitatively analyzed. The study results showed that thermal stress affects uniaxial compressive strength of rocks

for example

with temperature increasing

the strength of the sandstone has an increase trend

but limestone and marble have a decrease trend. The temperature has a great influence upon deformation and destruction of these rocks too.

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