欢迎来到OAJRC平台！

期刊栏目

投稿

审稿

期刊目次

加入编委

期刊订阅

添加您的邮件地址以接收即将发行期刊数据：

当前位置：科学发展研究 > 2025年 5卷 (8)期

Open Access Article

Scientific Development Research . 2025; 5: (8) ; 98-106 ; DOI: 10.12208/j.sdr.20250303.

Study on the mechanical properties of sandstone under the influence of coal fire metamorphism
煤火烧变作用下砂岩力学性能研究

作者： 刘佳洪, 李海鉴 *, 周彩雯

新疆大学地质与矿业工程学院新疆乌鲁木齐

*通讯作者：李海鉴,单位：新疆大学地质与矿业工程学院新疆乌鲁木齐；

新疆维吾尔自治区重点研发专项（项目编号：2022B03025）

发布时间: 2025-12-21 总浏览量: 36

PDF 全文下载引用本文

摘要

针对煤田火区治理过程中发生的边坡垮落、塌陷等灾害问题，以新疆乌鲁木齐准南矿区煤系砂岩为研究对象，开展了25–1200℃高温试验，运用X射线衍射（XRD）和单轴压缩试验等方法，重点分析了温度对煤田火区砂岩矿物组分和力学性能的影响规律。研究结果表明：温度对砂岩矿物组成具有显著影响，从而导致砂岩的力学性能发生改变。随着烧变温度的上升，砂岩的峰值应力、峰值应变、弹性模量总体变化同步，呈现出快速增长、缓慢增长、急剧下降三个阶段变化特征，在600℃砂岩强度达到峰值。结果表明，砂岩力学参数随温度变化呈现显著阶段性特征，其中600℃为强度由增强向劣化转变的关键阈值。

关键词： 煤田火区；砂岩；热损伤；矿物组分；力学性能

Abstract

To address slope failures and subsidence during the remediation of coalfield fire zones, this study used coal-bearing sandstone from the Zhunan mining area in Ürümqi, Xinjiang. High-temperature experiments ranging from 25 to 1200 °C were conducted, and methods such as X-ray diffraction (XRD) and uniaxial compression tests were employed to analyze the influence of temperature on the mineral composition and mechanical properties of sandstone in coalfield fire zones. The results shows that temperature significant influences the mineral composition of sandstone, thereby altering its mechanical properties. As the calcination temperature increases, the peak stress, peak strain, and elastic modulus of the sandstone change synchronously, exhibiting three distinct stages: rapid increase, gradual increase, and abrupt decrease. The strength of the sandstone reaches its peak at 600 °C. The findings demonstrate that the mechanical parameters of sandstone show clear stage-wise characteristics with temperature variation, with 600 °C serving as the critical threshold at which strength transitions from enhancement to deterioration.

Key words： Coalfield fire area; Sandstone; Thermal damage; Mineral composition; Mechanical properties

参考文献 References

[1] WU L, HUANG Y, LI J, et al. Macro- and micro-mechanical response and damage mechanism of sandstone under high-temperature conditions[J]. International Journal of Mining Science and Technology, 2025, 35(2): 265-274.

[2] XIAO W, ZHANG D, LI S, et al. Microstructural and thermal properties of coal measure sandstone subjected to high temperatures[J]. Journal of Rock Mechanics and Geotechnical Engineering, 2024, 16(8): 2909-2921.

[3] WONG L N Y, ZHANG Y, WU Z. Rock strengthening or weakening upon heating in the mild temperature range ?[J]. Engineering Geology, 2020, 272: 105619.

[4] ZHANG J, HUANG J, BU Y, et al. Experimental study on the mechanical properties of sandstone under different temperatures and cooling methods[A]. SSRN, 2025[2025-08-08].

[5] GUO H, SUN Q, FENG G, et al. In-situ observations of damage-fracture evolution in surrounding rock upon unloading in 2400-m-deep tunnels[J]. International Journal of Mining Science and Technology, 2023, 33(4): 437-446.

[6] LIU L, JIN J, LIU J, et al. Mechanical properties of sandstone under in-situ high-temperature and confinement conditions[J]. International Journal of Minerals, Metallurgy, and Materials, 2025, 32(4): 778-787.

[7] XIAO W, ZHANG D, LI S, et al. Microstructural and thermal properties of coal measure sandstone subjected to high temperatures[J]. Journal of Rock Mechanics and Geotechnical Engineering, 2024, 16(8): 2909-2921.

[8] LI X, PENG J, XIE Y, et al. Influence of high-temperature treatment on strength and failure behaviors of a quartz-rich sandstone under true triaxial condition[J]. Lithosphere, 2022, 2022(Special 10): 3086647.

[9] SHEN M, ZHAO Y, BI J, et al. Micro-damage evolution and macro-mechanical property of preloaded sandstone subjected to high-temperature treatment based on NMR technique[J]. Construction and Building Materials, 2023, 369: 130638.

[10] XIAO W, YU G, LI H, et al. Experimental study on the failure process of sandstone subjected to cyclic loading and unloading after high temperature treatment[J]. Engineering Geology, 2021, 293: 106305.

[11] GAO S, WU Y, YANG X. Experimental study on the changes to the microstructures and dynamic mechanical properties of layered sandstone after high-temperature treatment[J]. Applied Sciences, 2024, 14(24): 11729.

[12] LI M, LIU X. Effect of thermal treatment on the physical and mechanical properties of sandstone: insights from experiments and simulations[J]. Rock Mechanics and Rock Engineering, 2022, 55(6): 3171-3194.

[13] SHEN Y, YANG Y, YANG G, et al. Damage characteristics and thermo-physical properties changes of limestone and sandstone during thermal treatment from −30 °C to 1000 °C[J]. Heat and Mass Transfer, 2018, 54(11): 3389-3407.

[14] LIU S, HUANG Z. Exploration of microstructure characteristics and mechanical behaviors of thermal-damaged argillaceous sandstone via LF-NMR and µ-CT technologies[J]. Geomechanics and Geophysics for Geo-Energy and Geo-Resources, 2023, 9(1): 27.

[15] JIN P, HU Y, SHAO J, et al. Influence of temperature on the structure of pore–fracture of sandstone[J]. Rock Mechanics and Rock Engineering, 2020, 53(1): 1-12.

[16] YANG S Q, RANJITH P G, JING H W, et al. An experimental investigation on thermal damage and failure mechanical behavior of granite after exposure to different high temperature treatments[J]. Geothermics, 2017, 65: 180-197.

[17] ULUSAY R. The present and future of rock testing: highlighting the ISRM suggested methods[M]//ULUSAY R. The ISRM Suggested Methods for Rock Characterization, Testing and Monitoring: 2007-2014. Cham: Springer International Publishing, 2015: 1-22[2025-10-17].

[18] 吴星辉, 蔡美峰, 任奋华, 等. 不同热处理作用下花岗岩纵波波速和导热能力的演化规律分析[J]. 岩石力学与工程学报, 2022, 41(3): 457-467.

[19] LIN H, LIU W, ZHANG D, et al. Study on the degradation mechanism of mechanical properties of red sandstone under static and dynamic loading after different high temperatures[J]. Scientific Reports, 2025, 15(1): 11611.

引用本文

刘佳洪, 李海鉴, 周彩雯, 煤火烧变作用下砂岩力学性能研究[J]. 科学发展研究, 2025; 5: (8) : 98-106.

入驻平台

回到顶部

搜索文章: