<?xml version="1.1" encoding="utf-8"?>
<article xsi:noNamespaceSchemaLocation="http://jats.nlm.nih.gov/publishing/1.1/xsd/JATS-journalpublishing1-mathml3.xsd" dtd-version="1.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><front><journal-meta><journal-id journal-id-type="publisher-id">SSSD</journal-id><journal-title-group><journal-title>Scientific and Social Sustainable Development</journal-title></journal-title-group><issn>3066-8964</issn><eissn>3066-8980</eissn><publisher><publisher-name>Art and Technology</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.61369/SSSD.2026070039</article-id><article-categories><subj-group subj-group-type="heading"><subject>Article</subject></subj-group></article-categories><title>花岗岩热- 液氮冲击作用下Ⅰ / Ⅱ复合型断裂行为研究</title><url>https://artdesignp.com/journal/SSSD/2/7/10.61369/SSSD.2026070039</url><author>罗宇晴</author><pub-date pub-type="publication-year"><year>2026</year></pub-date><volume>2</volume><issue>7</issue><history><date date-type="pub"><published-time>2026-04-14</published-time></date></history><abstract>为揭示热- 液氮冲击作用下花岗岩Ⅰ / Ⅱ复合型断裂行为及其演化机制，采用缺口深梁（NDB）试样三点弯曲试验与数字图像相关（DIC）技术，系统研究了不同热处理温度（150、300、450、600 ℃）及裂隙倾角（15&amp;deg;、30&amp;deg;、48&amp;deg;）条件下花岗岩的断裂响应特征。结果表明：热- 液氮冲击显著削弱花岗岩的承载能力与抗裂性能，温度为控制断裂劣化的主导因素。DIC 结果显示，裂纹尖端应变场具有显著局部化特征，应变集中程度随温度升高而增强，高倾角条件下剪切应变占主导地位。</abstract><keywords>干热岩,热- 液氮冲击,Ⅰ / Ⅱ复合型断裂,断裂韧度,数字图像相关（DIC）,应变场演化</keywords></article-meta></front><body/><back><ref-list><ref id="B1" content-type="article"><label>1</label><element-citation publication-type="journal"><p>[1] 巩亮, 韩东旭, 陈峥, 等. 增强型地热系统关键技术研究现状及发展趋势[J]. Natural Gas Industry, 2022, 42(7).[2] 李根生, 武晓光, 宋先知, 等. 干热岩地热资源开采技术现状与挑战[J]. 石油科学通报, 2022, 7(3): 343-364.[3] 张二勇. 干热岩资源调查与勘查试采示范工程简介[J]. 中国地质,2022,49(02):350.[4]Jiang G, Li W, Rao S, et al. Heat flow, depth&amp;ndash;temperature, and assessment of the enhanced geothermal system (EGS) resource base of continental China[J]. Environmental Earth Sciences, 2016, 75(22): 1432.[5]Lin W, Wang G, Gan H, et al. Heat source model for Enhanced Geothermal Systems (EGS) under different geological conditions in China[J]. Gondwana Research, 2023, 122: 243-259.[6] 吴秋红, 夏宇浩, 赵延林, 等. 基于 DIC 及 CPG 技术的热冷循环后花岗岩 I 型断裂特性[J]. 煤炭学报, 2024, 49(7): 3102-3117.[7]Zuo J P, Huang Y M, Liu L F. Investigation on meso-fracture mechanism of basalt with offset notch based on in-situ three-point bending tests[J]. Chin J Rock Mech Eng, 2013, 32(4): 740-746.</p><pub-id pub-id-type="doi"/></element-citation></ref></ref-list></back></article>
