| 深部环境下岩石声发射地应力测试及其应用 |
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| 引用本文： | 李啸,汪仁建,李秋涛,彭康.深部环境下岩石声发射地应力测试及其应用[J].矿冶工程,2019,39(2):19-23. |
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| 作者姓名： | 李啸 汪仁建 李秋涛 彭康 |
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| 作者单位： | 1.重庆大学 资源及环境科学学院,重庆 400044;
2.山东黄金金创集团有限公司,山东 烟台 265607;
3.山东金洲矿业集团有限公司,山东 乳山 264501 |
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| 基金项目： | 重庆市基础科学与前沿技术研究专项(cstc2016jcyjA1861);
国家自然科学基金青年基金(51774058, 51504044);
中国博士后科学基金面上项目(2015M570607);
2016年度山东省博士后创新项目专项资金拟资助项目 |
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| 摘 要： | 为了研究深部条件下不同埋藏深度对地应力分布规律的影响, 通过地表重定向技术及一种自主研发的二次取芯技术, 取得了地表以下1 050 m、1 150 m、1 250 m、1 350 m和1 450 m共5个不同深度的岩石声发射试件, 利用岩石声发射Kaiser效应原理, 测得不同水平标高地应力, 经理论计算得出相应的主应力。结果表明, 随着埋藏深度增加, 地应力呈较明显的线性变化。实测巷道应力与理论计算应力分布情况相似。其结果对于该矿区的采矿工程布置具有指导意义。
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| 关 键 词： | 声发射 深部采矿 地应力 岩石力学 |
| 收稿时间： | 2018-09-28 |
Measurement of In-situ Stress in Deep Underground by Acoustic Emission Technique and Its Application |
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| LI Xiao,WANG Ren-jian,LI Qiu-tao,PENG Kang.Measurement of In-situ Stress in Deep Underground by Acoustic Emission Technique and Its Application[J].Mining and Metallurgical Engineering,2019,39(2):19-23. |
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| Authors: | LI Xiao WANG Ren-jian LI Qiu-tao PENG Kang |
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| Affiliation: | 1.College of Resources and Environmental Sciences, Chongqing University, Chongqing 400044, China;
2.Shandong Gold Jinchuang Group Co Ltd, Yantai 265607, Shandong, China;
3.Shandong Jinzhou Mining Group Co Ltd, Rushan 264501, Shandong, China |
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| Abstract: | In order to study the influence of different burial depth on the distribution of in-situ stress in deep underground, 5 rock acoustic emission specimens at the depth of 1 050 m, 1 150 m, 1 250 m, 1 350 m and 1 450 m below the surface were obtained by using the surface reorientation technology and an independently developed secondary coring technology. The in-situ stress at different elevations was measured based on Kaiser effect principle of rock acoustic emission, and the corresponding primary stress was calculated theoretically. The results showed that the in-situ stress changed with the increase of burial depth, obviously following a linear relationship. The measured stress of roadway was similar to the theoretically calculated stress in terms of distribution. The result can be of reference for the layout of the mining area in practical engineering. |
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| Keywords: | acoustic emission deep mining in-situ stress rock mechanics |
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