董贵法;刘连生;兰德沛;周子荣;钟文;
DONG Gui-fa;LIU Lian-sheng;LAN De-pei;ZHOU Zi-rong;ZHONG Wen;College of Resources and Environmental Engineering,Jiangxi University of Science and Technology;Jiangxi Key Laboratory of Mining Engineering;

• 1:江西理工大学资源与环境工程学院
• 2:江西省矿业工程重点实验室

摘要(Abstract)：

为研究锡铁山铅锌矿深部石英片岩的力学特性,利用分离式霍普金森杆(SHPB)对埋深863¹ 264m的试样进行25、30、35MPa轴压下的一维动静加载实验,和采用LS-DYNA软件模拟了25、30、35、40、45、50 MPa轴压情况下的冲击实验。研究结果表明:在冲击作用下,试样的一维动态抗压强度和破坏所需的入射能随着埋深的增加而增加,并呈现出常见的压剪破坏模式;当轴压40MPa左右,埋深1 428m的岩石动态抗压值达到最大;当轴压低于40 MPa时,轴压的增大能加强试样的抗压能力;当轴压大于40MPa时,轴压的增加反而减弱了试样的抗压能力。
With the purpose to investigate the mechanical properties of deep quartz schist in Xitieshan lead-zinc mine,the author adopt SHPB in the test of one-dimensional coupled static and dynamic loading,by forcing 25,30,35 MPa axial compression upon specimens extracted from 863—1 264 m,also the LS-DYNA software is utilized to simulate the impact tests with six different axial compression including 25,30,35,40,45,50 MPa.The results show that the one-dimensional dynamic compressive strength and the incident energy to failure of the specimens increase with the increasing of depth under the tests,and the compression and shear failure mode presents in common;also the results state clearly that the dynamic pressure is the strongest of those specimens in the depth 1 428 mwith the axial pressure is around 40 MPa;when the axial pressure is lower than 40 MPa,the specimens' compressive strength enhances with the increasing of axial compression.However,the specimens' compressive strength weakens when the axial compression is increasing when the axial pressure is greater than 40 MPa.

关键词(KeyWords)： SHPB;深部矿柱;动态抗压强度;数值模拟;动静组合加载
SHPB;deep ore pillar;dynamic compressive strength;numerical simulation;dynamic and static combination loading

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(51404111;51504102);; 中国国家留学基金委资助(2017083600237);; 中国博士后科学基金资助项目(2014M562529XB);; 江西省教育厅科学技术研究资助项目(GJJ160643);; 江西理工大学重点学科资助项目(3304000004);江西理工大学清江青年英才支持计划联合资助项目

作者(Authors): 董贵法;刘连生;兰德沛;周子荣;钟文;
DONG Gui-fa;LIU Lian-sheng;LAN De-pei;ZHOU Zi-rong;ZHONG Wen;College of Resources and Environmental Engineering,Jiangxi University of Science and Technology;Jiangxi Key Laboratory of Mining Engineering;

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