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《Journal of China Coal Society》 2019-02
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Research and engineering application of high pre-stressed resistance enhancement large deformation bolt in deep soft rock roadway

ZHANG Hongjun;LI Haiyan;ZHANG Taiping;WANG Qiang;WANG Wei;WANG Xin;ZHAO Hui;CHANG Tao;GUO Tianchan;Shandong Institute of Geological Sciences;Research Center of Geotechnical and Structural Engineering,Shandong University;Shandong Electric Power Engineering Consulting Institute Co.,Ltd.;College of Earth Science,Jilin University;  
In order to overcome the support problem of large deformation and the high repairing rate of deep soft rock roadway,a new type of high pre-stressed increase-resistance large deformation bolt is developed based on previous studies.It is mainly composed of pallet,metal clip,rod body 1,rod body 2,connection sleeve,cone-thimble and sliding sleeve.Initial pre-stress applied on the new bolt can reach 120 kN,the let-point-pressure can be controlled to 180-240 kN,the deformation can be adjusted flexibly within 150-1 000 mm.In the process of deformation,it can maintain a high level of increasing support resistance. Static tensile tests in laboratory show that compared with the traditional bolt,the new bolt has excellent characteristics of "first to support,then let the pressure,the last continue to support,prevent the fracture and increase the resistance". In order to further study the mechanical support mechanism of the new bolt,the CABLE unit of FLAC3 D numerical simulation software is secondarily developed by using Fish language programming,and the axial tensile mechanical behavior of large deformation bolt is simulated with high precision.Research on the deformation mechanism of a typical deep large deformation soft rock roadway-500 m hydrophobic roadway at Jinyang coal mine in China shows that the low strength of surrounding rock,high ground stress and low initial pre-stress of bolt are the main factors leading to its deformation.It has been unable to solve the outstanding contradiction among the three by using the traditional bolt support. In order to maintain the stability of roadway surrounding rock,it is necessary to strengthen the support strength for reducing the deformation rate of surrounding rock and improving the ability of supporting members to adapt to the large deformation of surrounding rock.To verify the support effect of new bolt,a new "bolt-mesh-spurting"support technology with the core of new high pre-stressed increase-resistance large deformation bolt is proposed,according to the deformation characteristics and mechanism of surrounding rock in typical deep soft rock roadway of-500 m water discharging gateway in Jinyang coal mine. Numerical simulation and field monitoring results show that the new supporting scheme can effectively improve the stress state of bolt and reduce the deformation of surrounding rock,the final deformation of surrounding rock decreases by nearly 60% compared with the original support scheme.
【Fund】: 国土资源部金矿成矿过程与资源利用重点实验室和山东省金属矿产成矿地质过程与综合利用重点实验室联合开放课题资助项目(kfkt201803);; 国家自然科学基金面上资助项目(51379114)
【CateGory Index】: TD353.6
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【Citations】
Chinese Journal Full-text Database 2 Hits
1 KANG Hongpu,WANG Jinhua,LIN Jian (Coal Mining and Design Branch,China Coal Research Institute,Beijing 100013,China);CASE STUDIES OF ROCK BOLTING IN COAL MINE ROADWAYS[J];岩石力学与工程学报;2010-04
2 Hou Chaojiong;He Yanan (China University of Mining & Technology, Xuzhou, 221008);PRINCIPLE AND APPLICATION OF ROCKBOLTS WITH EXTENSIBLE ROD[J];岩石力学与工程学报;1997-06
【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 SUN Zhiyong;ZHANG Zhen;CONG Ridong;Mining Design Department, Tiandi Science and Technology Co., Ltd.;Institute of Technology of Jincheng Coal Group;;Failure Characteristics and Control of Surrounding Rock under Superimposed Stress in Outburst Mines[J];山西煤炭;2015-06
2 LI Jian-bo;WANG Zhan-ling;LI Zhong-wei;Coal Mining amd Designing Department , Tiandi Science and Technology Co., Ltd.;;High Strength Bolting Technology Based on Roadways under Mining Conditions[J];煤炭技术;2015-12
3 SHAN Renliang;KONG Xiangsong;YAN Fayuan;MENG Chi;School of Mechanics and Civil Engineering,China University of Mining and Technology;;RESEARCH ON SIDEWALL AND CORNER STRENGTHENED SUPPORT FOR COAL ROADWAY BY MODELING EXPERIMENTS[J];岩石力学与工程学报;2015-11
4 LI Xiao-long;Meihuajing Mine,Shenhua Ningxia Mining Industry Group;;The Optimal Supporting Row Spacing of 1106_108 Transportation Roadway Anchor Bolt Support[J];煤炭与化工;2015-10
5 Zhai Xinxian;Qin Longtou;Zhao Gaojie;Chen Chengyu;Li Wenjie;School of Energy Science and Engineering,Henan Polytechnic University;Henan Provincial Coordinated Innovation Center for Coal Safety Production;Xinzhuang Mine,Henan Shenhuo Coal and Electric Power Company Limited;;Study on roof pressure-relief mechanism and application technology of large cross section chamber[J];煤炭科学技术;2015-10
6 LIN Jian;WANG Yang;YANG Jing-he;WANG Zheng-sheng;CAI Jia-fang;Coal Mining & Designing Department,Tiandi Science & Technology Co.,Ltd.;Coal Mining & Designing Branch,China Coal Research Institute;State Key Laboratory of Coal Resource High-efficiency Mining & Clean Utilization (China Coal Research Institute);;Analogue Simulation of Supporting Stress Field Characteristic of Single Anchored Bolt under Different Working Loads[J];煤矿开采;2015-05
7 SHI Yao;LIN Jian;WANG Zheng-sheng;YANG Jing-he;Coal Mining & Designing Department,Tiandi Science & Technology Co.,Ltd.;Coal Mining & Designing Branch,China Coal Research Institute;;Cause Analysis and Countermeasures of Small Diameter Pre-stress Anchored Cable Breakage in Coalmine[J];煤矿开采;2015-05
8 KANG Hong-pu;WU Yong-zheng;HE Jie;FU Yu-kai;Coal Mining and Designing Department,Tiandi Science and Technology Co.,Ltd.;Coal Mining and Designing Branch,China Coal Research Institute;State Key Laboratory of Coal Mining and Clean Utilization;;Rock bolting performance and field practice in deep roadway with rock burst[J];煤炭学报;2015-10
9 XIE Sheng-rong;LI Shi-jun;HUANG Xiao;SUN Yan-ding;YANG Jun-hui;QIAO Shun-xing;Faculty of Resource & Safety Engineering,China University of Mining & Technology ( Beijing);Xingdong Mine,Jizhong Energy Group Co.,Ltd.;;Surrounding rock principal stress difference evolution law and control of gob-side entry driving in deep mine[J];煤炭学报;2015-10
10 YU Wei-jian;FENG Tao;WANG Wei-jun;WANG Ping;YUAN Chao;GUO Gang-ye;DU Shao-hua;Hunan Key Laboratory of Safe Mining Techniques of Coal Mines,Hunan University of Science and Technology;School of Energy and Safety Engineering,Hunan University of Science and Technology;;Support problems and solutions of roadway surrounding rock for thin coal seams under complex conditions in Southern China[J];煤炭学报;2015-10
【Secondary Citations】
Chinese Journal Full-text Database 10 Hits
1 KANG Hong-pu,LIN Jian,WU Yong-zheng(Coal Mining and Designing Branch,China Coal Research Institute,Beijing 100013,China);High pretensioned stress and intensive cable bolting technology set in full section and application in entry affected by dynamic pressure[J];煤炭学报;2009-09
2 FENG Zhi-qiang1,2,KANG Hong-pu1,2(1.Beijing Coal Mining Institute,Central Coal Research Institute,Beijing 100013,China;2.Coal Mining & Design Department,Tian Di Science & Technology Co.,Ltd,Beijing 100013,China);Technology Research of Chemical Grouting for Cracked Coal-Rock Mass and Demonstration Project[J];长江科学院院报;2009-07
3 KANG Hongpu,SI Linpo(Coal Mining and Design Branch,China Coal Research Institute,Beijing 100013,China);TEST AND ANALYSIS OF COAL AND ROCK MASS STRENGTH IN DEEP COAL MINE[J];岩石力学与工程学报;2009-07
4 KANG Hongpu1,JIANG Tieming2,ZHANG Xiao1,YAN Lixin1(1.Coal Mining and Design Branch,China Coal Research Institute,Beijing 100013,China;2.Jincheng Anthracite Mining Group,Ltd.,Jincheng,Shanxi 048006,China);RESEARCH ON IN-SITU STRESS FIELD IN JINCHENG MINING AREA AND ITS APPLICATION[J];岩石力学与工程学报;2009-01
5 ;High strength bolt support technique in deep well and soft-rock tunnel[J];中国矿山工程;2008-04
6 CAO Chen-ming1,2(1.Coal Mining & Designing Branch,China Coal Research Institute,Beijing 100013,China;2.Lu'an Mining Group Corporation,Changzhi 046204,China);Numerical Analysis of Stress Distribution Rules of Shaft Station and Neighboring Caverns[J];煤矿开采;2008-03
7 WANG Jin-hua,KANG Hong-pu,GAO Fu-qiang(China Coal Research Institute,Beijing 100013,China);Numerical simulation on load-transfer mechanisms and stress distribution characteristics of cable bolts[J];煤炭学报;2008-01
8 KANG Hong-pu,WANG Jin-hua,LIN Jian(Coal Mining Branch,China Coal Research Institute,Beijing 100013,China);High pretensioned stress and intensive bolting system and its application in deep roadways[J];煤炭学报;2007-12
9 KANG Hong-pu1,JIANG Tie-ming2,GAO Fu-qiang1(1.Coal Mining Branch,China Coal Research Institute,Beijing 100013,China;2.Jincheng Anthracite Coal Mining Grop.Ltd.,Jincheng 048006,China);Effect of pretensioned stress to rock bolting[J];煤炭学报;2007-07
10 KANG Hongpu,LIN Jian,ZHANG Xiao(Beijing Mining Research Institute,China Coal Research Institute,Beijing 100013,China);RESEARCH AND APPLICATION OF IN-SITU STRESS MEASUREMENT IN DEEP MINES[J];岩石力学与工程学报;2007-05
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