(1. The Air Force Engineering Design and Research Institute,Beijing 100068,China;2. The Third Research Institute of the Corps of Engineering,General Staff of PLA,Luoyang,Henan 471023,China)
Abstract:To improve the explosive resistivity of existing underground cavity,the surrounding rocks anchored by crossing cable method was proposed,and the effect of its were researched by model tests based on the theory of similarity. Then,based on the validity of numerical model was proved,the influence of anchor cable parameters and rock intensity on explosive resistivity were studied by numerical simulation. The work results show that the maximum pressure,maximum acceleration response,maximum displacement response and whole destruct extent of the underground cavity,which surrounding rocks anchored by crossing cable,are lower than those of conventional underground cavity under the same explosive load;meanwhile,the explosive cavity,semidiameter of plastic section and rock crevice of anchored rocks are smaller,the explosive energy dissipated by anchored rocks nearby burst point is bigger. The bigger anchor cable area,anchor cable angle and anchor cable length and the stronger rock mass intensity are,the less the structure vault displacement response is,while the effect of anchor cable interval is opposite. The first condition to improve the explosive resistivity of underground cavity is to increase the anchor cable angles,subsequently,to enhance the compression capacity of anchored rocks or to reduce the interval of anchor cable. Whereas,the impact of anchor cable area and anchor cable length upon explosive resistivity are feeble. The study can provide references to the design of protective projects and the reinforcement of the wall rock and tunnels.
杨自友. 锚固洞室的抗爆性能研究[D]. 合肥:中国科学技术大学,2008.(YANG Ziyou .Study on the anti-detonating characteristics of underground opening reinforced by rock bolts[D]. Hefei:University of Science and Technology of China,2008.(in Chinese))
Your browse does not support frame! " target="_blank">
[3]
TANNANT D D,BRUMMER R K. Rock bolt behavior under dynamic loading field tests and modeling[J]. International Journal of Rock Mechanics and Mining Sciences,1995,32(6):537-550.
Your browse does not support frame! " target="_blank">
[9]
张亮亮.抗爆洞室不同部位预应力锚索受力特征研究[D]. 武汉:武汉理工大学,2009.(ZHANG Liangliang. Study on stress character of prestessed anchorage in different regional antiknock chamber effected[D]. Wuhan:Wuhan University of Technology,2009.(in Chinese))
Your browse does not support frame! " target="_blank">
[2]
杨自友,顾金才,陈安敏,等. 爆炸波作用下锚杆间距对围岩加固效果影响的模型试验研究[J]. 岩石力学与工程学报,2008,27(4):757-764.(YANG Ziyong,GU Jincai,CHEN Anmin. Model experiment study on influences of reinforcement on intervals of rock bolts in surrounding rock under explosive waves[J]. Chinese Journal of Rock Mechanics and Engingeering,2008,27(4):757-764.(in Chinese))
王光勇,顾金才,陈安敏,等. 顶爆作用下锚杆破坏形式及破坏机制模型试验研究[J]. 岩石力学与工程学报,2012,31(1):27-31. (WANG Guangyong,GU Jincai,CHEN Anmin,et al. Model test research on failure forms and failure mechanism of anchor bolts under top explosion[J]. Chinese Journal of Rock Mechanics and Engineering,2012,31(1):27-31.(in Chinese))
[11]
沈 俊,刘瑞朝,杨建超,等. 弹体侵彻岩体效应试验与理论研究[J]. 岩石力学与工程学报,2008,27(5):946-952.(SHEN Jun,LIU Ruichao,YANG Jianchao,et al. Experimental and theoretical studies of projectile penetrating rocks[J]. Chinese Journal of Rock Mechanics and Engineering,2008,27(5):946-952.(in Chinese))
陈剑杰,孙 钧,林俊德,等. 强爆炸应力波作用下岩石地下洞室的破坏现象学[J]. 解放军理工大学学报,2007,8(6):582-588. (CHEN Jianjie,SUN Jun,LIN Junde,et al. Failure of rock openings under intensive explosion stress wave[J]. Journal of PLA University of Science and Technology,2007,8(6):582-588.(in Chinese))
Your browse does not support frame! " target="_blank">
[8]
方从严,卓家寿. 锚杆加固机制的试验研究现状[J]. 河海大学学报:自然科学版,2005,33(6):696-700.(FANG Congyan,ZHUO Jiashou. Experimental study actuality of rock bolts reinforcement mechanism[J]. Journal of Hohai University:Natural Science,2005,33(6):696-700.(in Chinese))
Your browse does not support frame! " target="_blank">
[10]
陈小伟. 穿甲、侵彻问题的若干工程研究进展[J]. 力学进展,2009,39(3):316-351.(CHEN Xiaowei. Advances in the penetration/ perforation of rigid projectiles[J]. Advanced in Mechanics,2009,39,(3):316-351.(in Chinese))
[12]
徐干成,顾金才,张向阳,等. 地下洞库围岩外加固抗炸弹侵彻性能研究[J]. 岩石力学与工程学报,2012,31(10):2 064-2 070.(XU Gancheng,GU Jincai,ZHANG Xiangyang,et al. Penetration resistivity research on anchored cavern surface rock[J]. Chinese Journal of Rock Mechanics and Engineering,2012,31(10):2 064-2 070.(in Chinese))
Your browse does not support frame! " target="_blank">
[14]
徐景茂,顾金才,陈安敏,等. 拱脚局部加长锚杆锚固洞室抗爆模型试验研究[J]. 岩石力学与工程学报,2012,31(11):2 182-2 186. (XU Jingmao,GU Jincai,CHEN Anmin et al. Model test study of anti-explosion capacity of anchored tunnel with local lengthening anchors in arch springing[J]. Chinese Journal of Rock Mechanics and Engineering,2012,31(11):2 182-2 186.(in Chinese))
Your browse does not support frame! " target="_blank">
[16]
吴 亮,卢文波,宗 琦. 岩石中柱状装药爆炸能量分布[J]. 岩石力学,2006,27(5):735-739.(WU Liang,LU Wenbo,ZONG Qi. Distribution of explosive energy consumed by column charge in rock[J]. Rock and Soil Mechanics,2006,27(5):735-739.(in Chinese))
Your browse does not support frame! " target="_blank">
[18]
北京理工大学,ANSYS/LS-DYNA中国技术支持中心. ANSYS/LS- DYNA 算法基础和使用方法[M]. [s.l.]:[s.n.],1987:71-87.(Beijing Technology University,NSYS/LS-DYNA China Technical Support Centre. ANSYS/LS-DYNA The foundation of calculation and using method[M]. [s.l.]:[s.n.],1987:71-87.(in Chinese))
Your browse does not support frame! " target="_blank">
[13]
杨苏杭,梁 斌,顾金才,等. 锚固洞室抗爆模型试验锚索预应力变化特性研究[J]. 岩石力学与工程学报,2006,25(增2):3 749-3 756.(YANG Suhang,LIANG Bin,GU Jincai,et al. Research on characteristics of prestress change of anchorage cable in anti-explosion model test of anchored cavern[J]. Chinese Journal of Rock Mechanics and Engineering,2006,25(Supp.2):3 749-3 756.(in Chinese))
Your browse does not support frame! " target="_blank">
[15]
徐干成,顾金才,袁伟泽,等. 洞室围岩交叉锚固结构抗爆性能模型试验研究[J]. 地下空间与工程学报,2014,10(5):1 078-1 085. (XU Gancheng,GU Jincai,Yuan Weize et al. Model test study on explosive resistance of intercross bolted rock mass structure in underground space[J]. Chinese Journal of underground space and Engineering,2014,10(5):1 078-1 085.(in Chinese))
Your browse does not support frame! " target="_blank">