爆破扰动下邻近层状围岩隧道的稳定性与振速阈值

吴亮; 李凤; 卢文波; 陈明; 许锋

doi:10.11883/1001-1455(2017)02-0208-07

爆破扰动下邻近层状围岩隧道的稳定性与振速阈值

doi: 10.11883/1001-1455(2017)02-0208-07

吴亮^{1, 2,},
李凤^{1, 2, 4},
卢文波³,
陈明³,
许锋^{1, 2}

1.
武汉科技大学理学院，湖北武汉 430065
2.
中铁港航-武汉科技大学爆破技术研究中心，湖北武汉 430065
3.
武汉大学水资源与水电工程科学国家重点实验室，湖北武汉 430072
4.
贵州新联爆破工程集团有限公司，贵州贵阳 550002

基金项目:

国家自然科学基金项目 51004079

国家自然科学基金项目 51479147

湖北省自然科学基金项目 2014CFB822

水利部科技推广计划项目 TG1522

详细信息

作者简介:
吴亮(1980-)，男，博士，副教授，wuliangwust@sina.com

中图分类号: O382.2
计量
- 文章访问数: 4564
- HTML全文浏览量: 1372
- PDF下载量: 459
- 被引次数: 0
出版历程
- 收稿日期: 2015-09-07
- 修回日期: 2015-11-18
- 刊出日期: 2017-03-25

Vibration velocity threshold of a tunnel adjacent to surrounding layered rocks under blasting load

Wu Liang^{1, 2
,},
Li Feng^{1, 2, 4},
Lu Wenbo³,
Chen Ming³,
Xu Feng^{1, 2}

1.
College of Science, Wuhan University of Science and Technology, Wuhan 430065, Hubei, China
2.
Blasting Technology Research Center, CRPCE-WUST, Wuhan 430065, Hubei, China
3.
State Key Laboratory of Water Resource and Hydropower Engineering Science, Wuhan University, Wuhan 430072, Hubei, China
4.
Guizhou Xinlian Blasting Engineering Group Co Ltd, Guiyang 550002, Guizhou, China

摘要

摘要: 爆炸荷载下邻近既有层状围岩隧道的迎爆侧易发生开裂、破坏，确保既有隧道围岩在爆破扰动下的安全是隧道近接施工中的关键问题。基于弹性力学和结构力学原理，建立了既有层状围岩隧道迎爆侧最危险点的简化力学模型，得到了最危险点的应力计算表达式，分析了隧道半径与岩层厚度的比值、岩层的倾角、岩层所对应的圆心角和隧道埋深等因素对既有隧道围岩稳定性的影响规律，并依据岩体最大拉应力判据确定了既有层状隧道围岩稳定的质点临界振动速度，结合地震波传播时的衰减规律，可以得出爆破施工时的最大单响药量，从而为隧道近接爆破动力扰动施工提供理论依据。
- 围岩稳定 /
- 爆破 /
- 隧道 /
- 层状围岩 /
- 振动速度
Abstract: Under a blasting load, the front side adjacent to blasting in an existing tunnel surrounded by layered rocks is apt to be destroyed, and therefore it is of critical importance to keep the tunnel safe from the destructive effects of the surrounding rocks cracks and damages that occur in a blasting disturbance. In this work, based on elastic mechanics and structural mechanics, we established a simplified mechanical model for the most dangerous point of the tunnel s blasting side, and obtained the stress formula that can calculate the stress at this point. We also analyzed the regular influence of such different factors as the ratio of the tunnel radius to the thickness of layer, the inclination angle, the central angle and depth of the surrounding layered rocks on the stress. In addition, using the theory of the maximum tensile stress, we calculated the surrounding rocks‘ critical vibration velocity that ensures the stability of the tunnel and obtained, according to the attenuation patterns of seismic wave propagation, the maximum charge of detonation for the construction of a new tunnel.
- stability of surrounding rock /
- blasting /
- tunnel /
- layered rock /
- vibration velocity

HTML全文

图 1 隧道层状围岩受力示意图

Figure 1. Force diagram of layered rock surrounding the tunnel

下载: 全尺寸图片幻灯片

图 2 梁的受力情况

Figure 2. Stress analysis of beam

下载: 全尺寸图片幻灯片

图 3 解除右侧约束后梁的受力

Figure 3. Stress after removing constraint of right side

下载: 全尺寸图片幻灯片

图 4 岩层厚度与岩梁正应力关系曲线

Figure 4. Stress vs. the thickness of rock layer

下载: 全尺寸图片幻灯片

图 5 岩层倾角与岩梁正应力关系曲线

Figure 5. Stress vs. the angle of rock layer

下载: 全尺寸图片幻灯片

图 6 隧道半径与岩梁正应力关系曲线

Figure 6. Stress vs. tunnel radius

下载: 全尺寸图片幻灯片

图 7 覆盖层厚度与岩梁正应力关系曲线

Figure 7. Stress vs. the thickness of covering layer

下载: 全尺寸图片幻灯片

图 8 层状围岩所对应夹角与应力关系曲线

Figure 8. Stress vs. the corresponding angle of rock layer

下载: 全尺寸图片幻灯片

图 9 隧道半径和层状厚度比与岩梁正应力关系曲线

Figure 9. Stress vs. the ratio of tunnel radius to thickness

下载: 全尺寸图片幻灯片

参考文献(22)

[1]	张志强, 何本国, 关宝树.节理岩体隧道围岩稳定性判定指标合理性研究[J].现代隧道技术, 2012, 49(1):12-19. doi: 10.3969/j.issn.1009-6582.2012.01.003 Zhang Zhiqiang, He Benguo, Guan Baoshu. A study of the criterion for the stability of a tunnel in a jointed rock mass[J]. Modern Tunnelling Technology, 2012, 49(1):12-19. doi: 10.3969/j.issn.1009-6582.2012.01.003
[2]	胡文清, 郑颖人, 钟昌云.木寨岭隧道软弱围岩段施工方法及数值分析[J].地下空间, 2004, 24(2):194-197. doi: 10.3969/j.issn.1673-0836.2004.02.013 Hu Wenqing, Zheng Yingren, Zhong Changyun. Construction method and numerical analysis on Muzhailing tunnel[J]. Underground Space, 2004, 24(2):194-197. doi: 10.3969/j.issn.1673-0836.2004.02.013
[3]	张黎明, 郑颖人, 王在泉, 等.有限元强度折减法在公路隧道中的应用探讨[J].岩土力学, 2007, 28(1):97-101. doi: 10.3969/j.issn.1000-7598.2007.01.018 Zhang Liming, Zheng Yingren, Wang Zaiquan, et al. Application of strength reduction finite element method to road tunnels[J]. Rock and Soild Mechanics, 2007, 28(1):97-101. doi: 10.3969/j.issn.1000-7598.2007.01.018
[4]	郑颖人, 赵尚毅, 邓楚键, 等.有限元极限分析法发展及其在岩土工程中的应用[J].中国工程科学, 2006, 8(12):39-61. doi: 10.3969/j.issn.1009-1742.2006.12.005 Zheng Yingren, Zhao Shangyi, Deng Chujian, et al. Development of finite element limit analysis method and its application to geotechnical engineering[J]. Engineering Science, 2006, 8(12):39-61. doi: 10.3969/j.issn.1009-1742.2006.12.005
[5]	郑颖人, 邱陈瑜, 张红, 等.关于土体隧洞围岩稳定性分析方法的探索[J].岩石力学与工程学报, 2008, 27(10):1968-1980. doi: 10.3321/j.issn:1000-6915.2008.10.003 Zheng Yingren, Qiu Chenyu, Zhang Hong, et al. Exploration of stability analysis methods for surrounding rocks of soil tunnel[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(10):1968-1980. doi: 10.3321/j.issn:1000-6915.2008.10.003
[6]	郑颖人, 邱陈瑜, 宋雅坤, 等.土质隧洞围岩稳定性分析与设计计算方法探讨[J].后勤工程学院学报, 2009, 25(3): 1-9. http://d.old.wanfangdata.com.cn/Periodical/hqgcxyxb200903001 Zheng Yingren, Qiu Chenyu, Song Yakun, et al. Exploration of stability analysia and design calculation methods of surrounding rocks in soil tunnel[J]. Journal of Logistical Engineering University, 2009, 25(10):1-9. http://d.old.wanfangdata.com.cn/Periodical/hqgcxyxb200903001
[7]	郑颖人, 徐浩, 王成, 等.隧洞破坏机理及深浅埋分界标准[J].浙江大学学报, 2010, 44(10):1851-1856. doi: 10.3785/j.issn.1008-973X.2010.10.002 Zheng Yingren, Xu Hao, Wang Cheng, et al. Research on the failure mechanism of tunnel and dividing line standard between shallow and deep bury[J]. Journal of Zhejiang University, 2010, 44(10):1851-1856. doi: 10.3785/j.issn.1008-973X.2010.10.002
[8]	边克信.爆破地震对地下构筑物的影响[J].中国矿山工程, 1981, 1(6):25-36. http://www.cnki.com.cn/Article/CJFDTOTAL-YSKS198106008.htm Bian Kexin. Influence of blasting seismic on underground structure[J]. China Mine Engineering, 1981, 1(6):25-36. http://www.cnki.com.cn/Article/CJFDTOTAL-YSKS198106008.htm
[9]	朱瑞赓, 李铮.爆炸地震波的现场测量及其安全距离[J].爆炸与冲击, 1982, 2(1):60-67. http://www.bzycj.cn/CN/abstract/abstract11301.shtml Zhu Ruigeng, Li Zheng. In-situ measurements of blasting seismic waves and their safety distance[J]. Explosion and Shock Waves, 1982, 2(1):60-67. http://www.bzycj.cn/CN/abstract/abstract11301.shtml
[10]	Singh P K. Blast vibration damage to underground coal mines from adjacent open-pit blasting[J]. International Journal of Rock Mechanics and Mining Sciences, 2002, 39(8):959-973. doi: 10.1016/S1365-1609(02)00098-9
[11]	Torano J, Rodríguez R, Diego I, et al. FEM models including randomness and its application to the blasting vibrations prediction[J]. Computers and Geotechnics, 2006, 33(1):15-28. doi: 10.1016/j.compgeo.2006.01.003
[12]	刘国华, 王振宇.爆破荷载作用下隧道的动态响应与抗爆分析[J].浙江大学学报, 2004, 38(2):204-209. doi: 10.3785/j.issn.1008-973X.2004.02.017 Liu Guohua, Wang Zhenyu. Dynamic response and blast-resistance analysis of a tunnel subjected to blast loading[J]. Journal of Zhejiang University, 2004, 38(2):204-209. doi: 10.3785/j.issn.1008-973X.2004.02.017
[13]	阳生权.小线间距施工隧道爆破地震影响下既有隧道围岩线性动力分析[J].工程爆破, 1998, 4(1):1-6. http://d.old.wanfangdata.com.cn/Periodical/gcbp199801001 Yang Shengquan. Linear dynamic analysis on rock-media of old tunnel affected by blasting vibration of new tunnel with small line-clearance[J]. Engineering Blasting, 1998, 4(1):1-6. http://d.old.wanfangdata.com.cn/Periodical/gcbp199801001
[14]	张庆松, 李利平, 李术才, 等.小间距隧道爆破动力特性试验研究[J].岩土力学, 2008, 29(10):2655-2660. doi: 10.3969/j.issn.1000-7598.2008.10.012 Zhang Qingsong, Li Liping, Li Shucai, et al. Experimental study of blasting dynamic vibration of closely adjacent tunnel[J]. Rock and Soild Mechanics, 2008, 29(10):2655-2660. doi: 10.3969/j.issn.1000-7598.2008.10.012
[15]	王明年, 潘晓马, 张成满, 等.邻近隧道爆破振动响应研究[J].岩土力学, 2004, 25(3):412-414. doi: 10.3969/j.issn.1000-7598.2004.03.017 Wang Mingnian, Pan Xiaoma, Zhang Chengmam, et al. Study of blasting vibration influence on close-spaced tunnel[J]. Rock and Soild Mechanics, 2004, 25(3):412-414. doi: 10.3969/j.issn.1000-7598.2004.03.017
[16]	毕继红, 钟建辉.邻近隧道爆破震动对既有隧道影响的研究[J].工程爆破, 2004, 10(4):69-73. doi: 10.3969/j.issn.1006-7051.2004.04.017 Bi Jihong, Zhong Jianhui. Study on influence of blasting vibration from excavation of a new tunnel on existed tunnel[J]. Engineering Blasting, 2004, 10(4):69-73. doi: 10.3969/j.issn.1006-7051.2004.04.017
[17]	吴亮, 钟冬望.不同布置条件下邻近隧道掘进爆破对既有隧道的影响[J].煤炭学报, 2009, 34(10):1339-1343. doi: 10.3321/j.issn:0253-9993.2009.10.008 Wu Liang, Zhong Dongwang. Effect of tunneling blasting on the existing adjacent tunnel under different conditions[J]. Journal of China Coal Society, 2009, 34(10):1339-1343. doi: 10.3321/j.issn:0253-9993.2009.10.008
[18]	王新宇, 邵珠山, 乔汝佳.小净距下穿铁路隧道爆破震动的响应研究[J].应用力学学报, 2013, 30(4):527-532. http://d.old.wanfangdata.com.cn/Periodical/yylxxb201304012 Wang Xinyu, Shao Zhushan, Qiao Rujia. Study on the dynamic responses of blasting vibration on undercrossing railway tunnel with small distance[J]. Chinese Journal of Applied Mechanics, 2013, 30(4):527-532. http://d.old.wanfangdata.com.cn/Periodical/yylxxb201304012
[19]	苏永贵, 赵跃堂.爆炸长波作用拱形坑道在不同侧压力系数下的应力与破坏分析[J].国防交通工程与技术, 2015, 13(1):50-53. http://d.old.wanfangdata.com.cn/Periodical/gfjtgcyjs201501013 Su Yonggui, Zhao Yuetang. A stress-and-failure analysis of an arched tunnel under the action of the long-wave explosion with different lateral-pressure coefficients[J]. Traffic Engineering and Technology for National Defence, 2015, 13(1):50-53. http://d.old.wanfangdata.com.cn/Periodical/gfjtgcyjs201501013
[20]	徐芝纶.弹性力学[M].北京:高等教育出版社, 2006:41-45.
[21]	李廉锟.结构力学[M].北京:高等教育出版社, 2004:130-132.
[22]	徐颖, 陈建平, 左昌群.武当群片岩隧道剪切型纵向裂缝破坏机理[J].中南大学学报(自然科学版), 2013, 44(7):2950-2957. http://d.old.wanfangdata.com.cn/Periodical/zngydxxb201307044 Xu Ying, Chen Jianpping, Zuo Cangqun. Shear type longitudinal cracks failure mechanism in Wudang group of schist tunnel[J]. Journal of Central South University (Science Edition), 2013, 44(7):2950-2957. http://d.old.wanfangdata.com.cn/Periodical/zngydxxb201307044