4/6/2025, 3:29:53 PM 星期日
Home > Archive>Volume 50, Issue 5, 2023 >18-22. DOI:10.12143/j.ztgc.2023.05.003
PDF HTML XML Export Cite reminder
Calculation method for crack surge pressure of perilous rock under the blasting load
CSTR:
[cstr]
Author:
Affiliation:

1.2nd Engineering Investigation Institute， Guizhou Bureau of Geology and Mineral, Zunyi Guizhou 563000, China;2.Institute of Exploration Technology, CAGS, Chengdu Sichuan 611734, China;3.Technology Innovation Center for Risk Prevention and Mitigation of Geohazard, MNR, Chengdu Sichuan 611734, China

Clc Number:

P642.2

  • Article
    • | |
  • Metrics
    • |
  • Reference [15]
    • |
  • Related [20]
    • | | |
  • Comments
    Abstract:

    Based on the consideration of crack surge pressure of perilous rock under the blasting load， physical model of crack surge pressure of unstable rock was established. The formation of crack surge pressure is attributed to the initial velocity exerting to crack water by the blasting power. Through theoretical derivation formula of dynamic water impact pressure perpendicular to dominant fissure and increasing amplitude of crack pressure along the fissure direction were determined. Lastly， this paper gave the calculation expression of crack surge pressure under the blasting load. Taking the perilous rock W2-1 in Wangxia for example， action time to crack water was 0.2~0.25s by the blasting power； crack pressure changed nearly 10% by the blasting power which affected the crack surge pressure markedly.

    Reference
    [1] 唐红梅，陈洪凯.危岩裂隙水压力修正计算方法[J].中国地质灾害与防治学报，2008，19（4）：86-90.TANG Hongmei， CHEN Hongkai. Revised method of water pressure in control fissure of perilous rockmass [J]. 2008，19（4）：86-90.
    [2] 陈洪凯，唐红梅，王林峰，等.危岩崩塌演化理论及应用[M].北京：科学出版社，2009.CHEN Hongkai， TANG Hongmei， WANG Linfeng， et al. Unstable Rock Collapse’S Evolution Theory and Application[M]. Beijing： Science Press， 2009.
    [3] Chen Hongkai， Tang Hongmei， Ye Siqiao. Damage model of control fissure in perilous rock[J]. Applied Mathematics and Mechanics， 2006，7（27）：967-974.
    [4] DB 50/5029—2004，地质灾害防治工程设计规范[S].DB 50/5029—2004， Design standard of geological disaster prevention and control[S].
    [5] DB 50/143—2003，地质灾害防治工程勘察规范[S].DB 50/143—2003， Survey standard of geological disaster prevention and control[S].
    [6] 罗声，许模，康小兵.考虑动水冲击压力的裂隙岩体裂纹扩展机理研究及应用[J].南水北调与水利科技，2015，13（4）：726-728.LUO Sheng， XU Mo， KANG Xiaobing. Research on crack expanding mechanism of fractured rock tunnel with surge pressure[J]. South-to-North Water Transfers and Water Science & Technology， 2015，13（4）：726-728.
    [7] 柴军瑞.考虑渗透动水冲击压力时等效连续岩体渗流场与应力场耦合分析的数学模型[J].工程科学与技术，2001，33（6）：14-17.CHAI Junrui. Mathematical model for coupled seepage and stress fields in rock mass of equivalent continuum by considering surge seepage pressure[J]. Advanced Engineering Sciences， 2001，33（6）：14-17.
    [8] 梁尧篪.裂隙岩体中的渗流与岩体变形[J].岩土力学，1988，9（3）：53-58.LIANG Yaochi. Seepage and deformation of fractured rock mass[J]. Rock and Soil Mechanics， 1988，9（3）：53-58.
    [9] 汤连生，张鹏程，王洋.水作用下岩体断裂强度探讨[J].岩石力学与工程学报，2004，23（19）：3337-3341.TANG Liansheng， ZHANG Pengcheng， WANG Yang. On fracture strength of rocks with cracks under water action[J]. Chinese Journal of Rock Mechanics and Engineering， 2004，23（19）：3337-3341.
    [10] 张海波.动、静荷载作用下不同倾角裂隙岩体力学性能试验模拟研究[D].南京：河海大学，2007.ZHANG Haibo. Experimental research on mechanical characteristics of fractured rock mass with different inclined angle under dynamic and static loads[D]. Nanjing： Hohai University， 2007.
    [11] SL 378—2007，水工建筑物地下开挖工程施工规范[S].SL 378—2007， Construction specifications on underground excavation engineering of hydraulic structures[S].
    [12] 陈洪凯，周云涛，唐红梅.基于时程分析的滑塌式危岩清除爆破动力稳定性计算方法[J].振动与冲击，2014，33（15）：31-34.CHEN Hongkai， ZHOU Yuntao， TANG Hongmei. Dynamic stability calculation method of unstable sliding rock under excavation blasting based on the time history analysis[J]. Journal of Vibration and Shock， 2014，33（15）：31-34.
    [13] 钟冬望，吴亮，韩芳，等.爆破载荷下岩质边坡动力响应及控制[M].科学出版社，2011.ZHONG Dongwang， WU Liang， HAN Fang， et al. Dynamic response and control of rock slope under blasting load[M]. Science Press， 2011.
    [14] 王玉杰，陈先锋，彭天浩.浅析岩石夹层对爆破效果的影响[J].岩石力学与工程学报，2004，23（8）：1385-1387.WANG Yujie， CHEN Xianfeng， PENG Tianhao. Analysis on influence of rock interlayer on blasting[J]. Chinese Journal of Rock Mechanics and Engineering， 2004，23（8）：1385-1387.
    [15] 苗高建，周传波，张志华，等.三峡库区望霞危岩体削方爆破振动测试分析[J].爆破，2012，29（3）：131-134.MIAO Gaojian， ZHOU Chuanbo， ZHANG Zhihua， et al. Vibration measurement and analysis of Wangxia dangerous rock mass blasting in Three Gorges Reservoir[J]. Blasting， 2012，29（3）：131-134.
    Cited by
    Comments
    Comments
    分享到微博
    Submit
Get Citation

Copy
Share
Article Metrics
  • Abstract:396
  • PDF: 1171
  • HTML: 971
  • Cited by: 0
History
  • Received:July 03,2023
  • Revised:September 07,2023
  • Adopted:September 07,2023
  • Online: November 02,2023
  • Published: September 10,2023
Article QR Code
Today's visits：1894 Total visits：156001   津ICP备19010518号-1  

津公网安备12011002024030号
Address：No.77 Jinguang District, Langfang City, Hebei Province Post Code：065000 Phone：0316-2096324
URL：http://www.tkgc.net/ E-mail：tkgc@mail.cgs.gov.cn
Drilling Engineering ® 2025 All Rights ReservedSupported by:Beijing E-Tiller Technology Development Co., Ltd.