轮廓爆破下柱状节理岩体开裂过程的数值模拟

朱亮; 陈明; 卢文波; 严鹏

doi:10.11883/1001-1455(2015)04-0555-06

轮廓爆破下柱状节理岩体开裂过程的数值模拟

doi: 10.11883/1001-1455(2015)04-0555-06

朱亮^1,,
陈明^{1, 2, ,},
卢文波^{1, 2},
严鹏^{1, 2}

1.
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
2.
武汉大学水工岩石力学教育部重点实验室，湖北武汉 430072

基金项目: 国家自然科学基金项目(51279146)；国家重点基础研究发展计划(973计划)项目(2011CB013501)

详细信息

作者简介:
朱亮(1990-), 男, 硕士研究生

通讯作者:
陈明, whuchm@yahoo.com.cn

中图分类号: O383
计量
- 文章访问数: 2688
- HTML全文浏览量: 254
- PDF下载量: 611
- 被引次数: 0
出版历程
- 收稿日期: 2013-01-10
- 修回日期: 2014-05-06
- 刊出日期: 2015-07-25

Numerical simulation on the cracking process of columnar jointed rock masses in contour blasting

Zhu Liang^1
,,
Chen Ming^{1, 2
, ,},
Lu Wen-bo^{1, 2},
Yan Peng^{1, 2}

1.
State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, Hubei, China
2.
Key Laboratory of Rock Mechanics in Hydraulic Structural Engineering, Ministry of Education, Wuhan University, Wuhan 430072, Hubei, China

摘要

摘要: 以白鹤滩水电站柱状节理玄武岩为研究对象，根据现场的柱状节理分布统计资料生成数值模型，模拟边坡开挖轮廓爆破下柱状节理岩体的开裂过程。结果表明：轮廓爆破时，柱状节理面对岩体裂纹的发展起着导向和控制作用；爆炸荷载作用下炮孔周围的节理面首先张开，然后裂缝沿着炮孔连心线附近的节理面扩展，最后形成贯通的由大量柱状节理面连接而成的裂缝；预裂爆破条件下，预裂缝宽度先增大后减少，最后达到稳定的开度，而且预裂爆破在柱状节理岩体中产生的裂纹范围比光面爆破产生的大。
- 爆炸力学 /
- 开裂过程 /
- 轮廓爆破 /
- 岩体 /
- 柱状节理
Abstract: With Baihetan columnar joints basalt as the research object, numerical model is generated according to the local distribution statistics. Based on numerical analysis, the cracking process of columnar jointed rock masses with the slope excavated by contour blasting is simulated. The results show that the columnar joints control and lead the generation of cracking in contour blasting. The joints around the hole are firstly opened by the explosion load. Then they extend along the joints near the defiled line of holes. Finally the cracks formed by a large number of columnar joints are connected. The process of the width of pre-splitting crack is that it reduces to stabile opening after increases under the condition of pre-splitting blasting. And the range of cracks in pre-splitting blasting is larger than these in smooth blasting.
- mechanics of explosion /
- cracking process /
- contour blasting /
- rock /
- columnar joints

HTML全文

图 1 光面爆破数值模拟

Figure 1. Numerical simulation model of smooth blasting

下载: 全尺寸图片幻灯片

图 2 欲裂爆破数值模拟

Figure 2. Numerical simulation model of pre-splitting blasting

下载: 全尺寸图片幻灯片

图 3 爆破荷载曲线

Figure 3. The history of blasting load

下载: 全尺寸图片幻灯片

图 4 光面爆破裂纹发展过程

Figure 4. Developing process of cracks in smooth blasting

下载: 全尺寸图片幻灯片

图 5 预裂爆破裂纹发展过程

Figure 5. Developing process of cracks in presplitting blasting

下载: 全尺寸图片幻灯片

图 6 轮廓爆破细部图

Figure 6. Detail drawing of contour blasting

下载: 全尺寸图片幻灯片

图 7 光面爆破裂纹发展曲线

Figure 7. Developing curves of the crack in smooth blasting

下载: 全尺寸图片幻灯片

图 8 预裂爆破预裂缝发展曲线

Figure 8. Developing curves of precracking in presplitting blasting

下载: 全尺寸图片幻灯片

表 1 岩石力学参数

Table 1. Mechanical parameters of the rock

ρ/(kg·m^-3) E/GPa μ p_R/MPa α/(°) σ_s/MPa

2 800 60 0.2 0.9 45 5

下载: 导出CSV

表 2 节理面力学参数

Table 2. Mechanical parameters of the joint mass

K_n/GPa K_t/GPa α_i/(°) p_J/MPa σ_t/MPa

52.9 12.8 28 0.75 0.78

下载: 导出CSV

参考文献(15)

[1]	张倬元, 王士天, 王兰生.工程地质分析原理[M].北京: 地质出版社, 1994.
[2]	Mallet R. On the origin and mechanism of production of the prismatic(or columnar)structure of basalt[J]. Philosophical Magazine, 1875, 4(50): 122-135, 201-226. doi: 10.1080/14786447508641280
[3]	刘海宁, 王俊梅, 王思敬.白鹤滩柱状节理岩体真三轴模型试验研究[J].岩土力学, 2010, 31(1): 163-171. http://www.cnki.com.cn/article/cjfdtotal-ytlx2010s1028.htm Liu Hai-ning, Wang Jun-mei, Wang Si-jing. Experimental research of columnar jointed basalt with true apparatus at Baihetan Hydropower Station[J]. Rock and Soil Mechanics, 2010, 31(1): 163-171. http://www.cnki.com.cn/article/cjfdtotal-ytlx2010s1028.htm
[4]	石安池, 唐鸣发, 周其健.金沙江白鹤滩水电站柱状节理玄武岩岩体变形特性研究[J].岩石力学与工程学报, 2008, 27(10): 2079-2086. http://www.cnki.com.cn/Article/CJFDTotal-YSLX200810017.htm Shi An-chi, Tang Ming-fa, Zhou Qi-jian. Research of deformation characteristics of columnar jointed basalt at Baihetan Hydropower Station[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(10): 2079-2086. http://www.cnki.com.cn/Article/CJFDTotal-YSLX200810017.htm
[5]	徐卫亚, 郑文棠, 石安池.水利工程中的柱状节理岩体分类及质量评价[J].水利学报, 2011, 42(3): 262-279. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=slxb201103002 Xu Wei-ya, Zheng Wen-tang, Shi An-chi. Classification and quality assessment of irregular columnar jointed basaltic rock mass for hydraulic engineering[J]. Journal of Hydraulic Engineering, 2011, 42(3): 262-279. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=slxb201103002
[6]	徐卫亚, 郑文棠, 宁宇, 等.柱状节理坝基岩体三维各向异性数值分析[J].岩土力学, 2010, 31(3): 949-955. http://d.wanfangdata.com.cn/Periodical/ytlx201003048 Xu Wei-ya, Zheng Wen-tang, Ning Yu, et al. 3D anisotropic numerical analysis of rock mass with columnar for dam foundation[J]. Rock and Soil Mechanics, 2010, 31(3): 949-955. http://d.wanfangdata.com.cn/Periodical/ytlx201003048
[7]	朱珍德, 秦天昊, 王士宏.基于Cosserat理论的柱状节理岩体各向异性本构模型研究[J].岩石力学与工程学报, 2010, 29(2): 4068-4076. http://www.cqvip.com/QK/96026X/2010A02/35616589.html Zhu Zhen-de, Qin Tian-hao, Wang Shi-hong, et al. Study of anisotropic constitutive model of columnar jointed rock masses based on cosserat theory[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(2): 4068-4076. http://www.cqvip.com/QK/96026X/2010A02/35616589.html
[8]	Wang Z L, Konietky H. Modeling of blast-induced fractures in jointed rock masses[J]. Engineering Fracture Mechanics, 2009, 76: 1945-1955. doi: 10.1016/j.engfracmech.2009.05.004
[9]	刘红岩, 秦四清, 杨军.爆炸荷载下岩石破坏的数值流形方法模拟[J].爆炸与冲击, 2007, 27(1): 50-56. doi: 10.11883/1001-1455(2007)01-0050-07 Liu Hong-yan, Qin Si-qing, Yang Jun. Simulation of rock failure by numerical manifold method under blasting load[J]. Explosion and Sock Waves, 2007, 27(1): 50-56. doi: 10.11883/1001-1455(2007)01-0050-07
[10]	成艳.长白山第四纪玄武岩隧洞光面爆破研究[D].吉林: 吉林大学建设工程学院, 2012.
[11]	齐景嶽, 刘正雄.隧道现代爆破技术[M].北京: 中国铁道出版社, 1995.
[12]	Ding D, Zhu C. Estimaing amount of explosive for fracture plane control blasting with notched boreholes[J]. Transactions of NFsoc, 1993, 3(2): 18-21. http://www.cqvip.com/QK/85276X/199302/4001541744.html
[13]	邴凤山.中国水力发电年鉴2010[M].北京: 中国电力出版社, 2011.
[14]	朱道建, 杨林德, 蔡永昌.柱状节理岩体压缩破坏过程模拟及机制分析[J].岩石力学与工程学报, 2009, 28(4): 716-724. http://www.cnki.com.cn/Article/CJFDTotal-YSLX200904012.htm Zhu Dao-jian, Yang Lin-de, Cai Yong-chang. Simulation of compressive failure of columnar jointed rock mass and its failure mechanism analysis[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(4): 716-724. http://www.cnki.com.cn/Article/CJFDTotal-YSLX200904012.htm
[15]	金李, 卢文波, 陈明, 等.节理岩体的爆破松动机理[J].爆炸与冲击, 2009, 29(5): 274-280. doi: 10.11883/1001-1455(2009)05-0474-07 Jin Li, Lu Wen-bo, Chen Ming, et al. Mechanism of jointed rock loosing under blasting load[J]. Explosion and Shock Waves, 2009, 29(5): 274-280. doi: 10.11883/1001-1455(2009)05-0474-07