贯穿裂隙岩体锚固方向优化的模型研究

韩建新 李术才 李树忱 仝兴华 汪 雷

doi:10.6052/j.issn.1000-4750.2011.04.0247

贯穿裂隙岩体锚固方向优化的模型研究

韩建新李术才李树忱仝兴华汪雷

(1. 山东大学岩土与结构工程研究中心，济南 250061；2. 山东财政学院统计与数理学院，济南 250014)

基金项目: 国家重点基础研究发展计划(973)项目(2010CB732002)；国家自然科学基金项目(51179098)；山东省自然科学基金项目(2009ZRB02285)；山东大学自由探索项目(2010TS038)

详细信息

中图分类号: TU45
计量
- 文章访问数: 1540
- HTML全文浏览量: 27
- PDF下载量: 391
出版历程
- 收稿日期: 2011-04-24
- 修回日期: 2011-09-03
- 刊出日期: 2012-12-23

THE MODEL STUDY ON OPTIMIZATION OF BOLTING DIRECTION OF ROCK MASS WITH PERSISTENT CRACKS

HAN Jian-xin

(1. Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan 250061, China; 2. School of Statistics and Mathematics, Shandong Finance University, Jinan 250014, China)

摘要

摘要: 隧道等地下工程开挖后，围岩会产生许多贯穿裂隙，为保持围岩的稳定，通常需要对围岩进行锚杆加固，而锚固方法的好坏对锚固效果有着直接影响。基于库仑强度准则，利用坐标面上的岩石和裂隙面强度曲线的位置关系，建立了贯穿裂隙岩体强度和破坏方式的确定方法。在此基础上，以锚固后岩体的抗压强度为目标函数，以锚固角度为变量，建立了锚固后贯穿裂隙岩体的抗压强度与锚杆安装角度之间的函数关系，得出了贯穿裂隙岩体抗压强度最大时的锚固角度，提出了贯穿裂隙岩体锚固方向优化的基本方法。
- 贯穿裂隙岩体 /
- 锚固方向 /
- 优化 /
- 模型 /
- 强度
Abstract: After excavation of underground engineering such as tunnels and so on, the surrounding rock mass generates a lot of persistent cracks. In order to maintain the stability of surrounding rock, the rock bolt reinforcement is usually carried out and the anchoring method has a direct impact on the anchoring effect. Based on a Coulomb strength criterion, the identification method of strength and failure mode of rock mass was established by comparing the location relation of a strength curve of rock and cracks in the coordinate system. On the above basis, regarding the compressive strength of the anchoring rock as an objective function and bolting angle as the variable, the functional relationship of compressive strength of the anchoring rock mass with persistent cracks and bolting angle was set up. Thusly the bolting angle was obtained when the compressive strength achieved the maximum. And the fundamental method was presented to optimize the anchoring direction of rock mass with persistent cracks.
- rock mass with persistent cracks /
- anchoring direction /
- optimization /
- model /
- strength

HTML全文

参考文献(18)

[1]	Osgouia R R, ünalb E. An empirical method for design of grouted bolts in rock tunnels based on the Geological Strength Index (GSI) [J]. Engineering Geology, 2009, 107(3/4): 154―166.
[2]	Bjurstrom S. Shear strength of hard rock joints reinforced by grouted intentioned bolts [C]. 3rd ISRM Congress, Denver, USA , 1974: 1194―1199.
[3]	Hibino S, Motijama M. Effects of rock bolting in jointly rock [C]. International Symposium on Weak Rock, Tokyo, Japan, 1981: 1057―1062.
[4]	Grasselli G. 3D behaviour of bolted rock joints: Experimental and numerical study [J] International Journal of Rock Mechanics & Mining Sciences, 2005, 42(1): 13―24.
[5]	邓少军, 阳军生. 水平互层岩体隧道锚杆支护参数优化研究[J]. 中国科技信息, 2010(8): 61―65. Deng Shaojun, Yang Junsheng. Study of bolting parameter optimization of tunnel with level of alternating layers of rock mass [J]. China Science and Technology Information, 2010(8): 61―65. (in Chinese)
[6]	郭院成, 王立明. 基于位移控制的单支点桩锚支护结构的优化设计[J]. 郑州大学学报(工学版), 2004, 25(4): 4―7. Guo Yuancheng, Wang Liming. The optimization based on the displacement controlling on single fulcrum pile anchor retaining structure [J]. Journal of Zhengzhou University (Engineering Science), 2004, 25(4): 4―7. (in Chinese)
[7]	梅钢, 徐能熊. 深基坑桩锚支护结构优化设计方法及系统研制[J]. 郑州大学学报(工学版), 2008, 29(4): 124―128. Mei Gang, Xu Nengxiong. Optimization method and program developing of pile anchor retaining structure in deep foundation pit [J]. Journal of Zhengzhou University (Engineering Science), 2008, 29(4): 124―128. (in Chinese)
[8]	林杭, 曹平, 陈惠磊. 基于AHP方法的锚杆支护方案优化[J]. 山西建筑, 2006, 32(3): 99―100. Lin Hang, Cao Ping, Chen Huilei. Optimization design of scheme for anchor rods reinforcement by AHP method [J]. Shanxi Architecture, 2006, 32(3): 99―100. (in Chinese)
[9]	侯朝炯, 勾攀峰. 巷道锚杆支护围岩强度强化机理研究[J]. 岩石力学与工程学报, 2000, 19(3): 342―345. Hou Chaojiong, Gou Panfeng. Mechanism study on strength enhancement for the rocks surrounding roadway supported by bolt [J]. Chinese Journal of Rock Mechanics and Engineering, 2000, 19(3): 342―345. (in Chinese)
[10]	杨双锁. 煤矿回采巷道围岩控制理论探讨[J]. 煤炭学报, 2010, 35(11): 1842―1853. Yang Shuangsuo. Study on the surrounding rock control theory of roadway in coalmine [J]. Journal of China Coal Society, 2010, 35(11): 1842―1853. (in Chinese)
[11]	Hoek R E, Brown E T. Empirical strength criterion for rock masses [J]. Journal of the Geotechnical Engineering Division, ASCE, 1980, 106(9): 1013―1035.
[12]	Brown E T. Strength of models of rock with intermittent joints [J]. Journal of the Soil Mechanics and Foundations Division, ASCE, 1970, 96: 1935―1959.
[13]	Brown E T, Trollope D H. strength of model of jointed rock [J]. Journal of the Soil Mechanics and Foundations Division, ASCE, 1970, 96: 685―704.
[14]	Reik G, Zacas M. Strength and deformation characteristic of jointed media in true triaxial compression [J]. International Journal of Rock Mechanics and Mining Science & Geomechanics Abstracts, 1978, 15: 295―303.
[15]	Rosenblad J L. Failures modes of models of jointed rock masses [C]//Proceedings of the 2nd Congress of ISRM, Beograd, 1970: 3―11.
[16]	宋选民, 顾铁凤, 柳崇伟. 受贯通裂隙控制岩体巷道稳定性试验研究[J]. 岩石力学与工程学报, 2002, 21(12): 1781―1785. Song Xuanmin, Gu Tiefeng, Liu Chongwei. Experiment study on roadways stability in rock mass with connected fissures [J]. Chinese Journal of Rock Mechanics and Engineering, 2002, 21(12): 1781―1785. (in Chinese)
[17]	蔡美峰. 岩石力学与工程[M]. 北京: 科学出版社, 2002: 104―109. Cai Meifeng. Rock mechanics and engineering [M]. Beijing: Science Press, 2002: 104―109. (in Chinese)
[18]	郑颖人, 孔亮. 岩土塑性力学[M]. 北京: 中国建筑工业出版社, 2010: 95―99. Zheng Yingren, Kong Liang. Geotechnical plastic mechanics [M]. Beijing: China Architecture Industry Press, 2010: 95―99. (in Chinese)

施引文献

资源附件(0)

计量

文章访问数: 1540
HTML全文浏览量: 27
PDF下载量: 391
被引次数: 0

贯穿裂隙岩体锚固方向优化的模型研究

计量

出版历程

THE MODEL STUDY ON OPTIMIZATION OF BOLTING DIRECTION OF ROCK MASS WITH PERSISTENT CRACKS

计量

出版历程

目录