-
摘要:
现有公路（铁路）工程中的高陡岩质边坡，特别是风化作用强烈地区的岩质边坡，浅表层岩体多呈碎裂状。采用传统SNS主动防护网加固后，仍经常产生局部失稳、掉块等现象，部分甚至引起整体失稳。因此，针对破碎岩质边坡的加固防护迫切需要进行结构及其设计方法改进。本文提出一种锚墩式主动防护网新型组合结构及其受力计算和设计方法，可有效防止碎裂岩质边坡坡面破坏，同时保证边坡整体稳定。工程应用表明，该组合防护结构具有良好的破碎岩质边坡加固效果，值得在工程建设中推广应用。
Abstract:The shallow surface rock mass of the high and steep rock slopes in the existing highway (railway) projects, especially with severe weathering slope rock mass, is mostly cataclastic. After the traditional SNS active protective net is adopted to reinforce the slope, the rock slope has been locally unstable or subject to overall instability. Therefore, it is necessary to improve the structure and the corresponding design method for the reinforcement and protection of cataclastic rock slope. A new type of combination structure of anchor-pier active protection net as well as the stress calculation and design method is put forward, which can effectively prevent the destruction of cataclastic rock slope surface and ensure the overall stability of the slope. It can be seen from the engineering application that the combined protective structure has good reinforcing effect on the cataclastic rock slope, and it could be applied in the engineering construction.
-
Key words:
- fractured rock slope /
- anchorage pier /
- active protection net /
- design method
-
-
[1] 阳友奎, 周迎庆, 姜瑞琪, 等. 坡面地质灾害柔性防护的理论与实践[M]. 北京: 科学出版社, 2005.
YANG Youkui, ZHOU Yingqing, JIANG Ruiqi, et al. The theory and practice of flexible protection for the geological hazard of slope[M]. Beijing: Science Press, 2005. (in Chinese)
[2] 谢洪波, 刘正疆, 文广超, 等. 四川金川-小金公路沿线滑坡、崩塌影响因素分析[J]. 中国地质灾害与防治学报,2021,32(1):10 − 17. [XIE Hongbo, LIU Zhengjiang, WEN Guangchao, et al. Influencing factors of landslide sand rockfalls along the Jinchuan-Xiaojin highway in Sichuan[J]. The Chinese Journal of Geological Hazard and Control,2021,32(1):10 − 17. (in Chinese with English abstract)
[3] 胡朝旭. 汶川-马尔康高速公路高陡边坡地质灾害调查及防治[J]. 公路,2018,63(9):62 − 67. [HU Chaoxu. Investigation and prevention of geological hazards for high-steep slope of the Wenchuan to Maerkang expressway[J]. Highway,2018,63(9):62 − 67. (in Chinese with English abstract)
[4] 陈全明, 方琼, 罗冠枝, 等. 缓倾顺层岩质斜坡破坏条件和变形机制分析: 以常吉高速公路朱雀洞滑坡为例[J]. 中国地质灾害与防治学报,2020,31(2):18 − 23. [CHEN Quanming, FANG Qiong, LUO Guanzhi, et al. Failure conditions and mechanism of the gentle dip bedding slopes: a case study of the Zhuquedong Landslide[J]. The Chinese Journal of Geological Hazard and Control,2020,31(2):18 − 23. (in Chinese with English abstract)
[5] 贺凯, 高杨, 殷跃平, 等. 基于岩体损伤的大型高陡危岩稳定性评价方法[J]. 水文地质工程地质,2020,47(4):82 − 89. [HE Kai, GAO Yang, YIN Yueping, et al. Stability assessment methods for huge high-steep unstable rock mass based on damage theory[J]. Hydrogeology & Engineering Geology,2020,47(4):82 − 89. (in Chinese with English abstract)
[6] 孙伟峰. 永吉高速沿线破碎岩质边坡锚杆支护方式研究[J]. 公路工程,2017,42(4):271 − 274. [SUN Weifeng. Study on bolt support patterns of fractured rock slope in Yong-Ji expressway[J]. Highway Engineering,2017,42(4):271 − 274. (in Chinese with English abstract) doi: 10.3969/j.issn.1674-0610.2017.04.055
[7] 张科, 侯杰. 岩质边坡复合型破坏机制的改进运动单元法研究[J]. 水文地质工程地质,2020,47(2):95 − 101. [ZHANG Ke, HOU Jie. Investigation on combined failure mechanism of rock slope based on the improved kinematical element method[J]. Hydrogeology & Engineering Geology,2020,47(2):95 − 101. (in Chinese with English abstract)
[8] 罗洪成, 梁邦伟, 黄成伟, 等. 富水破碎岩质边坡滑塌成因分析及关键处治技术[J]. 施工技术,2018,47(9):105 − 108. [LUO Hongcheng, LIANG Bangwei, HUANG Chengwei, et al. The genetic analysis and key treatment technology for the slope slump of water-rich broken rock masses[J]. Construction Technology,2018,47(9):105 − 108. (in Chinese with English abstract)
[9] 张广甫, 吴琦, 崔孝飞, 等. 危岩主控结构面抗剪强度参数取值研究[J]. 水利与建筑工程学报,2018,16(1):164 − 167. [ZHANG Guangfu, WU Qi, CUI Xiaofei, et al. Shear strength parameters determination of structural planes controlling the rock block stability[J]. Journal of Water Resources and Architectural Engineering,2018,16(1):164 − 167. (in Chinese with English abstract) doi: 10.3969/j.issn.1672-1144.2018.01.029
[10] 严豪, 宋彦辉, 陈子玉. 基于Voronoi节理模型的碎裂岩边坡稳定性分析[J]. 中国地质灾害与防治学报,2018,29(1):34 − 39. [YAN Hao, SONG Yanhui, CHEN Ziyu. Stability analysis of broken rock slope based on Voronoi joint net model[J]. The Chinese Journal of Geological Hazard and Control,2018,29(1):34 − 39. (in Chinese with English abstract)
[11] 徐前卫, 朱合华, 丁文其, 等. 软弱破碎直立岩质边坡渐进性破坏及其锚固效应的模型试验研究[J]. 土木工程学报,2012,45(4):139 − 147. [XU Qianwei, ZHU Hehua, DING Wenqi, et al. Model test study on the progressive failure of weak and fractured vertical rock slopes and the effect of anchoring[J]. China Civil Engineering Journal,2012,45(4):139 − 147. (in Chinese with English abstract)
[12] 霍宇翔, 黄润秋, 巨能攀, 等. 碎裂结构边坡变形机理及治理对策研究[J]. 工程地质学报,2009,17(3):317 − 321. [HUO Yuxiang, HUANG Runqiu, JU Nengpan, et al. Deformation mechanism and stabilization measures of broken granitic rock slope that experienced Wenchuan earthquake[J]. Journal of Engineering Geology,2009,17(3):317 − 321. (in Chinese with English abstract) doi: 10.3969/j.issn.1004-9665.2009.03.006
[13] 曹兴松. 碎裂岩体路堑高边坡失稳机理及防治技术研究[D]. 成都: 西南交通大学, 2006.
CAO Xingsong. Research on instability mechanism and controlling techniques for cutting high slope in disintegration rock mass[D]. Chengdu: Southwest Jiaotong University, 2006. (in Chinese with English abstract)
[14] 朱少瑞, 韩继欢, 秦哲, 等. 预应力锚索加固技术在高陡岩质边坡中的应用[J]. 煤炭技术,2015,34(8):30 − 32. [ZHU Shaorui, HAN Jihuan, QIN Zhe, et al. Application of prestressed anchor cable in srengthening steep rocky slop[J]. Coal Technology,2015,34(8):30 − 32. (in Chinese with English abstract)
[15] 刘瑞懿, 肖碧, 李洪斌, 等. 某岩质高边坡稳定性分析及预应力锚索加固设计[J]. 人民长江,2016,47(21):77 − 80. [LIU Ruiyi, XIAO Bi, LI Hongbin, et al. Stability analysis of a high rocky slope and its pre-stress anchorage cable design[J]. Yangtze River,2016,47(21):77 − 80. (in Chinese with English abstract)
[16] 吴兵, 梁瑶, 唐晓波, 等. 锚索与抗滑桩组合加固折线型滑面高边坡受力计算及优化设计[J]. 公路交通科技,2021,38(3):40 − 48. [WU Bing, LIANG Yao, TANG Xiaobo, et al. Force calculation and optimal design for high slope with broken-line sliding surface reinforced by combination of anchor cable and anti-slide pile[J]. Journal of Highway and Transportation Research and Development,2021,38(3):40 − 48. (in Chinese with English abstract)
[17] 吴国庆, 俞弘志, 黄刚. SNS柔性主动防护网在赛白高速公路上的应用[J]. 公路,2013,58(1):242 − 246. [WU Guoqing, YU Hongzhi, HUANG Gang. Application of safety netting system to Sai-bai expressway[J]. Highway,2013,58(1):242 − 246. (in Chinese with English abstract) doi: 10.3969/j.issn.0451-0712.2013.01.050
[18] 赵雅娜, 齐欣, 余志祥, 等. 主被动混合式柔性防护网联合作用效果初步分析[J]. 中国地质灾害与防治学报,2016,27(1):111 − 116. [ZHAO Yana, QI Xin, YU Zhixiang, et al. Preliminary study of hybrid flexible rockfall protection net[J]. The Chinese Journal of Geological Hazard and Control,2016,27(1):111 − 116. (in Chinese with English abstract)
[19] 潘勤学, 查旭东, 杨博. 岩质路堑边坡柔性支护系统防护性能分析[J]. 中外公路,2014,34(5):19 − 22. [PAN Qinxue, ZHA Xudong, YANG Bo. Protection propterty of flexible supporting system for rock cutting slope[J]. Journal of China & Foreign Highway,2014,34(5):19 − 22. (in Chinese with English abstract) doi: 10.3969/j.issn.1671-2579.2014.05.005
[20] 汪敏, 石少卿, 阳友奎. 边坡主动防护网力学性能的试验与数值分析[J]. 土木建筑与环境工程,2011(增刊2):24 − 28. [WANG Min, SHI Shaoqing, YANG Youkui. Mechanical tests and numerical simulation research on the slope active protection nets[J]. Journal of Civil, Architectural& Environment Engineering,2011(Sup2):24 − 28. (in Chinese with English abstract)
[21] 吕庆, 孙红月, 尚岳全, 等. 预应力锚固作用下破碎岩质边坡表层压缩效应[J]. 浙江大学学报(工学版),2006,40(12):2168 − 2173. [LYU Qing, SUN Hongyue, SHANG Yuequan, et al. Surface compress effects of crush rock slope under prestressed cables anchorage forces[J]. Journal of Zhejiang University(Engineering Science),2006,40(12):2168 − 2173. (in Chinese with English abstract) doi: 10.3785/j.issn.1008-973X.2006.12.032
[22] 陈洪凯, 秦鑫, 唐红梅. 危岩带扶壁式拦石网计算方法及应用[J]. 重庆交通大学学报(自然科学版),2017,36(6):58 − 63. [CHEN Hongkai, QIN Xin, TANG Hongmei. Calculation method and its application of counterforted rock-fall barrier of dangerous rock zone[J]. Journal of Chongqing Jiaotong University (Natural Sciences),2017,36(6):58 − 63. (in Chinese with English abstract)
[23] 王鳌杰. 预应力锚索抗滑桩支挡结构在路基边坡防护中的应用研究[J]. 公路工程,2018,43(1):145 − 148. [WANG Aojie. Application of stabilizing piles with pre-stressed anchor cables retaining structure in subgrade slope protection[J]. Highway Engineering,2018,43(1):145 − 148. (in Chinese with English abstract)
[24] 魏淑艳, 吴碧中. 某公路高边坡稳定性分析及防护措施研究[J]. 公路工程,2018,43(6):274 − 277. [WEI Shuyan, WU Bizhong. Stability analysis and protective measures of a highway high slope[J]. Highway Engineering,2018,43(6):274 − 277. (in Chinese with English abstract)
[25] 屠义伟. 复杂地质条件下山区公路边坡稳定性评价及加固方法设计[J]. 公路工程,2018,43(1):169 − 174. [TU Yiwei. Stability evaluation and reinforcement method design of mountain highway slope under complex geological conditions[J]. Highway Engineering,2018,43(1):169 − 174. (in Chinese with English abstract)
-
下载:
图(10)
计量
- 文章访问数: 1373
- PDF下载数: 36
- 施引文献: 0