中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2008, Vol. 27 ›› Issue (6): 1108-1111,1163.

• • 上一篇    下一篇

煤系地层公路高切坡稳定性评价

崔志波1,2, 曹卫文2, 唐红梅2   

  1. 1. 驻马店宇畅路桥养护工程有限公司, 河南 驻马店 463000;
    2. 重庆交通大学 岩土工程研究所, 重庆 400074
  • 收稿日期:2008-06-05 出版日期:2008-12-20 发布日期:2016-11-07
  • 作者简介:崔志波(1969-),男,河南驻马店人,高级工程师,硕士,现从事公路养护方面的研究工作。
  • 基金资助:
    国家自然科学基金项目(50678182);重庆市交委科技攻关项目(CQJ20060101)

Stability Evaluation of High-Cutting Coal Measure Slope along Highway

CUI Zhi-bo1,2, CAO Wei-wen2, TANG Hong-mei2   

  1. 1. Zhu Madian Yuchang Road & Bridge Maintenance Engineering Co. Ltd, Henan Zhumadian 463000, China;
    2. Institute of Geotechnical Engineering, Chongqing Jiaotong University, Chongqing 400074, China
  • Received:2008-06-05 Online:2008-12-20 Published:2016-11-07

摘要: 在山区修建公路不可避免地需要进行高切深挖,往往会形成大量的高切坡,边坡岩体原有应力平衡被打破,为高切坡的失稳创造了地质条件。以两巫公路(巫山及巫溪)K 90+310~K 90+370段煤系高切坡为研究对象,利用赤平极射投影法、有限元ANSYS法对高切坡整体和局部稳定性做出了评价。研究表明,坡体主控结构面对岩质高切坡的整体稳定性起控制作用;煤夹层对岩质高切坡的局部稳定性起控制作用。建议采用锚杆喷射混凝土-挂网来加固坡体整体,用锚索-格构梁和劈裂注浆联合法来加固坡体局部。

关键词: 煤系地层, 高切坡, 赤平极射投影, 有限元, 稳定性评价

Abstract: High-cutting slopes have to be employed during highway construction in mountainous area,which will always break the original balance of the rock stresses.These impose more geological risk to the high-cutting slopes' stability.Taking the high-cutting coal measure rock slope at Wushan-Wuxi road from K 90+310 to K 90+370 as the research object,the evaluation of the whole and part stability of this slope is made out by stereographic polar projection method and finite element method.The result shows that the dominant rock fracture influences the slope's integer stability,whereas the coal measure influences part stability.The system combined with bolting and shotcrete gun is proposed to strengthen the integer high-cutting slope,and the system composed of anchor-cable,lattice beam and fracturing grouting is proposed to strengthen the part high-cutting slope.

Key words: coal measure, high-cutting slope, stereographic polar projection, finite element method, stability evaluation

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