| 端锚预应力锚杆作用范围研究及其应用 |
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| 引用本文： | 赵国彦,刘立顺,董陇军,董蕾.端锚预应力锚杆作用范围研究及其应用[J].湖南科技大学学报(自然科学版),2010,25(1). |
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| 作者姓名： | 赵国彦 刘立顺 董陇军 董蕾 |
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| 作者单位： | 中南大学,资源与安全工程学院,湖南,长沙410083 |
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| 基金项目： | 国家重点基础研究发展规划(973)项目，中南大学研究生学位论文创新资助项目 |
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| 摘 要： | 为分析锚固体力学效应及端锚预应力锚杆作用范围,并用以优化支护参数,提供施工指导.在挤压加固理论的基础上,利用弹性力学分析方法,建立端锚预应力锚杆锚固范围计算模型.借助Mathematic数学处理软件求得锚固范围方程.在Matlab基础上分析锚固范围方程特性,得出锚固范围与有效锚固长度和有效预应力的关系.研究表明:锚固范围随有效锚固长度和有效预应力的增加而增大;在目前矿山常用有效锚固长度和有效预应力下,最优锚固间距位于0.6～1.4m之间;锚固外区呈锥体状,锥体底面直径为最优锚杆间距,锥体高为有效锚固长度的10%,锥体底边角在7°～29°之间.将锚固范围方程应用于新城金矿的预控顶支护,得到预控顶预应力树脂锚杆锚固范围,求得最优锚杆支护间距1.2m,支护百分比79.3%,锚固外区锥体高0.19m,底边角17.6°.
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| 关 键 词： | 采矿技术 预应力锚杆 锚固范围 最优锚杆间距 锚固外区 |
Research and its application on end anchoring-grouting prestressed anchor range |
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| ZHAO Guo-yan,LIU Li-shun,DONG Long-jun,DONG Lei.Research and its application on end anchoring-grouting prestressed anchor range[J].Journal of Hunan University of Science & Technology(Natural Science Editon),2010,25(1). |
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| Authors: | ZHAO Guo-yan LIU Li-shun DONG Long-jun DONG Lei |
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| Affiliation: | ZHAO Guo-yan,LIU Li-shun,DONG Long-jun,DONG Lei (School of Resources , Safety Engineering,Center South University,Changsha 410083,China) |
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| Abstract: | For analyzing the mechanical effect of anchoring body and the anchor range,and using it to optimize the support parameters and provide guidance for construction.The calculation model of anchor range was established based on the theory of extrusion and reinforcement,which by using the elastic mechanics analysis method,and the equations of the anchorage range were solved by the Mathematic.The anchorage range equations were analysed on the base of Matlab software,thus to obtain the relationship between the anc... |
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| Keywords: | mining technology prestressed anchor anchorage range optimum anchor space anchorage outer zone |
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