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基于滚刀破岩特性的岩石顶管迎面阻力计算模型

徐天硕 王乐 刘锴鑫 周雨恒 马保松 张鹏

徐天硕, 王乐, 刘锴鑫, 周雨恒, 马保松, 张鹏. 基于滚刀破岩特性的岩石顶管迎面阻力计算模型[J]. 地质科技通报, 2022, 41(4): 259-265. doi: 10.19509/j.cnki.dzkq.2022.0038
引用本文: 徐天硕, 王乐, 刘锴鑫, 周雨恒, 马保松, 张鹏. 基于滚刀破岩特性的岩石顶管迎面阻力计算模型[J]. 地质科技通报, 2022, 41(4): 259-265. doi: 10.19509/j.cnki.dzkq.2022.0038
Xu Tianshuo, Wang Le, Liu Kaixin, Zhou Yuheng, Ma Baosong, Zhang Peng. A calculation model for the head-on resistance of rock pipe jacking based on the rock breaking characteristics of the disc cutter[J]. Bulletin of Geological Science and Technology, 2022, 41(4): 259-265. doi: 10.19509/j.cnki.dzkq.2022.0038
Citation: Xu Tianshuo, Wang Le, Liu Kaixin, Zhou Yuheng, Ma Baosong, Zhang Peng. A calculation model for the head-on resistance of rock pipe jacking based on the rock breaking characteristics of the disc cutter[J]. Bulletin of Geological Science and Technology, 2022, 41(4): 259-265. doi: 10.19509/j.cnki.dzkq.2022.0038

基于滚刀破岩特性的岩石顶管迎面阻力计算模型

doi: 10.19509/j.cnki.dzkq.2022.0038
详细信息
    作者简介:

    徐天硕(1995-), 男, 现正攻读土木工程专业博士学位, 主要从事非开挖和管道工程等领域的工作。E-mail: 458256176@qq.com

    通讯作者:

    张鹏(1988-), 男, 副教授, 主要从事非开挖领域的教学和科研工作。E-mail: cugpengzhang@163.com

  • 中图分类号: TU452

A calculation model for the head-on resistance of rock pipe jacking based on the rock breaking characteristics of the disc cutter

  • 摘要:

    顶进力是顶管工程设计和施工中最重要的参数之一, 顶进力计算的精确性将直接影响顶管的工程的成败。随着顶管施工工艺越来越多的应用于岩石地层, 但鲜有关于岩石地层中顶管顶进力的计算模型。为了更加准确地计算岩石地层中的迎面阻力, 假设掌子面稳定, 通过分析岩石顶管机刀盘滚刀破岩机理、受力模型和影响规律, 在此基础上推导出岩石地层顶管迎面阻力计算公式。结果表明: 岩石顶管中, 岩石抗压强度和抗剪强度以及顶管机滚刀切入深度直接决定了迎面阻力的大小, 实测迎面阻力除个别点在计算值上下限以外, 其余与公式预测值相一致, 证明其具有适用性。

     

  • 图 1  相邻滚刀破岩机理

    Figure 1.  Rock breaking mechanism of adjacent cutters

    图 2  岩石顶管机刀盘破岩机理

    Figure 2.  Rock breaking mechanism of Cutterhead of pipe jacking machine

    图 3  Evans预测公式

    Figure 3.  Evans prediction formula

    图 4  秋三藤三郎预测公式

    Figure 4.  Akimito Saburo prediction formula

    图 5  滚刀受力模型

    Figure 5.  Force model of disc cutter

    图 6  切入岩石示意图

    Figure 6.  Schematic diagram of rock cutting

    图 7  垂直切入破岩面积

    Figure 7.  Area of broken rock area

    图 8  滚刀侧向力示意图

    Figure 8.  Side force of the disc cutter

    图 9  青云河顶管工程迎面阻力对比曲线

    Figure 9.  Comparison curves of head-on resistance of Qingyunhe pipe jacking project

    表  1  青云河顶管工程参数表

    Table  1.   Buried depth of pipes and corresponding formation parameters of the Qingyunhe pipe jacking project

    里程/m 管道埋深/m 岩石单抗压强度下限/MPa 岩石单轴抗压强度上限/MPa 岩石单轴抗压强度平均值/MPa
    26.01 10.02 37.2 43.8 41.23
    106.17 15.15 38.5 46.6 42.70
    164.64 12.24 34.7 65.9 40.88
    318.29 7.33 48.8 62.6 54.97
    425.37 10.16 30.2 50.5 41.70
    448.63 8.08 30.8 31.4 31.10
    494.41 5.98 44.2 44.2 44.20
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-08-12
  • 网络出版日期:  2022-09-07

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