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下分层不同层位千米钻孔稳定性研究

石占山 梁冰 王岩 秦冰

石占山, 梁冰, 王岩, 秦冰. 下分层不同层位千米钻孔稳定性研究[J]. 应用数学和力学, 2017, 38(9): 1041-1052. doi: 10.21656/1000-0887.370234
引用本文: 石占山, 梁冰, 王岩, 秦冰. 下分层不同层位千米钻孔稳定性研究[J]. 应用数学和力学, 2017, 38(9): 1041-1052. doi: 10.21656/1000-0887.370234
SHI Zhan-shan, LIANG Bing, WANG Yan, QIN Bing. Study of Kilometer Drilling Stability at Different Strata Beneath the Floor[J]. Applied Mathematics and Mechanics, 2017, 38(9): 1041-1052. doi: 10.21656/1000-0887.370234
Citation: SHI Zhan-shan, LIANG Bing, WANG Yan, QIN Bing. Study of Kilometer Drilling Stability at Different Strata Beneath the Floor[J]. Applied Mathematics and Mechanics, 2017, 38(9): 1041-1052. doi: 10.21656/1000-0887.370234

下分层不同层位千米钻孔稳定性研究

doi: 10.21656/1000-0887.370234
基金项目: 国家重点研发计划(2016YFC0600704;2016YFC0801404)
详细信息
    作者简介:

    石占山(1989—),男,博士生(通讯作者. E-mail: shizhanshan@163.com).

  • 中图分类号: TD726

Study of Kilometer Drilling Stability at Different Strata Beneath the Floor

Funds: The National Key Research and Development Project of China(2016YFC0600704;2016YFC0801404)
  • 摘要: 抽采钻孔的稳定性影响到抽采工程效果的好坏.采动作用下,位于底板下方不同层位千米钻孔的加卸载路径不同.为得到采动作用对不同层位钻孔稳定性的影响,分析了底板不同层位钻孔加卸载路径,依据该路径,设计十种数值模拟计算方案,对底板钻孔在不同速率加卸载、变速加卸载两种方式下的破坏范围、孔壁位移进行了分析,得到了加卸载结束后各方案对应的塑性区分布范围及加卸载过程中孔壁位移曲线.依据数值计算得到的卸载速率与形变恢复滞后性的关系,建立了考虑卸载速率变化的钻孔周边切应力计算模型.研究结果表明:加载速率对钻孔周边的破坏范围几乎不产生影响;卸载过程中,钻孔周边破坏范围与初始卸载应力及卸载速率相关,在进行底板顺层抽采钻孔布置时需综合考虑布孔位置处的应力值及卸载速率.
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出版历程
  • 收稿日期:  2016-07-25
  • 修回日期:  2017-06-26
  • 刊出日期:  2017-09-15

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