| 黄铃,王军,吴德义.上覆巨厚砂岩顶板“三带”范围数值模拟与界定[J].安徽建筑大学学报,2015,23(): |
| 上覆巨厚砂岩顶板“三带”范围数值模拟与界定 |
| The overlying thick sandstone roof range |
| 投稿时间：2014-09-05 修订日期：2015-03-19 |
| DOI： |
| 中文关键词: 采空区 三带 数值模拟 |
| 英文关键词: mined area three zones numerical simulation |
| 基金项目:国家自然科学基金资助项目(51374009) |
|
| 摘要点击次数: 2809 |
| 全文下载次数: 0 |
| 中文摘要: |
| 为定量的划分采空区上覆巨厚砂岩顶板的“三带”范围,根据数值模拟的应力与位移结果,提出“三带”的界定准则：将三个主应力都为拉应力的岩层高度定为裂隙带的下限；将单元状态为剪切破坏的岩层高度定为裂隙带的上限；并结合上覆岩层弯曲下沉带梯度是冒落带的0.4倍进行估算。采用FLAC3D软件对矿山进行数值模拟。结合实际观测进行验证。 |
| 英文摘要: |
| Quantitative divided on mined area thick overlying sandstone range "three zones"：according to the simulation of stress results presented mechanics defined criteria " Three Zones"： the three principal stresses are tensile stress in the rock height as the lower limit of the fracture zone, the unit status and plastic shear failure of rock destruction fissure height as the upper limit of the band. Using FLAC3D software to simulate the mine. According to the results of high pumping Lane reasonable guidance furnish. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
