Numerical Simulation and Reinforcing Technology Research on Collapse of Weak Interlayer Shaft

• 作者: Youzhong Lu
• 来源期刊: 建筑发展研究
• 学科: 工学
• 关键词: VERTICAL SHAFT COLLAPSE NUMERICAL simulation REINFORCEMENT
• 年，卷（期）: 2019,（5）
• 页码范围: 9-15
• 页数: 7页
• 分类号: TD3

摘要

The three-level shaft of the mixed pit shaft of Yixin Mine,built in 1983,failed continuously due to the influence of geological structure and the effect of water,which formed a collapsed space with a length of 18m,a depth of 12m,and a height of 12m at the level of-255m and to the southwest end.The 54m pit shaft below the-258m elevation of the pit shaft was filled with collapsed rocks forming a large loose body.The comprehensive processing plan for falling grouting and anchoring was proposed according to the geological conditions of the vertical shaft of the mixed pit shaft,adopting three-dimensional numerical simulation software as well as calculating the mechanical state of the vertical pit shaft surrounding rocks and using 3 to 5 parameters of Williams-Warnke failure criterion.