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首页> 外文会议>2007采矿科学与安全技术国际学术会议 >Optimization Study of Reinforcing Scheme on Shaft Lining Shearing Failure
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Optimization Study of Reinforcing Scheme on Shaft Lining Shearing Failure

机译：井壁剪切破坏加固方案的优化研究。

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摘要

Based on the engineering background of shaft lining shearing failure caused by a fault of drop 7.2 m in near vertical direction at Xinyi Coal Mine in Henan province, which the failure had taken place for three times successively, the paper applied numerical simulated method to study the influence on shaft lining stress by fault and brought forward shaft lining reinforcing measures for shaft safety. The numerical simulation reinforcing plan main included that different concrete strength, different shaft lining thickness, one eighth part circle of shaft lining reinforced by mesh steel near fault and all shaft lining reinforced by mesh steel. The simulation results of comparatively kinds of reinforcing schemes show that adding the thickness of shaft lining, increasing concrete strength and setting different reinforcement measures can all effectively improve the horizontal bearing capacity of shaft lining, especially, adding the thickness of shaft lining. Optimized results show that the scheme of the shaft lining thickness is 450mm, concrete strength C40 and one eighth part circle of shaft lining reinforced by mesh steel near fault should be used in shaft lining construction at depth 410-460m and the scheme of the shaft lining thickness is 600mm, concrete strength C40 and mine steel bar should be used in shaft lining construction below depth 460m.
机译：基于河南省信义煤矿近垂直方向跌落7.2 m断层引起的竖井衬砌剪切破坏的工程背景，该断层已经连续发生了3次，采用数值模拟的方法对断层进行了研究。故障对轴衬应力的影响，并提出了加强轴衬安全性的措施。数值模拟加固方案主要包括不同的混凝土强度，不同的井壁厚度，靠近断层的井眼钢筋网衬砌的八分之一圆和全部井眼钢筋网衬砌的四分之一圆。多种加固方案的仿真结果表明，增加井壁厚度，增加混凝土强度以及采取不同的加固措施，都可以有效地提高井壁的水平承载力，特别是增加井壁的厚度。优化结果表明，井壁厚度为450mm的方案，混凝土强度C40和断层附近钢筋网衬砌的井壁的八分之一圈应在深度410-460m的井壁施工中使用。厚度为600mm，深度460m以下的竖井衬砌应使用混凝土强度C40和矿用钢筋。

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