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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 >Numerical Simulation Study on Reinforcing Parameters of Ground Grouting in Mending Shaft Lining Rupture
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Numerical Simulation Study on Reinforcing Parameters of Ground Grouting in Mending Shaft Lining Rupture

机译：修补井壁衬砌破裂中注浆加固参数的数值模拟研究

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摘要

Based on the engineering background of Xuehu main shaft in Henna Shenhuo Group Co., Ltd, by the numerical simulation method, the paper analyzes systematically shaft lining stress states and deforming data under different reinforcing parameters(reinforcing distance, reinforcing width, cement grouting material) of ground grouting, and the general effect on mending shaft lining rupture. The results of numerical simulation show that the stress magnitude of shaft lining has direct relations with parameters which are used in grout reinforcing stratum. As the reinforced distance outside shaft lining is twice as much as shaft radius and the reinforced width is four times as much as shaft radius, the effect on mending shaft lining rupture is most remarkably in all reinforcing schemes. Compared with no grouting, the maximum vertical stress of shaft lining can decrease 42.1 percent on the interface between innermost aquifer and bedrock. As the reinforced distance and width are constant, the maximum vertical stress will reduce with cement grouting parameters (Young's modulus, internal friction angle, cohesive strength) increasing, but they have not obvious effect on mending shaft lining rupture. The effects on stress magnitude of shaft lining about cement grouting parameters are also provided in the paper.
机译：基于指甲花神火集团有限公司雪湖主轴的工程背景，通过数值模拟方法，系统分析了不同加固参数（加固距离，加固宽度，水泥灌浆材料）下的井壁应力状态及变形数据。灌浆的效果，以及对修补井壁破裂的一般影响。数值模拟结果表明，井壁衬砌的应力大小与灌浆加固层所使用的参数有直接关系。由于轴衬外部的加固距离是轴半径的两倍，而加固宽度是轴半径的四倍，因此在所有加固方案中，对修补轴衬破裂的影响最为明显。与不灌浆相比，最内层含水层与基岩之间的界面，竖井衬砌的最大垂直应力可降低42.1％。由于加固距离和宽度不变，最大垂直应力将随水泥灌浆参数（杨氏模量，内摩擦角，内聚强度）的增加而减小，但对修补竖井衬砌的破裂影响不明显。本文还提供了水泥灌浆参数对竖井衬砌应力大小的影响。

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