Stability control of a deep shaft insert

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• 作者：Guofeng LI ; Zhigang TAO ; Hongyun GUO ; Ping QI ; Zhibiao GUO
• 关键词：deep shaft ; shaft insert ; stability
• 刊名：Mining Science and Technology (China)
• 出版年：2010
• 出版时间：July 2010
• 年：2010
• 卷：20
• 期：4
• 页码：491-498
• 全文大小：2473 K

文摘

The deterioration of a deep shaft insert at the Xing'an Coal Mine was analyzed by studying the physical and mechanical properties of the rock located at key positions relative to the shaft. Factors that influence shaft stability were obtained. The numerical simulation program FLAC^3D was used to simulate the destruction of the deep shaft insert. Two different support methods were analyzed by simulation. The simulations demonstrate that a single stiffness support is inappropriate for this shaft insert. The appropriate support method is an integrated coupling method of rigid and flexible supports. The flexible support is applied first and then the rigid support is second. Engineering practice in the Xing'an Coal Mine shows that this technology can effectively control deep-shaft insert deterioration. This support approach provides an important direction for future project design and construction, as well.