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Combined Support Technology of Large Section Roadway in High-stress Fractured Surrounding Rock

机译：大型巷道中高应力围岩围岩的综合支持技术

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摘要

High-stress fractured surrounding rock roadway occupies a large proportion in mining roadways. In the high-stress fractured surrounding rock roadway, the main reason of roadway's instability and damage is the structural instability of support. How to improve the structural stability of support and the carrying capacity is very important for resolving the problem of high-stress fractured surrounding rock roadway bolt support. The paper is based on invalid principle of bolt support of high-stress fractured surrounding rock roadway. Aiming at the features of roadway damage, the paper proposes that the combined support technology of active support and passive support be adopted to solve the problem of high-stress fractured surrounding rock roadway through theory analysis. The primary support is the active support of cable anchor and gunite. The secondary support is the combined technology which is aided by closed bracket of double-deck I-beam combination to fill wall and grout surrounding rock of shallow roadway. Test at the underground reveals that the combined support technology can greatly improve the carrying capability of the shallow and deep surrounding rock so that it can satisfy the long-term stability of high-stress fractured surrounding rock roadway and reduce maintenance costs of mining roadway. Therefore it has significant economic benefit and extensive application prospect.
机译：高应力围绕岩石巷道占地面积大的比例。在高应力围岩围岩道路中，巷道不稳定和损坏的主要原因是支持的结构不稳定。如何提高支持的结构稳定性和承载力对于解决高应力围绕岩路道路螺栓支撑的问题非常重要。本文是基于高应力围岩围岩道路螺栓支撑的无效原理。旨在巷道损坏的特点，本文提出了通过理论分析解决了积极支持和被动支持的综合支持技术来解决高应力围岩围岩道路的问题。初级支持是电缆锚和喷枪的主动支撑。二次支持是组合技术，其由封闭的双甲板I梁组合辅助，以填充墙壁和灌木围绕浅巷道岩石。地下测试揭示了组合的支持技术可以大大提高浅层和深层岩石的承载能力，使其能够满足高应力围攻岩路的长期稳定性，降低采矿道路的维护成本。因此，它具有显着的经济效益和广泛的应用前景。

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