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首页> 外文期刊>Journal Of The South African Institute Of Mining & Metallurgy >Winning paper: Analysis of strike gully stability at TauTona Mine
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Winning paper: Analysis of strike gully stability at TauTona Mine

机译：获奖论文：TauTona矿井的走河沟稳定性分析

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A study into the stability of strike gullies at TauTona mine was to be carried out. In reaching the conclusions to follow, a three-stage process was followed.A literature study as well as discussions with management and workers alike to gain their inputs and perceptions.An ESH Department survey into the history of transgression from proper mine standard in TauTona strike gullies. Unfortunately records were found to be scarce and obscure and the importance of better inter-departmental recordings cannot be stressed enough.An underground survey of 11 pre-selected gullies distributed in both the UCL and LCL reef horizons. This stage is to carry the greatest weight in the points to be brought forward in this report.The process highlighted and ranked the following areas as the most critical role players in the deterioration of strike gullies:Poor blasting practiceSub-standard siding depth and lead-lagsSplit setsOff line gully developmentAdverse geological features.The following has been suggested to the mine to help reduce strike gully instability.Where possible, maintain lead-lags below 7 m-else increase the siding depth to suit.Decrease the gully width standard to 1.2 m (especially in 'high risk areas').Discourage drillers from drilling side holes in gully face blast pattern. This will allow for time in which tendon support can be kept up to date.Ensure split sets are installed 1 m behind the gully face so as to prevent opening up of fractures.Utilize the centre split set in the 1:2:1 pattern to maintain the proper gully line.When adverse conditions prevail, it is necessary to apply a special support plan not only to the panel face, but also (just as importantly) to the gully as well. Shotcreting of the gully hanging is a suitable long-term consideration for providing the additional areal coverage needed.
机译：将对TauTona矿山的罢工沟的稳定性进行研究。为了得出结论，我们遵循了一个三个阶段的过程：进行文献研究以及与管理层和工人进行讨论，以获取他们的投入和看法.ESH部门对TauTona罢工因适当的矿山标准而犯罪的历史进行了调查沟渠。不幸的是，发现记录稀少且晦涩难懂，因此无法充分强调部门间更好记录的重要性。对UCL和LCL礁岩层中分布的11个预选沟渠进行了地下调查。该阶段将在本报告中提出的要点上发挥最大的作用。该过程着重指出了以下几个方面，将其归为打击沟渠恶化的最关键角色：不良的爆破实践不合标准的墙板深度和铅含量-滞后分裂集离线沟的发展不利的地质特征。已向矿山建议以下措施，以帮助减少走沟的不稳定性。在可能的情况下，将铅滞后保持在7 m-else以下，以增加侧墙的深度以适合。将沟宽标准降低至1.2 m （尤其是在“高风险地区”）。不鼓励钻工以沟形爆破方式在侧孔上钻孔。这将留出一定的时间以使腱支撑保持最新状态。确保在沟渠面后1 m安装分叉组，以防止裂缝张开。以1：2：1模式使用中心分叉组保持适当的沟渠线。当不利条件普遍存在时，不仅要对面板表面应用特别的支持计划，而且还要对沟渠（同样重要的是）应用特别的支持计划。沟槽悬挂的喷射混凝土是提供所需的额外区域覆盖的合适的长期考虑。

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