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首页> 外文期刊>Journal Of The South African Institute Of Mining & Metallurgy >An effective face support system to minimize rockfalls
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An effective face support system to minimize rockfalls

机译：有效的面部支撑系统，可最大程度地减少落石

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An effective prototype face support system to minimize rockfalls in rockfall-prone mines was developed and patented during a project sponsored by the Mine Health and Safety Council (MHSC). An experimental dcvelopment model (XDM) roof support unit was developed and evaluated. Mines with rockfall problems in the lace areas can use the roof support system to reduce fatalities and injuries in the face area of slopes. The roof support system consists of two similar support units connected to each other via two crank mechanisms. Each unit consists of a headboard supported by a 'wishbone' structure (top and bottom leg). In the first design a threaded bar with struts similar to a scissors jack keeps the legs apart. (In the final version that was field trialed. the threaded bar mechanism was replaced with a hydraulic cylinder). All the components are manufactured from steel. To move the system forward the first support unit is collapsed, the second remaining in the loaded position. The first unit then hangs from the second unit to which it is connected. The first collapsed unit is then manually cranked forward and prestressed. If the required position is still not achieved, the other unit is released and moved forward. The specification for the system was determined and presented at a workshop with industry participants. Different concepts were developed and evaluated against the system specifications. A technology demonstrator was then developed and tested on surface. The technology demonstrator development process included detail design, building and testing of components and subsystems, design reviews and the building and commissioning of the technology demonstrator. The testing of the technology demonstrator was done in a 500-ton hydraulic press, in a mock-up stope and underground. A risk analysis, in which technical, logistical and economic aspects were assessed, was done to determine the critical areas of the system. During the next phase of the project working prototypes were developed for underground tests and evaluation. This process indicated that it was necessary to adjust the system specifications and a redesign was called for. In an iterative process test units were built for purposes of evaluation, specification verification and field trialing. After the successful conclusion of the trials the equipping of a complete production slope started for purposes of integrating the system into the current mining process.
机译：在矿山健康与安全委员会（MHSC）赞助的项目中，开发了一种有效的原型工作面支撑系统，该系统可最大程度地减少易崩落的矿山中的崩落，并申请了专利。开发并评估了实验开发模型（XDM）屋顶支撑单元。花边区域有落石问题的矿井可以使用屋顶支撑系统来减少斜坡工作面的死亡和伤害。车顶支撑系统由两个相似的支撑单元组成，它们通过两个曲柄机构相互连接。每个单元都包括一个床头板，该床头板由“叉骨”结构（上下支腿）支撑。在第一种设计中，带有类似于剪刀千斤顶的撑杆的螺纹杆将腿分开。 （在经过现场试用的最终版本中，用液压缸代替了螺纹杆机构）。所有组件均由钢制成。为了使系统向前移动，第一支撑单元被折叠，第二支撑单元保持在加载位置。然后，第一单元从与其连接的第二单元悬挂下来。然后，将第一个折叠的单元手动向前弯曲并预紧。如果仍未达到所需位置，则释放另一个单元并向前移动。确定了该系统的规范，并在与行业参与者的研讨会上进行了介绍。根据系统规范开发并评估了不同的概念。然后开发了技术演示器并在表面上进行了测试。技术演示器的开发过程包括详细设计，组件和子系统的构建和测试，设计审查以及技术演示器的构建和调试。该技术演示器的测试是在一个500吨的液压机中，一个模型采场和地下进行的。进行了风险分析，评估了技术，后勤和经济方面，以确定系统的关键区域。在项目的下一阶段，开发了用于地下测试和评估的工作原型。该过程表明有必要调整系统规格，因此需要重新设计。在迭代过程中，建立了测试单元，以进行评估，规格验证和现场试验。在成功完成试验后，为了将系统集成到当前的采矿过程中，开始安装完整的生产坡度。

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