基于正交设计的露天矿V形槽结构滚石防护试验

发布时间：2018-06-07 01:16

本文选题：正交设计 + 滚石防护　；参考：《煤炭学报》2017年09期

【摘要】：交通领域针对滚石防护已开展大量研究工作,但对于矿山而言,因其工程扰动频繁、岩石破碎等特点,滚石防护专项研究甚少,常采用安全平台和清扫平台设计防治滚石。然而,随着开采深度和规模增加,上述方法已无法有效阻挡扩帮扰动产生的大量滚石,滚石伤人和损坏设备事故频发。针对上述问题,以南芬露天铁矿采场下盘边坡滚石防护为例,首先,基于正交试验原理,利用Rocfall程序分别对"安全平台滚石防护措施"进行3指标4因素数值模拟正交试验,对"安全平台上设计V形槽滚石防护措施"进行3指标5因素数值模拟正交试验;然后,对试验结果进行极差分析,揭示2种措施各个因素对滚石运动特征的影响规律;最后,确定2种方法的最优参数组合,并在南芬露天铁矿选择实验区,进行现场对比试验。试验结果证明V形槽结构能够有效防护滚石,可为露天矿山高陡边坡滚石防护提供借鉴。
[Abstract]:A great deal of research work has been carried out in the field of transportation for the protection of rolling stones, but for mines, because of the characteristics of frequent disturbance and rock breakage, the special research on the protection of rolling stones is very few, and the safety platform and cleaning platform are often used to design and prevent the rolling stones. However, with the increase of mining depth and scale, the above methods can no longer effectively prevent a large number of rolling stones, which are caused by the disturbance of the expanded side, which cause frequent accidents of injury and damage to equipment. In order to solve the above problems, taking the protection of rock rolling in the downboard slope of Nanfen opencast iron mine as an example, firstly, based on the principle of orthogonal test and using Rocfall program to carry out three indexes and four factors numerical simulation orthogonal test of "measures for the protection of rolling stones on safety platform". The orthogonal experiment of 3 indexes and 5 factors numerical simulation is carried out on the "measures for protecting Rolling Stone with V Groove designed on the Safety platform". Then, the range analysis of the test results is carried out to reveal the influence of each factor of the two measures on the rolling stone movement characteristics. Finally, The optimal parameter combination of the two methods was determined and the field comparative test was carried out in Nanfen opencast iron mine. The test results show that the V-shaped groove structure can effectively protect the rolling stone and can be used for reference for the protection of the rolling stone in the high and steep slope of open pit mine.
【作者单位】：中国矿业大学(北京)力学与建筑工程学院;中国矿业大学(北京)深部岩土力学与地下工程国家重点实验室;吉林大学建设工程学院;重庆市地质矿产测试中心;
【基金】：国家自然科学基金资助项目(41502323,41602308) 浙江省山体地质灾害防治协同创新中心开放基金资助项目(PCMGH-2016-Z-02)
【分类号】：TD854.6;TD861.1

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