平朔东露天矿爆堆形态优化研究

发布时间：2018-06-16 14:51

本文选题：weibull分布函数 + 高速摄影　；参考：《武汉理工大学》2015年硕士论文

【摘要】：矿山生产过程中的每一个环节都影响着矿山经济效益,其中穿孔爆破的质量和矿岩采装的效率影响极为明显。针对爆破过程中出现的问题提出优化方案以及研究提高采装效率的途径是矿山工作者一直研究并亟待解决的一项难题,做好了这项工作,将对于提高矿山的生产效率和经济效益产生巨大的帮助作用。论文利用Weibull分布函数结合矿山爆破参数数据建立数学模型,通过模拟得到爆堆形态分布图,并与实测爆堆形态图进行对比;改变参数,得到不同参数条件下的爆堆形态图,为后续的爆堆形态优化提供理论依据;根据矿山实际和理论计算并结合shotplus设计软件对影响爆堆形态分布的参数进行优化,并使用高速摄影技术对爆堆形态优化方案的效果进行评价与分析;使用排队论法计算不同车铲配比情况下的车铲比、车铲容积比和经济效益,得到最优配车方案并使用这个方案对爆堆形态优化后的电铲满斗率和装车时间进行了统计分析并得出结论。全文主要研究成果如下:(1)通过对矿山10次爆破过程的28组爆堆剖面形态的模拟研究,验证了weibull分布函数能较准确的模拟爆堆形态,是一种可行的爆堆形态模拟手段;通过对不同参数条件下的爆堆形态模拟,结合PH4100XPB型电铲技术参数,初步确定台阶高度18m,孔距9m,排距7.5m参数条件下的爆堆形态适合电铲作业要求。(2)根据矿山实际和理论计算并结合shotplus设计软件确定了优化方案即台阶高度18m,孔距9m,排距7.5m,三角型布孔,间隔装药,V型起爆网络的优化方案;采用高速摄影技术对此方案的爆堆形态优化效果进行评价,结果显示,爆堆高度、爆堆宽度和爆堆松散性总体优化效果较为理想。(3)采用排队论法确定车铲比和勺容比并比较车铲配比经济效益,得出PH4100XPB配930E卡车优于793D卡车;对爆堆形态优化前后的电铲满斗率和装车时间进行了统计分析,从多方面对其进行了对比研究,研究结果显示:优化后的爆堆形态能更好地满足电铲生产要求。通过上述研究,爆堆形态优化方案改善了矿山爆破后形成的爆堆形态,确实提高了电铲铲装的满斗率,缩短了电铲装车时间,提高了电铲的的生产能力,达到了预期的目标。
[Abstract]:Every link in the process of mine production affects the economic benefit of the mine, among which the quality of perforation blasting and the efficiency of mining and loading are very obvious. Aiming at the problems in blasting process, it is a difficult problem for mine workers to put forward the optimization scheme and study the ways to improve the efficiency of mining and loading, which is a difficult problem to be solved by the mining workers all the time, and the work has been done well. It will be of great help to improve the production efficiency and economic benefit of mines. In this paper, a mathematical model is established by using Weibull distribution function combined with mine blasting parameter data, and the shape distribution map of blasting reactor is obtained by simulation, and compared with the measured one, the shape map of explosion pile under different parameters is obtained by changing the parameters. According to the actual and theoretical calculation of the mine and the shotplus design software, the parameters affecting the distribution of the explosive reactor morphology are optimized. Using high-speed photography technology to evaluate and analyze the effect of the optimization scheme of explosion heap shape, and using the queuing theory method to calculate the car shovel ratio, the volume ratio and the economic benefit of the car-shovel ratio under different car-shovel ratios. The optimal car allocation scheme is obtained and the full bucket rate and loading time of the electric shovel after optimizing the shape of the explosion reactor are analyzed statistically and the conclusion is drawn. The main research results are as follows: (1) based on the simulation of 28 groups of blasting profiles of 10 blasting processes in a mine, it is verified that the weibull distribution function can simulate the shape of explosion reactor more accurately, and it is a feasible method for simulating the shape of blasting reactor. By simulating the shape of the explosion reactor under different parameters, combining with the technical parameters of PH4100XPB type electric shovel, The height of step is 18 m, the distance of hole is 9 m, and the shape of blasting pile under the parameter of 7.5 m is suitable for shovel operation.) according to the actual and theoretical calculation of mine and shotplus design software, the optimization scheme is determined, that is, the height of step is 18 m, the distance of hole is 9 m, and the arrangement is as follows. With a distance of 7.5 m, triangular type, The optimization scheme of V type initiation network for spacer charge and high speed photography is used to evaluate the effect of optimizing the shape of detonation reactor. The result shows that the height of detonation reactor, The overall optimization effect of the width and looseness of the explosion pile is ideal. The queuing theory method is used to determine the shovel ratio and the scoop volume ratio and to compare the economic benefit of the shovel ratio. It is concluded that PH4100XPB with 930E truck is superior to the 793D truck. The full bucket rate and loading time of electric shovel before and after optimizing the shape of explosion reactor are statistically analyzed and compared from various aspects. The results show that the optimized configuration of explosion reactor can better meet the production requirements of electric shovel. Through the above research, the optimization scheme of blasting heap shape has improved the form of blasting heap formed after mine blasting, and has really increased the full bucket rate of shovel loading, shortened the loading time of electric shovel, improved the production capacity of electric shovel, and achieved the expected goal.
【学位授予单位】：武汉理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD824.2

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