二里河铅锌矿爆力运搬采矿工艺优化研究

发布时间：2018-06-06 00:18

本文选题：采矿工艺 + 爆破参数优化　；参考：《西安建筑科技大学》2015年硕士论文

【摘要】：随着全球矿业热潮逐渐褪去,国内矿业形势进入新常态,矿产资源需求增长放缓,产能严重过剩,矿产品价格一路下跌。在这种严峻的市场环境下,降低开采成本、安全高效开采成为矿山企业竞争和发展的必然选择。隶属于西北有色地质勘查局的二里河铅锌矿,其Ⅱ1号矿体随着鞍部深部开采,爆力运搬采矿工艺遇到了一些技术难题,直接影响着矿山的生产效率和经济效益。本文在实际调查研究的基础上,深入分析了二里河铅锌矿Ⅱ1号鞍部矿体开采时存在的问题,对爆破运搬采矿工艺进行了优化研究,首先,介绍了爆力运搬采矿方法在二里河铅锌矿实际应用中存在的问题—爆破效果差及运搬效率低下,针对这些问题,阐述了爆力运搬采矿工艺优化的研究原理及方法;其次,根据二里河铅锌矿鞍部矿体回采的实际情况,设计和训练适用于本矿山爆破参数优选的网络模型,并通过Matlab工具箱对训练好的BP神经网络进行仿真,分析预测结果,从而优选出最佳的爆破参数;再次,根据鞍部矿体开采技术条件及采矿工艺,建立爆力运搬矿石运动轨迹模型,并运用Rocfall软件对矿石运搬过程进行数值模拟,为类似开采条件的矿山计算爆力运搬距离提供了一种新思路;最后,设计两平行试验采场,应用改进前后的采矿工艺进行回采。经技术经济评价,与原采矿工艺相比较,炸药消耗降低7.5%,应用效果良好。改进后的爆力运搬采矿工艺,不仅能够有效地解决采场爆破及运搬问题,从而保证工人作业安全,提高矿山经济效益,同时也为采用爆力运搬工艺的类似矿山设计和生产管理提供了理论依据,研究成果对于完善爆力运搬采矿工艺具有指导意义。
[Abstract]:As the global mining boom fades, domestic mining has entered a new normal, demand for mineral resources has slowed, overcapacity has been severe, and mineral prices have fallen. In this severe market environment, reducing the mining cost and mining safely and efficiently becomes the inevitable choice for the competition and development of mining enterprises. The No. 1 orebody of Erlihe Lead-Zinc Mine, which belongs to the Northwest Non-ferrous Geological Exploration Bureau, has encountered some technical problems with the deep mining in Anbei, which directly affects the production efficiency and economic benefit of the mine. On the basis of actual investigation and research, this paper deeply analyzes the problems existing in the mining of No.1 Anchorage orebody of Erlihe Lead-Zinc Mine, and studies the optimization of blasting moving and lifting mining technology. This paper introduces the problems existing in the practical application of blasting force transport and lifting mining method in Erlihe lead and zinc mine. The blasting effect is poor and the moving and lifting efficiency is low. In view of these problems, the research principle and method of blasting force transport and lifting mining process optimization are expounded. According to the actual mining situation of the Anshan orebody in Erlihe lead-zinc mine, a network model suitable for the optimum selection of blasting parameters in this mine is designed and trained. The trained BP neural network is simulated by Matlab toolbox, and the prediction results are analyzed. Then the best blasting parameters are selected. Thirdly, according to the mining technical conditions and mining technology of Anbu orebody, the moving track model of blasting force is established, and the numerical simulation of ore transport and lifting process is carried out by using Rocfall software. This paper provides a new idea for calculating the distance of blasting force transport in mines with similar mining conditions. Finally, two parallel test stope are designed, and the improved mining technology is used for mining. Through technical and economic evaluation, compared with the original mining technology, the explosive consumption is reduced by 7.5%, and the application effect is good. The improved blasting force moving mining technology can not only effectively solve the problems of stope blasting and moving, but also guarantee the work safety of workers and increase the economic benefit of mines. At the same time, it also provides a theoretical basis for the design and production management of similar mines using blasting force transport and lifting technology, and the research results are of guiding significance for the improvement of blasting force transport and lifting mining technology.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD862

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