矿山爆破对尾矿库安全影响监测与仿真研究

发布时间：2018-07-04 21:48

本文选题：爆破振动 + 尾矿坝　；参考：《首都经济贸易大学》2013年硕士论文

【摘要】：尾矿库作为重大危险源，它的安全运行与否，不仅关系到矿山本身的正常生产，同时，也与尾矿库下游的人民的正常生产生活有着紧密的联系。全国范围内有尾矿库12600多座，其中100万m3以上的尾矿库有800多座。随着矿业技术的发展，尾矿库距离采场越来越近，但是爆破作业越来越频繁，所以应该对尾矿库安全运行的判定进行研究。本文在隆化新村矿业有限公司的采场及尾矿库进行现场，对爆破作业产生的振动进行测试，并测得13组振动加速度有效数据和33组振动速度有效数据，同时取得了尾矿砂的物理参数。对测得的数据进行回归分析，，得出了符合测试地点实际情况的萨道夫斯基公式：运用Geo-studio2007系统软件建立尾矿库模型，模型以实际尾矿库尺寸建立，输入的振动强度是采集到的最大加速度信号，即0.0666g，对应的振动速度为3.401cm/s。尾矿库分为正常库，病库和危库3个工况进行分析。通过改变振动强度的振幅而得出尾矿库的安全判据：就尾矿库坝体而言，承受的最大安全振动加速度即为0.333g，对应的振动速度为17.005cm/s，但应该留有3倍以上的安全储备量，也就是在爆破作业过程中，应该控制爆破振动强度，使其在尾矿库坝体产生的振动强度小于0.111g，振动速度应小于5.668cm/s。
[Abstract]:As a major hazard source, the safe operation of tailing reservoir is not only related to the normal production of the mine itself, but also closely related to the normal production and life of the people in the downstream of the tailings reservoir. There are more than 12600 tailings reservoirs in China, of which more than 1 million m ~ 3 are tailing reservoirs. With the development of mining technology, the tailing reservoir is closer to the stope, but the blasting operation is more and more frequent, so it is necessary to study the determination of the safe operation of the tailing pond. In this paper, in the stope and tailings reservoir of Longhua Xincun Mining Co., Ltd., the vibration produced by blasting operation is tested, and 13 sets of effective data of vibration acceleration and 33 sets of effective data of vibration velocity are obtained. At the same time, the physical parameters of tailings are obtained. The regression analysis of the measured data shows that the model of tailings reservoir is established by using Geo-studio2007 system software, and the model is built according to the actual size of the tailings reservoir. The input vibration intensity is the maximum acceleration signal (0.0666g), and the corresponding vibration velocity is 3.401 cm / s. The tailings reservoir is divided into three working conditions: normal reservoir, sick reservoir and critical reservoir. By changing the amplitude of vibration intensity, the safety criterion of tailing reservoir is obtained: for the tailing dam body, the maximum safe vibration acceleration is 0.333g, and the corresponding vibration velocity is 17.005cm / s, but there should be more than 3 times the safe reserve. In other words, in the process of blasting, the vibration intensity of blasting should be controlled so that the vibration intensity of tailing dam body is less than 0.111 g and the vibration velocity should be less than 5.668 cm / s.
【学位授予单位】：首都经济贸易大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：X936

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