【正文】
② blasting near the edge on the vertical layout help three measuring points, Research blasting near the slope of the vibration and shock blasting laws to help ensure the stability edge requirements. Monitoring Analysis According to the 2 ore mining process. From 2021 09 ~ 202111 blasting vibration on the right of 16 onsite monitoring, made a hanging wall ore in the process of excavation blasting vibration data. Opencast monitoring method based on the characteristics of the establishment of calculated results forms of monitoring data for statistical analysis can be drawn. 2 in the hanging wall 14 mining process blasting vibration has the following characteristics. (1) in the hanging wall ore mining blasting process, the measuring point, the vertical velocity and direction of the level of vibration velocity close, and the largest of its vibration is much less than INGENIOUS dangerous slope of the critical velocity value of 22 cm / s, Therefore it that the current blasting parameters is feasible. (2) Blasting vibration frequency slope than the natural frequencies, it is not easy slope damage. (3) The duration of blasting vibration is generally less than 500 ms. (4) Geological conditions in certain circumstances, distance and amount of drugs affecting the size of blasting vibration of the main factors, and the impact of distance than the dosage sensitive. 4, the conclusion (1) High and steep slope stability. High on the slope to help ore mining linked to the problem is necessary, slope stability monitoring the actual, make explicit purpose of monitoring pliance with the actual design and build realtime monitoring system to ensure slope stability. (2) Bursting of the high and steep slope should not be neglected, should carry out damping control, and on the basis of need, blasting vibration for realtime monitoring to ensure that safe mining. (3) The slope deformation monitoring and vibration monitoring, according to geological and engineering 15 needs, and deployed monitoring points, focused, as a prehensive, ensure slope stability. 16 。 a maximum dosage ≤ 600kg. (3) singlerowbyblasting method to minimize ring for the largest single dose. That is, each blasting a hole Ranging shaped charge, and to increase after initiation of the delay, start using more of other detonators, hop setup, such as : 5,7,9,11,13, and so on. Meanwhile, a high steep slope should help ore made from discarded in the process of excavation blasting vibration caused by the monitor, with a view to achieving the following objectives : ① timely process control mining blasting vibration to the size, determine its impact on the slope。 observation point is to set up observation equipment, has been set up in the south to help stabilize the pit level as a measurement to help North displacement of the point The location request can facilitate home microscopy and measurement of the operation, the mining area has a readymade laid a good point。 we need to help the North 2 pegged to help expand help for ore mining. 2 hanging wall of the Eagle39。s large and mediumsized metal mines are mostly built in the last cent