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有色金属工程:2024,(5)
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大红山铜矿点柱预裂爆破损伤控制研究
郑超1, 黄原明2, 赵艳伟2, 胡正祥2, 王正雄2, 左雪飞3, 王建国1
(1.昆明理工大学;2.玉溪矿业有限公司;3.云南燃一化工科技有限责任公司)
Damage controlled research on pre-cracking blasting of point pillar in Dahongshan Copper Mine
zhengchao1, huangyuanming2, zhaoyanwei2, huzhengxiang2, wangzhengxiong2, zuoxuefei3, wangjianguo1
(1.Kunming University of Science and Technology;2.Yuxi Mining Co., LTD.;3.Yunnan Fuel First Chemical Technology Co., LTD.)
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本文已被:浏览 273次   下载 114
投稿时间:2023-10-27    修订日期:2023-12-29
中文摘要: 地下矿山在采用房[1]柱法或者房柱法嗣后充填采矿法开采的过程中,为保证采场的稳定性,往往会预留大部分的矿柱来支撑着上部岩体。现如今采用的一些采矿方法在一定程度上对矿柱的稳定性造成损伤,因此研究和预防矿柱损伤变得至关重要,本文通过对比大红山铜矿西矿段180中段360-B144采场常规点柱法回采与点柱边界预裂爆破法两个方案,对矿柱造成的损伤来研究矿柱的稳定性。结果表明,常规点柱法回采爆破对矿柱的损伤深度在1.47m左右,而点柱边界预裂爆破对矿柱的损伤深度在1.21m左右,点柱边界预裂爆破与常规点柱法回采爆破相比,对周边矿柱的损伤影响较小。点柱边界预裂爆破区矿柱岩体声速变化幅度为9.02%,小于常规点柱法回采爆破区矿柱岩体声速变化幅度14.65%。
中文关键词: 声波测试  预裂爆破  损伤效应  矿柱
Abstract:During underground mining using room-and-pillar method or room-and-pillar subsequent filling mining method, in order to ensure the stability of the quarry, most of the pillars are often reserved to support the upper rock body. Some mining methods used nowadays cause damage to the stability of the pillars to a certain extent, so it is crucial to study and prevent the damage to the pillars. In this paper, the stability of the pillars is investigated by comparing the damage caused by the conventional point-pillar method and the point-pillar boundary pre-cracking and blasting method in the west section of the Dahongshan Copper Mine in the middle of the 180th section of the 360-B144 quarry. The findings show that the damage depth of conventional point-pillar mining is about 1.47m, while the damage depth of point-pillar boundary pre-cracking blasting is about 1.21m, and the damage impact of point-pillar boundary pre-cracking blasting on the neighboring pillars is smaller than that of conventional point-pillar mining. The change of sound velocity of the rock body in the point pillar boundary pre-cracking blasting area is 9.02%, which is smaller than the change of sound velocity of the rock body in the conventional point-pillar blasting area of 14.65%.
文章编号:YSJSGC20230624     中图分类号:    文献标志码:
基金项目:国家自然科学基金(52274083);“兴滇英才支持计划”项目(CCC21321262A);云南省基础研究计划面上项目(202201AT070178);云南省重大科技专项项目(202202AG050014)
引用文本:
郑超,黄原明,赵艳伟,胡正祥,王正雄,左雪飞,王建国.大红山铜矿点柱预裂爆破损伤控制研究[J].有色金属工程,2024,(5):.

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