• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>PACRIM Congress >Stope Stability at the Big Gossan Skarn Deposit, Papua, Indonesia
【24h】

Stope Stability at the Big Gossan Skarn Deposit, Papua, Indonesia

机译：在大甘蓝斯卡纳山，印度尼西亚巴布亚的Stope稳定性

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Big Gossan mine is operated by PT Freeport Indonesia and is one of the largest stope-and-fill mining systems in the world. The Big Gossan deposit is a -200 m wide, 1200 m long and 500 m high steeply north-east-dipping to subvertical skarn body at the Cretaceous-Tertiary Ekmai-Waripi contact. The copper-gold mineralisation, with a 1.3 per cent copper equivalent cut-off grade, occurs mainly proximal to the Ekmai-Waripi contact in the garnet-clinopyroxene prograde skarn at the base of the Tertiary Waripi formation and partly distal to the contact in the tremolite-actinolite retrograde skarn of the Tertiary Waripi formation.The Big Gossan stope mine is designed from 2540 m to 3020 m above sea level. Present active stoping operations occur at level 2540 mL to level 2640 rnL and are done in a primary and secondary stoping sequence. The width and length of the stopes is 15 m and 20 m respectively, while the height of the stope varies between 20 m and 40 m, depending on the ground conditions. The stability of the stopes is visualised in the Mathew's Stope Stability graphs. These graphs and actual Cavity Measurement Scanner measurements on the stope will predict and show the overbreak and underbreak, which affect the reconciliation of the mined stope and also the pillar stability between the primary stopes. Geological factors like major structures, joints, veins and alteration intensity are important factors that correlated with the stability of the Big Gossan stopes.
机译：Big Gossan Mine是由PT自由港印度尼西亚的运营，是世界上最大的矿藏系统之一。大甘肃矿床宽度为-200米，长1200米长，500米高，陡峭的东北浸在白垩纪 - Tertiary ekmai-Woripi联系人。铜金矿化，铜铜型铜型铜型矿床，主要发生在第三款Woripi底部的石榴石斜面斜面矽卡岩中的ekmai-woripi接触旁边，并部分远离接触Tremolite-ActinoLite逆行Tradripi形成的斜视。大八山Stope Mine设计从海拔2540米至3020米。目前的主动停止操作发生在2540毫升至2640级RN1处，并以初级和次级止动序列完成。止挡的宽度和长度分别为15米和20米，而迹象的高度在20米和40μm之间变化，这取决于地面条件。在Mathew的STOPE稳定性图中可视化止动件的稳定性。这些图和实际的腔体测量扫描仪测量的迹象将预测和显示溢出和破产，影响开采的姿势和初级止动之间的支柱稳定性。像主要结构，关节，静脉和改变强度等地质因素是与大甘烷停止的稳定性相关的重要因素。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号