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岩爆倾向条件下阶段空场胶结充填采矿法采场结构参数确定及应用
- 郝显福|赵丽军|刘慧|孙嘉
- 作者单位：
- 西北矿冶研究院&甘肃省深井高效开采与灾变控制工程实验室甘肃厂坝有色金属有限公司厂坝铅锌矿|西北矿冶研究院|西北矿冶研究院&甘肃省深井高效开采与灾变控制工程实验室|
基金项目：
- isnull
详细信息：
- 作者简介：
- 郝显福（1990—），男，青海海东人，工程师，主要从事金属矿山采矿设计咨询及技术服务工作；甘肃省白银市白银区人民路19号，西北矿冶研究院，730900；E-mail：haozaiooo@outlook.com
- 通讯作者：
- isnull
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Determination of stope structure parameters of bench open stoping with subsequent cemented backfill in rock
- English Author：
- Northwest Mining and Metallurgy Research Institute&Gansu Deep Well High Efficiency Mining and Disaster Control Engineering Laboratory|Changba Lead-Zinc Mine of Gansu Nonferrous Metal Co.,Ltd.|Northwest Mining and Metallurgy Research Institute|Northwest Mining and Metallurgy Research Institute&Gansu Deep Well High Efficiency Mining and Disaster Control Engineering Laboratory
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
针对小厂坝矿区的矿岩特点和深部回采区域岩爆倾向性特征，确定采用阶段空场胶结充填采矿法。通过对开采后的应力分布规律分析，确定了沿走向布置矿块，并以切割槽的形成为手段，改变围岩和矿体中的应力场分布状态，实现了卸压开采。通过矿岩物理力学分析和理论计算，确定了小厂坝矿区岩爆区域分段凿岩阶段空场的矿房跨度、顶板厚度、间柱宽度分别为40 m、6 m、10 m。通过对原设计底部结构形式的优化，提高了出矿效率，增大了底柱的厚度，提高了作业的安全性。应用实践表明，岩爆倾向条件下采场结构参数的优化，有效防止了地压灾害、提高了生产效率，保证了生产安全，经济和社会效益显著。
关键词:
深部开采；岩爆倾向；卸压开采；采场结构参数；阶段空场；矿块布置
Abstract:
For ore-rock characteristics in Xiaochangba mining area and the rock-burst tendency characteristics in the deep mining zone,the bench open stoping with subsequent cemented backfill was selected.According to analysis of the stress distribution rule after mining,the block layout was determined to be along the strike;and by the means of cutting grooves formation,the surrounding rock and the stress field distribution in the ore body were changed and pressure relief mining was realized; through theoretical calculation and ore-rock mechanical analysis,the reasonable ore room span,roof thickness and the distance between columns of sectioned drilling and bench open stoping in the rock burst area of Xiaochangba mining area were determined to be 40 m,6 m,10 m respectively.Through the optimization of original stope bottom structure,mining efficiency,thickness of sill pillar and operation security were improved.Application practice shows that optimization of stope structure parameters in rockburst tendency can effectively prevent ground pressure disasters,improve production efficiency and ensure safe operation,creating significant economic and social benefits.
Keywords:
deep mining;rock-burst tendency;pressure relief mining;parameters of stope structure;bench open stope;block layout
