| 矿柱稳定性影响因素敏感性分析及其应用研究 |
| |
| 引用本文： | 宋卫东,曹帅,付建新,江国建,吴锋.矿柱稳定性影响因素敏感性分析及其应用研究[J].岩土力学,2014,35(Z1):271-277. |
| |
| 作者姓名： | 宋卫东 曹帅 付建新 江国建 吴锋 |
| |
| 作者单位： | 1. 北京科技大学 金属矿山高效开采与安全教育部重点实验室，北京 100083；2. 北京科技大学 土木与环境工程学院，北京 100083； 3. 招金矿业股份有限公司 尹格庄金矿，山东 招远 265414 |
| |
| 基金项目： | 国家自然科学基金资助(No.51274023)；中央高校基本科研业务费专项资金资助(No. FRF-SD-12-003A)。 |
| |
| 摘 要： | 为研究矿柱稳定性影响因素的敏感程度,以招金大尹格庄金矿为研究背景,从矿柱载荷、强度、失稳形式及影响因素确定四方面推导出两种矿柱形式的安全系数计算公式,设计采用6因素5水平正交试验对矿柱稳定性影响因素敏感性进行分析,并研究主要影响因素与矿柱安全系数之间的函数关系。研究表明,矿柱宽度、矿体开采深度和矿房宽度3个主要因素对矿柱稳定性影响程度是最为剧烈的;矿柱安全系数随着矿柱宽度地增加呈指数形式递增且递增速率不断加大,随矿体开采深度地增加呈幂函数形式递减且递减速率逐渐变缓,随矿房宽度地增加呈负指数形式递减且降低速率逐渐变慢。利用DPS和Matlab建立的矿柱安全系数回归方程得出保证安全生产的合理矿柱尺寸,矿房宽度应不超过8 m,布置条形矿柱宽度应不小于3.6 m,布置方形矿柱宽度应不小于5.9 m。结合采场矿柱布置实际,应用效果较为理想,可为下中段矿体回采矿块布置提供较好的依据。
|
| 关 键 词： | 正交试验法 敏感性分析 矿柱稳定性 安全系数法 回归方程 |
| 收稿时间： | 2013-06-21 |
Sensitivity analysis of impact factors of pillar stability and its application |
| |
| SONG Wei-dong
,
CAO Shuai
,
FU Jian-xin
,
JIANG Guo-jian
,
WU Feng.Sensitivity analysis of impact factors of pillar stability and its application[J].Rock and Soil Mechanics,2014,35(Z1):271-277. |
| |
| Authors: | SONG Wei-dong CAO Shuai FU Jian-xin JIANG Guo-jian WU Feng |
| |
| Institution: | 1. State Key Laboratory of High-Efficient Mining and Safety of Metal Mines of Ministry of Education, University of Science and Technology Beijing, Beijing 100083, China; 2. School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; 3. Yingezhuang Gold Mine, Zhaojin Mining Industry Co., Ltd., Zhaoyuan, Shandong 265414, China |
| |
| Abstract: | To understand the sensitivity of factors influencing pillar stability, pillar arrangements in different sublevels are counted. Based on the local pillars in Dayingezhuang gold mine, pillar safety factor formulas of different forms were derived. Using six factors-five levels technology to design the experiment to analyze sensitivity of impact factors; at the same time this paper studies the relationships between pillar safety factor and pillar width, mining depth and room width. The study shows that the size of sensitivity of these factors affecting the stability of the pillar has been obtained via orthogonal experiment method and diminishes in turn : pillar width, mining depth, room width; in addition, the pillar safety factors follow the exponential function with the pillar width growth; follow power function with the mining depth decrease; and follow the exponential function with room width decrease. According to the pillar safety factor regression equation which is based on DPS and Matlab software, the minimum size of single-form pillar arrangement which satisfies both stability and security of the pillar has been reasonably obtained after analysis. Column width should be no less than 3.6 m; square column width should be 5.9 m or lager; and the room width should be no more than 8 m, which will certainly provide identifiable ground for the arrangements of pillar in deep middle section. |
| |
| Keywords: | orthogonal experiment method sensitivity analysis pillars stability safety coefficient method regression equation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《岩土力学》浏览原始摘要信息 |
| 点击此处可从《岩土力学》下载免费的PDF全文 |
|
