EVALUATION OF PILLAR STRENGTH USING UNMERICAL MODELING, CASE STUDY: TABAS COAL MINE

被引：0
|
作者：
Najafi, M. [1 ]
Jalali, S. E. [1 ]
Sereshki, F. [1 ]
Bafghi, Yarahmadi [2 ]
机构：
[1] Shahrood Univ Technol, Fac Min Engn Petr & Geophys, Shahrood, Iran
[2] Yazd Univ, Dept Min & Met Engn, Yazd, Iran
来源：
SGEM 2009: 9TH INTERNATIONAL MULTIDISCIPLINARY SCIENTIFIC GEOCONFERENCE, VOL I, CONFERENCE PROCEEDING: MODERN MANAGEMENT OF MINE PRODUCING, GEOLOGY AND ENVIRONMENTAL PROTECTION | 2009年
关键词：
Pillar Strength; Coal Pillar; Mohr-Coulomb Strain- Softening;
D O I：
暂无
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Pillars are key structural columns in underground mining. They are usually made of in situ intact ores and do not have additional reinforcements. Their main function is temporary or permanent support of ore ceiling of rooms during excavation and mining. Coal pillar strength is usually estimated according to empirical formulae obtained from field observations. Todays, numerical models have found increasing use in pillar design. The FLAC3D Software based Mohr-Coulomb Strain Softening (MCSS) failure criterion was used to estimate pillar bearing capacity. By this study, its shown that pillars with 15 meter width in Tabas coal mine have 9.84 MPa strength and have the similar result by Salamon and Munro formula.
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页码：421 / +
页数：3
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