石膏矿房矿柱长期稳定性数值模拟研究  

Numerical Simulation Study on Long-term Stability of Rooms and Pillars in Gypsum Mines

作　　者：刘汝江[1] 张为民[1] 秦加付 张仰强[2] 

机构地区：[1]淄博矿业集团有限责任公司生产处,山东淄博255100 [2]山东科技大学矿山灾害预防控制教育部重点实验室,山东青岛266510

出　　处：《山东科技大学学报（自然科学版）》2010年第4期15-19,34,共6页Journal of Shandong University of Science and Technology(Natural Science)

摘　　要：研究矿房矿柱在上覆岩层荷载作用下的长期稳定性对于保证石膏矿安全生产具有重要意义。运用FLAC3D软件粘弹塑性本构模型(cvisc模型),对石膏矿房矿柱的长期稳定性进行了数值模拟研究。结果表明:巷道开挖后,顶底板移近量随着时间的延长而增加,最终趋于稳定;模拟10年内矿房顶底板移近量最大达到185.368 mm,两帮最大达到67.734 mm,但整体来说矿房变形量相对较小;模拟矿柱所受最大垂直应力,计算得到矿柱安全系数为1.84;矿房矿柱能够保持长期稳定。研究结果对类似条件下矿房矿柱的合理设计和稳定性分析具有重要指导意义。It is significant for the study of long-term stability of rooms and pillars under the act of the overlying strata loads to ensure the safe production in gypsum mines.In the paper,the numerical simulation study for long-term stability of rooms and pillars in gypsum mines was carried out by use of the viscous-elastic-plastic constitutive model（cvisc model） of FLAC3D software.The results showed that after roadway excavation,the roof and floor convergences increased with the extension of time and eventually tended to stabilization;although the simulated maximum convergence of roofs and floors in rooms and at the sides of rooms reached 185.368 mm,67.734 mm within 10 years respectively,the deformations of rooms in whole were relatively small;the safety factor of ore pillar obtained by simulating the maximum vertical stress was 1.84;all above showed that the rooms and pillars could keep stability for a long time.The research results are of great significance for the reasonable design and stability analysis of rooms and pillars in similar conditions.

关 键 词：石膏 矿房矿柱 长期稳定性 cvisc蠕变模型 数值模拟 

分 类 号：TD853[矿业工程—金属矿开采]