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金属矿山 ›› 2016, Vol. 45 ›› Issue (08): 63-68.

• 采矿工程 • 上一篇    下一篇

煤岩渗流-蠕变耦合试验研究

何峰1,李彬1,2,王振伟3,于洋1,唐治1   

  1. 1.辽宁工程技术大学力学与工程学院,辽宁 阜新 123000;2.神东天隆集团武家塔露天煤矿,内蒙古 鄂尔多斯 017209;3煤炭科学研究总院沈阳研究院,辽宁 抚顺 113122
  • 出版日期:2016-08-15 发布日期:2016-08-31
  • 基金资助:

    * 国家自然科学基金项目(编号:11202091),辽宁省教育厅科技研究项目(编号:L2015218)。

Experimental Study on Seepage-creep Coupling of Coal Rock

He Feng1,Li Bin1,2,Wang Zhenwei3,Yu Yang1,Tang Zhi1   

  1. 1 School of Mechanics and Engineering,Liaoning Technical University,Fuxin 123000,China;2 Wujiata Open-pit Mine of Shendong Tianlong Group,Erdos 017209,China;3.Shenyang Branch of China Coal Research Institute,Fushun 113122,China
  • Online:2016-08-15 Published:2016-08-31

摘要: 岩石在渗流作用下的蠕变为工程的长期稳定带来了诸多不利影响。研制一种可实现围压加载、轴压加载和空隙水压加载的岩石渗流-蠕变耦合试验装置,进行岩石渗流与蠕变的耦合试验,探讨岩石在渗流作用下的蠕变特性。试验得出:在固定水压和围压的情况下,煤岩轴压对试件弹性形变作用随轴压增加而降低;轴向的瞬时变形随轴压增大而增大;渗流量随轴压升高而降低。在轴压和围压固定的情况下,渗流量和蠕变量随水压的增大而增大,渗流对试件蠕变会产生一定的影响,蠕变也影响渗流量。

关键词: 煤岩渗流, 煤岩蠕变, 耦合, 试验装置

Abstract: The creep of rock under the action of seepage has brought many adverse effects on the long-term stability of engineering.A kind of rock seepage-creep coupling test device is developed,which can realize confining pressure loading,axial loading and void hydraulic loading.It is used to conduct rock seepage-creep coupling test to discuss the creep properties of rock under the action of seepage.The results showed that: Under the condition of constant hydraulic pressure and confining pressure,the influences of axial compression on elastic deformation of specimen decrease with axial compression increasing.The axial instantaneous deformation increases with axial compression increasing.The seepage discharge decreases with the increase of axial compression.Under the condition of constant axial compression and confining pressure,the seepage discharge and creep deformation increase with the hydraulic pressure increasing.The seepage discharge has a certain effect on the creep of specimen,and the creep can also affect the seepage discharge.

Key words: Coal rock seepage, Coal rock creep, Coupling, Test device