基于深部软弱煤岩条件下巷道蠕变规律的数值模拟分析
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摘要
随着我国采矿业的发展,煤炭开采整体上迈入地下深部开采阶段。在深部矿井软弱围岩环境中,巷道的蠕变破坏成为限制我国开采业发展的重要限制因素。通过FLAC 3D软件采用控制变量法分别对不同巷道尺寸、原岩应力和围岩黏聚力下巷道水平和竖直方向的蠕变位移值进行数值模拟,根据软件模拟出来的结果研究水平和竖直方向的位移随时间变化的关系,并通过总结分析得出规律性的结论。
With the development of mining industry, coal mining has roughly entered the deep underground mining stage in China. In the weak surrounding rock environment of deep mine, the creep failure of roadway has become an important limiting factor to restrict the development of the mining industry in China. In this paper, the creep displacement values of roadways in different directions which are under different roadway sizes, original rock stress and cohesion of surrounding rock are simulated by FLAC 3 D software, and the relationship between horizontal and vertical displacement and time is studied according to the simulation results.
With the development of mining industry, coal mining has roughly entered the deep underground mining stage in China. In the weak surrounding rock environment of deep mine, the creep failure of roadway has become an important limiting factor to restrict the development of the mining industry in China. In this paper, the creep displacement values of roadways in different directions which are under different roadway sizes, original rock stress and cohesion of surrounding rock are simulated by FLAC 3 D software, and the relationship between horizontal and vertical displacement and time is studied according to the simulation results.
引文
[1]康红普.深部煤矿应力分布特征及巷道围岩控制技术[J].煤炭科学技术,2013,41(9):12-17.
[2]高亚辉,徐嘉辰,胡福祥,等.大浞河铁矿软岩巷道围岩蠕变的黏弹性参数反演[J].金属矿山,2017(7):51-54.
[3]程伟,柏建彪,齐中立.松软厚煤层巷道围岩稳定原理与控制技术研究[J].煤炭科技,2010(2):4-6.
[4]高文华,刘正,张志敏.基于FLAC3D的粉砂岩压缩蠕变试验数值模拟研究[J].土木工程学报,2015,48(3):96-102.
[5]许年春,杨小院,秦娟.岩石单轴受压体应变与长期强度关系[J].辽宁工程技术大学学报(自然科学版),2012,31(3):358-361.
[6]梁冰,张涛,王俊光,等.片麻岩蠕变特性试验研究[J].实验力学,2018,33(3):451-460.
[7]经来旺,梁东伟,董继华.高应力软岩巷道蠕变控制机理及支护技术[J].煤矿安全,2015,46(9):159-161.
[8]张周鑫,刘丽红.深部巷道围岩蠕变的数值模拟[J].黑龙江科技学院学报,2013,23(6):519-522.
[2]高亚辉,徐嘉辰,胡福祥,等.大浞河铁矿软岩巷道围岩蠕变的黏弹性参数反演[J].金属矿山,2017(7):51-54.
[3]程伟,柏建彪,齐中立.松软厚煤层巷道围岩稳定原理与控制技术研究[J].煤炭科技,2010(2):4-6.
[4]高文华,刘正,张志敏.基于FLAC3D的粉砂岩压缩蠕变试验数值模拟研究[J].土木工程学报,2015,48(3):96-102.
[5]许年春,杨小院,秦娟.岩石单轴受压体应变与长期强度关系[J].辽宁工程技术大学学报(自然科学版),2012,31(3):358-361.
[6]梁冰,张涛,王俊光,等.片麻岩蠕变特性试验研究[J].实验力学,2018,33(3):451-460.
[7]经来旺,梁东伟,董继华.高应力软岩巷道蠕变控制机理及支护技术[J].煤矿安全,2015,46(9):159-161.
[8]张周鑫,刘丽红.深部巷道围岩蠕变的数值模拟[J].黑龙江科技学院学报,2013,23(6):519-522.