卸轴压条件下原煤变形及渗透特性实验研究

doi:10.13722/j.cnki.jrme.2015.1562

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Abstract Based on domestic-developed triaxial servo-controlled seepage equipment for thero-fluid-solid coupling of coal containing methane，the deformation and permeation experiment on row coal was performed under different initial unload levels. The results show that，in the process of unloading axial stress，the relationship between axial stress and strain of coal contained gas is expressed by quadratic functions，and the resilience deformation of coal containing methane decreases with the increase of initial load level. The ascent rate of the penetration rate of raw coal increases with the decrease of axial pressure. In the process of unloading axial stress，the penetration rate of raw coal becomes mild with the increase of initial load level. And there is a better similarity of the change of gas permeability in linear elastic stage. Gas antireflective effect weakens with the increase of initial load level. The relationship between increment of relative permeability at unloading unit stress and the initial stress can be described by logarithmic function. In the process of unloading axial stress，the growth trend of anti-reflection rate gradually weakens with the increase of initial load level.

Key words： rock mechanics；unload axial stress；raw coal；deformation；seepage characteristics；mining- enhanced permeability

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2015.1562 OR https://rockmech.whrsm.ac.cn/EN/Y2016/V35/IS2/3689

[1]	叶建平，史保生，张春才. 中国煤储层渗透性及其主要影响因素[J].煤炭学报，1999，24(2)：118-122.(YEJianping，SHIBaosheng，ZHANGChuncai.Coal reservoir permeability and its controlled factors in China[J]. Journal of China Coal Society，1999，24(2)：118-122.(in Chinese))
[2]	缪协兴，钱鸣高. 中国煤炭资源绿色开采研究现状与展望[J]. 采矿与安全工程学报，2009，26(1)：1-14.(MIAO Xiexing，QIAN Minggao. Research on green mining of coal resources in China：current status and future prospects[J]. Journal of Miningand Safety Engineering，2009，26(1)：1-14.(in Chinese))
[3]	石必明，刘泽功. 保护层开采上覆煤层变形特性数值模拟[J]. 煤炭学报，2008，33(1)：17-22.(SHI Biming，LIU Zegong. Numerical simulation of the upper coal and rock deformation characteristic caused by mining protecting stratum[J]. Journal of China Coal Society，2008，33(1)：17-22.(in Chinese))
[4]	赵洪宝，汪昕. 卸轴压起始载荷水平对含瓦斯煤样力学特性的影响[J]. 煤炭学报，2012，37(2)：259-263.(ZHAO Hongbao，WANG Xi. Effect of initial load level of axial unloading on mechanical properties of coal contained gas[J].Journal of China Coal Society，2012，37(2)：259-263.(in Chinese))
[5]	张农，袁亮，王成，等. 卸压开采顶板巷道破坏特征及稳定性分析[J]. 煤炭学报，2011，36(11)：1784-1789.(ZHANG Nong，YUAN Liang，WANG Cheng，etal. Deformation characteristics and stability analysis of roof roadway in destressed mining[J]. Journal of China Coal Society，2011，36(11)：1784-1789.(in Chinese))
[6]	李青松，衡献伟. 近距离突出煤层群合理开采顺序优选方法[J]. 煤炭工程，2015，47(10)：12-14.(LI Qingsong，HENG Xianwei. Optimal selection method of reasonable mining program for close distance coal seam group[J].Coal Engineering，2015，47(10)：12-14.(in Chinese))
[7]	卢平，袁亮，程桦，等. 低透气性煤层群高瓦斯采煤工作面强化抽采卸压瓦斯机理及试验[J]. 煤炭学报，2010，35(4)：580-585.(LU Ping，YUAN Liang，CHENG Hua，et al. Theory and experimental studies of enhanced gas drainage in the high gas face of low permeability coalmulti-seems[J].Journal of China Coal Society，2010，35(4)：580-585.(in Chinese))
[8]	程远平，周德永，俞启香，等. 保护层卸压瓦斯抽采及涌出规律研究[J]. 采矿与安全工程学报，2006，23(1)：12-18.(CHENG Yuanping，ZHOU Deyong，YU Qixiang，et al. Research on extraction and emission laws of gas for pressure-relief in protecting coal seams[J] Journal of Miningand Safety Engineering，2006，23(1)：12-18(in Chinese))
[9]	胡国忠，王宏图，李晓红，等. 急倾斜俯伪斜上保护层开采的卸压瓦斯抽采优化设计[J]. 煤炭学报，2009，34(1)：9-14.(HU Guozhong，WANG Hongtu，LI Xiaohong，et al. Optimization design on extracting pressure-relief gas of steepinclined up protective layer with pitching oblique mining[J]. Journal of China Coal Society，2009，34(1)：9-14.(in Chinese))
[10]	夏红春，程远平，柳继平. 远程覆岩卸压变形及其渗透性研究[J]. 西安科技大学报，2006，26(1)：10-14.(XIA Hongchun，CHENG Yuanping，LIU Jiping. Deformation and permeability characteristics caused by pressure-relief of long-distance strata[J].Journal of Xi¢an University of Science and Technology，2006，26(1)：10-14.(in Chinese))
[11]	杨天鸿，徐涛，刘建新，等. 应力-损伤-渗流耦合模型及在深部煤层瓦斯卸压实践中的应用[J]. 岩石力学与工程学报，2005，24(16)：2900-2905.(YANG Tianhong，XU Tao，LIU Jianxin，et al. Coupling model of stress-damage-flow and its application to the investigation of instantaneous seepage mechanism for gas during unloading in coal seam with depth[J].Chinese Journal of Rock Mechanics and Engineering，2005，24(16)：2900-2905.(in Chinese))
[12]	俞启香，程远平，蒋承林，等. 高瓦斯特厚煤层煤与卸压瓦斯共采原理及实践[J]. 中国矿业大学学报，2004，33(2)：3-7.(YU Qixiang，CHENG Yuanping，JIANG Chenglin，et al. Principles and applications of exploitation of coal and pressure relief gas in thick and high-gas seams[J].Journal of China University of Mining andTechnology，2004，33(2)：3-7.(in Chinese))
[13]	程远平，俞启香. 煤层群煤与瓦斯安全高效共采体系及应用[J]. 中国矿业大学学报，2003，32(5)：5-9.(CHENG Yuanping，YU Qixiang.Deformation and permeability characteristics caused by pressure-pelief of long-distance strata[J].Journal of China University of Mining andTechnology，2003，32(5)：5-9.(in Chinese))
[14]	王家臣，赵洪宝. 卸轴压条件下含瓦斯煤力学及瓦斯流动特性试验研究[C]//煤炭科学与技术研究论文集.[S. l.]：[s. n.]，2010：6.(WANG Jiachen，ZHAO Hongbao. Experimental study of mechanical properties and gas flow characteristics of coal contained gas under unloading axial stress[C]// Selected Papers on Coal Science and Technology. [S. l.]：[s. n.]，2010：6.(in Chinese))
[15]	YIN G，LI M，WANG JG，et al. Mechanical behavior and permeability evolution of gas in filtrated coals during protective layer mining [J]. International Journal of Rock Mechanics and Mining Sciences，2015，80：292-301.
[16]	赵洪宝，汪昕，张鹏. 线弹性阶段卸轴压煤样内瓦斯流动特性试验研究[J]. 岩土力学，2012，33(5)：1347-1351.(ZHAO Hongbao， WANG Xi，ZHANG Peng. Experimental study of gas flow characteristics of coal sample under unloading axial stress in linear elastic stage[J].Rock and Soil Mechanics，2012，33(5)：1347-1351.(in Chinese))
[17]	彭瑞东，鞠杨，高峰，等. 三轴循环加卸载下煤岩损伤的能量机制分析[J].煤炭学报，2014，39(2)：245-252.(PENG Ruidong，JU Yang，GAO Feng，et al. Energyanalysisondamage ofcoalundercyclicaltriaxial loadingandunloadingcondition[J]. Journal of China Coal Society，2014，39(2)：245-252.(in Chinese))
[18]	许江，李波波，周婷，等. 循环荷载作用下煤变形及渗透特性的试验研究[J]. 岩石力学与工程学报，2014，33(2)：225-234.(XU Jiang，LI Bobo，ZHOU Ting，et al. Experimental study of deformation and seepage characteristics of coal under cyclic loading[J].Chinese Journal of Rock Mechanics and Engineering，2014，33(2)：225-234.(in Chinese))
[19]	尹光志，李广治，赵洪宝，等. 煤岩全应力-应变过程中瓦斯流动特性试验研究[J]. 岩石力学与工程学报，2010，29(1)：170-175.(YIN Guangzhi，LI Guangzhi，ZHAO Hongbao，et al.Experimental research on gas flow properties of coal specimens in complete stress-strain process[J].Chinese Journal of Rock Mechanics and Engineering，2010，29(1)：170-175.(in Chinese))
[20]	林柏泉，周世宁. 含瓦斯煤体变形规律的实验研究[J]. 中国矿业学院学报，1986，(3)：12-19.(LIN Boquan，ZHOU Shining.Experimental study on deformation law of coal containing gas[J]. Journal of China University of Mining andTechnology，1986，(3)：12-19.(in Chinese))
[21]	HARPALANI S，SCHRAUFNAGEL R A. Shrinkage of coal matrix with release of gas and its impact on permeability of coal[J]. Fuel，1991，69(5)：551-556.
[22]	谢和平，高峰，周宏伟，等. 煤与瓦斯共采中煤层增透率理论与模型研究[J]. 煤炭学报，2013，38(7)：1101-1108.(XIE Heping，GAO Feng，ZHOU Hongwei，et al. On theoretical and modeling approach to mining-enhanced permeability for simultaneous exploitation of coal and gas[J]. Journal of China Coal Society，2013，38(7)：1101- 1108.(in Chinese))