[1]吴学明,王苏健,张天军,等.煤层冲击倾向性评价的新指标体系[J].西安科技大学学报,2019,(05):782-789.[doi:10.13800/j.cnki.xakjdxxb.2019.0507]
 WU Xue-ming,WANG Su-jian,ZHANG Tian-jun,et al.New index of coal seam impact tendencies[J].Journal of Xi’an University of Science and Technology,2019,(05):782-789.[doi:10.13800/j.cnki.xakjdxxb.2019.0507]
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煤层冲击倾向性评价的新指标体系(/HTML)
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2019年05期
页码:
782-789
栏目:
出版日期:
2019-10-25

文章信息/Info

Title:
New index of coal seam impact tendencies
文章编号:
1672-9315(2019)05-0782-08
作者:
吴学明12王苏健12张天军3黄耀光3黄克军1
(1.陕西煤业化工技术研究院,陕西 西安 710065; 2.煤炭绿色安全高效开采国家地方联合工程研究中心,陕西 西安 710065; 3.西安科技大学 理学院,陕西 西安 710054)
Author(s):
WU Xue-ming12WANG Su-jian12ZHANG Tian-jun3HUANG Yao-guang3HUANG Ke-jun1
关键词:
冲击倾向性 损伤统计本构模型 动态损伤应变 盈余能指数变化率 最大损伤速率
Keywords:
impact tendencies constitutive model of damage statistics dynamic damage strain the rate of earnings index changes the rate of maximum damage
分类号:
TD 324.1
DOI:
10.13800/j.cnki.xakjdxxb.2019.0507
文献标志码:
A
摘要:
基于煤岩微元强度的韦伯分布假设和连续介质损伤力学理论,建立单轴压缩下考虑残余强度的损伤统计本构模型,修正了动态损伤应变计算式,结合损伤因子、损伤速率和损伤加速度研究了煤样的损伤演化规律和煤层冲击倾向性的评价指标,并利用最小二乘法对实验数据进行反演得到反映实验曲线的本构方程,且验证了其正确性。结果表明:考虑残余强度的损伤统计本构模型能较好地反映煤岩峰值强度后的应力-应变曲线的变化趋势和残余强度特征点,并可得到损伤速率的最大值; 修正后的动态损伤应变在间接表征冲击倾向性实验的动态破坏时间时可不再受加载方式的限制; 提出的盈余能指数变化率指标可综合衡量盈余能、峰后破坏过程损耗的应变能、动态破坏时间的变化情况,衡量煤层冲击倾向性; 以最大损伤速率、修正后的动态损伤应变和盈余能指数变化率构成的指标体系可作为评价煤层冲击倾向性的新方法。
Abstract:
Based on the assumption of weibull distribution of coal-rock micro-strength and continuum damage mechanics theory,a damage statistic constitutive model considering residual strength under uniaxial compression is established,and the dynamic damage strain calculation formula is modified.The damage evolution rule and the evaluation index of coal seam impact tendency are studied with damage factor,damage rate and damage acceleration.Further,by using the least squares method,the experimental data are retrieved to reflect the constitutive equation of the experimental curve,and the correctness of the model is verified.The results show that the damage statistic constitutive model considering residual strength can well reflect the change trend of stress-strain curve and the characteristic point of residual strength after the peak strength of coal and rock,and the maximum value of the damage rate can be obtained.The modified dynamic damage strain can no longer be restricted by the loading mode when it indirectly characterizes the dynamic failure time of the impact tendency experiment.The proposed change rate indexof surplus energy index can be used to measure the change of surplus energy,the strain energy and the dynamic damage time of post-peak damage process.It can also measure the impact tendency of coal seam.The index system composed of maximal damage rate,modified dynamic damage strain and surplus energy index change rate can be regarded as a new method to evaluate the impact tendency of coal seam.

参考文献/References:

[1] LIU Zhi-gang,CAO An-ye,GUO Xiao-sheng,et al.Deep-hole water injection technology of strong impact tendency coal seam:a case study in Tangkou coal mine[J].Arabian Journal of Geosciences,2018(11):1-12.[2]窦林名,何学秋.冲击矿压防治理论与技术[M].徐州:中国矿业大学出版社,2001.DOU Lin-ming,HE Xue-qiu.Theory and technology of rock burst prevention[M].Xuzhou:China University of Mining and Technology Press,2001.[3]蔡 武,窦林名,韩荣军,等.基于损伤统计本构模型的煤层冲击倾向性研究[J].煤炭学报,2011,36(2):346-351.CAI Wu,DOU Lin-ming,HAN Rong-jun,et al.Bursting liability of coal based on damage statistical constitutive model.[J].Journal of China Coal Society,2011,36(2):346-351.[4]Tsirel’ S V,Krotov N V.Probability interpretation of indirect risk criteria and estimate of rock-burst hazard in mining anthracite seams[J].Journal of Mining Science,2001,37(3):240-260.[5]中华人民共和国行业标准编写组.GT/T 25217.2—2010煤层冲击倾向性分类及指数的测定方法[S].北京:中国标准出版社,2010.The Professional Standards Compilation Group of Peoples Republic of China.GT/T25217.2—2010 Classification and laboratory test method on bursting liability of coal[S].Beijing:Standards Press of China,2010.[6]苏承东,袁瑞甫,翟新献.城郊矿煤样冲击倾向性指数的实验研究[J].岩石力学与工程学报,2013,32(2):3696-3704.SUN Ceng-dong,YUAN Rui-fu,ZAI Xin-xian.Experimental research on bursting liability index of coal samples of Chengjiao coal mine[J].Chinese Journal of Rock Mechanics and Engineering,2013,32(2):3696-3704.[7]唐礼忠,王文星.一种新的岩爆倾向性指标[J].岩石力学与工程学报,2002,21(6):874-878.TANG Li-zhong,WANG Wen-xing.New rock burst proneness index[J].Chinese Journal of Rock Mechanics and Engineering,2002,21(6):874-878.[8]郭建卿,苏承东.不同煤试样冲击倾向性试验结果分析[J].煤炭学报,2009,34(7):897-902.GUO Jian-qing,SU Cheng-dong.Analysis on experimental results of rock burst tendency of different coal samples[J].Journal of China Coal Society,2009,34(7):897-902.[9]潘一山,耿 琳,李忠华.煤层冲击倾向性与危险性评价指标研究[J].煤炭学报,2010,35(12):1975-1978.PAN Yi-shan,GENG Lin,LI Zhong-hua.Research on evaluation indices for impact tendency and danger of coal seam[J].Journal of China Coal Society,2010,35(12):1975-1978.[10]唐礼忠,潘长良,王文星.用于分析岩爆倾向性的剩余能量指数[J].中南工业大学学报,2002,33(2):129-132.TANG Li-zhong,PAN Chang-liang,WANG Wen-xing.Surplus energy index for analysing rock burst proneness[J].Journal of Central South University of Technology,2002,33(2):129-132.[11]姚精明,何福连,徐 军,等.冲击地压的能量机理及其应用[J].中南大学学报,2009,40(3):808-813.YAO Jing-ming,HE Fu-lian,XU Jun,et al.Energy mechanism of rock burst and its application[J].Journal of Central South University,2009,40(3):808-813.[12]姚精明,闫永业,李生舟,等.煤层冲击倾向性评价损伤指标[J].煤炭学报,2011,36(2):353-357.YAO Jing-ming,YAN Yong-ye,LI Sheng-zhou,et al.Damage index of coal seam rock burst proneness[J].Journal of China Coal Society,2011,36(2):353-357.[13]吴 政,张承娟.单向荷载作用下岩石损伤模型及其力学特性研究[J].岩石力学与工程学报,1996,15(1):55-61.WU Zheng,ZHANG Cheng-juan.Investigation of rock damage model and its mechanical behaviour[J].Chinese Journal of Rock Mechanics and Engineering,1996,15(1):55-61.[14]杨圣奇,徐卫亚,韦立德,等.单轴压缩下岩石损伤统计本构模型与试验研究[J].河海大学学报,2004,32(2):200-203.YANG Sheng-qi,XU Wei-ya,WEI Li-de,et al.Statistical constitutive model for rock damage under uniaxial compression and its experimental study[J].Journal of Hohai University,2004,32(2):200-203.[15]Cai W,Dou LM,Cao AY,et al.Application of seismic velocity tomography in underground coal mines:a case study of Yima mining area Henan China[J].Journal of Applied Geophysics,2014,109:140-149.[16]邓华锋,胡安龙,李建林,等.水岩作用下砂岩劣化损伤统计本构模型[J].岩土力学,2017,38(3):631-639.DENG Hua-feng,HU An-long,LI Jian-lin,et al.Rock and Soil Mechanics,2017,38(3):631-639.[17]代高飞,尹光志,皮文丽.单轴压缩荷载下煤岩的弹脆性损伤本构模型[J].同济大学学报(自然科学版),2004,32(8):986-989.DAI Gao-fei,YIN Guang-zhi,PI Wen-li.Research on damage constitutive model and evolution equation of coal under uniaxial compression[J].Journal of Tongji University(Natural Science),2004,32(8):986-989.[18]刘志平,石林英.最小二乘法原理及其MATLAB实现[J].中国西部科技,2008(17):33-34.LIU Zhi-ping,SHI Ling-ying.The principle of least square algorithm and its achievement by matlab[J].Science and Technology of West China,2008(17):33-34.

相似文献/References:

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 XUE Jun-hua,LIU Chao,WANG Long.Numerical simulation of influential factors for bursting liability in the combination of series of coal and rock[J].Journal of Xi’an University of Science and Technology,2016,(05):65.

备注/Memo

备注/Memo:
收稿日期:2019-06-30 责任编辑:刘 洁基金项目:国家自然科学基金(51374168)通信作者:吴学明(1984-),男,宁夏平罗人,博士,高级工程师,E-mail:wxmrock@163.com
更新日期/Last Update: 2019-10-25