贵州井下煤层爆破地震波特征及其影响
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摘要
贵州省煤层赋存条件差,煤矿地质条件复杂。由于煤矿井下爆破采掘适应性强、初期投资小等特点,适应于地质条件复杂、断层多的源赋存复杂条件的中小型煤矿,因此目前贵州煤矿井下煤层采掘多采用爆破作业方式。但井下煤层爆破作业易引发煤尘、瓦斯爆炸、煤与瓦斯突出等矿山灾害,因此研究煤矿井下爆破规律及其对煤矿各方面安全的影响是十分必要和迫切的。通过比较选用小波包分析方法,对现场实验的井下煤层爆破地震波信号进行分析,得出其能量、频率等特征,并分析了其对前方煤体瓦斯抽放量及瓦斯压力的影响规律。
The coal seam conditions in Guizhou are poor,and the geological conditions of coal mine are complex.Since coal mine blasting has some characteristics like adaptability,small initial investment and other features,so it has been adapted in the small and medium coal mines,which have complex geological conditions and a lot of faults.Therefore most of coal mines in Guizhou use blasting practices for now.But coal mine blasting operations may easily lead to dust or gas explosions,coal and gas outburst mine disasters and so on.So study on its effect of coal mine blasting safety on all aspects of mine is very necessary and urgent.By comparing the relative methods,wavelet packet analysis method was selected.The blasting seismic wave signals of underground coal experimental site analysis.The energy,frequency and other characteristics obtained by on-site experiment were analyzed were drawn,and its influence laws on gas drainage volume and gas pressure of forward coal were analyzed.
The coal seam conditions in Guizhou are poor,and the geological conditions of coal mine are complex.Since coal mine blasting has some characteristics like adaptability,small initial investment and other features,so it has been adapted in the small and medium coal mines,which have complex geological conditions and a lot of faults.Therefore most of coal mines in Guizhou use blasting practices for now.But coal mine blasting operations may easily lead to dust or gas explosions,coal and gas outburst mine disasters and so on.So study on its effect of coal mine blasting safety on all aspects of mine is very necessary and urgent.By comparing the relative methods,wavelet packet analysis method was selected.The blasting seismic wave signals of underground coal experimental site analysis.The energy,frequency and other characteristics obtained by on-site experiment were analyzed were drawn,and its influence laws on gas drainage volume and gas pressure of forward coal were analyzed.
引文
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[13]陈志辉,夏虹,邬芝胜,等.小波变换在突变信号识别中的应用[J].核动力工程,2013,(2):62-67CHEN Zhi-hui,XIA Hong,WU Zi-shen,et al.Wavelettransform in the mutant signal recognition[J].NuclearPower Engineering,2013,(2):62-67
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[15]赵明生,朴志友,梁开水,等.爆破地震波时频域分析方法及应用[J].山东科技大学学报(自然科学版),2011,(4):22-28ZHAO Ming-sheng,PIAO Zhi-you,LIANG Kai-shui,etal.Blasting seismic wave frequency domain analysismethod and its application[J].Journal of Shandong U-niversity of Science and Technology(Natural Science),2011,(4):22-28
[16]马琳丽.非平稳信号的自适应时频分析研究[D].西安电子科技大学,2012
[2]刘兆金.贵州小型煤矿安全爆破对策分析[J].能源与环境2,013,(1):109-113LIU Zhao-jin.Guizhou miniature coal mine safety blastingcountermeasures[J].Energy and Environment,2013,(1):109-113
[3]徐勤玉,王涛,刘胜利.炮落、采煤机装煤工艺的应用[J].煤炭工程,2007,(6):51-52XU Qin-yu,WANG Tao,LIU Sheng-li.Shot downs,hearercoal technology applications[J].Coal Engineering2,007,(6):51-52
[4]张国辉.煤层应力状态及煤与瓦斯突出防治研究[D].阜新:辽宁工程技术大学,2005:2-25
[5]中华人民共和国国家标准编写组.GB6722-2003爆破安全规程[S].北京:中国标准出版社,2004
[6]贾虎.爆破动载作用下邻近硐室围岩稳定性的研究[D].合肥:安徽理工大学,2006:14-21
[7]张铁岗.矿井瓦斯综合治理技术[M].北京:煤炭工业出版社2,003:110-130
[8]凌同华.爆破震动效应及其灾害的主动控制[D].长沙:中南大学,2004:39-80
[9]杨小林,侯爱军,梁为民,等.隧道掘进爆破的损伤机理与振动危害[J].煤炭学报,2008,33(4):400-404YANG Xiao-lin,HOU Ai-jun,LIANG Wei-min,et al.Tunneling Blasting damage mechanism and vibration haz-ards[J].Journal of China Coal Society,2008,33(4):400-404
[10]李孝林,穆太升,董鑫.频率在爆破震害中的作用及其影响因素分析[J].工程爆破2,0017,(3):15-18LI Xiao-lin,MU Tai-sheng,DONG Xin.Frequencyburst damage role and its influencing factors[J].Engi-neering Blasting,2001,7(3):15-18
[11]何平,等.振动频率对冻土破坏之影响[J].岩土工程学报1,995,(3):78-80HE Ping,et al.Vibration frequency effects on perma-frost destruction[J].Chinese Jounal of GeotechnicalEngineering,1995,(3):78-80
[12]宋光明,曾新吾,陈寿如,等.基于小波包分析的爆破振动危害评价初探[J].安全与环境学报,2002,(4):23-26SONG Guang-ming,ZENG Xin-wu,CHEN Shou-ru,etal.Based on wavelet packet analysis Evaluation of blas-ting vibration hazards[J].Journal of Safety and Envi-ronment,2002,(4):23-26
[13]陈志辉,夏虹,邬芝胜,等.小波变换在突变信号识别中的应用[J].核动力工程,2013,(2):62-67CHEN Zhi-hui,XIA Hong,WU Zi-shen,et al.Wavelettransform in the mutant signal recognition[J].NuclearPower Engineering,2013,(2):62-67
[14]宋光明,曾新吾,陈寿如,等.爆破振动小波包时频特征提取与发展规律[J].有色金属,2003,(1):115-120SONG Guang-ming,ZENG Xin-wu,CHEN Shou-ru,etal.Blasting vibration wavelet packet time-frequency fea-ture extraction and development law[J].NonferrousMetals,2003,(1):115-120
[15]赵明生,朴志友,梁开水,等.爆破地震波时频域分析方法及应用[J].山东科技大学学报(自然科学版),2011,(4):22-28ZHAO Ming-sheng,PIAO Zhi-you,LIANG Kai-shui,etal.Blasting seismic wave frequency domain analysismethod and its application[J].Journal of Shandong U-niversity of Science and Technology(Natural Science),2011,(4):22-28
[16]马琳丽.非平稳信号的自适应时频分析研究[D].西安电子科技大学,2012
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