利用EH-4确定煤矿采空区的边界
|
摘要
在阐述煤矿地质灾害防治重要意义的基础上,分析高度机械化的煤矿矿井采空区边界及产生的地质灾害防治中的地球物理特征,通过工程实例说明,当有富水的断层和采空区引起的张性裂隙存在时,其目的体的电性呈现良导特征.煤矿开采后破坏了地层电性在横向上的均匀性和纵向上的正常递变规律.在起伏较大的山地区,使用电磁法探测不良地质体,并进一步研究它们的纵横向结构,证明该方法是有效的.
Emphasizing the importance of controlling geological disaster in coal mine,the features of gob edges in highly mechanized mine and control of geological disaster due to mining are analyzed geophysically.Practical exemplifications show that when the water-richened gob causes tensile fissures,the target geographical body presents good electric conductivity,damaging laterally the homogeneity of its electrical properties and making longitudinally its gradation abnormal.So,in obviously undulated mountain area,electromagnetic surveying is efficient to poor geographical bodies and the further investigation of their lateral structure.
Emphasizing the importance of controlling geological disaster in coal mine,the features of gob edges in highly mechanized mine and control of geological disaster due to mining are analyzed geophysically.Practical exemplifications show that when the water-richened gob causes tensile fissures,the target geographical body presents good electric conductivity,damaging laterally the homogeneity of its electrical properties and making longitudinally its gradation abnormal.So,in obviously undulated mountain area,electromagnetic surveying is efficient to poor geographical bodies and the further investigation of their lateral structure.
引文
[1]Huang H,Won I J.Conductivity and susceptibility mappingusing broadband electromagnetic sensors[J].Environ EngGeophys,2000,5(4):31-41.
[2]Sternberg B K,Birken R A.A new method of subsurfaceimaging—the LASI high frequency ellipticity system:systemtests and field surveys[J].Environ Eng Geophys,1999,4,(4):227-240.
[3]Witten A J,Calvert G.Characterizing the distribution ofnear-surface solution channels using electromagnetic inductionand ground penetrating radar[J].Environ Eng Geophys,1999,4,(1):35-43.
[4]徐白山.地震横波反射法探测含水洞穴的研究[J].东北大学学报(自然科学版),2006,27(1):84-87.(Xu B S.Detecting underground water-bearing caves byseismic transverse wave reflection method[J].Journal ofNortheastern University(Natural Science),2006,27(1):84-87.)
[5]伍岳.EH-4电磁成像系统在砂岩地区勘查地下水的应用研究[J].物探与化探,1999,23(5):335-346.(Wu Y.The application of EH-4 electromagnetic-imagesystem to ground-water exploration in sandstone areas[J].Geophysical&Geochemical Exploration,1999,23(5):335-346.)
[6]Haoping H,Douglas C F.Inversion of helicopterelectromagnetic data to a magnetic conductive layered earth[J].Geophysics,2003,68(8):1211-1223.
[7]Shives R B K,Charbonneau B W,Ford K L.The detectionof potassic alteration by gamma-ray spectrometry-recognitionof alteration related to mineralization[J].Geophysics,2000,65(5):2001-2011.
[8]Fitterman D V,Deszcz M,Helicopter E M.Mapping ofsaltwater intrusion in Everglades National Park,Florida[J].Explor Geophysics,1998,29(1):240-243.
[9]Bergmann T,Robertsson J O A,Holliger K.Finite-difference modeling of electromagnetic wave propagation indispersive and attenuating media[J].Geophysics,1998,63(3):868-889.
[10]徐白山.软地基中基桩的完整性测定[J].东北大学学报(自然科学版),2004,25(7):699-702.(Xu B S.New method in quality detecting of base poles inooze ground base[J].Journal of Northeastern University(Natural Science),2004,25(7):699-702.)
[2]Sternberg B K,Birken R A.A new method of subsurfaceimaging—the LASI high frequency ellipticity system:systemtests and field surveys[J].Environ Eng Geophys,1999,4,(4):227-240.
[3]Witten A J,Calvert G.Characterizing the distribution ofnear-surface solution channels using electromagnetic inductionand ground penetrating radar[J].Environ Eng Geophys,1999,4,(1):35-43.
[4]徐白山.地震横波反射法探测含水洞穴的研究[J].东北大学学报(自然科学版),2006,27(1):84-87.(Xu B S.Detecting underground water-bearing caves byseismic transverse wave reflection method[J].Journal ofNortheastern University(Natural Science),2006,27(1):84-87.)
[5]伍岳.EH-4电磁成像系统在砂岩地区勘查地下水的应用研究[J].物探与化探,1999,23(5):335-346.(Wu Y.The application of EH-4 electromagnetic-imagesystem to ground-water exploration in sandstone areas[J].Geophysical&Geochemical Exploration,1999,23(5):335-346.)
[6]Haoping H,Douglas C F.Inversion of helicopterelectromagnetic data to a magnetic conductive layered earth[J].Geophysics,2003,68(8):1211-1223.
[7]Shives R B K,Charbonneau B W,Ford K L.The detectionof potassic alteration by gamma-ray spectrometry-recognitionof alteration related to mineralization[J].Geophysics,2000,65(5):2001-2011.
[8]Fitterman D V,Deszcz M,Helicopter E M.Mapping ofsaltwater intrusion in Everglades National Park,Florida[J].Explor Geophysics,1998,29(1):240-243.
[9]Bergmann T,Robertsson J O A,Holliger K.Finite-difference modeling of electromagnetic wave propagation indispersive and attenuating media[J].Geophysics,1998,63(3):868-889.
[10]徐白山.软地基中基桩的完整性测定[J].东北大学学报(自然科学版),2004,25(7):699-702.(Xu B S.New method in quality detecting of base poles inooze ground base[J].Journal of Northeastern University(Natural Science),2004,25(7):699-702.)
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心