地—井激电法探测盲矿体的数字模拟研究
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摘要
地—井激电法在探测井旁盲矿有其独到的作用。本文通过地—井激电法的三维有限元数值模拟计算,研究了盲矿体在井中的激电响应,分析总结了井中的激电异常与盲矿体的相对位置关系,分析探测盲矿体的可行性,为地—井激电法探测井旁盲矿体提供理论依据。
利用有限元数值模拟算法,计算一次场及极化体存在时的总场,用等效电阻率法计算出地—井三极装置的视极化率。研究不同产状的高阻高极化、低阻高极化板状体的井中激电响应,分析了异常的特征及与极化体的对应关系。计算结果表明地—井激电法探测盲矿体是可行的,根据不同方位的井位观测到的视极化率异常结果,异常曲线的极大值点对应极化体的位置;利用本方法探测盲矿体是有范围的,超出这个范围异常极大值不明显;围岩和极化体之间电阻率差异对视极化率的影响是随着极化体电阻率增大,视极化率的异常幅度也会增大;异常曲线的极值点对应着板状极化体的顶端;同时,视极化率的曲线异常幅度与板状体的极化率大小成正比,极化体的极化率越高,井中视极化率异常也越大。
Surface - borehole IP in mine detection Blind Ore beside the borehole has its unique role. In this paper, Surface-borehole IP method of three-dimensional finite element simulation to study the Blind Ore bodies in boreholes IP response, summed up the boreholes of the IP anomaly and the relative position of blind ore, ore body blind analysis of detection The feasibility, Surface - borehole IP method detection Blind Ore body beside the boreholes and provide a theoretical basis.
Numerical simulation of the finite element method, the first field and polarization in the presence of the total field, with equivalent resistance method to calculate - the three electrodes installation of polarization. The occurrence of different high-polarization of the high resistance, low resistance high polarization of the plate borehole IP response of the unusual features of polarization and the corresponding relations. The results show that the - well IP method detection blind ore body is feasible, according to the different position of the well-observed polarization anomaly as a result, abnormal curve of the maximum points corresponding polarization of the location of the use of this method Blind detection of the ore body is beyond the scope of this very great value was not obvious; rock and polarization of the difference between resistance as the impact of polarization, with the rate increasing polarization of resistance, depending on a The rate of abnormal rate will be increased abnormal curve corresponding to the extreme point of the top plate polarization at the same time, depending on the polarization of unusual magnitude of the plate and the polarization is directly proportional to the size, polarization The polarization of the higher rate, the rate of abnormal well as the greater polarization.
利用有限元数值模拟算法,计算一次场及极化体存在时的总场,用等效电阻率法计算出地—井三极装置的视极化率。研究不同产状的高阻高极化、低阻高极化板状体的井中激电响应,分析了异常的特征及与极化体的对应关系。计算结果表明地—井激电法探测盲矿体是可行的,根据不同方位的井位观测到的视极化率异常结果,异常曲线的极大值点对应极化体的位置;利用本方法探测盲矿体是有范围的,超出这个范围异常极大值不明显;围岩和极化体之间电阻率差异对视极化率的影响是随着极化体电阻率增大,视极化率的异常幅度也会增大;异常曲线的极值点对应着板状极化体的顶端;同时,视极化率的曲线异常幅度与板状体的极化率大小成正比,极化体的极化率越高,井中视极化率异常也越大。
Surface - borehole IP in mine detection Blind Ore beside the borehole has its unique role. In this paper, Surface-borehole IP method of three-dimensional finite element simulation to study the Blind Ore bodies in boreholes IP response, summed up the boreholes of the IP anomaly and the relative position of blind ore, ore body blind analysis of detection The feasibility, Surface - borehole IP method detection Blind Ore body beside the boreholes and provide a theoretical basis.
Numerical simulation of the finite element method, the first field and polarization in the presence of the total field, with equivalent resistance method to calculate - the three electrodes installation of polarization. The occurrence of different high-polarization of the high resistance, low resistance high polarization of the plate borehole IP response of the unusual features of polarization and the corresponding relations. The results show that the - well IP method detection blind ore body is feasible, according to the different position of the well-observed polarization anomaly as a result, abnormal curve of the maximum points corresponding polarization of the location of the use of this method Blind detection of the ore body is beyond the scope of this very great value was not obvious; rock and polarization of the difference between resistance as the impact of polarization, with the rate increasing polarization of resistance, depending on a The rate of abnormal rate will be increased abnormal curve corresponding to the extreme point of the top plate polarization at the same time, depending on the polarization of unusual magnitude of the plate and the polarization is directly proportional to the size, polarization The polarization of the higher rate, the rate of abnormal well as the greater polarization.
引文
[1]陈玲等译.激发极化法的实验和理论[M].北京:地质出版社,1980
[2]傅良魁.激发极化法[M].北京:地质出版社,1983
[3]傅良魁.电法勘探教程[M],北京:地质出版社,1983
[4]黄智辉.井中激电地—井方式方位测量资料解释问题的探讨[J].物探与化探,1979(1)
[5]强健科.固定点源测深激电异常研究[J].地球物理学进展,2005(4)
[6]蔡柏林、黄智辉、谷守民.井中激发极化法[M].北京:地质出版社,1983
[7]阎立光等译.激发极化法电法勘探[M].北京:地质出版社,1983
[8]蔡柏林、黄智辉.井中激发极化法的数值模拟及其讨论[J].物探与化探,1979 (5)
[9]阮百尧、村上裕等.电阻率/极化率二维数据的反演程序[J].物探化探计算技术, 1999(2)
[10]宋振岭.井中激发极化法在金矿勘查中的应用[J].物探与化探,1992(1)
[11]伍义生、吴永礼等译.有限单元方法基础教程[M].电子工业出版社,2003.8
[12]罗延钟.激电异常的半定量解释方法[J].物探与化探,1975(3)
[13]徐世浙.地球物理中的有限单元法[M].北京:科学出版社,1994
[14]张赛珍等.影响矿化岩矿极化率(η)的因素及其作用规律[J].物探与化探,1972(1)
[15]飞箭软件公司.基于FEPG的有限元方法.北京飞箭软件公司,2003.3
[16]王冒成、邵敏.有限单元法基本原理和数值方法[M].北京:清华大学出版社,1995
[17]周熙襄等.电法勘探数值模拟技术[M].成都:四川科学技术出版社,1986
[18]黄俊革、阮百尧等.三维地电断面激发极化法有限元数值模拟[J].中国地质大学学报,2005(3)
[19]邓正栋等.稳定点电流源场三维有限差分正演模拟[J].石油物探,2001(1)
[20]李大潜等.有限元素法在电测井中的应用[M].北京:石油工业出版社,1980
[21]张继锋.井-地电阻率法确定油气藏边界研究.西安:长安大学硕士学位论文,2005
[22] J.Jeffrey、J.Daniels.Three-dimensinal resistivity and induced-polarization modeling using buried electrodes.Geophysics[J],1977(5)
[23]C.L.Arken et al. . Physical and computer modeling of induced polarization . Geophsical Prospecting[J], 1973(4)
[24]J.H.Coggon.Electromagnetic and electrical modeling by finite element method.Geographysics [J],1971(4)
[25] D.Bevc、H.F.Morrison.Borehole-to-surface electrical resistivity monitoring of a salt water injectionexperiment[J].GEOPHYSICS, 1991(6):769-777
[26] V.A.Komarov.Yhe importance of induced polarization method for the exploration of ore deposits[M].Geol.Suvey,canada Econ.Geol.Rep 26,1970
[27] I.S.Collett.Laboratory Investingation of overvoltage-in J.R.Wait Voltage research and geophysical application[M],1979
[28]L.O.Bacon,Induced polarization logging in the search for native copper[J].Geophysics,1979(1)
[29] A.Dey、H.F.Morrison . Resistivity modeling for arbitrarily shaped two-dimensional structures[J].Geophysical Prospecting, 1979(27)
[30] D.D.Snyder、R.M.Merkel.Analytic models for the interpretation of electrical surveys using buried current electrodes[J].Geophysics, 1973(38)
[2]傅良魁.激发极化法[M].北京:地质出版社,1983
[3]傅良魁.电法勘探教程[M],北京:地质出版社,1983
[4]黄智辉.井中激电地—井方式方位测量资料解释问题的探讨[J].物探与化探,1979(1)
[5]强健科.固定点源测深激电异常研究[J].地球物理学进展,2005(4)
[6]蔡柏林、黄智辉、谷守民.井中激发极化法[M].北京:地质出版社,1983
[7]阎立光等译.激发极化法电法勘探[M].北京:地质出版社,1983
[8]蔡柏林、黄智辉.井中激发极化法的数值模拟及其讨论[J].物探与化探,1979 (5)
[9]阮百尧、村上裕等.电阻率/极化率二维数据的反演程序[J].物探化探计算技术, 1999(2)
[10]宋振岭.井中激发极化法在金矿勘查中的应用[J].物探与化探,1992(1)
[11]伍义生、吴永礼等译.有限单元方法基础教程[M].电子工业出版社,2003.8
[12]罗延钟.激电异常的半定量解释方法[J].物探与化探,1975(3)
[13]徐世浙.地球物理中的有限单元法[M].北京:科学出版社,1994
[14]张赛珍等.影响矿化岩矿极化率(η)的因素及其作用规律[J].物探与化探,1972(1)
[15]飞箭软件公司.基于FEPG的有限元方法.北京飞箭软件公司,2003.3
[16]王冒成、邵敏.有限单元法基本原理和数值方法[M].北京:清华大学出版社,1995
[17]周熙襄等.电法勘探数值模拟技术[M].成都:四川科学技术出版社,1986
[18]黄俊革、阮百尧等.三维地电断面激发极化法有限元数值模拟[J].中国地质大学学报,2005(3)
[19]邓正栋等.稳定点电流源场三维有限差分正演模拟[J].石油物探,2001(1)
[20]李大潜等.有限元素法在电测井中的应用[M].北京:石油工业出版社,1980
[21]张继锋.井-地电阻率法确定油气藏边界研究.西安:长安大学硕士学位论文,2005
[22] J.Jeffrey、J.Daniels.Three-dimensinal resistivity and induced-polarization modeling using buried electrodes.Geophysics[J],1977(5)
[23]C.L.Arken et al. . Physical and computer modeling of induced polarization . Geophsical Prospecting[J], 1973(4)
[24]J.H.Coggon.Electromagnetic and electrical modeling by finite element method.Geographysics [J],1971(4)
[25] D.Bevc、H.F.Morrison.Borehole-to-surface electrical resistivity monitoring of a salt water injectionexperiment[J].GEOPHYSICS, 1991(6):769-777
[26] V.A.Komarov.Yhe importance of induced polarization method for the exploration of ore deposits[M].Geol.Suvey,canada Econ.Geol.Rep 26,1970
[27] I.S.Collett.Laboratory Investingation of overvoltage-in J.R.Wait Voltage research and geophysical application[M],1979
[28]L.O.Bacon,Induced polarization logging in the search for native copper[J].Geophysics,1979(1)
[29] A.Dey、H.F.Morrison . Resistivity modeling for arbitrarily shaped two-dimensional structures[J].Geophysical Prospecting, 1979(27)
[30] D.D.Snyder、R.M.Merkel.Analytic models for the interpretation of electrical surveys using buried current electrodes[J].Geophysics, 1973(38)