铝土矿岩溶超前地质预报技术研究及应用
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摘要
瓦厂坪铝土矿的开采面临岩溶发育及岩溶水害等地质问题。针对铝土层这一相对顶底板围岩是低阻介质的情况,试验了多种物探方法,通过设计合理的矿井瞬变电磁和无线电波透视技术,绘制了相对应的视电阻率等值线拟断面图和电磁波吸收衰减系数等值线平面图,圈定出了工作面内部的岩溶区。结果表明:岩溶发育区在瞬变电磁法成果图中为低阻反应,在无线电波透视成果图中是电磁波高吸收区,2种方法所取得的成果对岩溶发育的位置反应一致,能有效地评价工作面岩溶发育和其导含水情况。
The karst development and the serious threat of Karst water damage in the Wachangping Bauxite Mine. The bauxite layer is a low-resistance medium in the case of a relatively high-resistance surrounding rock. A variety of geophysical methods have been tested. By designing a reasonable mine transient electromagnetic and radio wave perspective technique,the corresponding apparent resistivity contours are drawn. The cross-sectional view and the contour map of the electromagnetic wave absorption attenuation coefficient define the karst area inside the working face. The results show that the karst development area is a low-resistance reaction in the results of the transient electromagnetic method,and it is a high-absorption area of electromagnetic waves in the radio wave perspective results. The results of the two methods are consistent with the location of the Karst development,which can effectively evaluate the working surface. Karst development and its water-conducting condition.
The karst development and the serious threat of Karst water damage in the Wachangping Bauxite Mine. The bauxite layer is a low-resistance medium in the case of a relatively high-resistance surrounding rock. A variety of geophysical methods have been tested. By designing a reasonable mine transient electromagnetic and radio wave perspective technique,the corresponding apparent resistivity contours are drawn. The cross-sectional view and the contour map of the electromagnetic wave absorption attenuation coefficient define the karst area inside the working face. The results show that the karst development area is a low-resistance reaction in the results of the transient electromagnetic method,and it is a high-absorption area of electromagnetic waves in the radio wave perspective results. The results of the two methods are consistent with the location of the Karst development,which can effectively evaluate the working surface. Karst development and its water-conducting condition.
引文
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[3]时永志,吕国芳,宋锋,等.高铝黏土矿勘查开发问题分析[J].中国矿业,2015,24(7):8-10.
[4]宋煜.云南会泽铅锌矿区深部岩溶水特征及矿井涌水预测[D].昆明:昆明理工大学,2016.
[5]郭维君,崔晓艳,陈学军.泗顶铅锌矿区岩溶塌陷成因及治理对策分析[J].金属矿山,2009(12):41-43.
[6]胡宏清.喀斯特煤矿山矿井突水预测及水害防治研究[D].贵阳:贵州大学,2007.
[7]蒋宗林,田永华.综合物探技术在陷落柱富水性评价中的应用[J].煤炭科学技术,2015,43(11):139-142.
[8]邢修举,于景邨.煤矿综采工作面突水水源瞬变电磁探测技术及应用[J].能源与环保,2017,39(1):96-99.
[9]姜志海,岳建华,刘树才.多匝重叠小回线装置的矿井瞬变电磁观测系统[J].煤炭学报,2007,32(11):1152-1156.
[10]邢修举,蒋齐平,吴正飞,等.全空间定点三维瞬变电磁探测技术研究及应用[J].煤田地质与勘探,2018,46(S1):33-370.
[11]邱增强,刘志新.无线电波透视法在探测隐伏导含水构造中的应用[J].工程地球物理学报,2005(3):185-190.
[12]刘磊,赵兆,范涛.无线电波透视技术探查陷落柱的应用研究[J].物探与化探,2017,41(5):986-990.
[13]刘勇,孟庆彪,史心全,等.无线电波透视实测场强曲线差异化分析[J].中国科技信息,2017(22):50-51.
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