潘二矿12223工作面底板太灰水害综合探查与解释

发布时间：2018-04-20 02:14

本文选题：底板富水区 + 数值模拟　；参考：《安徽理工大学》2017年硕士论文

【摘要】：淮南潘二矿A组煤3煤12223工作面内斜向断层发育,该面底板距太灰灰岩地层仅有20m左右,为确保工作面安全生产,需探查底板灰岩富水区分布情况,及时消除灰岩水害威胁。直流电法探测技术和音频电透视法对底板岩层富水区反应敏感,现已广泛应用于底板水害的探测。由于物探方法常具有多解性,需要采用综合物探方法,准确查明工作面底板岩层的富水区分布情况,对煤层底板灰岩水害防治研究工作具有较强的实际应用价值。文章结合已有的地质资料,针对潘二矿A组煤底板地层及岩性特征,通过电法数值模拟软件构建与矿区相似的地电模型,并对其进行正演模拟计算,从电场分布规律和视电阻率异常特征方面较好地反映了电法探测技术在底板岩层赋水性探测应用中的有效性与可靠性。论文根据A组煤12223工作面现场实际条件,采用综合物探方法对底板岩层电性分布特征进行研究,在已形成的工作面双巷选取三维电法及音频电透视法对底板岩层富水区进行探查。三维电法及高密度电法探测的低阻异常区沿巷道周边准确性较高,音频电透视法对工作面中部的相对富水区反映较灵敏。针对不同物探方向的特点综合考虑,同时结合工作面已知地质资料进行综合分析,对各低阻区进行划分圈定。探测结果表明:工作面探测范围总体富水性弱;依据电阻率值高低及影响深度大小,圈定5个相对富水区。工作面已有的钻孔探放水资料,验证了工作面底板水探测结果是可靠的,为潘二矿12223工作面及后续A组煤工作面的底板灰岩水害防治提供了指导。
[Abstract]:The inclined fault is developed in 12223 coal face of No. 3 coal group A in Pan No. 2 Coal Mine, Huainan, which is only about 20m from the limestone strata. In order to ensure the safe production of the coal face, it is necessary to explore the distribution of the water-rich area of limestone on the floor and eliminate the threat of limestone water hazard in time. The detection technology of direct current method and the method of audio frequency electric fluoroscopy are sensitive to the response of the water-rich area of the bottom rock, and have been widely used in the detection of the water damage of the bottom plate. Because geophysical prospecting methods are often multi-solvable, it is necessary to use comprehensive geophysical exploration method to accurately find out the distribution of water-rich areas in the face floor rock strata, which has a strong practical application value for the study on the prevention and control of water hazards of coal seam floor limestone. Combined with the existing geological data and in view of the strata and lithologic characteristics of coal floor of Group A in Paner Coal Mine, a geoelectric model similar to that of the mining area is constructed by means of the numerical simulation software of electric method, and the forward simulation calculation is carried out. From the aspects of electric field distribution law and abnormal characteristics of apparent resistivity, the validity and reliability of electrical detection technology in the application of water-bearing detection of floor rock are well reflected. According to the actual conditions of Group A 12223 coal face, this paper studies the electrical distribution characteristics of floor strata by using comprehensive geophysical exploration method. Three-dimensional electric method and audio frequency electric fluoroscopic method are selected to explore the water-rich area of the floor rock in the two roadways of the working face. The accuracy of the low resistivity anomaly area detected by three dimensional electric method and high density electric method is higher along the edge of roadway, and the audio frequency electric fluoroscopy is more sensitive to the relatively water-rich area in the middle of the face. According to the characteristics of different geophysical prospecting directions and combined with the known geological data of the working face, the low resistance areas are classified and delineated. The results show that the detection range of the working face is weak in general, and five relatively water-rich areas are delineated according to the resistivity value and the influence depth. The existing data of water exploration and discharge from boreholes in the working face verify that the detection results of the floor water in the working face are reliable and provide guidance for the prevention and control of the water hazard of the floor limestone in the 12223 face of Paner Coal Mine and the follow-up group A coal face.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD745

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