【摘要】 在各种强干扰条件下,采用电磁法准确探查煤矿积水采空区是一个难点。采用瞬变电磁法和高密度电阻率法2种方法巧妙地相互配合、合理化去噪,探查了陕北侏罗纪煤田某矿4^-2煤42101—42104工作面采空区积水范围。对2种勘探方法所取得的数据中的各种干扰采用合理探测方法,能够有效规避强干扰,利用限差、拟合与多点圆滑相结合的方法对较小的干扰进行去噪处理,结合4^-2煤层已知的水文、地质资料,准确解释了测区内4^-2煤层采空积水区分布范围。钻探结果表明,该物探结果与实际吻合。更多还原

【Abstract】 It is a difficult point to use the electromagnetic method to accurately detect the mined-out area of coal mine water under various strong interference conditions.In this paper,the transient electromagnetic method and the high-density resistivity method were used to coordinate and rationalize the denoising,and the water accumulation area of the 42101～42104 working face of a mine of 4^-2 coal in a Jurassic coal field in northern Shaanxi was explored.By using the reasonable detection method to effectively avoid strong interference,the various interferences in the data obtained by the two exploration methods were combined with the method of tolerance,fitting and multi-point smoothing to deal with small interference denoising.Combined with the known hydrological and geological data of the 4^-2 coal seam,the distribution range of the mined water in the 4^-2 coal seam in the survey area was accurately explained.The drilling results indicated that the geophysical results were consistent with the actual conditions.更多还原