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Preventing water condition of coal floor reflected by audio-frequency electrical penetration(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2005年第03期
Page:
68-71
Research Field:
Publishing date:

Info

Title:
Preventing water condition of coal floor reflected by audio-frequency electrical penetration
Author(s):
LI Dong-lin; JIANG Zhen-quan; YANG Dong-liang
School of Resources and Earth Sciences, China University of Mining and Tchnology, Xuzhou 221008, China
Keywords:
audio-frequency electrical penetration;  coal floor;  preventing water; drill hole;  electrical prospecting
PACS:
P631.3
DOI:
-
Abstract:
By analysing the detection effect of thirty-meter-deep and fifty-meter-deep interface at 2702 working face of Yangcun mine,this paper studied the preventing water condition of coal floor by the audio-frequency electrical penetration(AFEP). According to the structure of terrane and exploring water result of coal floor disclosed by hydrology drill hole,it is demonstrated that there ex- ists strong relationship among abnormal apparent conductivity,crack in rock stratum and the extent of filled waterin crack,and there exists obvious abnormal apparent conductivities between crack in rock and the connection place of aquifer.The anslysis indicated that the detection by AFEP could accurately image terrane preventing water condition of the coal floor.

References:

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Memo

Memo:
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Last Update: 1900-01-01