Method for electrically forecasting danger in underground tunneling engineering
A technology of advanced forecasting and hidden dangers, applied in earth drilling, re-radiation, geophysical measurement, etc., can solve the problems of difficult instrument processing, inconvenient construction coordination, expensive instruments and equipment, etc., to achieve convenient construction coordination, early warning and forecasting The effect of low cost and simple electrode arrangement
Inactive Publication Date: 2010-05-12
CENT SOUTH UNIV
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The invention discloses a method for electrically forecasting a danger in underground tunneling engineering, which comprises: building an approximately even current field in the direction of a tunnel or a laneway by burying long-distance fixed-source first and second power supply electrodes underground in the direction of the tunnel and the laneway; measuring and recording current field change under the background of the approximately even current field by using a measuring electrode buried in tunnel heading face of the laneway and a measuring electrode arranged in or outside the tunnel; and predicating and forecasting a danger around the tunnel heading face according to a law for the change of the electric field. The method has the advantages that: an electrical instrument can be placed in ground station for observation; intra-laneway power supply is avoided; the arrangement of the electrodes is convenient; and the early warning and forecasting cost is low. The method can be widely used in the field of projections involving laneway or tunnel construction, such as coal mine, mine production, communication, water conservancy and hydropower and subway projections.
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