下组煤底板导水裂隙带综合物探技术研究

Study on Comprehensive Geophysical Prospecting Technology for Water Guiding Fracture Zone on Lower Coal Group Floor

团柏矿水文地质条件复杂,开采的11~#煤层带压程度高,距离奥灰含水层较近。为探明11-101工作面内部构造发育情况、底板下奥灰含水层的富水性,采用无线电透视法、音频电透视法、直流电四极测深法等对工作面底板下40 m内奥灰层的富水性进行探查,综合分析物探成果可以看出,Y_1、Y_4、Y_5异常区奥灰层富水性较强。该综合物探手段为工作面后续钻探提供精确耙区,为矿井防治水提供精确的地质资料。

The hydrological and geological conditions in Tuanbai coal mine are very complex with the No. 11 coal seam which is close to the ordovician bearing higher aquifer pressure. A group of prospecting methods are introduced to find out the internal tectonic development inside coal seam of 11-101 working face,the water-richness of the aquifer which is 40 m under the floor,these instruments including radio perspective method,audio electro-perspective method,direct current quadrupole method. Comprehensive analysis of the geophysical prospecting show that some zones are unnormally rich in water content,they are the Y1,Y4,and Y5. The integrated application of the geophysical prospecting is helpful for the targeted drilling in next working stage,and provide accurate geological data for mining and water management.