摘要
煤矿水害是矿井安全生产的重大灾害之一,顶板砂岩、灰岩、泥岩的电阻率差异明显,而富水性对砂岩、灰岩的电阻率影响较大,符合多频并行电法探测的地球物理依据,因此可以采用多频并行电法对工作面顶板富水情况进行探测。多频并行电法是以直流电法理论为基础,现场观测频率域电场信号,信噪比高,对工作面底板异常的平面分辨能力相对较好。通过对15309工作面顶板砂砾岩富水性探测及验证结果可知,多频并行电法是一种便捷有效的井下物探手段,能够为煤矿顶板防治水工作提供技术支撑,为煤矿安全开采提供地质保障,也可为其他煤矿类似水害探测及分析提供借鉴。
Water disaster in coal mine is one of the most serious disasters in coal mine safety production,the electrical resistivity of roof sandstone,limestone and mudstone is obviously different,but the resistivity of sandstone and limestone is greatly affected by water abundance,which coincides with the geophysical basis of multi frequency parallel electric detection. Therefore,multi frequency parallel electrical method can be used to detect the water enrichment in the roof of the working face. Multi frequency parallel electrical method is based on the theory of direct current electrical method,it can observe the electric field signals in frequency domain,and has high signalto-noise ratio,and also has a good plane resolution for the abnormity of the floor of the working face. By detecting and verifying the water rich characteristics of the roof glutenite on 15309 working face,it can be known that multi frequency parallel electrical method is a convenient and effective method for underground geophysical prospecting,can provide technical support for coal mine roof prevention and control of water work. It also can provide geological support for coal mine safety mining,and can also provide reference for other coal mine similar water disaster detection and analysis.
出处
《能源与环保》
2018年第1期21-26,共6页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
关键词
并行电法
防治水
回采工作面
物探
顶板
parallel electrical method
water control and prevention
coal winning face
geophysical prospecting
roof
