地震CT技术在采煤工作面的应用研究

Study on Seismic CT Technology Applied to Coal Mining Face

基于近年来在多个采煤工作面开展的实测研究结果,论述了地震CT技术在采煤工作面进行不同目的探测时的应用原理、方法及解释原则。研究表明:基于地震波波速异常率分布可以对工作面开展冲击危险性评价,确定冲击危险区域;根据地震波波速条带异常分布规律,并结合相关地质资料,可开展工作面内断层展布情况精探;利用工作面前方波速分区特征,可进行工作面超前支承压力分布划定。

Based on the site measured study results of the seismic CT technology applied to several coal mining faces in the recent years, the paper stated the application principle, method and explanation of the seismic technology applied to coal mining face for different pur- pose detections. The study showed that based on the abnormal rate distribution of the seismic velocity, an evaluation on the mine pressure bumping danger of the coal mining face was conducted and the mine pressure bumping danger area was determined. According to the ab- normal distribution law of the seismic wave velocity band and in combination with the related geological information, a detail exploration of the faults in the coal mining face could be conducted. With the application of the wave velocity zone features in front of coal mining face, the distribution of the pilot support pressure in front of the coal mining face could be divided.