The fractal dimension of the microseismic activity before and after adjusting the distribution of working face in Jiulongpen region of Mentougou mine is analyzed.
本文对门头沟煤矿九龙盆地区人工开采活动调整前后的微震活动的分维结构变化进行了分析。
The testing observations indicate that such a recorder is a kind of useful instrument for microseismic observation, for observation of ground acoustics and for study present fault activity.
试验观测表明：这种仪器对监测极微震活动、地声观测和研究断层的现代活动性都是一种有用的仪器。
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