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煤层瓦斯原位探测技术能够完整的记录煤层瓦斯流体的细节变化。利用煤层瓦斯原位探测技术,对寺河东四盘区3#煤储层流体压力进行测试。3#煤储层的宏观以及显微观察结果表明寺河3#煤储层裂隙系统具有很强的非均质性,抽放后的残留煤层瓦斯流体的运移具有明显的瞬时波动性;该残留气体的压力总体比较低。流体的运移在不同的煤岩体以及不同的裂隙发育带具有不同的特点,流体的压力变化也与裂隙带发育特征有关。
Coal seam gas in situ detection technology can complete record of coal seam gas fluid changes in detail. The coal seam gas in situ detection technology was used to test the fluid pressure of No.3 coal reservoir in Sihe district of Sihe. The macroscopic and microscopic observations of No 3 coal reservoir show that the fracture system of Tehe 3 # coal reservoir has strong heterogeneity and the transport of residual gas after drained coal has obvious transient fluctuation. The residual gas pressure is generally lower. The fluid migration has different characteristics in different coal and rock bodies and in different fracture development zones. The fluid pressure changes are also related to the fracture zone development characteristics.