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为了解决低透气性煤层注水难的问题,对水锤装置的峰值压力进行了研究。首先从柱塞冲击产生脉冲压力波的机理入手,利用柱塞冲击过程运动微分方程,得到柱塞活塞直径比影响脉冲压力波峰值压力的机理,随后通过试验研究柱塞活塞直径比对脉冲压力波压力峰值的影响,其有利于改进装置的柱塞结构以提高装置输出峰值压力,进而改善低透气性煤层瓦斯抽采和注水防尘的效果。
In order to solve the problem of difficult water injection in low permeability coal seam, the peak pressure of water hammer device was studied. First of all, starting from the mechanism of impulsive pressure wave generated by plunger impact, the differential pressure equation of plunger piston is used to derive the mechanism of plunger piston diameter ratio influencing the peak pressure of impulse pressure wave. Then the relationship between piston plunger diameter and impulse pressure wave Pressure peak, which is beneficial to improving the plunger structure of the device to increase the output peak pressure of the device, thereby improving the effect of gas extraction and water injection and dust prevention of low permeability coal seam.