矿井防尘供水管网水力特性的相似性研究
Similar Experimental Study on Hydraulic Characteristics of Mine Dustproof Water Supply Network
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摘要: 为了研究井下工作面水压受供水管网中水量变化的影响，找出工作面水压变化的大致范围，以便在水压降到正常供水临界点前采取措施，通过变态相似理论并结合试验场地情况，推导出防尘供水管网相似准则数，以此搭建相似试验模型，并通过试验数据验证了模型的相似性。然后在此模型上通过试验来进行管网水量水压相关性的研究，并通过函数拟合的方式来对试验结果进行拟合。结果表明，与选定工作面共用管段越多，水量变化时，对该工作面水压的影响越大。Abstract: In order to study the influence of water quantity change in water supply network on underground working face water pressure, and find the approximate range of water pressure change so as to take measures before the water pressure drops to the normal water supply critical point, based on the theory of abnormal similarity and the experimental site, we deduced the similarity criterion number of dustproof water supply pipe network; on this account, we set up a similar experimental model and verified by experimental data. And then on this model, we study the correlation of water volume and pressure through the experiment, and use the function fitting method to carry out fitting for the experimental results. The results show that the more the pipe section shared with the selected working face, the greater the influence of the change of water quantity on the water pressure of the working face.
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