Remote liquid supply pipeline for fully mechanized coal mine face
In order to improve the mining efficiency, reduce the amount of roadway excavation, and enhance the safety of mine production, based on the distributed parameter model, this paper studies the remote liquid supply pipeline and remote liquid supply technology in the fully mechanized mining face of the working face coal mine. Firstly, the AMESIM software is used to establish the remote liquid supply pipeline and long-distance liquid supply model of the fully mechanized coal mine face, and then the simulation calculation is carried out for various situations, and finally the long-distance liquid supply scheme is designed. Through research, the long-distance liquid supply scheme can provide a liquid supply distance of 1500m for the fully mechanized mining face, which basically meets the needs of the mining face.
Long-distance liquid supply or remote liquid supply pipeline of fully mechanized coal mine face needs to solve the problem of pipeline pressure loss through reasonable selection of the pipe diameter of the liquid supply pipeline. The key to the reasonable selection of the pipe diameter is that when the liquid is supplied over a long distance, the pressure loss of the pipeline must be within the scope of the engineering requirements. The mathematical model of the pipeline is divided into a centralized parameter model and a distributed parameter model. If the centralized parameter model is used for the pressure loss calculation of the long-distance liquid supply pipeline, the accuracy is poor, and it needs to be based on a more realistic distributed parameter model; the calculation method of the distributed parameter model usually adopts the frequency domain analysis method, and the calculation process is quite complicated, as Designers bring great inconvenience, need to rely on computer simulation software AMESIM [1] to carry out design calculations.
The long-distance liquid supply pipeline model in AMESIM can be simplified
is the model in which the two ends of a long pipeline are the constant pressure source and the constant current source respectively, such as
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