Prediction Method of Water-conducting Fractured Zone Height Based on the HHO-ELM Model
In order to accurately predict the development height of water-conducting fracture zone in 16 coal mining of Binhu Coal Mine,the measured data of 31 lower coal mining faces in North China Coal-field were collected,and five factors including mining height,mining depth,coal seam dip angle,tendency length and hard rock ratio coefficient were selected for comprehensive analysis.The Harris Hawk algorithm(HHO)is used to optimize the ELM neural network,and the HHO-ELM water-conducting fracture zone height prediction model is constructed.The model is applied to the prediction of the height of the water-con-ducting fracture zone in Binhu Coal Mine,and the prediction results are compared with the calculation re-sults of the standard formula and the measured results.The results show that the HHO-ELM model predicts that the development height of the water-conducting fracture zone in the 21603 working face of Binhu Coal Mine is 24.17 m,the calculation result of the standard formula is 18.58～29.78 m,and the measured result is 21.45～22.98 m.It can be seen that the model is used to predict the height of the water-conducting fracture zone,which is simple in calculation,strong in pertinence,and reliable in prediction accuracy.It provides a basis for the decision-making of roof water damage control in the lower group of coal mining in Binhu Coal Mine and similar geological conditions in North China Coalfield.
North China coalfiledheight of water-conducting fracture zoneHHO-ELM modelin-jection water leakage measuring metod
NETL
NSTL
万方数据
