Multiple regression method for working face mining pressure prediction based on hydraulic support monitoring dataset

被引:5
作者
Dong, Jianjun [1 ,2 ]
Xie, Zhengquan [1 ,2 ]
Jiang, Hao [1 ,2 ]
Gao, Ke [1 ,2 ]
机构
[1] Liaoning Tech Univ, Coll Safety Sci & Engn, Huludao, Peoples R China
[2] Liaoning Tech Univ, Key Lab Mine Thermodynam Disasters & Control, Minist Educ, Huludao, Peoples R China
基金
中国国家自然科学基金;
关键词
coal mine roof stability; comprehensive working face; hydraulic support; machine learning; multiple linear regression; roof breakage; mining pressure; pressure prediction; MODEL;
D O I
10.3389/feart.2023.1114033
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
Introduction: In the coal mining process, the intense mining pressure is an important factor hindering the safe and efficient production of the working face. In severe cases, it causes deformations in roadways such as roof breakages and rockbursts, and leads to instability. This can result in the roof falling over a large area and the coal wall, thereby inducing dynamic disasters. These aspects have restricted the economic benefits of coal.Methods: In this study, we set four model limitations based on the limited scope of action of the mining pressure itself and the quantitative relationships between mining pressures in different regions. A multiple linear regression model with these limitations is proposed for predicting the mining pressure for preventing roof breakages and rockbursts. Based on a hydraulic support monitoring dataset from a fully mechanized caving face of coal mining, the mining pressure prediction model is trained by using the first 70% of the dataset. And the linear regression coefficient of the model and the predicted value of the mining pressure are obtained. Then, the last 30% of the dataset was used for the validation of the model.Results: The research results show that the constrained multiple linear regression model can achieve remarkable prediction results. According to predictions of tens of thousands of on-site mining pressure datasets, the predicted data and actual pressure data have the same change trend and maintain a low relative error.Discussion: Therefore, after real-time mining pressure monitoring, the system obtains the roof pressure of the fully mechanized mining face. According to the dataset, the proposed prediction model algorithm quickly predicts the roof pressure value of the next mining section and effectively forewarns roof breakages and other accidents.
引用
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页数:13
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