采厚与超前支承压力峰值位置关系理论分析研究

Study on the relationship between mining thickness and the peak position of advance abutment pressure by theoretical analysis

为分析综放工作面采厚对超前支承压力峰值位置的影响,以河林煤矿j7401综放工作面为研究对象,通过理论分析就综放工作面采厚与超前支承压力峰值位置的关系进行深入研究。通过理论分析得出,采厚与超前支承压力峰值位置呈现一次线性关系,超前支承压力峰值位置与工作面煤壁的距离随采厚的增加而变大。采用最小二乘拟合的方法建立了采厚与超前支承压力峰值位置的一次线性关系式,验证了理论分析的结论,得到了j7401工作面中采厚与超前支承压力峰值位置的一次线性关系式的斜率是1.311。研究结论可用于预测不同采厚时超前支承压力峰值位置。

In order to analyze the influence of mining thickness of fully mechanized caving face on the peak position of advanced abutment pressure,No.j7401 fully mechanized caving face of Helin Mine was taken as the research object.The relationship between mining thickness of fully mechanized caving face and the peak position of advanced abutment pressure was studied in depth through theoretical analysis.Through theoretical analysis,it was concluded that there was a linear relationship between the mining thickness and the peak position of the advanced abutment pressure,and the distance between the peak position of the advanced abutment pressure and the coal wall of the working face increased with the increase of the mining thickness.The linear relationship between the mining thickness and the peak position of the advanced abutment pressure was established by the least square fitting method,which verified the conclusion of the theoretical analysis.The slope of the linear relationship between the mining thickness and the peak position of the advanced abutment pressure in the j7401 working face was 1.311.The research conclusion can be used to predict the peak position of advance abutment pressure at different mining thicknesses.