倾斜长壁工作面老顶岩层破断规律的研究

A Study on the Frafture Law of the Main Roof in the Inclined Longwall Face

本文利用弹性基础梁理论,研究了倾斜长壁工作面老顶岩梁的运动和破断规律,分别对仰斜开采和俯斜开采条件下老顶岩层断裂的位置和条件、老顶来压步距等进行了分析.研究表明,倾斜长壁开采时老顶岩梁的初次断裂过程有三种类型,并给出了相应的计算公式。同时分析了煤层倾角和顶板条件对老顶断裂和矿压显现的影响。

This paper,applying the theory of the elementary beam,studied the characteristics and mechanism of fracture of movement law on the main roof stratum in the inclined longwall face.we analyzed respectively the conditions and the positions of fracture on the main roof up inclined mining,down inclined mining and main roof weighting interval.The researches show that the main roof initial fracture process,when incline longwall being employed,has three types,and the calculation formula is given,wa also analyzed the influence of coal seam angle and roof condition on the main roof fracture and the main pressure manifestation.