【摘要】 分析了巷道顶板离层的机理,指出了传统测量离层方法的弊端,论述了采矿振动法测量离层的原理,提出了采矿振动法测量离层的方法。实践表明,采矿振动法比其它测量离层的传统方法更快速、准确。更多还原

【Abstract】 In this thesis,the authors analyze the mechanism of roadway roof absciss layer,point out the demerits of traditional methods of measuring roadway roof absciss layer, treatise the principles and put forward some methods of measuring absciss layer by minging vibration method. Practice proves that,the mining vibration method is fast and precise contrast with traditiona 1 methods of measuring absciss layer..更多还原