This paper expounds how to increase the tunneling footage of coal roadway from the aspects of increasing the fully mechanized footage,increasing the blasting footage and grasping the construction speed and quality of support.
从提高综掘进尺、提高炮掘进尺和抓好支护的施工速度和质量等方面论述了如何提高煤巷掘进进尺。
This paper expounds how to increase the tunneling footage of coal roadway from the aspects of increasing the fully mechanized footage,increasing the blasting footage and grasping the construction speed and quality of support.
从提高综掘进尺、提高炮掘进尺和抓好支护的施工速度和质量等方面论述了如何提高煤巷掘进进尺。
To indicate axial travel of the boring bar,the counting assembly is formed with two counting gears that mesh with two drive gears and a differential,and a special counter.
钻杆轴向进给由钻杆和丝杆相对转动产生,为实现钻杆进尺计数,设计的计数装置由2个与传动齿轮啮合的计数齿轮、一个圆锥齿轮差速器和一个专门设计的计数器组成。
Statistic model based on drill footage proved reserves and its application;
基于累计探井进尺的累计储量之间的统计模型及应用
The characters, laws and main cause of formation of footage unpayable in Fenghai Coal Mine were analysed.
分析了丰海煤矿产生无效进尺的特点、规律与主要原因,从做好开采分析总结、加强地质技术管理、实施风险控制措施提高开采技术水平、建立目标考核机制等方面提出了减少无效进尺的几个对策。