摘要
本文采用代数射线法留设保护煤柱。通过少量的数据计算及线条连接,即可在平面图上绘出煤柱图。此法简单易行和精度高。
This paper offer the algebra ray method to preserve protective coal pillar. Through a littldata computations as well as joining lines, by the method, coal draw coal pillar graph on plan. It is simple, convenient and high precision
出处
《山东矿业学院学报》
CAS
1992年第1期27-31,共5页
Journal of Shandong University of Science and Technology(Natural Science)
关键词
煤矿
保护煤柱
留设法
protective coal pillar
rock strata movement angle
coal seam trend
