【摘要】 本文对现有错距经验计算式：Ｘｍｉｎ＝Ｍ·ｃｔｇδ＋Ｌ＋ｂ提出了质疑。根据矿山压力显现规律，对相似模拟实验及有限元计算的结果进行分析，提出了确定合理错距的一些新见解。更多还原

【Abstract】 At first, the paper puts forward some doubt about the present experiencedformula of the heading distance: Xmin=M. Ctgδ+L+b. After analysed the results of theanalogue simulating test and the finite element based on the rules of the rock mechanics,some new views on the optimum heading distance are brought on in this paper.更多还原