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中文摘要：
以某矿沿底留顶煤回采巷道为研究对象,采用理论分析和FLAC2D数值模拟为主要方法,分析了矩形、直墙半圆形和圆形3种断面形状对巷道围岩塑性区发育特征、应力分布特征和围岩变形特征的影响。直墙半圆拱形断面与圆形断面比较而言,围岩塑性区发育范围、应力分布特征和变形特征降低程度减小;针对沿底留顶煤回采巷道而言,直墙半圆拱形断面是较优断面形式。
英文摘要：
Mining roadway along the coal seam bottom and with remaining roof coal was selected as study object. Theoretical analysis and FLAC2D numerical simulation were adopted as research method for studying the roadway＇s stability characteristic that rock plastic region and stress distribution and rock deformation characteristic in situation of rectangle and straight wall semicircle arch and circle. Compering straight wall semicircle arch with circle,the reducing degree of rock plastic region and stress distribution and deformation characteristic decrease. So the straight wall semicircle arch is the better shape for mining roadway along the coal seam bottom and with remaining roof coal.
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