为了在提高煤炭资源采出率的同时保证巷道的稳定性,提出在陈四楼煤矿2216工作面二2煤层采用留小煤柱沿空送巷技术。本文通过平面应变模型试验和FLAC3D数值模拟计算,分析了在锚杆支护下不同宽度煤柱的破坏状态、应力分布及巷道围岩变形等因素,进而确定沿空送巷的合理煤柱宽度。研究表明,留设煤柱是沿空送巷围岩的一个重要承载结构,选择5 m煤柱作为窄煤柱护巷能够保证巷道的使用安全并具有相对较高的采出率,而帮锚采用全锚支护能够使锚杆的支护效应得到更为充分的发挥。 In order to improve the recovery rate of coal resources at the same time to ensure the stability of the roadway, put forward in the Chen Sihou coal mine 2216 face 2 2 coal seam left pillars along the roadway technology. In this paper, by plane strain model test and FLAC3D numerical simulation, the factors such as failure state, stress distribution and surrounding rock deformation of coal pillars with different widths are analyzed, and then the reasonable width of pillars along the roadway is determined. The research shows that the remaining pillars are an important bearing structure for the surrounding rock along the roadway. The selection of 5 m coal pillar as the narrow pillar protection roadway can ensure the safe use of the roadway and has a relatively high recovery rate, The use of full anchor support can make the bolt support effect more fully.