《断面面积计算.docx》由会员分享，可在线阅读，更多相关《断面面积计算.docx（2页珍藏版）》请在三一文库上搜索。
f&=l/5BS=BX (h+0. 161B)=1/4BS=BX(h + ().198B)=1/3BS=BX(h + 0,263B)巷道规格巷宽B(m)巷高(m)拱高)(m)巷壁高h(m)断回回积Sg2)备注2.8 X 2.42.82.40.561.846.4C=1/5B2.4 X 2.22.42.20.481.725.1C=1/5B22X2.02.22.00.441.564.2C=1/5B2.0 X 2.02.02.00.401.603.84L=1/5B1.5X2.01.52.00.301.702.91L=1/5B1.5X1.81.51.82.7天井2.8 X 2.62.82.60.701.906.87.= 1/4B3.0 X 3.23.23.00.642.569.841,= 1/5B3.45X3.843.843.452.4*2.62.62.40.651.755.892.4*2.62.62.40.521.885.982.62.40.871.535.7631/3B3.0*3.03.03.00.752.258.53fu=l/4B3.0*2.83.02.80.752.057.93.= 1/4B