附录一 井巷摩擦阻力系数α值

附录一 井巷摩擦阻力系数α值附录一附录一井巷摩擦阻力系数井巷摩擦阻力系数（Ns2/m4）值（值（=1.2kg/m3）一、水平巷道一、水平巷道1．不支护巷道×104值附表附表1-1不支护巷道的不支护巷道的×104值巷道壁的特征×1041>顺走向在煤层里开掘的巷道2>交叉走向在岩层里开掘的巷道3>巷壁与底板粗糙度相同的巷道同上,在底板阻塞情况下58.868.6~78.458.8~78.498~1472．混凝土、混凝土砖及砖石砌碹的平巷×104值附表附表1-2砌碹平巷的砌碹平巷的×104值类别×104混凝土砌碹、外抹灰浆混凝土砌碹、不抹灰浆砖砌碹、外面抹灰浆砖砌碹、不抹灰浆料石砌碹29.4~39.249~68.624.5~29.429.4~30.239.2~49注;巷道断面小者取大值3．圆木棚子支护的巷道×104值附表附表1-3圆木棚子支护的巷道圆木棚子支护的巷道×104值木柱直径d0/cm支架纵口径0/dL时的a×104值按断面校正1234567断面/㎡校正系数151617182022242688.290.1692.1294.0396.0499102.9104.9115.2118.6121.5123.5127.4133.3138.2143.1137.2141.1141.1148154.8156.8167.6174.4155.8161.7165.6169.5177.4185.2193.1199.9174.4180.3185.2190.1198.9208.7217.6225.4164.6167.6169.5171.5175.4178.4192198158.8159.7162.7164.6168.6171.5174.4180.31234568101.21.11.00.930.890.80.820.78注：表中×104值适合于支架后净断面S＝3m2的巷道，对于其它断面的巷道应乘以校正系数。4．金属支架的巷道×104值1）工字梁拱形和梯形支架巷道的×104值附表附表1-4工字梁拱形和梯形支架的巷道工字梁拱形和梯形支架的巷道×104值金属梁尺寸d0/cm支架纵口径0/dL时的×104值按断面校正23458断面/㎡校正系数1012141618107.8127.4137.2147156.8147166.6186.2205.8225.4176.420