附錄一 井巷摩擦阻力係數α值

附錄一 井巷摩擦阻力係數α值附錄一附錄一井巷摩擦阻力係數井巷摩擦阻力係數（Ns2/m4）值（值（=1.2kg/m3）一、水平巷道一、水平巷道1．不支護巷道×104值附表附表1-1不支護巷道的不支護巷道的×104值巷道壁的特征×1041>順走向在煤層裏開掘的巷道2>交叉走向在岩層裏開掘的巷道3>巷壁與底板粗糙度相同的巷道同上,在底板阻塞情況下58.868.6~78.458.8~78.498~1472．混凝土、混凝土磚及磚石砌镟的平巷×104值附表附表1-2砌镟平巷的砌镟平巷的×104值類別×104混凝土砌镟、外抹灰漿混凝土砌镟、不抹灰漿磚砌镟、外麵抹灰漿磚砌镟、不抹灰漿料石砌镟29.4~39.249~68.624.5~29.429.4~30.239.2~49注;巷道斷麵小者取大值3．圓木棚子支護的巷道×104值附表附表1-3圓木棚子支護的巷道圓木棚子支護的巷道×104值木柱直徑d0/cm支架縱口徑0/dL時的a×104值按斷麵校正1234567斷麵/㎡校正係數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值適合於支架後淨斷麵S＝3m2的巷道，對於其它斷麵的巷道應乘以校正係數。4．金屬支架的巷道×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值金屬梁尺寸d0/cm支架縱口徑0/dL時的×104值按斷麵校正23458斷麵/㎡校正係數1012141618107.8127.4137.2147156.8147166.6186.2205.8225.4176.420