一般井巷斷面掘進(jìn)及支護(hù)工程量計(jì)算公式教學(xué)文案

1、Good is good, but better carries it.精益求精，善益求善。一般井巷斷面掘進(jìn)及支護(hù)工程量計(jì)算公式-一般井巷斷面掘進(jìn)及支護(hù)工程量計(jì)算公式斷面類型支護(hù)方式凈斷面掘進(jìn)斷面每米支護(hù)體積每米粉刷面積附圖拱墻及基礎(chǔ)圓形斷面磚、石、混凝土D2/4(D+2T)2/4(D+T)T圖1梯形斷面木支架、鋼筋混凝土支架、金屬支架h3(b1+b2)/2h4(b3+b4)/2(VL2+VL4+VL5)(n+1)(L4+L5+L2)(n+1)圖2底拱磚、石、混凝土0.12B2B(0.12B+1.08a01)1.08Ba01半圓拱形斷面（h0=B/2）磚、石、混凝土d=T磚、石、混凝土dTB(

2、0.39B+h2)B(0.39B+h2)B1(0.39B1+h2)B10.39(B+2d)+h21.57(B+T)T0.79(B1d+BT)2h2T+(k1+k2)T2h2T+(k1+k2)T1.57B+2h21.57B+2h2圖3圓弧形斷面（h0=B/3）磚、石、混凝土d=T磚、石、混凝土dTB(0.24B+h2)B(0.24B+h2)B1(0.39B1-0.15B+h2)0.24B2+0.64B+0.39(T+d)(T+d)+B1h2(1.27B+1.57d)d1.27B+0.79(T+d)(T+d)/22h2T+(k1+k2)T2h2T+(k1+k2)T1.27B+2h21.27B+2h

3、2圖4三心拱形斷面（h0=B/3）磚、石、混凝土d=T磚、石、混凝土dTB(0.26B+h2)B(0.26B+h2)B1(0.26B1+0.3T+h2)B10.26(B+3d)+h2(1.33B+1.55d)d0.26(3B1d+2BT)2h2T+(k1+k2)T2h2T+(k1+k2)T1.33B+2h21.33B+2h2圖5三心拱形斷面（h0=B/4）磚、石、混凝土d=T磚、石、混凝土dTB(0.2B+h2)B(0.2B+h2)B1(0.2B1+0.4d+h2)B10.2(B+4d)+h2(1.22B+1.58d)d0.2(4B1d+2BT)2h2T+(k1+k2)T2h2T+(k1+k2

4、)T1.22B+2h21.22B+2h2圖5平頂斷面鋼梁混凝土Bh2B1(h2+T1)B1T12h2T+(k1+k2)TB+2h2圖6半圓拱形斷面（h0=B/2）噴射混凝土B(0.39B+h2)B1(0.39B1+h2)1.57(B+T)T2(h2+0.1)T1.57B+2h2圓弧形斷面（h0=B/3）噴射混凝土B(0.24B+h2)B1(0.39B1-0.15B+h2)(1.27B+1.57d)d2(h2+0.1)T1.27B+2h2三心拱形斷面（h0=B/3）噴射混凝土B(0.26B+h2)B1(0.26B1+0.3d+h2)(1.33B+1.55d)d2(h2+0.1)T1.33B+2h2三心拱形斷面（h0=B/4）噴射混凝土B(0.2B+h2)B1(0.2B1+0.4d+h2)(1.22B+1.58d)d2(h2+0.1)T1.22B+2h2式中符號(hào)：h0凈斷面高d拱頂支護(hù)厚度T墻壁支護(hù)厚度B巷道凈寬B1巷道掘進(jìn)寬度h1自巷道道渣面算起的巷道墻高h(yuǎn)2自巷道道渣面算起的巷道墻高k1位于水溝則基礎(chǔ)深度k1無(wú)水溝則基礎(chǔ)深度a01底拱厚度b1巷道凈上寬b2巷道凈下寬b3巷道掘進(jìn)上寬b4巷道掘進(jìn)下寬h1巷道凈高h(yuǎn)2巷道掘進(jìn)高度L1兩框架間立柱長(zhǎng)度L2支架橫梁長(zhǎng)度L3支架腿柱長(zhǎng)度L4L5分別代表兩腿（或相等）長(zhǎng)度