基坑降水計算-潛水完整井-非完整井

基坑潛水降水計算,,,,,,,

說明：計算依據(jù)建筑基坑支護技術(shù)規(guī)程(JGJ120-2012)，表中藍色數(shù)字根據(jù)工程概況輸入，單位為基坑工程設(shè)計規(guī)范默認單位，直接輸入數(shù)字，單位自動添加，單井出水量見附表。,,,,,,,

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潛水非完整井,,,,,潛水完整井,,

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輸入?yún)?shù),,,,,輸入?yún)?shù),,

基坑長度(L),,,60.00m,,基坑長度(L),,60.00m

基坑寬度(B),,,50.00m,,基坑寬度(B),,50.00m

基坑開挖深度(相對地表),,,10.00m,,基坑開挖深度(相對地表),,10.00m

潛水含水層厚度(H),,,20.00m,,潛水含水層厚度(H),,20.00m

降水后坑底水位與基底距離,,,0.50m,,降水后坑底水位與基底距離,,0.50m

地下水水位埋深,,,2.00m,,地下水水位埋深,,2.00m

井點管距坑壁距離,,,0.50m,,井點管距坑壁距離,,0.50m

降水井直徑,,,0.25m,,降水井直徑,,0.25m

過濾器進水長度(l),,,1.20m,,過濾器進水長度(l),,1.20m

過濾器半徑(rs),,,0.15m,,過濾器半徑(rs),,0.15m

滲透系數(shù)(K),,,7.60m/d,,滲透系數(shù)(K),,7.60m/d

水力坡降(i),,,0.10,,水力坡降(i),,0.10

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中間量及計算結(jié)果,,,,,中間量及計算結(jié)果,,

降水后基坑內(nèi)水位高度(h),,,11.50m,,降水后基坑內(nèi)水位高度(h),,11.50m

井水位降深(sw)(計算R用),,,11.06m,,基坑地下水水位設(shè)計降深(sd),,8.50m

基坑等效半徑(r0),,,31.47m,,基坑等效半徑(r0),,31.47m

降水影響半徑(R),,,272.78m,R=2Sw(kH)1/2,降水影響半徑(R),,272.78m

管井單井出水能力(q0),,,133.4m3/d,,管井單井出水能力(q0),,133.4m3/d

基坑降水總涌水量(Q),,,1866.2m3/d,,基坑降水總涌水量(Q),,2817.7m3/d

降水井數(shù)量(n),,,15.4口,n=1.1Q/q0,降水井數(shù)量(n),,23.2口

降水井深度,,,14.26m,,降水井深度,,14.26m

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單井出水能力取值表,,,,,,,

真空井點,36m3/d～60m3/d,,,,,,

噴射井點,外管直徑(mm),噴射管,,工作水壓力(MPa),工作水流量(m3/d),設(shè)計單井出水流量(m3/d),適用含水層滲透系數(shù)(m/d)

,,"噴嘴直徑

(mm)","混合室直徑

(mm)",,,,

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,38,7,10,0.6～0.8,112.8～163.2,100.8～138.2,0.1～5.0

,68,7,10,0.6～0.8,110.4～148.8,103.2～138.2,0.1～5.0

,100,10,20,0.6～0.8,230.4,259.2～388.8,5.0～10.0

,162,19,40,0.6～0.8,720,600.0～720.0,10.0～20.0

管井單井,q0=120prslk1/3,,,133.42,m3/d,,

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滲透系數(shù)取值參考,,,,,,,

粘土,<0.010368,,<,,0.000001cm/s,,

粉質(zhì)粘土,0.010368～0.5184m/d,,0.000001cm/s,～,0.000060cm/s,,

粉土,0.5184～5.184m/d,,0.000060cm/s,～,0.000600cm/s,,

黃土,2.592～5.184m/d,,0.000300cm/s,～,0.000600cm/s,,

粉砂,5.184～10.368m/d,,0.000600cm/s,～,0.001200cm/s,,

細砂,10.368～51.84m/d,,0.001200cm/s,～,0.006000cm/s,,

中砂,518.4～207.36m/d,,0.060000cm/s,～,0.024000cm/s,,

粗砂,