生产建设项目土壤流失量测算导则计算程序

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上方无来水土壤流失监测土壤流失土壤流失背景值(已知年均降雨量),,,,,,,

序号,项目,因子,单位,公式,弃渣场区,,

,,,,,输水洞出口渣场,输水洞2#渣场,坝下施工平台暂存料弃渣场

3,工程堆积体（无来水）,Mdw,t,Mdw=XRGdwLdwSdwA,0.03,0.08,0.07

3.1,型态因子,X,/,0.92(1),1.00,1.00,1.00

3.2,降雨侵蚀力因子,R,MJ.mm/（hm2.h）,Rd=0.053Pd1.655,1643.93,1643.93,1643.93

,年降雨量,Pd,mm,,499.00,499.00,499.00

3.3,堆积体土质因子,Gdw,t.hm2.h/（hm2.MJ.mm）,Gdw=α1eb1δ,0.02,0.06,0.06

,土质因子系数,α1,,0.075,0.075,0.075,0.075

,,b1,,-2.57,-2.57,-2.57,-2.57

,侵蚀面土体砾石含量,δ,,0.3,0.5,0.1,0.1

3.4,堆积体坡长因子,Ldw,/,Ldw=（λ/5）f1,1.42,1.68,1.42

,坡长,λ,m,,8,10,8

,角度,°,,,15,15,15

3.5,堆积体坡度因子,Sdw,,Sdw=（Φ/25）d1,0.54,0.54,0.54

,坡度因子系数,d1,/,1.212,1.212,1.212,1.212

3.6,水平投影面积,A,hm2,A=10-4ωλxcosθ,0.001,0.001,0.001

3.7,施工期土壤侵蚀模数,,t/（km2.a）,Mi=Mdw/A*100,2611.79,8638.82,7305.92

,,,,,,,,

上方有来水土壤流失监测土壤流失土壤流失背景值(已知年降雨量),,,,,,,

序号,项目,因子,单位,公式,弃渣场区,,

,,,,,输水洞出口渣场,输水洞2#渣场,坝下施工平台暂存料弃渣场

4,工程堆积体（无来水）,Mdy,t,Mdy=FdyGdyLdySdyA+Mdw,0.03,0.10,0.08

4.1,堆积体径流冲蚀力因子,Fdy,/,,580.79,690.63,907.69

,单宽流量,W,m3/m,Fdw=10000W0.96,0.05,0.06,0.08

,,,,,,,,

4.2,堆积体土质因子,Gdw,t.hm2.h/（hm2.MJ.mm）,Gdw=α2eb2δ,0.03,0.04,0.04

,土质因子系数,α2,,0.064,0.064,0.064,0.064

,常用对数,e,,2.72,2.72,2.72,2.72

,,b2,,,-1.71,-1.71,-1.71

,侵蚀面土体砾石含量,δ,,,0.5,0.3,0.3

4.3,堆积体坡长因子,Ldw,/,Lkw=（λ/5）-0.902,0.54,0.54,0.54

,坡长,λ,m,,10,10,10

4.4,堆积体坡度因子,Sdy,,Sdw=（Φ/25）d2,0.72,1,0.25

,坡度,°,,,20,25,10

,坡度因子系数,d2,/,1.501,1.501,1.501,1.501

4.5,水平投影面积,A,hm2,A=10-4ωλxcosθ,0.0009,0.0009,0.0010

4.6,施工期土壤侵蚀模数,,t/（km2.a）,Mi=Mdy/A*100,3289.48,10622.13,7636.25

上方无来水土壤流失监测土壤流失土壤流失背景值(已知月降雨量),,,,,,,

序号,项目,因子,单位,公式,弃渣场区,,

,,,,,输水洞出口渣场,输水洞2#渣场,坝下施工平台暂存料弃渣场

3,工程堆积体（无来水）,Mdw,t,Mdw=XRGdwLdwSdwA,0.05,0.06,0.05

3.1,型态因子,X,/,0.92(1),1.00,1.00,1.00

3.2,降雨侵蚀力因子,R,MJ.mm/（hm2.h）,Rm=0.183Pm1.995,1896.97,1896.97,1896.97

,年降雨量,Pd,mm,,103.00,103.00,103.00

3.3,堆积体土质因子,Gdw,t.hm2.h/（hm2.MJ.mm）,Gdw=α1eb1δ,0.03,0.03,0.06

,土质因子系数,α1,,0.075,0.075,0.075,0.075

,,b1,,-2.57,-2.57,-2.57,-2.57

,侵蚀面土体砾石含量,δ,,0.3,0.3,0.3,0.1

3.4,堆积体坡长因子,Ldw,/,Ldw=（λ/5）f1,1.42,1.68,1.42

,坡长,λ,m,,8,10,8

,角度,°,,,15,15,10

3.5,堆积体坡度因子,Sdw,,Sdw=（Φ/25）d1,0.54,0.54,0.33

,坡度因子系数,d1,/,1.212,1.212,1.212,1.212

3.6,水平投影面积,A,hm2,A=10-4ωλxcosθ,0.001,0.001,0.001

3.7,施工期土壤侵蚀模数,,t/（km2.a）,Mi=Mdw/A*100,5040.61,5960.23,5157.38

,,,,,,,,

上方有来水土壤流失监测土壤流失土壤流失背景值(已知月降雨量),,,,,,,

序号,项目,因子,单位,公式,弃渣场区,,

,,,,,输水洞出口渣场,输水洞2#渣场,坝下施工平台暂存料弃渣场

4,工程堆积体（无来水）,Mdy,t,Mdy=FdyGdyLdySdyA+Mdw,0.05,0.06,0.05

4.1,堆积体径流冲蚀力因子,Fdy,/,,580.79,690.63,907.69

,单宽流量,W,m3/m,Fdw=10000W0.96,0.05,0.06,0.08

,,,,,,,,

4.2,堆积体土质因子,Gdw,t.hm2.h/（hm2.MJ.mm）,Gdw=α2eb2δ,0.01,0.01,0.01

,土质因子系数,α2,,0.064,0.064,0.064,0.064

,常用对数,e,,2.72,2.72,2.72,2.72

,,b2,,,-1.71,-1.71,-1.71

,侵蚀面土体砾石含量,δ,,,,,

4.3,堆积体坡长因子,Ldw,/,Lkw=（λ/5）-0.902,0.54,0.54,0.54

,坡长,λ,m,,10,10,10

4.4,堆积体坡度因子,Sdy,,Sdw=（Φ/25）d2,0.72,1,0.25

,坡度,°,,,20,25,10

,坡度因子