设计变更说明

1、西藏日喀则市白朗县高效节水灌溉工程设计变更北京中水新华灌排技术有限公司 年 月 日设计变更说明书由我单位设计的西藏日喀则市白朗县高效节水灌溉工程，在实施过程中根据现场实际情况及施工单位建议，通过有关部门及领导研究决定设计需要变更，故提出变更申请建议。一、变更区域项目区南侧角的514亩地块进行（该地块现状为基本农田）。二、变更原由根据设计灌溉面积指标的要求，本项目在实施过程中发现，项目企业未对项目区南侧角的514亩地块进行征地（该地块现状为基本农田），以至于该部分区域无法实施。经企业和施工方反映，监理和业主的指示，我公司针对此问题进行设计变更。经与企业和施工方沟通，将原设计的项目区南侧角的的51

2、4亩地块核减，变更增加至项目区东侧的团结干渠旁，同时对相应的工程量和投资进行变更。三、变更内容1、将原设计的项目区南侧角的的514亩地块核减，变更增加至项目区东侧的团结干渠旁。2、核减原设计1-22#、1-23#和1-24#三个轮灌组，新增1-22#、1-23#、1-24#和1-25#四个轮灌组，项目区轮灌组总数由原来的24个增加为25个。3、DN225PE主干管（1.25MPa）核减685m，DN200PE分干管（0.63MPa）核减1255m，DN125PE支管（0.4MPa）核减280m，DN140PE支管（0.4MPa）核减475m，DN16PE内镶贴片式滴灌带（0.2MPa）核减79

3、20m，压力补偿式滴头核减15840个。DN160PE分干管（0.63MPa）增加130m，DN180PE分干管（0.63MPa）增加885m，DN110PE支管（0.4MPa）增加445m。排气井增加1座，泄水井减少7座。四、管道水力计算及复核系统管道水力计算及复核采用原设计中的计算方法，本次变更设计不再叙述，具体计算成果详见下表。系统管道水力计算及复核成果表管道编号轮灌组编号干（支）管铺设长度（m）毛管数量（条）毛管长度（m）滴头数量（个）每条毛管流量（L/h）管道流量（m3/h）各轮灌组流量（m3/h）管径设计值（mm）毛管实际水头损失H毛实（m）地形高差（m）毛管进口水头h毛进（m）H

4、支实（m）支管水头损失H支（m）支管进口水头h支进（m）分干管水头损失H分干（m）分干管进口水头h分干进（m）干管水头损失H干（m）干管进口水头h干进（m）管道压力选取（Mpa）ZGG-012015256.00 22511.00 27.68 10.64 53.32 1.25 FGG-1-011-1#轮灌组215153.60 1603.00 27.84 2.84 27.68 0.63 ZG-1-012408064001280064051.20 153.60 1102.83 9.00 15.80 3.35 2.04 26.84 0.40 ZG-1-022408064001280064051.20

5、1102.83 10.00 15.80 3.35 2.04 27.84 0.40 ZG-1-032408064001280064051.20 1102.83 9.00 15.80 3.35 2.04 26.84 0.40 FGG-1-021-2#轮灌组215170.24 1603.00 13.62 3.40 14.02 0.63 ZG-1-042608668801376064055.04 170.24 1102.83 8.00 15.80 3.35 2.51 10.30 0.40 ZG-1-052709072001440064057.60 1102.83 6.00 15.80 3.35 2.8

6、2 12.62 0.40 ZG-1-062709072001440064057.60 1102.83 5.00 15.80 3.35 2.82 13.62 0.40 FGG-1-031-3#轮灌组405256.00 2009.00 26.84 4.74 22.58 0.63 ZG-1-072408064001280064051.20 256.00 1102.83 9.00 15.80 3.35 2.04 26.84 0.40 ZG-1-082408064001280064051.20 1102.83 7.00 15.80 3.35 2.04 24.84 0.40 ZG-1-0924080640

7、01280064051.20 1102.83 7.00 15.80 3.35 2.04 24.84 0.40 ZG-1-102408064001280064051.20 1102.83 7.00 15.80 3.35 2.04 24.84 0.40 ZG-1-112408064001280064051.20 1102.83 7.00 15.80 3.35 2.04 24.84 0.40 FGG-1-041-4#轮灌组360133.76 1409.00 13.84 6.98 11.83 0.63 ZG-1-122207358401168064046.72 133.76 902.83 6.00 1

8、5.80 3.35 4.04 13.84 0.40 ZG-1-13180604800960064038.40 902.83 6.00 15.80 3.35 2.35 12.15 0.40 ZG-1-14140463680736064029.44 902.83 5.00 15.80 3.35 1.15 11.95 0.40 ZG-1-1590302400480064019.20 902.83 3.00 15.80 3.35 0.35 13.15 0.40 FGG-1-051-22#轮灌组265225.92 1800.30 12.06 4.04 16.40 0.63 ZG-1-1621571568

9、01136064045.44 225.92 1102.83 5.50 15.80 3.35 1.48 11.78 0.40 ZG-1-172608668801376064055.04 1102.83 7.00 15.80 3.35 2.51 11.30 0.40 ZG-1-182909676801536064061.44 1102.83 7.50 15.80 3.35 3.39 11.69 0.40 ZG-1-1930010080001600064064.00 1102.83 7.50 15.80 3.35 3.76 12.06 0.40 FGG-1-061-23#轮灌组415206.08 1

10、800.20 13.85 5.39 19.03 0.63 ZG-1-2031010382401648064065.92 206.08 1102.83 8.00 15.80 3.35 4.10 11.90 0.40 ZG-1-2132510886401728064069.12 1102.83 7.00 15.80 3.35 4.67 13.47 0.40 ZG-1-2233511188801776064071.04 1102.83 7.00 15.80 3.35 5.05 13.85 0.40 FGG-1-071-24#轮灌组205229.76 1802.50 13.08 3.22 13.80

11、0.63 ZG-1-2335511894401888064075.52 229.76 1252.83 6.00 15.80 3.35 3.28 13.08 0.40 ZG-1-2435511894401888064075.52 1252.83 6.00 15.80 3.35 3.28 13.08 0.40 ZG-1-2537012398401968064078.72 1252.83 8.00 15.80 3.35 3.67 11.47 0.40 FGG-1-081-25#轮灌组130188.16 1601.30 11.29 2.45 12.44 0.63 ZG-1-26440146116802

12、336064093.44 188.16 1402.83 8.00 15.80 3.35 3.49 11.29 0.40 ZG-1-27445148118402368064094.72 1402.83 9.00 15.80 3.35 3.62 10.42 0.40 ZGG-022595350.72 22557.00 47.72 23.78 132.49 1.60 FGG-2-011-5#轮灌组360293.76 20011.00 31.36 5.36 47.72 0.63 ZG-2-0160201600320064012.80 293.76 1252.83 1.00 15.80 3.35 0.0

13、2 16.82 0.40 ZG-2-021906350401008064040.32 1252.83 4.00 15.80 3.35 0.58 20.38 0.40 ZG-2-0331010382401648064065.92 1252.83 5.00 15.80 3.35 2.26 23.05 0.40 ZG-2-04430143114402288064091.52 1252.83 10.00 15.80 3.35 5.56 31.36 0.40 ZG-2-05390130104002080064083.20 1252.83 9.00 15.80 3.35 4.26 29.06 0.40 F

14、GG-2-021-6#轮灌组360211.20 18011.00 18.88 4.88 34.76 0.63 ZG-2-062006652801056064042.24 211.20 902.83 0.00 15.80 3.35 3.08 18.88 0.40 ZG-2-072006652801056064042.24 902.83 1.00 15.80 3.35 3.08 17.88 0.40 ZG-2-082006652801056064042.24 902.83 3.00 15.80 3.35 3.08 15.88 0.40 ZG-2-092006652801056064042.24 9

15、02.83 3.00 15.80 3.35 3.08 15.88 0.40 ZG-2-102006652801056064042.24 902.83 4.00 15.80 3.35 3.08 14.88 0.40 FGG-2-031-7#轮灌组460350.72 22511.00 28.93 5.50 45.43 0.63 ZG-2-1135011692801856064074.24 350.72 1252.83 10.00 15.80 3.35 3.14 28.93 0.40 ZG-2-1232010684801696064067.84 1252.83 7.00 15.80 3.35 2.4

16、5 25.25 0.40 ZG-2-132909676801536064061.44 1252.83 7.00 15.80 3.35 1.87 24.66 0.40 ZG-2-142608668801376064055.04 1252.83 7.00 15.80 3.35 1.38 24.18 0.40 ZG-2-152307660801216064048.64 1252.83 6.00 15.80 3.35 0.98 22.78 0.40 ZG-2-162056854401088064043.52 1252.83 4.00 15.80 3.35 0.72 20.52 0.40 FGG-2-0

17、41-8#轮灌组460253.44 20011.00 14.88 5.29 31.17 0.63 ZG-2-172006652801056064042.24 253.44 902.83 4.00 15.80 3.35 3.08 14.88 0.40 ZG-2-182006652801056064042.24 902.83 4.00 15.80 3.35 3.08 14.88 0.40 ZG-2-192006652801056064042.24 902.83 4.00 15.80 3.35 3.08 14.88 0.40 ZG-2-202006652801056064042.24 902.83

18、4.00 15.80 3.35 3.08 14.88 0.40 ZG-2-212006652801056064042.24 902.83 4.00 15.80 3.35 3.08 14.88 0.40 ZG-2-222006652801056064042.24 902.83 4.00 15.80 3.35 3.08 14.88 0.40 FGG-2-051-9#轮灌组540206.08 1807.00 24.76 7.01 38.78 0.63 ZG-2-23185614880976064039.04 206.08 902.83 6.00 15.80 3.35 2.48 24.28 0.40

19、ZG-2-24170564480896064035.84 902.83 7.00 15.80 3.35 1.97 24.76 0.40 ZG-2-25155514080816064032.64 902.83 6.00 15.80 3.35 1.52 23.32 0.40 ZG-2-26140463680736064029.44 902.83 5.00 15.80 3.35 1.15 21.95 0.40 ZG-2-27125413280656064026.24 902.83 4.00 15.80 3.35 0.84 20.64 0.40 ZG-2-28110362880576064023.04

20、 902.83 3.00 15.80 3.35 0.59 19.39 0.40 ZG-2-2995312480496064019.84 902.83 3.00 15.80 3.35 0.39 19.19 0.40 FGG-2-061-10#轮灌组540295.68 2007.00 15.88 8.14 31.02 0.63 ZG-2-302006652801056064042.24 295.68 902.83 4.00 15.80 3.35 3.08 14.88 0.40 ZG-2-312006652801056064042.24 902.83 3.00 15.80 3.35 3.08 15.

21、88 0.40 ZG-2-322006652801056064042.24 902.83 5.00 15.80 3.35 3.08 13.88 0.40 ZG-2-332006652801056064042.24 902.83 3.00 15.80 3.35 3.08 15.88 0.40 ZG-2-342006652801056064042.24 902.83 3.00 15.80 3.35 3.08 15.88 0.40 ZG-2-352006652801056064042.24 902.83 3.00 15.80 3.35 3.08 15.88 0.40 ZG-2-36200665280

22、1056064042.24 902.83 3.00 15.80 3.35 3.08 15.88 0.40 FGG-2-071-11#轮灌组300226.56 1809.00 21.19 4.60 34.78 0.63 ZG-2-372909676801536064061.44 226.56 1102.83 2.00 15.80 3.35 3.39 21.19 0.40 ZG-2-382759172801456064058.24 1102.83 0.00 15.80 3.35 2.93 18.72 0.40 ZG-2-392608668801376064055.04 1102.83 0.00 1

23、5.80 3.35 2.51 18.30 0.40 ZG-2-402458164801296064051.84 1102.83 0.00 15.80 3.35 2.13 17.93 0.40 FGG-2-081-12#轮灌组630274.56 20016.00 16.58 8.34 40.92 0.63 ZG-2-412307660801216064048.64 274.56 1102.83 1.00 15.80 3.35 1.79 16.58 0.40 ZG-2-422207358401168064046.72 1102.83 2.00 15.80 3.35 1.59 15.39 0.40

24、ZG-2-432006652801056064042.24 1102.83 2.00 15.80 3.35 1.21 15.01 0.40 ZG-2-44180604800960064038.40 1102.83 2.00 15.80 3.35 0.92 14.72 0.40 ZG-2-45160534240848064033.92 1102.83 2.00 15.80 3.35 0.66 14.46 0.40 ZG-2-46135453600720064028.80 1102.83 0.00 15.80 3.35 0.42 16.22 0.40 ZG-2-471103628805760640

25、23.04 1102.83 0.00 15.80 3.35 0.23 16.03 0.40 ZG-2-4860201600320064012.80 1102.83 0.00 15.80 3.35 0.05 15.84 0.40 ZGG-051275364.80 22515.00 31.35 12.52 62.87 1.25 ZGG-06700259.20 20032.00 31.35 18.81 86.16 1.25 FGG-3-011-13#轮灌组270207.36 1807.00 19.43 3.54 29.97 0.63 ZG-3-012458164801296064051.84 207

26、.36 1102.83 1.00 15.80 3.35 2.13 18.93 0.40 ZG-3-022458164801296064051.84 1102.83 1.50 15.80 3.35 2.13 19.43 0.40 ZG-3-032458164801296064051.84 1102.83 1.00 15.80 3.35 2.13 18.93 0.40 ZG-3-042458164801296064051.84 1102.83 1.00 15.80 3.35 2.13 18.93 0.40 FGG-3-021-14#轮灌组270224.00 1807.00 18.10 4.06 2

27、9.16 0.63 ZG-3-0531510584001680064067.20 224.00 1102.83 2.00 15.80 3.35 4.30 18.10 0.40 ZG-3-062759172801456064058.24 1102.83 2.00 15.80 3.35 2.93 16.72 0.40 ZG-3-072458164801296064051.84 1102.83 1.00 15.80 3.35 2.13 16.93 0.40 ZG-3-082207358401168064046.72 1102.83 1.00 15.80 3.35 1.59 16.39 0.40 FG

28、G-3-031-15#轮灌组370259.20 2009.00 17.93 4.43 31.35 0.63 ZG-3-092458164801296064051.84 259.20 1102.83 1.00 15.80 3.35 2.13 16.93 0.40 ZG-3-102458164801296064051.84 1102.83 1.00 15.80 3.35 2.13 16.93 0.40 ZG-3-112458164801296064051.84 1102.83 0.00 15.80 3.35 2.13 17.93 0.40 ZG-3-122458164801296064051.84

29、 1102.83 3.00 15.80 3.35 2.13 14.93 0.40 ZG-3-132458164801296064051.84 1102.83 3.00 15.80 3.35 2.13 14.93 0.40 FGG-3-041-16#轮灌组370144.00 1409.00 18.86 8.17 36.03 0.63 ZG-3-141906350401008064040.32 144.00 902.83 1.00 15.80 3.35 2.70 17.50 0.40 ZG-3-15165554400880064035.20 902.83 1.00 15.80 3.35 1.85

30、16.65 0.40 ZG-3-16135453600720064028.80 902.83 2.00 15.80 3.35 1.06 18.86 0.40 ZG-3-17110362880576064023.04 902.83 1.00 15.80 3.35 0.59 17.39 0.40 ZG-3-1880262080416064016.64 902.83 0.00 15.80 3.35 0.24 16.04 0.40 ZGG-03950179.20 22554.00 37.65 7.67 103.32 1.60 FGG-3-051-17#轮灌组285179.20 16010.00 18.

31、89 4.93 33.82 0.63 ZG-3-192809374401488064059.52 179.20 1102.83 0.00 15.80 3.35 3.09 18.89 0.40 ZG-3-202307660801216064048.64 1102.83 3.00 15.80 3.35 1.79 14.58 0.40 ZG-3-21170564480896064035.84 1102.83 1.00 15.80 3.35 0.77 15.57 0.40 ZG-3-22165554400880064035.20 1102.83 0.00 15.80 3.35 0.73 16.53 0

32、.40 FGG-3-061-18#轮灌组540151.04 16012.00 18.73 6.93 37.65 0.63 ZG-3-231956552001040064041.60 151.04 902.83 0.00 15.80 3.35 2.93 18.73 0.40 ZG-3-241906350401008064040.32 902.83 1.00 15.80 3.35 2.70 17.50 0.40 ZG-3-25125413280656064026.24 902.83 2.00 15.80 3.35 0.84 14.64 0.40 ZG-3-2680262080416064016.6

33、4 902.83 2.00 15.80 3.35 0.24 14.04 0.40 ZG-3-2750161280256064010.24 902.83 0.00 15.80 3.35 0.06 15.86 0.40 ZG-3-284515120024006409.60 902.83 0.00 15.80 3.35 0.05 15.85 0.40 ZG-3-29301080016006406.40 902.83 0.00 15.80 3.35 0.02 15.82 0.40 ZGG-04525364.80 22518.00 19.08 22.87 63.95 1.25 FGG-4-011-19#

34、轮灌组470364.80 2258.00 20.07 6.02 18.09 0.63 ZG-4-012859576001520064060.80 364.80 1102.83 1.00 15.80 3.35 3.27 20.07 0.40 ZG-4-022859576001520064060.80 1102.83 1.00 15.80 3.35 3.27 20.07 0.40 ZG-4-032859576001520064060.80 1102.83 1.00 15.80 3.35 3.27 20.07 0.40 ZG-4-042859576001520064060.80 1102.83 0.

35、50 15.80 3.35 3.27 19.57 0.40 ZG-4-052859576001520064060.80 1102.83 0.00 15.80 3.35 3.27 19.07 0.40 ZG-4-062859576001520064060.80 1102.83 0.00 15.80 3.35 3.27 19.07 0.40 FGG-4-021-20#轮灌组470304.64 2258.00 17.58 4.39 13.97 0.63 ZG-4-0731010382401648064065.92 304.64 1102.83 1.00 15.80 3.35 4.10 18.90 0

36、.40 ZG-4-082959878401568064062.72 1102.83 1.00 15.80 3.35 3.57 18.37 0.40 ZG-4-092307660801216064048.64 1102.83 0.00 15.80 3.35 1.79 17.58 0.40 ZG-4-102207358401168064046.72 1102.83 1.00 15.80 3.35 1.59 16.39 0.40 ZG-4-112056854401088064043.52 1102.83 2.00 15.80 3.35 1.31 15.11 0.40 ZG-4-12175584640

37、928064037.12 1102.83 2.00 15.80 3.35 0.85 14.65 0.40 FGG-4-031-21#轮灌组450333.44 2256.00 20.16 4.92 19.08 0.63 ZG-4-132859576001520064060.80 333.44 1252.83 0.00 15.80 3.35 1.80 17.60 0.40 ZG-4-142859576001520064060.80 1252.83 0.00 15.80 3.35 1.80 17.60 0.40 ZG-4-152859576001520064060.80 1252.83 0.00 1

38、5.80 3.35 1.80 17.60 0.40 ZG-4-16425141112802256064090.24 1252.83 1.00 15.80 3.35 5.36 20.16 0.40 ZG-4-172859576001520064060.80 1252.83 4.00 15.80 3.35 1.80 13.60 0.40 五、变更前后工程量及投资对比项目所涉变更区域变更前后工程量及投资对比详见下表。项目所涉变更区域变更前后工程量及投资对比表编号项目名称单位变更前变更后变更增减变化数量单价（元）合价(万元)数量单价（元）合价(万元)数量单价（元）合价(万元)设备费建安费设备费建安费设备费建安费设备费建安费设备费建安费设备费建安费第一部分 建筑工程198.81 193.35 -5.46 二灌溉管网工程195.10 189.90 -5.20 （一）管道工程195.10 189.90 -5.20 1管道砂砾石开挖m80599.18 9.89 79.72 78444.17 9.89 77.58 -2155.01 0.00 -2.14 2管道砂砾石回填压实m79615.08 14.09 112.16 77486.38 14.09 109.18 -2128.70 0.00 -2.98 3C2