(完整word版)土钉墙基坑支护施工工艺技术

1、videoconference , Secretary of theprovincial Committee of XiaBaol ong stressed: this year is the "five water treatment" "357" timetables "for three years to resolveoutstanding i ssues, obviously worked," victoryof the year.The County'sdepartments at all levels must

2、firmly establish the "guanghui is gold and silver" green devel opment conce pt, convince d that Castle is not relaxed, always maintaining strategic ability and strong determination to improve the environment,consistently playing w ell "five water treatment of" winning the war, ev

3、er-higher levels of comprehensive well-of society wasbuilt. (A) lay the sewageuphill battle. This year we will "river water quality improved at the county level, up to five" this basic objective grasp of pollution control that focus, with the focus on three things: a good job, "clear

4、rivers" reaching the County created. Organization "look back" special i nspecti on, the County garbage River, black and odorous River is "Dragnet" investigation, timelyrectification of problems found in place firmly to prevent river pollution re bound. In a ccorda ncewith th

5、e "one -stop strategy", improving the inferior five water quality monitoring stations work this year to ensure the Eliminationof 1 provi ncial control, five water qualitysecti on 3 municipalitiescontrolled deterioration, ensure the creation this yearof "clear rivers" standards. S

6、econd,pay special attention topoll ution-cuttingconstruction of nanotubes. Interceptingnanotubes are thebasis of pollution of water source engine ering, e ngineering, matter of successor failure of water management. Urban sewage treatment, to improve "effluent from sewage treatment rate, runnin

7、g accuracy, compliance" requirement,speed up the town's supportnetwork construction, is focusingonnanotubes home "last meters" question. Domesticsewage treatment in rural areas, t his year is the final year of the three-year action, determination to fight and the momentum around,

8、ending the battle on which fully toensur e the realizati onof all County 648 formed village coverage. Also, be sure to attach importance t o focus on rural domestic wastewater treatment facility operation and management, ensure t hat wastewater treatment facility up and running, roleplay, avoid the

9、"Sun" problem. Third, pay speal attention to the River Lake pond desilting operation. Provinces now have focusedon polluti on control of water go to "digup mud", as the deepening waterof this year's "plays".Next, to jump-start an investigation line touches work, imp

10、lementationplan accordi ng to thepriorities and t he programme of work, in accordance with the "one river one policy" requiresdetailed clea ning,dredging plan, pla nning ahead of time cleaning out mud "way out", according to local conditions todo sludge,promote scientific resourc

11、eutilization of silt and mud. (B) theheavy regulation of heavilypoll uting industries. Pollution of water must grab the source, wastewater isprimarily the source of ba ckwardproduction capacity, increase the intensity of土钉墙基坑支护施工工艺技术张生洪1 前言：土钉墙技术在我国应用始于80 年代初，由于它具有材料用量少，施工速度快，安全可靠，经济等优点，目前该项技术在多高层建筑

12、的基坑开挖中得到广泛应用。通过实践总结，形成本工法。2 工法特点：2.1 施工周期短，土钉墙支护与边坡或基坑挖土同时进行。2.2 分层分块施工， 充分发挥土体的空间支护作用，并在开挖后几个小时内封闭，边坡位移和变形及时得到约束限制。3 适用范围：本工艺标准适用于工业和民用建筑物、构筑物基坑边坡采用土钉墙支护的施工。4 工艺原理：以土钉为主要受力构件，由密集的土钉群、被加固的原位土体、喷射混凝土面层、和必要的防水系统组成支护体系。5 施工工艺流程及操作要点5.1 施工工艺流程设置排水系统开挖修坡喷第一层混凝土成孔安土钉、注浆、安连接件编制钢筋网喷混凝土面层5.2 操作要点reatment of

13、heavily polluting industries. According to municipal, and municipal governmentdeployment of seve n bigheavy pollution industry regulation "three years actionplans", requirements to December 2016 endof Qian, all included shut stopped eliminated of enterprise all shut stoppedeli minated in p

14、lace ; June 30, 2017 Qian, all includedplace regulation upgrade a nd agglomeration restruct uring of enterpriseby unified standard regulation in place, latenot standardof enterprise are implementation discontinue d; June 30, 2018Qian, all intends Parkproductionof enterprise relocation Park i n pla c

15、e, late not Park of are discontinued. In the processof renovation, will focus on four aspects: to firmly close the high energy consumption and heavy pollution, hopeless enterprise gover nance a nd producti on li nes, eliminated a numberof yearly emission intensity, low value-added products of backwa

16、r d production capacity. Second, we must strictly enforce the space , total project "Trinity"environment access system, promoting industry acce ss and environmentalconditions of access of enterprises to the Park, industrialpark, inprinciple,no l onger the class on the new project. Thirdl y

17、, promoting replacement and reconstructi on of heavily polluting i ndustries, mergers and reorganizations, g uide enterprises to e nergy conservation, recycling and low-car bon and clean production, and improve the level of green devel opme nt.Four to establish a long-term supervision mechanism, inc

18、rea se the i ntensityof special inspe ctions, investigate andpunish t he rectificati on is not in place, normal business of runni ng anti-polluti on i nstallations do not. (Iii) linkage to promote flood control water, drainage, water supply, improving water saving. Speed up crossang support river di

19、ke reinforcement, and along Pu seawall except insurance reinforceme nt, and LakeQian sluice, and BA Cao sluice , andcloudcover reservoir, focus flood control drainage engineering constr ucti on, vigorouslyimplementation "strong library" "solid di" "spread row" engineeri

20、ng, i ncreased geological disaster hidden points governance efforts, solid advance small basin torrent disa ster governance , efforts from essentiallysolutionbasin sex, and regional flood control drainagecapacity insufficient of problm. V igorously implement the piers, algae and other water sources

21、prote ction and, promoting ruraldrinki ng water safety projects, setting up water pricing reform and environmental protection mechanism, gui ding water depth. Further soilpollution and re pair, strengthen agricultural non-point source pollution prevention, mountain, water, forests, fields, lakes, va

22、rious elements mutual long. Four, manage to tightencontr ol, to play "three to split" battle. XiaBaolong , Secretary of provincial party Committee stressed that whil e the "three tosplit" operation time is over three years, but "threeo split" must continue tocatch on, a

23、nd re solve a split cannot be changed.All localities anddepartments tothe village and "nouna uthorised" createdvideoconference , Secretary of theprovincial Committee of XiaBaol ong stressed: this year is the "five water treatment" "357"timetables "for three years t

24、o resolveoutstanding i ssues, obviously worked," victoryof the year.The County'sdepartments at all levels must firmly establish the "guanghui is gold and silver" green devel opment conce pt, convince d that Castle is not relaxed, always maintaining strategic ability and strong det

25、ermination to improve the environment,consistently playing w ell "five water treatment of" winning the war, ever-higher levels of comprehensive well-of society wasbuilt. (A) lay the sewageuphill battle. This year we will "river water quality improved at the county level, up t o five&q

26、uot; this basic objective grasp of pollution control that focus, with the focus on three things: a good job, "clear rivers" reaching the County created. Organization "look back" special i nspecton, the County garbage River, black and odorous River is "Dragnet" investiga

27、tion, timelyrectification of problems found in place firmly to prevent river pollution re bound. In a ccorda ncewith the "one -stop strategy", improving the inferior five water quality monitoring stations work this year to ensure the Eliminationof 1 provi ncial control, five water qualitys

28、ecti on 3 municipalitiescontrolled deterioration, ensure the creation this yearof "clear rivers" standards. Second,pay special attention topoll ution-cuttingconstruction of nanotubes. Interceptingnanotubes are thebasis of pollution of water source engine ering, e ngineering, matter of succ

29、essor failure of water management. Urban sewage treatment, to improve "effluent from sewage treatment rate,running accuracy, compliance" requirement,speed up the town's supportnetwork construction, is focusingonnanotubes home "last meters" question. Domesticsewage treatment i

30、n rural areas, t his year is the final year of the three-year action, determination to fight and the momentum around, ending the battle on which fully toensur e the realizati onof all County 648 formed village coverage. Also, be sure to attach importance t o focus on rural domestic wastewater treatm

31、ent facility operation and management, ensure t hat wastewater treatment facility up and running, roleplay, avoid the "Sun" problem. Third, pay speal attention to the River Lake pond desilting operation. Provinces now have focusedon polluti on control of water go to "digup mud",

32、as the deepening waterof this year's "plays".Next, to jump-start an investigation line touches work, implementationplan accordi ng to thepriorities and t he programme of work, in accor dance with the "one river one policy" requiresdetailed clea ning,dredging plan, pla nning a

33、hea d of time cleaning out mud "way out", according to local conditions todo sludge,promote scientific resourceutilization of silt and mud. (B) theheavy regulation of heavilypoll uting industries. Pollution of water must grab the source, wastewater isprimarily the source of ba ckwardproduc

34、tion capacity, increase the intensity of设置排水系统1. 土钉支护宜在排除地下水的条件下进行施工，应采取恰当的排水措施，包括地表排水、支护内部排水、基坑排水等，以避免土体处于饱和状态并减轻作用于面层上的静水压力。2. 基坑四周支护范围内的地表应加修整，构筑排水沟和水泥砂浆或混凝土地面，防止地表降水向地下渗透。靠近基坑坡顶宽24m 的地面应适当垫高，并且里高外低，便于水流远离边坡。3. 在支护面层背部应插入长度为 400600mm、直径不小于 40mm的水平排水管，其外端伸出支护面层，间距可为1.52m，以便将喷混凝土面层后的积水排出。4. 为了排除积聚在

35、基坑内的渗水和雨水，应在坑底设置排水沟及集水坑。排水沟应离开边壁 0.51m，排水沟及集水坑宜用砖砌并用砂浆抹面以防止渗漏，坑中积水应及时抽出。开挖修坡1. 土钉支护应按设计规定的分层开挖深度按作业顺序施工，上层土钉注浆体及喷射混凝土面层达到设计强度的 70%后方可开挖下层土方。2. 当用机械进行土方作业时，严禁边壁出现超挖或造成边壁土体松动。基坑的边壁应留 100-150mm 用人工进行清坡，以保证边坡平整并符合设计规定的坡度。3. 支护分层开挖深度和施工的作业顺序应保证修整后的裸露边坡能在规定的时间内保持自立并在限定的时间内完成支护，即及时设置reatment of heavily pol

36、luting industries. According to municipal, and municipal governmentdeployment of seven bigheavy pollution industry regulation "three years actionplans", requirements to December 2016 endof Qian, all included shut stopped eliminated of enterprise all shut stoppedeli minated in place ; June

37、30, 2017 Qian, all includedplace regulation upgrade a nd agglomeration restruct uring of enterpriseby unified standard regulation in place, latenot standardof enterprise are implementation discontinue d; June 30, 2018Qian, all intends Parkproductionof enterprise relocati on Park in pla ce, late not

38、Park of are discontinued. In the processof renovation, will focus on four aspects: to firmly close the high energy consumption and heavy pollution, hopeless enterprise gover nance a nd production li nes, eliminated a numberof yearlyemission intensity, low value-added products of backwar d production

39、 capacity. Second, we must strictly enforce the space , total project "Trinity"environment access system, promoting industry acce ss and environmentalconditions of access of enterprises to the Park, industrialpark, inprinciple,no l onger the class on the new project. Thirdl y, promoting re

40、placement and reconstructi on of heavily polluting i ndustries, mergers and reorganizations, g uide enterprises to e nergy conservation, recycling and low-car bon and clean production, and improve the level of green devel opme nt.Four to establish a long-term supervision mechanism, increa se the i n

41、tensityof special inspe ctions, investigate andpunish t he rectificati on is not in place, normal business of runni ng anti-polluti on i nstallations do not. (Iii) linkage to promote flood control water, drainage, water supply, improving water saving. Speed up crossang support river dike reinforceme

42、nt, and along Pu seawall except insurance reinforceme nt, and LakeQian sluice, and BA Cao sluice, and cloudcover reservoir, focus flood control drainage engineering constr ucti on, vigorouslyimplementation "strong library" "solid di" "spread row" engineering, i ncreased

43、 geological disaster hidden points governance efforts, solid advance small basin torrent disa ster governance , efforts from essentiallysolutionbasin sex, and regional flood controldrainagecapacity insufficient of problm. V igorously implement the piers, algae and other water sources prote ction and

44、, promoting ruraldrinki ng water safety projects, setting up water pricing reform and environmental protection mechanism, gui ding water depth. Further soilpollution and re pair, strengthen agricultural non-point source pollution prevention, mountain, water, forests, fields, lakes, various elements

45、mutual long. Four, manage to tighten control, to play "three to split" battle. XiaBaolong , Secretary of provincial party Committee stressed that whil e the "three tosplit" operation time is over three years, but "threeto split" must continue tocatch on, and re solve a

46、split cannot be changed.All localities anddepartments tothe village and "nouna uthorised" createdvideoconference , Secretary of theprovincial Committee of XiaBaol ong stressed: this year is the "five water treatment" "357"timetables "for three years to resolveoutst

47、anding i ssues, obviously worked," victoryof the year.The County'sdepartments at all levels must firmly establish the "guanghui is gold and silver" green devel opment conce pt, convince d that Castle is not relaxed, always maintaining strategic ability and strong determination to

48、improve the environment,consistently playing w ell "five water treatment of" winning the war, ever-higher levels of comprehensive well-of society wasbuilt. (A) lay the sewageuphill battle. This year we will "river water quality improved at the county level, up to five" this basic

49、 objective grasp of pollution control that focus, with the focus on three things: a good job, "clear rivers" reaching the County created. Organization "look back" special i nspecti on, the Countygarbage River, black and odorous River is "Dragnet" investigation, timelyre

50、ctification of problems found in place firmly to prevent river pollution re bound. In a ccorda ncewith the "one -stop strategy", improving the inferior five water quality monitoring stations w ork this year to ensure the Eliminationof 1 provi ncial control, five water qualitysecti on 3 mun

51、icipalitiescontrolled deterioration, ensure the creation this yearof "clear rivers" standards. Second,pay special attention topoll ution-cuttingconstruction of nanotubes. Interceptingnanotubes are thebasis of pollution of water source engine ering, engineering, matter of success or failure

52、 of water management. Urban sewage treatment, to improve "effluent from sewage treatment rate, running accuracy, compliance" requirement,speed up the town's supportnetwork construction, is focusingonnanotubes home "last meters" question. Domesticsewage treatment in rural area

53、s, t his year is the final year of the three-year action, determination to fight and the momentum around, ending the battle on which fully toensur e the realizati onof all County 648 formed village coverage. Also, be sure to attach importance t o focus on rural domestic wastewater treatment facility

54、 operation and management, ensure t hat wastewater treatment facility up and running, roleplay, avoid the "Sun" problem. Third, pay speal attention to the River Lake pond desilting operation. Provinces now have focusedon polluti on control of water go to "digup mud", as the deepe

55、ning waterof this year's "plays".Next, to jump-start an investigation line touches work, implementationplan accordi ng to thepriorities and t he programme of work, in accor dance with the "one river one policy" requiresdetailed clea ning,dredging plan, pla nning ahead of time clea