GB50268-2008给水排水管道工程施工及验收规范和条文说明2011

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In order to ensure normal teaching order, protecting students ' healthy growth, ensuring that national (property) is not lost, to prevent or minimize the occurrence of safety accidents, follow the \scue each other, ensure safety and reduce losses\nciple, according to the local conditions, make the management system. 1, the principal is the responsibility of school safety, school security under the leadership of President security work leading group. The head teacher to the leadership team is responsible for, implementation of the accountability system. 2, school monthly student knowledge about safety education, education should be diversified in the form every safety education for students of classes per week should be targeted. To carry on emergency issues dealing with education in General, self-help and mutual rescue knowledge. Emergency calls (such as 110, 119, 122, 120, and so on) use common sense in education. 3, the establishment of major accident reporting system. School students report major accident within an hour of education; student run and disappearances to report; report of the accident to a written report in triplicate, a correctional centre, a police station, a township people's Government shall not conceal the accident. 4 week, teachers are on duty system, establish and improve the leadership values; strengthen the education, management of teaching activities in schools to ensure normal teaching order; responsible for school safety leadership always maintained close contact and district police stations, canvassing support from the police station on school safety and help. 5, strengthening teachers ' moral education, establish a dedicated love, improving education quality, observe the students ' psychological changes at any time and take preventive measures, no corporal punishment and covert corporal punishment on students, student out of the classroom, schools may not be. 6, units or departments use student Street propaganda or participate in the celebrations, as well as participating in other social work, without approval of the Correctional Centre, school principals consent, without organization. Without the approval of relevant departments, may organize students to participate in fire fighting, disaster relief and so on. 7, schools should educate students to obey the school rules and regulations, on time, on time home to prevent accidents. 8, school to school inspections on a regular basis, found hidden in time, and in severe cases, it is hard to eliminate immediately closed, and reported to the local people's Government, education, and rule of law section. 9, the school should always check the internal walls, retaining walls, ponds, railings, handrails, doors, Windows, staircases and a variety of sports, extracurricular activities, facilities such as fire safety, infrastructure security, unsafe facility to immediately repair and demolition to ensure that teachers and students work, learn, live venues and facilities are safe and reliable. Song Lin Xiang Liu Jia ping elementary school March 2016 song Lin Xiang Liu Jia ping primary school fire safety systems to enhance fire safety, protection of public property and the life and property safety of teachers and students, school fire safety into day-to-day management, is developing the following fire safety system. 1, strengthen fire safety education of the whole school. According to the requirements of the Fire Services Act, so that everyone has of keeping fire control safety, protecting fire control facilities, fire prevention, reports of fire给水排水管道工程施工及验收规范 GB50268-2008 围内胸腔部分管侧管顶以上250mm 快速路及主干路 ≤800 由路沟槽槽底在路 3 基范的深～围内度范 1500 围 (mm) ＞1500 支路 87 支路快速路及主干路次干路 87 87 87 次干路 90 算起＞800 快速路及主干路 93 支路 90 次干路 87 整平 90 组3现行点) 国家标准《土工试87±2(轻型) 95 93 98 95 验方92 法标95 92 90 90 90 90 准》GB/T 50123中其他方法注：表中重型击实标准的压实度和轻型击实标准的压实度，分别以相应的标准击实试验法求得的最大干密度为100％。

表4.6.3-2 柔性管道沟槽回填土压实度

压实度槽内部位 (％) 管底基础管道管道有效支撑角范基础围 ≥95 中、粗砂每层每100m 每侧检查或采用现行国≥90 回填材料范围点数 — — 用环刀法检查数量检查方法 lectricity lines, equipment inspections, found hidden in time for rectification, maintenance, and security. 9, do not use an open flame in the classroom, prohibit burning stove, lit candles, mosquito repellent, no smoking, and banning messy wiring. Without using any household appliances is not allowed. 10, live on campus faculty members, must lead by example, and educate families and children ready to fire. 11, household use of gas in schools, to master proper usage, pay attention to the leak-proof, explosion-proof, fireproof, closing valve after use to ensure security. 12, dining room must be qualified, and annual testing of pressure vessels, to regularly check, the canteen workers must be certified, strictly by operation operation, gas tank and stove safety distance of 1.5 meters, to prevent accidents. 13, the adverse consequences caused by ignoring fire safety regulations, will be punished, until investigated for legal responsibility. Song Lin Xiang Liu Jia ping elementary school March 2016 Xiang Liu Jia ping elementary school, pine slopes surrounding safety management system 1

teachers and students, the surrounding area of the school governance covers personal and food hygiene, cultural events and other aspects, integrated governance shall obtain wide support and full cooperation of the community. On the surrounding environment in schools should be closely monitored. 2, school work at the same time, should pay attention to the safety management of school environment, should take the initiative to contact the district police station, the village Committee, Correctional Centre, Township government, business management and other departments to do a good job management. 3, teacher on duty with the exception of inspections in schools, should also pay attention to environmental inspections near the campus, found that the jobless migrants from rural areas, for example, harassment of students and a variety of accidents, according to different situations reported school officials or the police station in a timely manner, to protect the safety of students. 4, every day before school, teachers remind students, pay attention to traffic safety. 5, should educate students to respect social ethics, and various regulations, maintaining public order, and fight the bad guys, and grasp the correct ways and means of maintaining and improving students ' self-care ability. 6, the establishment of emergency rescue teams of teachers in schools, on high alert and deployed. Song Lin Xiang Liu Jia ping elementary school March 2016 song Lin Xiang Liu Jia ping primary school teachers and students organizations out of safety management system organization activities between teachers and students, to draw up a precise plan and security measures must be signed by the school officials to review the programme of activities agreed upon Correctional Center agreed to implement. Organization to the field relatively far or activities require approval by the Deputy Director of the Education Bureau in charge of security. 2, each activity should have a specific responsibility, pay attention to the persons age, physical match. Route 3, activities, location, field surveys should be carried out in advance. 4, activities for the means of transport should explain the situation to the school to comply with vehicle, safety requirements, before the line for repairs. 5, each activity must have security, emergency response plan for accidents. 6, picnics, hiking, picnic to pay attention to fire prevention, food poisoning, prevention of fall accidents 7, the activities near the rivers, reservoirs, no measures or do not meet the security requirements of the Organization and not let students into the water31

In order to ensure normal teaching order, protecting students ' healthy growth, ensuring that national (property) is not lost, to prevent or minimize the occurrence of safety accidents, follow the \ch other, ensure safety and reduce losses\principle, according to the local conditions, make the management system. 1, the principal is the responsibility of school safety, school security under the leadership of President security work leading group. The head teacher to the leadership team is responsible for, implementation of the accountability system. 2, school monthly student knowledge about safety education, education should be diversified in the form every safety education for students of classes per week should be targeted. o carry on emergency issues dealing with education in General, self-help and mutual rescue knowledge. Emergency calls (such a110, 119, 122, 120, and so on) use common sense in educaton. 3, the establishment of major accident reporting system. School students report major accident within an hour of education; student run and disappearances to report; report of the accident to a written report in triplicate, a correctional centre, a police station, a township people's Government shall not conceal the accident. 4 week, teachers are on duty system, establish and improve the leadership values; strengthen the education, management of teaching activities in schools to ensure normal teaching order; responsible for school safety leadership always maintained close contact and district police stations, canvassing support from the police station on school safety and help. 5, strengthening teachers ' moral education, establish a dedicated love, improving education quality, observe the students ' psychological changes at any time and take preventive measures, no corporal punishment and covert corporal punishment on students, student out of the classroom, schools may not be. 6, units or departments use student Street propaganda or participate in the celebrations, as well as participating in other social work, without approval of the Correctional Centre, school principals consent, without organization. Without theapproval of relevant departments, may organize students to participate in fire fighting, disaster relief and so on. 7, schools should educate students to obey the school rules and regulations, on time, on time home to prevent accidents. 8, school to school inspections on a regular basis, found hidden in time, and in severe cases, it is hard to eliminate immediately closed, and reported to the local people's Government, education, and rule of law section. 9, the school should always check the internal walls, retaining walls, ponds, railings, handrails, doors, Windows, staircases and a variety of sports, extracurricular activities, facilities such as fire safety, infrastructure security, unsafe facility to immediately repair and demolition to ensure that teachers and students work, learn, live venues and facilities are safe and reliable. Song Lin Xiang Liu Jia ping elementary school March 2016 song Lin Xiang Liu Jia pingprimary school fire safety systems to enhance fire safety, protection of public property and the life and property safety of teachers and students, school fire safety into day-to-daymanagement, is developing the following fire safety system. 1, strengthen fire safety education of the whole school. According to the requirements of the Fire Services Act, so that everyone has of keeping fire control safety, protecting fire control facilities, fire prevention, reports of fire 管道两侧管顶以上管道上部 500mm 管道两侧 ≥95 中、粗砂、碎石屑，一组家标准《土(每组工试验方≥90 最大粒径小于40mm的两井之砂砾或符合要求的原85±2 土间或每3点) 法标准》GB/T 501231000m2 中其他方管顶500～1000mm ≥90 原土回填法注：回填土的压实度，除设计要求用重型击实标准外，其他皆以轻型击实标准试验获得最大干密度为100％。

地面

原土分层回填 ≥90％管顶500～1000mm ≥90％管顶以上500mm，且不小于一倍管径管道两侧 2α+30°范围管底基础，一般大于或等于150mm 符合要求的原土或中、粗砂、碎石屑，最大粒径＜40mm的砂砾回填 ≥90％ ≥85±2％

分层回填密实，压实后每层厚度100～200mm 中、粗砂回填中、租砂回填 ≥95％ ≥95％ Di 2α+30° ≥90％ ≥95％ ≥95％槽底，原状土或经处理回填密实的地基

图4.6.3 柔性管道沟槽回填部位与压实度示意图

管道沟槽回填部位与压实度见图4.6.3。

一般项目

5 回填应达到设计高程，表面应平整；检查方法：观察，有疑问处用水准仪测量。 6 回填时管道及附属构筑物无损伤、沉降、位移；检查方法：观察，有疑问处用水准仪测量。 5 开槽施工管道主体结构

lectricity lines, equipment inspections, found hidden in time for rectification, maintenance, and security. 9, do not use an open flame in the classroom, prohibit burning stove, lit candles, mosquito repellent, no smoking, and banning messy wiring. Without using any household appliances is not allowed. 10, live on campus faculty members, must lead by example, and educate families and children ready to fire. 11, household use of gas in schools, to master proper usage, pay attention to the leak-proof, explosion-proof, fireproof, closing valve after use to ensure security. 12, dining room must be qualified, and annual testing of pressure vessels, to regularly check, the canteen workers must be certified, strictly by operation operation, gas tank and stove safety distance of 1.5 meters, to prevent accidents. 13, the adverse consequences caused by ignoring fire safety regulations, will be punished, until investigated for legal responsibility. Song Lin Xiang Liu Jia ping elementary school March 2016 Xiang Liu Jia ping elementary school, pine slopes surrounding safety management system 1

5.1 一般规定

5.1.1 本章适用于预制成品管开槽施工的给排水管道工程。管渠施工应按现行国家标准《给水排水构筑物工程施工及验收规范》GB 50141的相关规定执行。

5.1.2 管道各部位结构和构造形式、所用管节、管件及主要工程材料等应符合设计要求。

5.1.3 管节和管件装卸时应轻装轻放，运输时应垫稳、绑牢，不得相互撞击，接口及钢管的内外防腐层应采取保护措施。

金属管、化学建材管及管件吊装时，应采用柔韧的绳索、兜身吊带或专用工具；采用钢丝绳或铁链时不得直接接触管节。

5.1.4 管节堆放宜选用平整、坚实的场地；堆放时必须垫稳，防止滚动，堆放层高可按照产品技术标准或生产厂家的要求；如无其他规定时应符合表5.1.4的规定，使用管节时必须自上而下依次搬运。

表5.1.4 管节堆放层数与层高

管径D0(mm) 管材种类 100～ 200～ 300～ 400～ 500～ 600～ 800～ ≥1400 150 自应力混凝土管预应力混凝土管钢管、球墨铸铁管预应力钢筒混凝土管 — — — 250 400 500 600 — 700 1200 — — — 1层 7层 5层 4层 3层 — — — 4层 3层 2层层高≤3m — — 3层 2层 1层或立放 — — 硬聚氯乙烯管、聚乙烯管 8层 5层 4层 4层 3层 3层 lectricity lines, equipment inspections, found hidden in time for rectification, maintenance, and security. 9, do not use an open flame in the classroom, prohibit burning stove, lit candles, mosquito repellent, no smoking, and banning messy wiring. Without using any household appliances is not allowed. 10, live on campus faculty members, must lead by example, and educate families and children ready to fire. 11, household use of gas in schools, to master proper usage, pay attention to the leak-proof, explosion-proof, fireproof, closing valve after use to ensure security. 12, dining room must be qualified, and annual testing of pressure vessels, to regularly check, the canteen workers must be certified, strictly by operation operation, gas tank and stove safety distance of 1.5 meters, to prevent accidents. 13, the adverse consequences caused by ignoring fire safety regulations, will be punished, until investigated for legal responsibility. Song Lin Xiang Liu Jia ping elementary school March 2016 Xiang Liu Jia ping elementary school, pine slopes surrounding safety management system 1

In order to ensure normal teaching order, protecting students ' healthy growth, ensuring that national (property) is not lost, to prevent or minimize the occurrence of safety accidents, follow the \ch other, ensure safety and reduce losses\principle, according to the local conditions, make the management system. 1, the principal is the responsibility of school safety, school security under the leadership of President security work leading group. The head teacher to the leadership team is responsible for, implementation of the accountability system. 2, school monthly student knowledge about safety education, education should be diversified in the form every safety education for students of classes per week should be targeted. o carry on emergency issues dealing with education in General, self-help and mutual rescue knowledge. Emergency calls (such a110, 119, 122, 120, and so on) use common sense in educaton. 3, the establishment of major accident reporting system. School students report major accident within an hour of education; student run and disappearances to report; report of the accident to a written report in triplicate, a correctional centre, a police station, a township people's Government shall not conceal the accident. 4 week, teachers are on duty system, establish and improve the leadership values; strengthen the education, management of teaching activities in schools to ensure normal teaching order; responsible for school safety leadership always maintained close contact and district police stations, canvassing support from the police station on school safety and help. 5, strengthening teachers ' moral education, establish a dedicated love, improving education quality, observe the students ' psychological changes at any time and take preventive measures, no corporal punishment and covert corporal punishment on students, student out of the classroom, schools may not be. 6, units or departments use student Street propaganda or participate in the celebrations, as well as participating in other social work, without approval of the Correctional Centre, school principals consent, without organization. Without theapproval of relevant departments, may organize students to participate in fire fighting, disaster relief and so on. 7, schools should educate students to obey the school rules and regulations, on time, on time home to prevent accidents. 8, school to school inspections on a regular basis, found hidden in time, and in severe cases, it is hard to eliminate immediately closed, and reported to the local people's Government, education, and rule of law section. 9, the school should always check the internal walls, retaining walls, ponds, railings, handrails, doors, Windows, staircases and a variety of sports, extracurricular activities, facilities such as fire safety, infrastructure security, unsafe facility to immediately repair and demolition to ensure that teachers and students work, learn, live venues and facilities are safe and reliable. Song Lin Xiang Liu Jia ping elementary school March 2016 song Lin Xiang Liu Jia pingprimary school fire safety systems to enhance fire safety, protection of public property and the life and property safety of teachers and students, school fire safety into day-to-daymanagement, is developing the following fire safety system. 1, strengthen fire safety education of the whole school. According to the requirements of the Fire Services Act, so that everyone has of keeping fire control safety, protecting fire control facilities, fire prevention, reports of fire 玻璃钢管注：D0为管外径。

— 7层 5层 4层 — 3层 2层 1层 5.1.5 化学建材管节、管件贮存、运输过程中应采取防止变形措施，并符合下列规定： 1 长途运输时，可采用套装方式装运，套装的管节间应设有衬垫材料，并应相对固定，严禁在运输过程中发生管与管之间、管与其他物体之间的碰撞；

2 管节、管件运输时，全部直管宜设有支架，散装件运输应采用带挡板的平台和车辆均匀堆放，承插口管节及管件应分插口、承口两端交替堆放整齐，两侧加支垫，保持平稳；

3 管节、管件搬运时，应小心轻放，不得抛、摔、拖管以及受剧烈撞击和被锐物划伤；

4 管节、管件应堆放在温度一般不超过40℃，并远离热源及带有腐蚀性试剂或溶剂的地方；室外堆放不应长期露天曝晒。堆放高度不应超过2.0m，堆放附近应有消防设施(备)。

5.1.6 橡胶圈贮存、运输应符合下列规定：

1 贮存的温度宜为-5～30℃，存放位置不宜长期受紫外线光源照射，离热源距离应不小于1m；

2 不得将橡胶圈与溶剂、易挥发物、油脂或对橡胶产生不良影响的物品放在一起； 3 在贮存、运输中不得长期受挤压。

5.1.7 管道安装前，宜将管节、管件按施工方案的要求摆放，摆放的位置应便于起吊及运送。

5.1.8 起重机下管时，起重机架设的位置不得影响沟槽边坡的稳定；起重机在架空高压输电线路附近作业时，与线路间的安全距离应符合电业管理部门的规定。

5.1.9 管道应在沟槽地基、管基质量检验合格后安装；安装时宜自下游开始，承口应朝向施工前进的方向。

5.1.10 接口工作坑应配合管道铺设及时开挖，开挖尺寸应符合施工方案的要求，并满足下列规定：

1 对于预应力、自应力混凝土管以及滑入式柔性接口球墨铸铁管，应符合表5.1.10的规定；

表5.1.10 接口工作坑开挖尺寸管外径D0 管材种类 (mm) ≤500 600～1000 1100～1500 ＞1600 承口外径加 (mm) 800 承口长凝土管、滑入式柔性接口球墨铸铁管 1000 200 1600 200 1800 500 度加450 400 承口前承口后 (mm) 200 宽度长度(mm) 深度预应力、自应力混 2 对于钢管焊接接口、球墨铸铁管机械式柔性接口及法兰接口，接口处开挖尺寸应满足操作人员和连接工具的安装作业空间要求，并便于检验人员的检查。

5.1.11 管节下入沟槽时，不得与槽壁支撑及槽下的管道相互碰撞；沟内运管不得扰动原状地基。

5.1.12 合槽施工时，应先安装埋设较深的管道，当回填土高程与邻近管道基础高程相同时，再安装相邻的管道。

5.1.13 管道安装时，应将管节的中心及高程逐节调整正确，安装后的管节应进行复测，合格后方可进行下一工序的施工。

5.1.14 管道安装时，应随时清除管道内的杂物，暂时停止安装时，两端应临时封堵。