室内外回填土方施工方案.doc

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 "prevent, rescue each 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. 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陕西中医学院F座教师安置楼 室内外回填工程施工方案

目 录
第一卷：工程概况…………………………………………………1
第二卷：施工准备…………………………………………………1
第三卷：施工方法 ……………………………………………… 2
第四卷：填土的压实………………………………………………4
第五卷：质量控制与检验…………………………………………5
第六卷：验收标准…………………………………………………5
第七卷：主要保证措施……………………………………………6
第八卷：安全技术措施……………………………………………6
第九卷：安全保证措施……………………………………………6
第十卷：环境保护措施………………………………………………7
第六卷：质量记录…………………………………………………7

室内外回填土方施工方案
一、工程概况
本工程由咸阳中医学院集资建设，西安现代建筑设计有限责任公司设计， 陕西工程监理有限公司监理，浙江欣捷建设有限公司西安分公司施工。本工程由一个单位工程构成，总建筑面积为：31410.27㎡，地下1层地上26层，剪力墙结构，其中地下室1148.53㎡，住宅234户。地下停车库一层，建筑面积3484.51㎡，属于框架结构。总工期640天，地下室车库周围1.5米以内采用2:8灰土回填，以外采用素土回填，压实系数为0.95，室内采用素土回填。
二、施工准备
1、材料要求
1）土不得含有有机物、废旧塑料、垃圾等杂物，粒径不大于15㎜
2）石灰不得含有未熟化的生石灰块及其他杂质，粒径不大于5㎜
2、机械准备
1）挖机1台，30装载机1台，立式打夯机2台，小型自卸三轮车4辆，8吨自卸翻斗车2辆，抽水泵2台，
3、劳动计划
劳动力30人
4、施工条件
1）将基槽表面杂物清除干净，并对原基土夯压密实不少于一遍，并会同监理及相关方对槽底验收签认，以实际标高调整回填批数，对控制虚铺厚度标桩已设置到位。
5、进度计划
安排实力比较雄厚的约30人的作业班组，分昼夜两班施工，回填土计划从2012年10月25日开始 30 天完成。等待具备条件后，立即组织两班昼夜连续施工不间断；
三、施工方法
1、工艺流程：
灰土回填工艺：验土、灰质量→按配合比拌和→基坑清理→分层虚铺耙平→夯实→检验密实度→找平验收
素土回填工艺：验土质量→基坑清理→分层虚铺耙平→夯实→检验密实度→找平验收
2、操作工艺：
1) 应有夯填击实试验报告
2) 回填前将槽底垃圾清理干净，并应经试验铺填夯压，确定每层虚铺厚度。
3) 按设计或相应规范要求对原材质量进行鉴定，灰土严格按2：8配合比拌制灰土，采用机械拌和，要求达到均匀，颜色一致，并按击实试验报告所要求的含水率来控制含水量，现场以手握成团，两指轻捏即散为宜，若过湿，应晾干，若过干，应洒水，保持最佳含水量为止。灰土要随拌随用。
4) 回填时应按确定的虚铺厚度分层夯实，夯实采用立式打夯机，反复夯压不少于4遍，每层夯实后经环刀取样检测（每50-100㎡抽查不少于一个点，且尽量在柱基下），符合要求后，方可继续回填。
5) 回填土最好采用整段施工，若分段施工时，上下两层的接缝距离不得小于50㎝，接缝处应作成踏步槎且夯压密实。
6) 灰土应当日铺填夯实，不得隔日夯打。夯实后的灰土表面应作临时覆盖，避免日晒雨淋，雨季施工时，应采取防雨或排水措施，30h内不得受水浸泡。若淋雨或浸泡应将松软土挖除重做。
3、质量标准：
1) 主控项目；标高：－50mm，夯实系数： 灰土0.95
2) 一般项目：粒径： 灰土≤15 生石灰≤5
分层厚度≤250 表面平整： 灰土≤15mm
4、人工填土方法
用手推车送土，以人工用铁锹、耙、锄等工具进行回填土。填土应从场地最低部分开始，由一端向另一端自下而上分层铺填。每层虚铺厚度，用人工木夯夯实时不大于20cm，用打夯机械夯实时不大于25cm。
深浅坑（槽）相连时，应先填深坑（槽），相平后与浅坑全面分层填夯。如采取分段填筑，交接处应填成阶梯形。墙基及管道回填应在两侧用细土同时均匀回填、夯实，防止墙基及管道中心线位移。
夯填土采用人工用60～80kg的木夯或铁、石夯，由4～8人拉绳，二人扶夯，举高不小于0.5m，一夯压半夯，按次序进行。较大面积人工回填用打夯机夯实。两机平行时其间距不得小于3m，在同一夯打路线上，前后间距不得小于10m。
5、机械填土方法
1.装载机机填土
填土应由下而上分层铺填，每层虚铺厚度不宜大于30cm。大坡度堆填土，不得居高临下，不分层次，一次堆填。推土机运土回填，可采用分堆集中，一次运送方法，分段距离约为10~15m，以减少运土漏失量。土方推至填方部位时，应提起一次铲刀，成堆卸土，并向前行驶0.5~1.0m，利用推土机后退时将土刮平。用推土机来回行驶进行碾压，履带应重叠宽度的一半。填土程序宜采用纵向铺填顺序，从挖土区段至填土区段，以40~60m距离为宜。
2．汽车填土
自卸汽车为成堆卸土，须配以推土机推土、摊平。每层的铺土厚度不大于30~50cm（随选用压实机具而定）。填土可利用汽车行驶作部分压实工作，行车路线须均匀分布于填土层上。汽车不能在虚土上行驶，卸土推平和压实工作须采取分段交叉进行。
3、地下车库顶采用机械赶土回填方法：
采用小型自卸三轮车拉运土方，用推土机赶土法向前推碾，铺土应分层进行，每次铺土厚度不大于30cm，每层铺土后，利用推土机返回将地表面刮平、碾压、反复夯压不少于4遍，轮距搭接不少于20㎝，边角处用立式打夯机补夯密实，符合要求后，方可继续回填。
4、为了保护车库四周外墙卷材防水及保温板，墙边500mm宽土，采用自来水灌实，既能灌实回填土，又能给外墙防水做蓄水试验，如有问题及时处理；
四、 填土的压实
1、压实的一般要求
1．密实度要求
填方的密实度要求和质量指标通常以压实系数久。表示。压实系数为土的控制（实际）干土密度ρd与最大干土密度ρdmax的比值。最大干土密度ρdmax是当最优含水量时，通过标准的击实方法确定的。密实度要求一般由设计根据工程结构性质、使用要求以及土的性质确定，如未作规定，可参考表6-58数值。
压实填土的质量控制 表6-58
结构类型
填土部位
压实系数λc
控制含水量（%）
砌体承重结构和框架结构
在地基主要受力层范围内
≥0.97
wop±2
在地基主要受力层范围
≥0.95
注：1．压实系数λc为压实填土的控制千密度ρd与最大干密度ρdmax的比值，wop为最优含水量。
2．地坪垫层以下及基础底面标高以上的压实填土，压实系数不应小于0.94。
压实填土的最大干密度ρdmax（t/m3）宜采用击实试验确定。当无试验资料时，可按下式计算：
（6-25）
式中 η——经验系数，对于粘土取0.95，粉质粘土取0.96，粉土取0.97；
ρw——水的密度（t/m3）；
ds——土粒相对密度；
wop——最优含水量（%）（以小数计），可按当地经验或取wp+2（wp——土的塑限），或参考表6-55取用。
2．含水量控制
参见6-1-9-1一节。
3．铺土厚度和压实遍数
填土每层铺土厚度和压实遍数视土的性质、设计要求的压实系数和使用的压（夯）实机具性能而定，一般应进行现场碾（夯）压试验确定。表6-59为压实机械和工具每层铺土厚度与所需的碾压（夯实）遍数的参考数值，如无试验依据，可参考应用。
填土施工时的分层厚度及压实遍数 表6-59
压实机具
分层厚度（mm）
每层压实遍数
平碾
250~300
6~8
振动压实机
250~350
3~4
柴油打夯机
200~250
3~4
人工打夯
不大于200
3~4
五、质量控制与检验
1．填土施工过程中应检查排水措施，每层填筑厚度、含水量控制和压实程序。
2．对有密实度要求的填方，在夯实或压实之后，要对每层回填土的质量进行检验，一般采用环刀法（或灌砂法）取样测定土的干密度，求出土的密实度，或用小轻便触探仪直接通过锤击数来检验干密度和密实度，符合设计要求后，才能填筑上层。
3．基坑和室内填土，每层按100~500m2取样1组；场地平整填方，每层按400~900m2取样1组；基坑和管沟回填每20~50m取样1组，但每层均不少于1组，取样部位在每层压实后的下半部。用灌砂法取样应为每层压实后的全部深度。
4．填土压实后的干密度应有90%以上符合设计要求，其余10%的最低值与设计值之差，不得大于0.08t/m3，且不应集中。
5．填方施工结束后应检查标高、边坡坡度、压实程度等，检验标准参见表6-63。
填土工程质量检验标准（mm） 表6-63
项
序
检查项目
允许偏差或允许值
检查方法
桩基、基坑、基槽
场地平整
管沟
地（路）面基础层
人工
机械
主控项目
1
标高
-50
±30
±50
-50
-50
水准仪
2
分层压实系数
设计要求
按规定方法
一般项目
1
回填土料
设计要求
取样检查或直观鉴别
2
分层厚度及含水量
设计要求
水准仪及抽样检查
3
表面平整度
20
20
30
20
20
用靠尺或水准仪
六. 验收标准
6.1 主控项目。
(1)回填的土料,必须符合设计要求和施工规范的规定。
(2)回填土必须按规定分层夯压密实,夯实系数不小于0.95。
6.2 一般项目。
七. 主要保证措施
7.1 质量保证措施。
(1)严格选用回填土料,控制含水量、夯实遍数。不同的土填筑时,应按土类有规则地分层铺填,将透水性大的土层置于透水性较小的土层之下,不得混杂使用,以利水分排除和基土稳定,并可避免在填方内形成水囊和产生滑动现象。
(2)严格控制每层铺土厚度,严禁汽车直接向基坑中倒土,并禁止用浇水方法使土下沉,代替夯实。
(3)机械夯压不到的边角部位,应用细粒土料回填,并仔细夯实。
(4)回填土后应有一段自然沉实的时间,测定沉降变化,稳定后再进行下道工序施工。
(5)雨天不宜进行回填施工,必须回填时,应分段尽快完成,且宜采用砂土、石屑等填料,周围应有防雨和排水措施。
八、安全技术措施
1）打夯机操作人员必须穿绝缘胶鞋，戴绝缘手套，派专人扶电缆，严防触电事故发生，施工时，现场电工应经常检查用电设备，确保漏电保护器安全有效。
2）车辆从坑边向坑内卸土时，要有阻挡防滑措施，且有专人指挥监督，严防伤害事故发生
3）机械设备使用前应进行检查，确认正常，方可使用。
九、安全保证措施
1、施工前必须组织全体施工人员进行安全交底，进入现场必须佩戴好安全帽，带好个人防护用品。
2、施工前必须检查机械线路是否符合要求，用电保护接地良好，各传动部件均正常后方可使用。
3、操作和传递导线人员必须穿戴绝缘胶鞋和绝缘手套。
4、蛙式打夯机作业时电缆线不应张拉过紧，应保证有3～4m的余量，递线人员应依照夯实线路随时调整，电缆线不得打结和缠绕，作业中移动电缆线时应停机进行。
5、操作时不得用力推拉或压手柄，转弯时不得用力过猛，严禁急转弯，行驶速度控制在6m/min。
6、两台以上夯机在同一工作面时，左右间距不小于5m，前后间距不小于10m.
7、作业后切断电源，卷好电源，做好清洁保养工作，如有破损，应及时修理或更换。维修或作业间断应切断电源。
8、回填土时，注意边坡变化，由于回填时夯实的振动有可能造成局部坍塌，如有异常情况应及时通知管理人员，并加强自我防护意识，采取即时措施。
十、环境保护措施
1）马路应及时清扫，洒水湿润，控制扬尘发生
2）运土车辆必须封闭运输，严防沿途抛洒
十一、质量记录
1、击实试验报告
2、取土试件报告
3、灰土检验批验收记录
4、隐蔽验收记录

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