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    zb倒虹吸开挖高边坡施工安全专项方案.doc

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    zb倒虹吸开挖高边坡施工安全专项方案.doc

    倒虹吸开挖高边坡施工安全专项方案1、编制依据及原则1.1、编制依据(1) 建设工程安全生产管理条例中华人民共和国国务院令第 393号。 (2) 水利水电工程开挖施工技术规范(3) 水利水电工程施工安全技术规程(4) 中华人民共和国建设部  (建质2004213号)危险性较大工程安全专项施工方案编制及专家论证审查办法(5) xx渠道倒虹吸开挖图(14/4)设计蓝图1.2、编制原则(1) 遵照招标文件及施工合同条款中对安全的要求,建管处,监理单位对安全下达的要求及指令;(2) 坚持“安全第一,预防为主,综合治理”的原则;(3) 南水北调中线干线工程主要技术标准汇编。1.3、安全总目标生产性死亡为0,因工重伤率0,因工轻伤率低于7,无重大机械、火灾、交通和损失10万元以上事故发生;保护环境;无职业病发生,做到员工以健康的身体在良好的环境中工作。创建一流的安全、文明、环保新工地。2、工程总述及本标段施工特点2.1、工程总述(1) 工程概况xx倒虹吸工程位于河南省xx市xx镇xx村东北,是南水北调中线一期工程总干渠穿越xx干流的交叉建筑物。xx倒虹吸工程轴线总长1337.00m,起点桩号为TS115+190,终点桩号为TS116+527。主要建筑物有进口渐变段、退水闸段、进口检修闸、倒虹吸管身段、出口节制闸、出口渐变段、退水闸等。xx倒虹吸工程上游渠道设计水位140.624m,下游渠道设计水位139.924m,建筑物分配水头0.7m。xx倒虹吸工程设计流量330m³/s,加大流量400m³/s。南水北调中线一期干线工程为等工程,输水建筑物为1级建筑物。xx渠道倒虹吸工程为输水工程的一部分,主要建筑物为1级,次要建筑物为3级。其中xx渠道倒虹吸管身段、连接段及渐变段、进出口闸室段和退水闸闸室段等主要建筑物均为1级建筑物。退水闸泄槽、消力池等次要建筑物为3级建筑物。(2) 工程地质工程区地势开阔,地形起伏,地貌形态由孤山(xx)及河谷组成。xx河谷不对称,发育有河床、低漫滩、高漫滩及级阶地。进口渐变段地基主要为大理岩,局部(基坑北侧)为采石废碴。采石废碴厚约1.0m,松散、强透水性;大理岩岩体破碎,沿层面、裂隙岩溶发育,一般具中等强透水性。进口过渡段挖方地基和填方地基主要由采石废碴组成,基础下部采石废碴有效厚度0.72.0m,下伏强风化大理岩夹片岩,承载力标准值大于1.0MPa。进口闸室段基础主要置于采石废碴,局部(基坑南侧)揭露大理岩夹片岩,东侧中部附近可能分布全新统下部含砾中砂层。采石废碴总厚度3.018.0m,基础下部有效厚度0.52.0m。下伏强风化片岩强度接近土体,强度较低。倒虹吸管身段该段位于xx河床、漫滩和左岸级阶地,由进、出口斜管段及水平段组成。进口斜管段:地基和边坡从上至下由采石废碴、全新统下部含砾中砂、砾砂层组成,下伏上第三系砂砾岩和强风化大理岩。采石废碴厚2.016.0m;全新统下部含砾中砂和砾砂底面呈斜坡状,含砾中砂厚4.06.0m,砾砂厚2.54.0m。基坑开挖揭露了第四系孔隙含水层,全新统下部砂层具中等强透水性,水量丰富。虹吸管水平段:地基主要为上第三系砂砾岩;钻孔SCHBH19(桩号115+474)附近地基为全新统下部砾砂,基础下部砾砂有效厚度约1.0m;钻孔SCHBH57(桩号116+363116+373)附近地基为上第三系含砾砂岩,基础下部含砾砂岩有效厚度约2.5m。基坑开挖揭露了第四系孔隙含水层和上第三系砂砾岩含水层,两含水层水量丰富。出口斜管段:地基从上至下主要由全新统下部砂壤土、细砂、砾砂和上第三系砂砾岩组成,砂壤土呈薄层状分布于I级阶地表层,厚1.01.7m,细砂厚2.23.0m,砾砂厚约7.5m;砂砾岩厚度大于25.0m,局部夹粘土岩、砂岩透镜体。基坑开挖揭露了第四系孔隙含水层,全新统下部砂层具中等强透水性,水量丰富。出口闸室段地基为全新统下部砂壤土层,下部为全新统下部细砂、砾砂层。壤土层厚约1.5m,细砂层厚2.55.0m,砾砂层厚约7.0m。出口渐变段地基主要由全新统下部砂壤土、细砂、砾砂和上第三系砂砾岩组成。砂壤土层厚1.01.5m,细砂层厚2.5m,砾砂层厚约7.5m,砂砾岩厚度大于25.0m。退水闸段由退水闸段、斜坡段、消力池段、海漫段组成,位于xx右岸。主要由采石废碴、大理岩、全新统下部砾砂和全新统上部含砾中砂组成。采石废碴松散状,含砾中砂呈松散稍密状,大理岩承载力标准值大于1.0MPa。2.2、本标段施工特点本标段边坡开挖高度约为1117m,且开挖断面较大,我部开挖采用每3m4m一层自上而下分层进行开挖,上层工作面与下层工作面相距50100m左右(详见土石方开挖方案)。2.3、主要施工机械设备序号设备名称规格备 注1装载机3m3道路维护、局部装渣和回填装渣2反向铲1.6m3开挖、装渣3自卸汽车15t4空压机20m³5电钻ZDQ18型梅花电钻6洒水车文明施工7油罐车3、高边坡土方开挖危险源及相关控制措施3.1、土方开挖工程中主要危险源(1) 坍塌(2) 触电(3) 机械伤害(4) 高处坠落(5) 物体打击3.2、引起事故的主要原因及防范措施(1) 塌方或滑坡开挖较深,放坡不够,或挖方尺寸不够,将坡脚挖去,或通过不同土层时,没有根据土的特性分别放成不同坡度,致使边坡失去稳定而造成塌方。为了防止以上原因引起塌方事故发生,在开挖时,应严格按照设计图纸开挖边坡线进行放坡,对于不同特性的土层,采用不同的坡比进行开挖,具体坡比参见我部上报的土石方开挖方案P.8页。在有地表水、地下水作用的土层开挖基坑(槽)时,未采取有效的降、排水措施,使土层湿化,粘聚力降低,在重力作用下失去稳定而引起塌方。面对以上问题时,必须在基坑(槽)开挖前,采用集水井等措施进行基坑降排水处理,等基坑内水位降至开挖面以下方可进行开挖。边坡顶部堆载过大,或受车辆、施工机械等外力振动影响,使坡体内剪切应力增大,土体失去稳定而导致塌方。对于此类问题,必须对边坡顶部堆载物进行清除,对于车辆等设置安全距离,以保证边坡的稳定。土质松软,开挖次序、方法不当而造成塌方。为了防止此类原因造成边坡塌方,在开挖时,严格遵守自上而下的开挖顺序进行施工,禁止自下至上进行开挖。(2) 触电伤害工程外侧边缘距外电高压线路未达到安全距离,用电设备未做接零或接地保护,保护设备性能失效,移动或照明使用高压,违规使用和操作电气设备,对人身造成伤害或损害。采取措施为:严格按照国家用电规范进行电缆选型及电路布置,对可能造成人员伤害的设备设置警戒,并且定期对设备进行查检。(3) 机械伤害机械产生的噪声使操作者的知觉和听觉麻痹,导致不易判断或判断错误造成人身伤害或机械损坏;缺乏对动机械危险性的认识而产生操作失误;技术不熟练,操作方法不当;操作机器的变化,如改变操作条件或改进安全装置时;单调的操作使操作者疲劳而误入危区;机器的安全防护设施不完善诱发事故。针对以上原因可能引发的事故,要求设备操作者必须具备相关操作资质方可进行上机操作,设备操作人员不可疲劳驾驶。在设备操作使用过程中,若设备出现故障,应及时进行维修,严禁设备“带病上岗”。(4) 高处坠落对于可能造成安全事故边坡,应该在施工现场设立、架立安全标志牌,设立维护设施,标明至边坡边缘的安全距离,并且对高边坡周边杂物及时进行清理,防止造成人员从高边坡坠落。(5) 物体打击高边坡四周未做好防护措施,造成物体从高边坡坠落伤及下面施工人员及机械;在高边坡上下交叉作业;造成物体从高边坡坠落伤及下面施工人员及机械;在高边坡四周堆放杂物,造成物体从高边坡坠落伤及下面施工人员及机械。为了避免以上问题造成的人员伤害或设备损坏,应在高边坡四周做好安全防护栏杆、警戒线、警示牌等醒目标志,严禁在高边坡边缘堆放杂物,避免杂物掉落对下方人员、设备造成伤害。4、土方开挖工程安全技术设计(1) 在施工前详细复查深挖地段的工程地质资料;根据现场考察及设计要求,编制详细的土方开挖施工方案,报监理工程师审批后实施。(2) 做好施工场地防洪排水工作,全面规划场地,平整各部分的标高,保证施工场地排水通畅不积水,两侧开口线设置必要的截水沟、排水沟。(3) 根据设计横断面的边坡坡比、台阶宽度,确定顶部的开挖线。(4) 邻近建筑物开挖时,保持一定的距离和坡度,以免在施工时影响邻近建筑物的稳定,并在施工中对建筑物进行沉降和位移观测。(5) 边坡严格按设计要求放坡,并预留3050 cm保护层;施工当中如需临时放坡,应根据下表进行放坡:开挖临时边坡值土的类别边坡值(高:宽)砂土1:1.5一般性粘土硬1:1硬塑1:1.25软1:1.5碎石土充填坚硬、硬塑粘性土1:1充填砂土1:1.5(6) 开挖时弃土及时运出,禁止在高边坡附近临时堆土。(7) 开挖过程中对边坡进行日常监测,安排专人每天巡视高边坡开挖面,对发现开裂或沉陷的部位及时采取应对措施。在两侧边坡上设置沉降监测点,定时进行监测,做好高边坡沉降稳定预测,及时采取稳妥的施工措施进行加固处理。(8) 挖土应自上而下,逐层进行,严禁先挖坡脚或逆坡挖土,以免坍塌。(9) 挖掘机离边坡有一定的安全距离,以防塌方,造成翻车事故,一般距离不小于1-1.5m。(10) 根据坡比变化,每级马道形成后,及时做好各级马道上的排水系统,以防止雨水对边坡的冲刷。雨季过后,对于被水冲毁的部分边坡,及时填土夯实,以避免边坡进一步坍塌。(11) 在开挖基坑低洼处设计集水井,及时用水泵抽排集水;5、一般施工要求(1) 配备足够的安全防护品:口哨、安全帽、红绿旗、警示牌、标志、红色警示灯、铁丝网。(2) 开工前检查机械:挖掘机、装载机、推土机、振动碾等设备是否处于良好状态、各项制动是否有效,电缆线有无裸漏情况。(3) 施工便道急弯处及陡坡地段须挂标志警示牌。(4) 出渣道路与公路相交部位须挂标志警示牌,并有专人警戒。(5) 严禁穿硬底、带钉、易滑、高跟、拖鞋或赤脚进入施工现场;(6) 运输车严禁超载超速。(7) 边坡开口线四周设防护网或安全标志。(8) 开挖过程中,如出现滑坡迹象时,应立即停止施工,采取应急抢救措施,并及时通知监理人。(9) 夜间施工时,施工场地配备足够的照明设备。(10) 土方开挖时,设专人指挥各种施工机械,防止机械伤人或坠土伤人,挖掘机的工作范围内,不准进行其它工作。(11) 禁止酒后作业,严禁嬉戏打闹,禁止操作与自己无关的机械设备(12) 边坡上方有人工作时,边坡下方不准有人停留或通行。(13) 整修边坡时,应从上而下顺序进行,坡面上的松动土、石块必须及时清除。严禁在危石下方作业、休息有人停留或通行。 (14) 遇有大雨、大雪、大雾及六级(含六级)以上大风等恶劣天气时,停止作业。 (15) 弃渣时,应有专人指挥机械的运输车辆,运输车辆不得直接在坡顶边缘卸渣,应在坡顶边缘一定安全距离的位置卸渣,再由推土机推出边缘。 (16) 严禁在未熄火的大型机械作业半径范围内工作和休息。(17) 对所有各种机械设备进场后,必须由合同物资部负责人会同安全员和使用机械的人员共同对该机械设备进行进场验收工作,经验收发现安全防护装置不齐全的或有其它故障的应退回进行维修和安装。使用前要对设备使用人员进行必要的安全技术交底和教育工作使用人员必须严格执行交底内容及操作规程操作。(18) 各种机械设备必须专人专机,凡属特种设备,其操作负责人要按规定每周对施工现场的所有机械设备进行检查,发现问题及隐患及时解决处理,确保机械设备的完好,防止机械伤害事故的发生。(19) 专职电工对现场电气设备每天进行巡查,项目部每月对施工用电系统、漏电保护器进行一次全面系统的检查。(20) 配电箱设在干燥通风的场所,周围不得堆放任何妨碍操作、维修的物品,并与被控制的固定设备距离不得超过 3m。安装和使用按照“一机、一闸、一箱、一漏”的原则,不能同时控制两台或两台以上的设备,否则容易发生误操作事故。(21) 配电箱应标明其名称、用途,并做出分路标志、门应配锁,现场停止作业 1h以上时,应将开关箱断电上锁。(22) 必须由持有合格证件的专职电工,负责现场临时用电管理及安拆。6、安全施工保证体系及专项应急预案6.1安全施工保证体系我部在工程施工前建立了安全施工保证体系,安全施工保证体系分组织保证、工作保证、制度保证三个方面。影响因素有人为因素、客观因素。工程安全生产管理体系见图安全生产管理体系组织机构图,同时认真地编制各项专项施工组织设计,并严格按专项施组的要求进行管理、实施。6.2高边坡施工专项应急预案针对施工过程当中存在各种突发事件,我部将责任明确到人,力争把事故控制在最小。当紧急情况发生时,为将事故和损失降低到最小程度,特建立突发事件应急机制,制定相应的应急预案。6.2.1坍塌事故应急预案(1) 发生坍塌事故后,应立即报告应急抢险指挥小组,由项目经理负责现场总指挥。发现事故发生人员首先高声呼喊,通知现场安全员,并由安全员组织施工人员紧急撤离至安全区域。(2) 如有人员受伤,立即拨打“120”急救中心电话取得联系,详细说明事故地点、严重程度,并派人到路口接应。(3) 在向有关部门电话求救的同时,对受伤人员在现场安全地带采取可行的应急措施,如现场包扎止血等措施。防止受伤人员流血过多造成死亡事故发生。对呼吸、心跳停止的伤员予以心脏复苏。(4) 若事故严重,要立即上有关部门,并启动项目部应急救援预案。(5) 如有人员被掩埋,要采取有效安全防护措施后,组织人员按部位进行人员抢救,尽快解除重物压迫,减少伤员挤压综合症的发生,并将其转移至安全地方,防止事故发展扩大。6.2.2触电事故应急预案现场人员要迅速拉闸断电,尽可能地立即切断总电源(关闭电路),也可用现场得到的干燥木棒或绳子等非导电体使触电人员脱离带电体。将伤员立即脱离危险地方,组织人员进行抢救。若发现触电者呼吸或呼吸心跳均停止,则将伤员仰卧在平地上或平板上立即进行人员呼吸或同时进行体外心脏按压。立即拨打120 向当地急救中心取得联系,应详细说明事故地点、受伤程度、联系电话,并派人到路口接应。通知有关现场负责人。维护现场秩序,严密保护事故现场。6.2.3高处坠落事故应急预案迅速将伤员脱离危险地方,移至安全地带。保持呼吸道畅通,若发现窒息者,应及时解除其呼吸机能障碍,应立即解开伤员衣领,消除伤员口鼻、咽、喉部的异物、血块、分泌物、呕吐物等。有效止血,包扎伤口。视伤情采取报警或简单处理后去医院检查。伤员有骨折、关节伤、肢体挤压伤、大块软组织伤要进行简易固定。若伤员有断肢情况发生,应尽量用干布包裹,转送医院。记录伤情,现场救护人员应边抢救边记录伤员的受伤部位、受伤程度等第一手资料。立即拨打120 向当地急救中心取得联系,应详细说明事故地点、受伤程度、联系电话,并派人到路口接应。通知有关现场负责人,维护现场秩序,严密保护事故现场。更多参考内容:河北省某渠道倒虹吸工程施工投标文件溢洪道工程渡汛方案洪河倒虹吸高温季节施工混凝土温控措施的应用高压引水隧洞施工方案(英文版 ) Two regulations promulgated for implementation is in the party in power for a long time and the rule of law conditions, the implementation of comprehensive strictly strategic plan, implementation in accordance with the rules and discipline to manage the party, strengthen inner-party supervision of major initiatives. The two regulations supporting each other, the < code > adhere to a positive advocate, focusing on morality is of Party members and Party leading cadres can see, enough to get a high standard; < rule > around the party discipline, disciplinary ruler requirements, listed as "negative list, focusing on vertical gauge, draw the party organizations and Party members do not touch the" bottom line ". Here, the main from four square face two party rules of interpretation: the first part introduces two party Revised regulations the necessity and the revision process; the second part is the interpretation of the two fundamental principles of the revision of laws and regulations in the party; the third part introduces two party regulations modified the main changes and needs to grasp several key problems; the fourth part on how to grasp the implementation of the two regulations of the party. < code > and < Regulations > revised the necessity and revised history of the CPC Central Committee the amendment to the Chinese Communist Party members and leading cadres honest politics several guidelines > and < Chinese Communist Party discipline and Punishment Regulations > column 1 by 2015 to strengthen party laws and regulations focus. Two party regulations revision work lasted a Years, pooling the wisdom of the whole party, ideological consensus, draw historical experience, respect for the wisdom of our predecessors, which reflects the unity of inheritance and innovation; follow the correct direction, grasp the limited goals, adhere to the party's leadership, to solve the masses of the people reflect a focus on the problem. The new revision of the < code > and < rule >, reflects the party's 18 and the eighth session of the third, the spirit of the fourth plenary session, reflecting the experience of studying and implementing the General Secretary Xi Jinping series of important speech, reflects the party's eighteen years comprehensive strictly practice. (a) revised two regulations of the party need of < the ICAC guidelines > in < in 1997 Leaders as members of the Communist Party of China clean politics certain criteria (Trial) > based on revised, the promulgation and implementation of January 2010, to strengthen the construction of the contingent of leading cadres play an important role. But with the party to manage the party strictly administering the deepening, has not been able to fully meet the actual needs. Content is too complicated, "eight prohibition, 52 are not allowed to" hard to remember, and also difficult to put into practice; the second is concisely positive advocated by the lack of prohibited provisions excessive, no autonomy requirements; the third is banned terms and discipline law, both with the party discipline, disciplinary regulations repeat and Criminal law and other laws and regulations repeat; the fourth is to "clean" the theme is not prominent, not for the existing problems, and is narrow, only needle of county-level leading cadres above. < rule > is in 1997 < Chinese Communist Party disciplinary cases (Trial) > based on revision, in December 2003 the promulgation and implementation, to strengthen the construction of the party play very important role. Along with the development of the situation, which many provisions have been unable to fully meet the comprehensive strictly administering the practice needs. One is Ji law, more than half of the provisions and criminal law and other countries laws and regulations Repetition; two is the political discipline regulations is not prominent, not specific, for violation of the party constitution, damage the authority of Party Constitution of misconduct lack necessary and serious responsibility to pursue; third is the main discipline for the leading cadres, does not cover all Party members. Based on the above situation, need to < the criterion of a clean and honest administration > and < rule > the two is likely to be more relevant regulations first amendment. By revising, really put the authority of Party discipline, the seriousness in the party tree and call up the majority of Party members and cadres of the party constitution of party compasses party consciousness. (II) two party regulations revision process the Central Committee of the Communist Party of China attaches great importance to two regulations revision . Xi Jinping, general books recorded in the Fifth Plenary Session of the eighth session of the Central Commission for Discipline Inspection, on the revised regulations < > made clear instructions. According to the central deployment, the Central Commission for Discipline Inspection from 2014 under six months begin study two regulations revision. The Standing Committee of the Central Commission for Discipline Inspection 4 review revised. Comrade Wang Qishan 14 times held a special meeting to study two regulations revision, amendment clarifies the direction, major issues of principle, path and target, respectively held a forum will listen to part of the province (area) secretary of the Party committee, Secretary of the Discipline Inspection Commission, part of the central ministries and state organs Department The first party committee is mainly responsible for people, views of experts and scholars and grassroots party organizations and Party members. Approved by the Central Committee of the Communist Party of China, on 7 September 2015, the general office of the Central Committee of the Party issued a notice to solicit the provinces (autonomous regions, municipalities) Party, the central ministries and commissions, state ministries and commissions of the Party (party), the General Political Department of the military, every 3 people organization of Party of two regulations revision opinion. Central Commission for Discipline Inspection of extensive solicitation of opinions, careful study, attracting, formed a revised sent reviewers. In October 8 and October 12, Central Committee Political Bureau Standing Committee and the Political Bureau of the Central Committee After consideration of the two regulations revised draft. On October 18, the Central Committee of the Communist Party of China formally issued two regulations. Can say, two laws amendment concentrated the wisdom of the whole party, embodies the party. Second, < code > and < Regulations > revision of the basic principles of two party regulations revision work and implement the party's eighteen, ten eight plenary, the spirit of the Fourth Plenary Session of the Eleventh Central Committee and General Secretary Xi Jinping important instructions on the revised < low political criterion > and < Regulations >, highlighting the ruling party characteristics, serious discipline, the discipline quite in front of the law, based on the current, a long-term, advance as a whole, with Bu Xiuding independent < rule > and < rule >. Main principle is: first, adhere to the party constitution to follow. The constitution about discipline and self-discipline required specific, awaken the party constitution of party compasses party consciousness, maintaining the authority of the constitution. General Secretary Xi Jinping pointed out that "no rules, no side round. Party constitution is the fundamental law, the party must follow the general rules. In early 2015 held the eighth session of the Central Commission for Discipline Inspection Fifth Plenary Session of the 16th Central Committee, Xi Jinping again pointed out that constitution is the party must follow the general rules, but also the general rules." the revision of the < code > and < rule > is Method in adhere to the regulations established for the purpose of combining rule of virtue is to adhere to the party constitution as a fundamental to follow, the constitution authority set up, wake up the party constitution and party rules the sense of discipline, the party constitution about discipline and self-discipline specific requirements. 4 second is to adhere to in accordance with the regulations governing the party and the party. The Party of rule

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