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1、political life; II is perfect party decision program and system, specification school hospital two level leaders especially head power exercise, promoted party decision scientific, and democratization; three is perfect cadres selection appointments system, widened selected people employing channel,
2、specification nominated recommended approach, formed right oriented and science selected people employing mechanism, from essentially solution selected what people, and What peoples problems with four is to improve the assessment mechanism, form a scientific evaluation system, rigid use of evaluatio
3、n findings, let dry good do bad, nothing really different. Five stick to collective leadership to implement democratic centralism, people responsible for organization and for unifying, superiors and subordinates responsible for combining formed catch levels, levels responsible for the level of polit
4、ical behavior. Focus on supervision and examination to prevent superior clean sweep package, put an end to subordinate shanquan ultra vires. Formed in good working order, procedures and scientific and normative hierarchy, clear responsibilities to fulfil their responsibilities, do the work industry,
5、 put an end to shortage of planted fields of others, their phenomena, preventing dislocation; insist on job matching and carefully gauge fully discharge our duties in accordance with law to prevent absence. Is to build a strong cadre of six. Strong political ideals and political direction, clear mis
6、sion for the people, and consciously safeguard the interests of the party and the State, strengthen party spirit, improve the ability of duty, inherit and carry forward the partys fine tradition and style, and consciously constructing the corruption line. Leadership above rate, to play the role of l
7、eading by example and demonstration features lead to set up good political style and level to level, with levels. Seven sound power operating mechanism. Play a role, mobilize all positive factors, and use various means to ensure standard operation of power. Guide cadres adhere to the discipline of p
8、arty members at the same time, play the role of the management and supervision of the Organization and the oversight role of the other actors to achieve combination of self-discipline and heteronomy. Power supervision Governor system of sound, helped create a good political environment. (D) an under
9、taking, loyal clean play. Was to serve as the highest standard of party members and cadres, and to firmly establish the purpose of serving as a comprehensive fundamental work of strictly administering the party. Enhanced perform the obligation of the party consciously and unconsciously, to implement
10、 truly serve the people wholeheartedly. Twist tight thought and action of total switch, prevent not rules, and not clean of problem occurred, cleaning for officer not for, and not due diligence, and not play of phenomenon, firmly grasp for people of interests insisted good of, and corrected wrong of
11、 this fundamental requirements, to solution individual members cadres wholeheartedly serving in inside deep roots tied have not prison, and not real problem and officer venture not real problem. Second, to persist in seeking truth from facts. In making decisions, focus on work, understanding of rela
12、ted policies and documents, proceed from reality, adhering to problem-oriented, symptomatic effects of policy. To keep up with the pace of the development of higher education and innovation consciousness training combined with practical work, strengthen work回旋钻钻孔灌注桩施工技术方案 一、概述 钻孔灌注桩基础,直径为800、900。 二、
13、施工准备 1、完成钻孔灌注桩的定位工作,平整场地,接通水、电,为钻机进场创造好条件。 2、钻机、护筒、钢筋、泥浆箱及各种相关材料,准备到位。 3、开工前召开现场技术交底会,使所有参与钻孔桩施工的施工人员明确本岗位的具体技术要求、职责,尽一切力量避免出现断桩。 4、跟商品混凝土厂联系有关标号、配合比、坍落度及运输方面等事宜。 5、处理好文明、安全施工有关事项,包括用电、排污、排放泥浆、三防等。 6、备足有关配件材料,做到开钻后中途不停站,检查所有测量仪器及施工机械,确保无误。 7、清理、清除钻孔桩桩位内杂物保证护筒顺利下放。 8、对自备发电机组进行试机,并进行停电时的快速发电、通电检验,确保停电
14、时能快速保证钻机重新开钻。 9、位于旱地钻孔灌注桩采用挖孔埋设钢护筒;位于现状河道内桥梁搭好水上排架。排架竖向均采用6米长直径16厘米的松木桩,并用道钉连接,中间用剪刀撑加固。 三、采用GPS150型钻机,正循环回转法施工。钻头采用尖头笼式钻头(主要用于粘土层中)及平头笼式钻头(主要用于粉砂土中)。 1、测量放样 详见测量施工方案。 2、埋设护筒 (1)护筒采用钢护筒,用5mm厚钢板制成,确保在护筒埋设稍有偏差时,保证钻头能正确就位,并能顺利提钻。 (2)旱地里护筒长度为1.2m,位于现状河道内的护筒长为2m(并外套钢护筒),因为上部土质较差,大部分为杂填土。原则上保证护筒进入原状土50cm,
15、并高出地面30cm左右,以确保不小于1m的水头压力,防止塌孔。如2m不够长,加长护筒。由于地质资料第一层土为粉质粘土,第二层均为淤泥质粉质粘土层,下为粉土夹粉质粘土,因此护筒埋深不宜穿透粉质粘土层,而使护筒外露段长一些有利。 (3)护筒就位用十字交叉法定位。 (4)护筒就位后,周围用粘土分层均匀填满夯实,确保泥浆不外漏,确保护筒位置正确牢固。 (5)如果底部土质很差。为防止护筒下沉,采取相应的加固措施,把护筒固定。 (6)护筒埋好后,测定好护筒顶标高,做好资料,请监理复核认可后,钻机就位。 (7)护筒埋好后,在桩机范围内整浇混凝土地坪,挖好泥浆排放沟。确保泥浆不外溢。 3、泥浆循环 在各桥位附
16、近各设置一个四根桩泥浆容量的泥浆池(泥浆比重1:3),用于泥浆循环,并及时组织泥浆车进行外运。 4、钻孔 (1)开钻前,配制好比重为1.3-1.4的泥浆进入泥浆池及孔内。 (2)调平好钻孔工作平台,保证钻孔平台水平并确保牢固,在钻孔过程中不发生倾斜位移。 (3)调整好钻机,保证钻杆竖直,使钻架吊点、钻机的转盘中心和桩位中心三点在一垂直线上。 (4)在钻孔过程中,随时检查平台的水平度,发现倾斜,及时调整,确保成孔垂直度。 (5)在粘土钻孔过程中,及时检查泥浆比重,控制在1.21.3之间。粘度控制在1622秒,发现不符,及时调整。 (6)钻孔作业分班连续进行,不中断。 (7)升降钻具时,保证操作平
17、稳,钻头提升时,防止发生碰撞护筒、孔壁及钩挂护筒底现象发生。 (8)在钻孔中因故停钻时,一是确保有规定水位及相应比重的泥浆,防止塌孔,二是钻头上提2m左右,以防钻渣沉淀而埋住钻头,造成质量事故。 (9)钻孔中采用轻压慢钻,使孔底不全部承受钻具重力,以避免或减少倾孔、弯孔和扩孔现象。 (10)在粉砂土控制进尺速度,加大泥浆比重至1.31.4,粘度2224秒。 (11)在粘土中控制中等转速,大泵量稀释泥浆,防止泥浆比重过大,影响成孔质量。 (12)当钻孔达到设计深度,及时停机。对孔径、孔深、孔斜率进行检查,自测合格后,报监理复测,同意后,开始清孔。 5、清孔 达到设计深度后,开始清孔,用换浆清孔法
18、。当泥浆比重为1.151.18时,再放钢筋笼。 6、下钢筋笼 (1)钢筋笼现场分节制作,长度根据定尺钢筋长度及钢筋笼长度确定。保证接头按50错开。同一根钢筋两个接头错开100cm以上。 (2)钢筋笼制好后,报监理验收合格方可使用。 制作原则是:主筋顺直,距离均匀,箍筋间距均匀,点焊牢固,保护层垫块均匀合理放置,垫块采用圆垫块。 (3)钢筋笼连接采用单面搭接焊,长度为10d,持证上岗,保证焊缝饱满,长度满足规范要求。 (4)吊放钢筋笼,确保骨架垂直缓慢下放,控制好钢筋笼顶标高,用两根钢筋固定在正确的标高位置上,保证钢筋骨架不下沉不上浮。 7、放导管 (1)导管在使用前检验好水密性试验,不合格的接
19、头不准使用。保证导管在填充水下混凝土中不漏水,不漏浆,确保桩的质量。 (2)根据孔深配制好相应的导管节数,保证安装时一次性到位。 (3)下放导管时,位置保证正确,卡口旋紧。 (4)导管底与孔底保证有30cm左右的空隙,防止导管进入沉淀中,混凝土无法涌出管外。另避免离孔底太高,使第一斗灌注混凝土无法埋住导管口或导管埋深太少,泥浆重新涌入导管内形成夹泥,影响成桩质量。 8、二次清孔 放好导管后,通过导管进行二次清孔,测定好泥浆比重为1.10左右,沉淀10cm,孔径、孔深符合设计要求时,报监理同意后,开始浇注混凝土。 9、浇注混凝土 (1)钻孔灌注桩混凝土采用C25商品混凝土,坍落度宜控制在16cm
20、22cm。 (2)浇混凝土前,隔水塞在导管一定高度内设置好,由初灌量计算确定,初灌量确定原则:当导管离孔底3040cm时,保证第一次混凝土下料使导管埋入混凝土中1m以上。 (3)斗内灌满混凝土,剪断铁丝,混凝土连续浇灌。用测绳测得导管埋深为6m,拆导管二节并保证拆导管后,导管在混凝土内埋深1m,再浇混凝土。也就是控制两点,第一,导管埋深不宜过大,控制在4-6m之间,过深导管无法拔出导致埋管形成断桩。第二,导管埋深必须保证最少有2m,防止操作中稍有失误,导管提升过高、过快,出现导管埋深过小或拔空,涌入泥浆,形成断桩、夹泥的质量事故。 (4)混凝土顶标高比设计桩顶标高出2米,确保设计桩顶以上1m内
21、混凝土质量符合设计要求。 (5)配备一定数量泥浆车,保证泥浆顺利外运。 四、质量保证措施 1、每道工序须请监理验收合格后再进行下道工序施工。 2、确保钻孔垂直,钻头带导向,孔底减压钻进。 3、开钻前预先配制好优质泥浆,用粘土或膨胀土为原料,控制比重在1.31.4之间。遇夹砂土层时,为防缩颈,把优质泥浆注入孔内。 4、确保孔底沉渣小于10cm,采用二次清孔。 5、商品混凝土严格控制坍落度及发料时间,确保混凝土连续下料。 6、防止断桩、夹泥,备足第一斗。 7、现场施工记录确保准确,每根桩均报现场监理工程师予以验收签字。 8、为防止严重塌孔现象发生,钻孔采用梅花形间隔法(对角线)施工。 9、若发生塌
22、孔、斜孔,则回填粘土至塌孔处以上12m,重新钻孔。 10、发生卡钻及落钻等现象,仔细分析原因,采取相应对策解决问题。 11、保证每根桩成孔质量检测比例达到规定要求。 12、在施工中严格按规范、标准执行,不合格坚决返工重做。 13、若下雨浇注混凝土,斗上设防雨棚,防止雨水进入混凝土内。 五、钻孔事故的预防及处理措施 1、坍孔 坍孔的表征是孔内水位突然下降,孔口冒细密的水泡,出渣量显著增加而不见进尺,钻机负荷显著增加等。 处理方法:施工中应严格按要求操作,以防为主,一旦发生坍孔,找出坍孔原因,采取相应措施。 2、钻孔偏斜 钻孔偏斜事故预防和处理方法: (1)安装钻机时要使转盘、底座水平、起重滑轮缘
23、、固定钻杆的卡孔和护筒中心三者在一条竖直线上,并经常检查校正。 (2)由于主动钻杆较长,转动时上部摆动过大。必须在钻架上增设导向架,控制钻杆上的提引水笼头,使其沿导向架钻进。 (3)钻杆、接头逐个检查,及时调正。主动钻杆弯曲,要用千斤顶及时调直。 (4)在有倾斜的软、硬地层钻进时,应吊着钻杆控制进尺,低速钻进。 (5)用测孔器查明钻孔偏斜的位置和偏斜情况后,一般可在偏斜处吊住钻头上下反复扫孔,使钻孔正直,偏斜严重时应回填砂粘土到偏斜处,待沉积密实后再继续钻进。 3、落物掉钻 预防措施: (1)开钻前应清除孔内落物,零星铁件可用电磁铁吸取,较大落物和钻具,可用打捞工具打捞,然后在护筒口加盖。 (
24、2)经常检查钻具、钻杆、钢丝绳和联结装置。 (3)为便于打捞落入孔内的钻头,可在钻头上预先焊上打捞环,或在钻头上围捆几圈钢丝绳等。 处理方法:掉钻后应及时摸清情况,若钻锥被沉淀物或坍孔土石埋住应首先清孔,使打捞工具能接触钻头。 4、糊钻 在软塑粘土层回转钻进,因进尺快,钻渣量大,出浆口堵塞而造成糊钻。预防处理办法:首先应对钻杆内径大小进行计算决定。还应控制进尺,加强泥浆循环。若已严重糊钻,应将钻锥提出孔口,清除钻头残渣。 5、扩孔和缩孔 扩孔是孔壁坍塌而造成的结果,若只孔内局部发生坍塌而扩孔,钻孔仍能达到设计深度则不必处理,只是混凝土灌注量大大增加,若因扩孔后继续坍塌影响钻进,应按坍孔事故处理
25、。 缩孔原因有二种:一种是钻头焊补不及时,严重磨耗的钻头往往钻出较设计孔径稍小的孔。另一种是由于地层中有软塑土(俗称橡皮土),遇水膨胀后使孔径缩小。可采用上下反复扫孔的方法以扩大孔径。 6、钻杆折断 折断原因: (1)用地质或水文地质钻探小孔径钻孔的钻杆来作桥梁大孔径钻孔桩用,其强度、刚度太小,容易折断。 (2)钻进中选用的转速不当,使钻杆扭转或弯曲折断。 (3)钻杆使用过久,连接处有操作或接头磨损过甚。 (4)地层坚硬,进尺太快,超负荷引起。 预防和处理: (1)选择钻杆直径和管壁厚度尺寸时,按规范要求进行计算决定。 (2)不使用弯曲严重的钻杆,要求连接处丝扣完好,以螺套连接的钻杆接头,要有
26、防止反转松脱的固锁设施。 (3)应控制进尺,遇有坚硬、复杂地层要仔细操作。 (4)经常检查钻具各部分的磨损情况,损坏要及时更换。 (5)如已发生钻杆折断事故,可按前述打捞方法将掉落钻杆打捞上来。并检查原因,换用新或大钻杆继续钻进。 7、钻孔漏浆 在透水性强或有地下水流动的地层中,稀泥浆会向孔外漏失,护筒埋设太浅,回填土不密实或护筒接缝不严密,会在护筒刃脚或接缝处漏浆,也可能由于水头过高使孔壁渗浆。 为防止漏浆,可加稠泥浆慢速转动,在有护筒防护范围内,接缝处漏浆,由潜水工用棉絮堵塞,封闭接缝。 以下网友留言只代表网友个人观点,不代表本站观点。 立即发表评论 initiative, think n
27、ew ideas, coming up with new ways. Overcoming work just passable, but not hard, earnestly fulfill their responsibilities, strengthening the sense of responsibility, stimulating desire, activate the innovation dynamic. Third is to have the courage to play. Due diligence as is inherent in the Communis
28、ts bloody and strength of character. Failing to evade, the slightest smell of the Communists, the peoples public servants are not, is people hate, hate scandal. School Party Committee will strictly control idle idle issues of governance as the starting point, control the party in a strict way. Glow
29、party cohesion, creativity and combat effectiveness as test standard of overall effectiveness of strictly administering the party, full of enthusiastic, determined the officers of party members and cadres party spirit of play. For the officers not to shame, in front of the urgent, difficult, dangero
30、us and heavy tasks, under any condition, no thought of, sense of responsibility, the courage to be responsible for four is to adhere to the purpose of unifying belief and innovation, both serve the lofty ideas, but with practice, pioneering and innovative concrete action. In serious and solid to car
31、ry out your responsibilities at the same time, continue to use their brains, trying to, and actively explore new ideas, rely on the broad masses of cadres and the masses of workers, improve the level and quality of work. Leadership education innovation Guide. On innovative teaching mode, training mo
32、de, teaching methods, educational technology, educational tools and student management, we must constantly review and improve the working experience, come up with new ideas, new programmes, to come up with new initiatives, always focus on long-term goals and the central work of educating people, con
33、stant innovation and development, and create a new situation for the work. In the rural two speaks of the education in the rural two study and education (May 2016) comrades: on May 4, the district held a two learning education Conference, for me two educational work arrangements put forward clear re
34、quirements. Based on district requirements, the two study and education activities, today, I shall tell you a party lecture, very happy to be our Baocheng village party branches, there is an opportunity to . Meanwhile, we should also see, grass-roots party organizations and party members education a
35、nd management problems. Some village Board organization weak lax, village level management capacity insufficient, on village thing village love of decision force influence even than elderly will, part rural members relax has self requirements, long-term not participate in party organised, long-term
36、not paid dues, on village Board individual people of views with into overall, put a village Board individual people of shortcomings unlimited zoom, on village two Board of work not support, not implementation, even up to reaction, caused has more serious of effect, so, must through carried out two l
37、earn a do learning education, seriously solution these problem, Promote the full strictness requirement into the grass-roots level, into every branch, every party member. 2. two education is important in strengthening ideological construction practices. XI Jinping, Secretary General stressed that ideological problems solved, and does not mean that it will never resolve. Just like the room needs to be cleaned regularly, dirt, regular cleaning of the mind. Since the partys 18, we conscientiously implement the Central Governments11
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