地下連續(xù)墻施工質(zhì)量技術(shù)交底.doc

沖樁班防止偏孔質(zhì)量技術(shù)交底內(nèi)容:
    根據(jù)造成偏孔的原因，在施工過程中采取以下防止措施：
    1、根據(jù)甲方所提供的地質(zhì)資料和相鄰的槽孔的地質(zhì)情況，及時(shí)予知進(jìn)入巖層的深度、夾層情況以及巖面的坡度，以便采取相應(yīng)的措施；
    2、保證樁架擺放準(zhǔn)確，使錘心正對槽段中心線；加固樁架，減少?zèng)_錘過程中樁架的晃動(dòng)；
    3、沖錘的直徑控制在80-82CM之內(nèi)，經(jīng)常檢查錘牙的磨損程度，及時(shí)修補(bǔ)或更換；
    4、沖孔過程中，提錘的高度控制2.5M之內(nèi)，沖錘撞擊巖面時(shí)，保證鋼絲繩仍受拉力，以保持沖錘的豎直；
    5、及時(shí)換漿，保持一定的泥漿濃度，防止粘錘；
    6、沖孔至巖土分解面時(shí)，低錘密擊，直至進(jìn)入巖層內(nèi)部；
     7、加強(qiáng)觀察，發(fā)現(xiàn)偏孔及時(shí)采取措施予以糾正。
Stone Pile class quality of technical disclosure to prevent the partial hole content:
    According to the reasons causing partial hole in the construction process to take the following preventive measures:
    1, according to the geological information provided by Party A and the adjacent slot of the geological conditions, in a timely manner to know the depth into the rock, mezzanine as well as the slope of rock surface in order to take appropriate measures;
    2 post rack placed to ensure accurate to hammer heart is the center line of the trough section; reinforcement pile frame, reduce the hammer during the rock pile holder;
    3, hammer of the diameter of control within the 80-82CM, regular checks of hammer teeth wear, timely repair or replacement;
    4, punching process, provide a high degree of control 2.5M hammer within the hammer hit rock face, the guarantee still pull rope to keep the hammer in the vertical;
    5, in time for slurry, the slurry to maintain a certain concentration, to prevent sticking hammer;
    6, punching to the decomposition of surface rock, the low-density blow hammer until the rock into the interior;
     7, to enhance observation, found that partial hole to take timely measures to correct.
 

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