【正文】 ，直接掌握質量動態(tài)，指導全面質量管理工作，展開嚴格崗位責任制，對各工序、工種實行檢查監(jiān)督管理，行使質量否決權。Company39。s engineering department directly supervise and control the quality of the project and to gain direct control over the quality of dynamic guidance of total quality management , expand the strict system of personal responsibility to implement the inspection and supervision of the management of various processes , type of work , the exercise of the quality of the veto（2）對主要工序設置管理點，嚴格按工序質量控制體系和工序控制點要求進行運轉。Setting management points to major process and we should be in strict accordance with the requirements of the process quality control system and process control point operation（3）實行三級質量驗收制度；每道工序組100%自檢；質量100%檢驗；工地技術負責30%抽查。The implementation of the three tier system of quality inspection 。 each process group 100% selftest 。 quality 100% inspection 。 site technology is responsible for 30% of spot checks（4）認真填寫施工日記。Fill in construction Diary .2．技術措施Technical measures（1）樁軸線及樁位放樣，定位后要進行復測，定位精度誤差不超過5mm。埋設護筒時由測量人員到場，用儀器校正中心后方能固定護筒，保證護筒的垂直度。Loft pile axis and piles bit , to retest after positioning , the positioning accuracy error of should not more than 5 mm . when bury the casings,the surveyor should at the scene, we should fix the casings with the center of instrument calibration, to ensure the verticality of the casings （2）鉆機定位，旋挖鉆機桅桿必須垂直，不合要求隨時糾正。Rig positioning , rotary drilling rig mast must be vertical,if not,we should correct at any time.（3）孔底沉渣檢測小于30cmThe hole bottom sediment detect is less than 30cm（4）確保鋼筋籠的垂直度Ensure the verticality of the reinforcement cage（5）砼攪拌時砂石料經過磅稱稱重，誤差不超過3%，嚴格控制水灰比。根據現(xiàn)場砂石料的含水率情況調整加水量。每根樁做12次坍落度試驗。Aggregate concrete mixing after weighing scales, weighing error should less than 3% , and we should be strict control of the watercement ratio . Adjust the amount of water according to the site aggregate moisture content and each pile we should have 12 slump test （6）根據地層特點及時調整泥漿性能，防止鉆孔擴徑、縮徑和坍塌，控制好砂層土的泥漿相對密度，確?？妆诜€(wěn)定。Timely adjustment mud performance according to the formation characteristics in order to prevent drilling flaring , necking and collapse , and good control of the sand layer soil slurry relative density to ensure the stability of the hole wall四、 施工總體計劃 Construction master plan（一）施工總體計劃 Construction master plan本工程施工合同約定： 180 天。根據工期要求。樁基設計及場地等條件，計劃進旋挖鉆機一臺及其配套設備。The construction contract : 180 days. According to the schedule requirements . Pile foundation design and site conditions , we plan to purchase a rotary drilling rig and its ancillary equipment 施工中采用隔樁跳打（保證相鄰樁距大于4倍樁徑），鉆孔、砼澆筑分開作業(yè)的方式進行施工。同時根據生產進程及時優(yōu)化，提高施工效率。We take the skip drilling during construction ( to ensure adjacent pile spacing is greater than four times the pile diameter ) , drilling,concrete pouring operations separately for construction . Simultaneously we optimized according to the production process in a timely manner to improve the efficiency of construction （二）施工進度計劃 Construction schedule根據以往施工經驗及網絡優(yōu)化成果，施工φ750工程樁用時情況分析如下：According to the construction experience and network optimization based on past achievement ,Constructiing the φ750 project pile time use,refer to the following analysis:鉆機移位、就位及開鉆準備；The rig shift , in place and prepare drilling 鉆進成孔；Drilling into a hole吊放鋼筋籠、導管；Dipping reinforcement cage and catheter 。水下砼澆筑；Underwater concrete pouring根據以上分析，一臺旋挖轉機每天（8h）可成孔 2 個，砼澆筑成樁 2 個。 Based on the above analysis , a rotary rig work every day (8h) can dig 2 holes and two concrete pouring into piles八 主要設備，工具配置 Major equipment , configuration tools根據土層特點，樁徑以及樁長情況，選用8R30旋挖轉機，制漿設備，泥漿泵。Based on soil characteristics , pile diameter and pile length ,we choose 8R30 rotary drilling rig , pulping equipment , mud pump主要設備工具表如下Main equipment tools table as following 序號serial number 名稱Name 型號Model 數(shù)量Quantity 價值（萬元）Value 備注Note 1旋挖鉆機 Rotary drilling rig 12泥漿泵 Mud pump 23制漿機 Pulper 14砼攪拌機 Concrete mixer 15液壓汽車吊Hydraulic truck crane26翻斗車 Dumpers 57電焊機 Welding machine 38挖掘機 Excavator 19裝載機Loaders 110排污泵Sewage pump211泥漿比重計Mud hydrometer212水準儀Level113全站儀 Total station 114鉆斗Drilling bucket115導管 Catheter/ conduit 116導管操作平臺117上料斗 Hopper118發(fā)電機組 Generator sets 219清水泵Clean Water Pump220砼試模等 Concrete tryout12