【正文】 ured, set out and verified shall be numbered and marked on the slope surface with paint. The serial number shall be regarded as anchorage making evidence . 、鉆孔設(shè)備 Drilling Equipment 為提高鉆孔效率和保證鉆孔質(zhì)量，鉆孔機具采用優(yōu)博林868型錨固鉆機，潛孔沖擊成孔。鉆孔過程中對每個孔的地層變化，鉆孔狀態(tài)(鉆壓、鉆速)、地下水及一些特殊情況作好現(xiàn)場施工記錄。During drilling or blowing hole after drilling, gravel and aggregate without dust are blew out from holes if water seepage occurred in hole ,and rock powder generally is attached to hole wall. When the depth of anchor hole has met the requirements, blow the hole with highpressure air until water is blew out. b、 塌孔、卡鉆的處理b. Treatment for Hole Collapsing and Drill Sticking當(dāng)鉆孔穿越強風(fēng)化巖層或巖體破碎帶時，往往發(fā)生塌孔。occurred. Grouting for braced wall by cement mortar with of grouting pressure shall be adopted for this kind of situation. Drilling work shall be restarted after 24 hours. Mud often seep into hole along fracture rock zone during work time in rainy days. Before grouting for braced wall, mud must be cleaned by water and air(no need to remove gravel which seeped into the hole)③、孔徑、孔深③ Diameter and Depth of Hole鉆孔孔徑、孔深要求不得小于設(shè)計值（設(shè)計孔徑150mm，孔深15～20m）。鉆孔孔壁不得有沉碴及水體粘滯，必須清理干凈，在鉆孔完成后，使用高壓風(fēng)(～)將孔內(nèi)巖粉及水體全部清除出孔外。After drilling to designed depth, drilling work cannot be stopped immediately and keep drilling 12mimutes to avoid insufficient size of hole and not up to the designed hole diameter. Any dregs and water cannot be attached on hole wall and must be cleaned out of hole. After drilling, blow the rock powder and water out from hole with highpressure air (～). Except for anchorage of integrity and hard rock , the rest anchor holes cannot be washed by highpressure water. If the confined water flew from anchor hole, anchorage and grouting could be carried out after water pressure and volume reduced, and set up drainage hole in suitable place if necessary. If it is required to deal with impounded water in anchor hole, grouting closure and secondary drilling will be adopted. ⑤、錨孔檢驗⑤ Anchor Hole Test錨孔鉆孔結(jié)束后，須經(jīng)CMEC工程師檢驗合格后，方可進行下道工序。錨孔檢驗項目允許偏差符合規(guī)范要求。遇到障礙物或異常情況應(yīng)及時停鉆，待情況清楚后再鉆孔或采取相應(yīng)措施。鋼絞線沿錨桿體軸線方向每隔2m設(shè)置一道架線環(huán)，保證錨桿體保護層厚度不小于2cm。to ensure the protective layer thickness of anchor body is not less than 2cm. Manpower shall be adopted for anchor body installation. It shall be checked seriously for anchor hole serial number before use highpressure air to blow the hole after confirmed. Slowly put the anchor body into hole,use steel tape to measure the steel strand length outside the hole and calculate the inside hole anchor length(deviation controlled within 50mm) to ensure the anchorage length. 首先按照設(shè)計要求長度切割鋼絞線，用冷彎機將無粘結(jié)鋼絞線彎曲成U型并固定在承載體上，然后按設(shè)計荷載體間距組裝完成整個錨桿體。鋼絞線不得相互纏繞并保證承載體位于孔的中部，錨桿保護層厚度不小于20mm。(5) The allowable deviation of anchor assembly shall coincide with the Chinese standard. After pleting the assembly, anchor hole shall be numbered corresponding to anchorage and stored in clarification on a dedicated place with anticorrosion protection as moisture proofing and rain proofing.、錨固注漿 Grouting本工程錨桿注漿采用二次壓力施工工藝。即第一次注漿材料和注漿壓力與一般地層相同，第二次注漿為高壓劈裂注漿，待第一次注漿4～5h后，采用M25純水泥砂漿對錨固段進行劈裂注漿，～。 Normally, the actual consumption of grouting is more than theoretical volume. The grouting is pleted as the exhaust vent stops vent and the excessive grout is over flow from the exhaust vent mouth. If insufficient grouting or sedimentation after grouting, supplementary grouting shall be needed till the totally full of the grouting. To clean the grouting pipes, grouting guns, sleeves and make accurate, plete, clear grouting records after pleting grouting.、錨桿腰梁的施工 Construction of Intermediate Beam of Anchor腰梁采用C30混凝土現(xiàn)場整體澆注，OVM15錨具與其同時安裝澆筑固定。 Before casting, it is requested to fix the bearing plate of the anchor pad to the steel bars of intermediate beam according to the design requirement. The axial line of anchorage device shall be in the same direction of the anchoring holes. Then to conduct the site casting, vibrating to guarantee the quality.、腰梁允許偏差和檢驗方法符合中國規(guī)范要求 The allowable deviation and testing methods of intermediate beams shall be coincide with the relevant Chinese standards. 、腰梁澆筑完成后，必須加強灑水養(yǎng)護工作，確保腰梁質(zhì)量。然后用水泥凈漿注滿錨墊板及錨頭各部分空隙，最后對錨頭采用不低于C30的混凝土進行封錨，防止銹蝕。 The installation of the anchorage device shall be closely attached and centering with the bearing plate and jack. The jack axial line, the anchoring holes, the anchoring rods shall be in one line. No bend or deviation to the anchor heads is allowed to make sure the load is even and coaxial. Strength the load by applying a 25cm25cm2cm steel bearing plate.、在錨桿張。 Before tension, inspection must be done to ensure the bearing face of the anchor angle bracket pedestal must be smooth and even, vertical to the axial line of anchoring rods. If not, relevant rectifying works shall be done.、張拉施工前必須對張拉機具和儀器儀表進行標(biāo)定和調(diào)試校準(zhǔn)。在設(shè)計張拉完成后，適時進行一次補償張拉，然后加以鎖定?；炷翝沧ⅲ绕湓阱^孔周圍，鋼筋較密集，必須仔細(xì)振搗，保證質(zhì)量。如一次注不滿或注漿后產(chǎn)生沉降，要補充注漿，直至注滿為止。第二次注漿再次向錨固區(qū)高壓注漿，~，注漿壓力為2～，. M25 grout of cement is used as anchor grouting material. Firstly grout from the hole bottom outwards to the anchorage section with the cementsand ratio of 1:, watercement ratio of , grouting pressure of . Secondly grout with high pressure to the anchorage section with neat cement grout of watercement ratio of , grouting pressure of , and the termination grouting pressure shall not less than .、當(dāng)孔口出現(xiàn)溢漿且持續(xù)時間不低于5min后(或排氣管停止排氣),方可停止注漿，注漿完畢后待砂漿凝固收縮后，空口進行補漿。索體采用人工下錨，緩慢從孔口送入。First, according to the design length requirements to cut steel strand, bondfree steel strand shall be bent into Ushape by a cold bending machine and fixed on the barrier,and then assembled by the design of the load to plete the entire anchor body. Note that the steel strand should not be entangled with each other and ensure that the carrier is located in the middle of the borehole.（1） 、截取鋼絞線用切割機，嚴(yán)禁使用電氣焊；(1) Use cutting machine to get steel is prohibited to use the electrical welding.（2） 、鋼絞線編制在工作平臺上進行，其下料長度為：設(shè)計長度+錨梁厚度+張拉千斤頂長度+錨具厚度+張拉操作預(yù)留量。Prestressed anchor is made up of inter