【正文】 The steel arch truss shall be assembled according to surrounding rock categories and actual situation on construction site, with ponents to be connected with bolts or welded on the site. When installed, the steel arch truss shall be close to the rock surface and welded closely with the rock bolt.鋼拱架的立柱不得置于虛碴和活動(dòng)石塊上；在軟弱圍巖地段，立柱底面要加設(shè)墊板或墊梁。When the rock bolt construction is undertaken, the grouting personnel shall pay more attention to the personal safety, such as wearing gloves, mouth mask, glasses and so on.When the rock bolt construction is undertaken, the mechanical pipeline and the joint shall be checked and cleaned before the the grouting starts and after the grouting finishes. The grouting can formally starts only after the check and the trial run, so as to prevent the extreme vibrations and the pipeline blockage. When the blockage of the grouting pipeline or the joint happens, the removal and the repair shall be undertaken after the pressure has been released. When the rock bolt is grouted, the pressure shall be not extreme. Once the pressure is too high, the air suppy shall be stopped immediately, and the blockage shall be removed. The nozzle of the grouting pipe shall be not placed opposite to people, so as to prevent the highpressure shotcreting from hurting people.鋼拱架構(gòu)件采用螺栓連接或現(xiàn)場(chǎng)焊接，在施工現(xiàn)場(chǎng)根據(jù)圍巖類別及實(shí)際情況選用組裝。錨桿施工時(shí)，注漿作業(yè)開始前和結(jié)束后，應(yīng)認(rèn)真檢查、清洗機(jī)械管路及接頭，檢查后應(yīng)經(jīng)過試運(yùn)轉(zhuǎn)方可開始正式作業(yè)，以防止發(fā)生劇烈振動(dòng)、管路堵塞現(xiàn)象；當(dāng)發(fā)生注漿管路或接頭堵塞時(shí)，需在消除壓力之后，再進(jìn)行拆卸和維修。When it is constructed on the muck, it shall avoid treading on the active rock mass. When it is constructed on the ladder, it shall have the necessary protection device and under the supervision by some personnel specially.3. 由于巖石條件差，在清理以后鉆錨桿孔以前，為降低鉆孔期間巖石從頂拱脫落而下打鉆工人的危險(xiǎn)，在頂拱中安裝一層噴漿支護(hù)是重要的（至少35mm）。施工期間，要對(duì)支護(hù)的工作狀態(tài)進(jìn)行定期和不定期的檢查；在不良地質(zhì)地段，要指派專人每班檢查，當(dāng)發(fā)現(xiàn)支護(hù)變形或損壞時(shí)，要立即修整加固。The transporting route shall be maintained and repaired specially. The muck and the residual materials on two sides along the transportation line shall be removed timely. 六、支護(hù)施工：Support Construction1. 為保持洞內(nèi)圍巖的穩(wěn)定，隧洞的支護(hù)必須及時(shí)跟進(jìn)洞挖施工，并與洞挖施工穿插平行作業(yè)。機(jī)動(dòng)車司機(jī)不得擅離工作崗位，離開時(shí)要切斷電源，擰緊車閘，開亮車燈；非值班司機(jī)不得駕駛機(jī)動(dòng)車。When the muck loading equipments are operated, the excavation cross section clearance shall be enough so as to meet the requirement of safety rotation for the muck loading equipments, nobody can pass through the rotation area. If when it is blocked by the rock, it is prohibited to move the rock by hand, and any part of the body can not touch the conveyor belt.3. 洞內(nèi)采取有軌運(yùn)輸時(shí)，；進(jìn)出隧道的人員應(yīng)走人行道，不得與機(jī)械或車輛搶道，嚴(yán)禁扒車，追車或搭車。Before and after the muck is loaded, the stability of the cross section wall rock shall be checked. Once the loose rock or such landslide possibility is found, it shall be reported to the higher authority and handled carefully, and then the muck loading can continue.2. 裝碴機(jī)械在操作中，要保證開挖斷面凈空能滿足裝碴機(jī)械的安全運(yùn)轉(zhuǎn)，其回轉(zhuǎn)范圍內(nèi)嚴(yán)禁人員通過；若遇巖塊卡堵，嚴(yán)禁用手直接搬動(dòng)巖塊，身體的任何部位，不得接觸機(jī)械的傳送帶。 after which, the safety personnel shall check the prying quality. Only after the safety personnel confirms that the prying is qualified, do the mucking can start. After the mucking finishes, the second prying can start, during which, the first two work faces shall be checked and pried off first, and then the new work face shall be pried off. After the second prying finishes, the safety personnel shall check the prying quality, if satisfied, the next work can start, or the prying shall repeat from the first.3. 周檢查:每周末，有項(xiàng)目部安全員與撬挖工一起對(duì)洞內(nèi)所有洞段進(jìn)行一次檢查、撬挖，并做好撬挖記錄。The dangerous rock shall be pried by workers with experience and technology.When the loose rock and the cracked shotcrete is being removed from the excavation surface, the construction personnel are forbidden to stand below the loose rock and the cracked shotcrete.2. 日常撬挖：當(dāng)爆破結(jié)束后，空氣的質(zhì)量已達(dá)到健康標(biāo)準(zhǔn)時(shí)，開始第一次撬挖；撬挖結(jié)束后，由項(xiàng)目部的安全員檢查撬挖質(zhì)量，安全員認(rèn)為撬挖合格后，方可進(jìn)入出渣作業(yè)；出渣結(jié)束后進(jìn)行第二次撬挖；在做第二次撬挖時(shí)，首先把前兩次的工作面檢查、撬挖一遍，再撬挖新工作面；在第二次撬挖結(jié)束后，安全員將檢查撬挖質(zhì)量，如安全員同意，將進(jìn)行下一步工作，否則撬挖工作重做。It is prohibited to drill holes in the dead holes.四、安全處理Safety Treatment1. 由有經(jīng)驗(yàn)和技術(shù)的工人來進(jìn)行危石的撬除。一旦發(fā)現(xiàn)隱患處理后，方可進(jìn)行下一工序施工。 the shifts and has not been handled。洞內(nèi)爆破作業(yè)時(shí)必須統(tǒng)一指揮；所有人員必須撤離，撤離的安全距離不小于200m。電起爆時(shí)主導(dǎo)線宜懸空架設(shè)，據(jù)各種導(dǎo)電體的間距必須大于1米。The personnel for blasting and processing blasting equipments are forbidden to wear the fiber clothes. Smoking and lighting fires are strictly forbidden when the explosives are loaded. In order to prevent the electricity cutoff, the blaster shall carry the torch with himself.Before loading explosives, the support near the blasting face shall be checked whether it is secure or not. The ground and stone dust shall be cleaned. Because the temperature of the justdrilled hole is too high, it is forbidden to load the explosives immediately. 裝炮時(shí)應(yīng)使用木質(zhì)炮棍裝藥，嚴(yán)禁火種；無關(guān)人員與機(jī)具等均應(yīng)撤至安全地點(diǎn)。裝藥時(shí)嚴(yán)禁煙火和采用明火照明，為防止點(diǎn)炮時(shí)發(fā)生照明中斷，爆破工應(yīng)隨身攜帶手電筒。 the drill rod is straight, damaged or not, and the water supply is normal or not. The unqualified shall be repaired or changed. During the construction, the support shall be placed steadily。Before drilling holes, check the safety of the work environment. The work can start only after the pumice in the tobeexcavated surface and the misfire are removed.Before the hand drill is adopted to drill, it shall check whether the body, screw, socket, spring and support are in good conditions or not。作業(yè)時(shí)，必須將支架安置穩(wěn)妥；風(fēng)鉆卡鉆時(shí)，應(yīng)用板鉗松動(dòng)拔出，不可敲打，未關(guān)風(fēng)前不得拆除鉆桿。The tunnel excavation shall be strictly plied with the blasting design organization. The trial blasting shall be performed before carrying out the blasting design organization, and timely amend the parameters in accordance with geological conditions.The front rock type forecast shall be conducted for excavation based on the geological conditions and precast showed from the previously excavated cross section, so as to confirm the excavated cross section size and the previous support type. When the geological conditions are poor, the advance exploration hole construction shall be carried out so as to know the front geology and unde