深基坑施工專項(xiàng)應(yīng)急處置預(yù)案(評(píng)審修改)-wenkub
2023-05-02 05:53:09 本頁(yè)面
【正文】 ...............................................................................12 應(yīng)急處置基本原則 .............................................................................................23 組織機(jī)構(gòu)及職責(zé) .................................................................................................3 應(yīng)急組織體系 ....................................................................................................................3 指揮機(jī)構(gòu)及職責(zé) ................................................................................................................3 組長(zhǎng)主要職能及職責(zé) .................................................................................................3 副組長(zhǎng)主要職能及職責(zé) .............................................................................................4 應(yīng)急小組下設(shè)機(jī)構(gòu)及職責(zé) .........................................................................................54 預(yù)防與預(yù)警 .........................................................................................................7 危險(xiǎn)源監(jiān)控 ........................................................................................................................7 預(yù)警行動(dòng) ............................................................................................................................8 預(yù)警條件 .....................................................................................................................8 預(yù)警方法 .....................................................................................................................9 防控措施 .....................................................................................................................95 信息報(bào)告程序 ...................................................................................................10 信息報(bào)告 ......................................................................................................................10 信息上報(bào) ......................................................................................................................10 信息傳遞 ......................................................................................................................106 應(yīng)急處置 ...........................................................................................................12 響應(yīng)分級(jí) ..........................................................................................................................12 響應(yīng)程序 ..........................................................................................................................12 處置措施 ..........................................................................................................................13 基底隆起、承壓水突涌應(yīng)急處置措施 ...................................................................13 圍護(hù)滲透破壞應(yīng)急處置措施 ...................................................................................13 圍護(hù)體系破壞應(yīng)急處置措施 ...................................................................................15 周邊環(huán)境破壞應(yīng)急處置措施 ...................................................................................16 應(yīng)急結(jié)束條件與程序 ......................................................................................................17 應(yīng)急終止條件 ...........................................................................................................17 應(yīng)急終止程序 ...........................................................................................................187 應(yīng)急物資與裝備保障 .......................................................................................19. . . .. . 學(xué)習(xí)好幫手1 事故類型和危險(xiǎn)程度分析天津地鐵 5 號(hào)線 16 合同段直沽站車站主體基坑長(zhǎng) ，標(biāo)準(zhǔn)段基坑寬，深 ，盾構(gòu)井段基坑寬 ，深 ，開挖范圍內(nèi)地層土性主要為粘性土、粉質(zhì)土及砂土，坑底下臥土層為⑨2 粉砂層及⑩1 粉質(zhì)粘土層。蓋挖施工過程中，由于基坑垂直運(yùn)輸通道限制較大（頂板預(yù)留孔洞較少，且開孔尺寸較?。?，一旦發(fā)生深基坑事故，搶險(xiǎn)難度較大，需加強(qiáng)垂直運(yùn)輸通道的日常維護(hù)工作，包括起重設(shè)備、臨邊圍護(hù)、混凝土固定泵管等，基坑外圍地面根據(jù)地墻分幅預(yù)先引孔并標(biāo)識(shí)用于坑外應(yīng)急注漿。在砂層、粉砂層、砂質(zhì)粉土或其他透水性較好的夾層中，止水帷幕或圍護(hù)地墻因開裂、空洞、接縫處理不當(dāng)?shù)?，將發(fā)生滲漏，致使大量的地下水涌入基坑，如夾帶沙粒將導(dǎo)致坑外產(chǎn)生水土流失，影響坑內(nèi)外土壓平衡，導(dǎo)致基坑圍護(hù)體系發(fā)生嚴(yán)重變形、引起坑外土體沉降及變形，最終達(dá)到無(wú)法控制的程度，引發(fā)各類事故?？焖夙憫?yīng)，果斷處置基
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