井架搭拆工程安全作業(yè)交底.doc

內(nèi)容摘要：
1、 井架搭設(shè)高度和起重量必須按設(shè)計(jì)規(guī)定要求，嚴(yán)禁超負(fù)荷使用。
2、 井架的底座必須安置在堅(jiān)硬地基上，埋深不得少于1m；井架基礎(chǔ)土層承載力，應(yīng)不小于8KPa，并澆筑C20混凝土，厚度300mm、基礎(chǔ)表面平整偏差不大于10mm。
3、 高度為10-15m的井架應(yīng)設(shè)纜風(fēng)一組（4-8根）；每增高10m加設(shè)一組。纜風(fēng)繩上端要用吊耳和卸甲連接，并用3只以上鋼絲繩夾頭緊固。
4、 井架采用附墻者應(yīng)用剛性支撐與建筑物牢固連接，連接點(diǎn)必須經(jīng)過計(jì)算，井架附墻桿不得附著在腳手架上，附墻桿材質(zhì)應(yīng)與井架的材質(zhì)相同。
5、 井架搭至10m高度必須設(shè)臨時(shí)纜風(fēng)，待固定纜風(fēng)或附墻支撐設(shè)置后，方可拆除。纜風(fēng)繩與地面夾角應(yīng)為45-60度，與地錨或樁頭必須牢固連接。地錨、樁頭要安全可靠，樁頭后須有拖樁。如使用木樁，木樁直徑不得小于15cm,埋深不少于1.5m。禁止將纜風(fēng)繩栓在樹木、電桿上。
6、 高度在30m以上的井架，其纜風(fēng)繩上的花蘭螺絲，必須加以保險(xiǎn)。穿越馬路時(shí)，要采取可靠的安全措施。
7、 纜風(fēng)繩不準(zhǔn)在高壓線上方通過，與高壓架空線必須保持規(guī)定的安全距離。
8、 井架的立柱應(yīng)垂直穩(wěn)定，其垂直偏差應(yīng)不超過高度的千分之一，接頭應(yīng)相互錯(cuò)開，同一平面上的接頭不應(yīng)超過2個(gè)。井架導(dǎo)向滑輪與卷揚(yáng)機(jī)繩筒的距離，帶槽卷筒應(yīng)大于卷筒長度的15倍，無槽光筒應(yīng)大于卷筒長度的20倍。
9、 井架運(yùn)輸通道寬度不小于1m，擱置點(diǎn)必須牢靠，通道兩邊必須裝設(shè)防護(hù)欄桿，并裝有安全門或安全柵欄。
10、 井架吊籃必須裝有防墜裝置和定型化的停靠裝置，沖頂限位器和安全門；吊籃提升應(yīng)使用雙根鋼絲繩；吊籃兩側(cè)裝有安全擋板或網(wǎng)片，高度不得低于1m，防止手推車等物件滑落；吊籃的焊接必須符合規(guī)范。
11、 井架底層周圍及通道口，必須裝設(shè)隔離防護(hù)柵，井架高度超過30m，須搭設(shè)雙層安全棚；如無法設(shè)置隔離棚，則井架四周必須掛安全網(wǎng)，安全網(wǎng)應(yīng)三面包滿。
井架必須裝設(shè)可靠的避雷和接地裝置；卷揚(yáng)機(jī)應(yīng)單獨(dú)接地并
Abstract:
1, derrick erection height and weight must be in accordance with design requirements from the requirements of non-overload.
2, derrick base must be placed in the hard ground, the depth of not less than 1m; derrick foundation soil bearing capacity, should be not less than 8KPa, and pouring concrete C20, thickness 300mm, based on surface roughness deviation is less than 10mm.
3, height 10-15m of the mast should be located a group of cable wind (4-8 root); each additional set of 10m higher. Use top ropes hanging ears and Resurrection of the connection, and with three or more wire rope fastening chuck.
4, Derrick applications using rigid support attached to wall, and building a strong connection, the connection point must be calculated, derrick shall not be attached to the wall lever attached to the scaffold, with a wall rod material should be the same material with the derrick.
5, Derrick must take to 10m high temporary wind cable, cable to be fixed or attached to the wall brace the wind, before demolition. Angle between wind and ground cable wire should be 45-60 degrees, with anchors or trailer coupling must be firmly connected. Anchor, pile head to safe and reliable, there must be delayed after the pile head of pile. If using wooden blocks, wooden blocks shall not be less than the diameter of 15cm, depth of not less than 1.5m. Prohibition of ropes tied trees, utility poles on.
6, height 30m above the derrick, the cable ropes of flower blue screw the wind, must be insured. Across the road, to take effective safety measures.
7, ropes are not allowed in the high-voltage lines through the top, high-voltage overhead line with the requirement to maintain a safe distance.
8, Derrick's column should be vertical stability, its high degree of vertical deviation should not exceed one-thousandth, joints should be staggered with each other, the same plane joints should not be more than 2. Derrick Pulley and hoist rope drum of the distance, grooved drum roll length should be more than 15 times, no slot-ray tube should be 20 times greater than the drum length.
9, Derrick transport channel width is not less than 1m, hold points must be reliable, access to the installation of guard rails on both sides, and equipped with safety gates or security fence.
10, Derrick basket must be equipped with anti-fall device and setting of the stopping device, and the security gate-hoisting limiter; basket should be used to enhance two-root rope; basket on both sides with safety shield or mesh, height low at 1m, trolleys and other objects to prevent the slide; basket of welding must conform to specifications.
11, Derrick, and openings around the bottom, to the installation of protective isolation gate, derrick height of more than 30m, erection of double security to be shed; If you can not set the isolation shed, you must be hanging around derrick safety net, safety nets should be at least three bread.
Derrick to install and reliable lightning protection and grounding; hoist shall be a separate ground and

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