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在近年的旋挖机使用过程中,施工过程中采å–äº†è¡Œä¹‹æœ‰æ•ˆçš„æŽªæ–½ï¼Œç»æµŽæ•ˆç›Šå’Œç¤¾ä¼šæ•ˆç›Šè¾ƒä¸ºå¯è§‚,但也出现了个别问题。比如:å¡é’»æ˜¯æ—‹æŒ–钻机施工中易出现的ã€å±å®³è¾ƒå¤§çš„事故之一。所谓å¡é’»ï¼Œæ˜¯æŒ‡æ—‹æŒ–钻机在钻进或æå‡è¿‡ç¨‹ä¸­ï¼Œç”±äºŽéžé’»æœºæœ¬èº«çš„原因,å³é’»æœºçš„å„系统工作正常时,出现正åè½¬åŠ¨ä½œå‡æ— æ³•进行ã€ä¸”䏻巿‰¬æ— æ³•å°†é’»æ†æèµ·ï¼Œç„¶åŽåå¤é‡å¤ä»¥ä¸ŠåŠ¨ä½œï¼Œä¹Ÿæ— æ³•æ¢å¤æ­£å¸¸å·¥ä½œçš„æƒ…况。本文针对旋挖钻机在施工过程中易å‘生的ã€å±å®³è¾ƒå¤§çš„事故å¡é’»çš„原因作一些分æžï¼Œå¹¶æå‡ºç›¸åº”对策,与åŒè¡Œä»¬å…±åŒæŽ¢è®¨ã€?br /> 一:å¡é’»çš„原因<br /> æ ¹æ®è¿‘几年一些å¡é’»äº‹æ•…的调查分æžï¼Œåˆæ­¥è®¤ä¸ºå¡é’»çš„主è¦åŽŸå› æœ‰ä»¥ä¸‹å‡ æ–¹é¢ï¼?br /> 1.在钻进和æå‡è¿‡ç¨‹ä¸­ï¼Œå­”å£å‘生大é¢ç§¯å¡Œæ–¹è€Œé€ æˆåŸ‹é’»ï¼Œä½¿é’»å¤´æ—¢æ— æ³•进行正å转,也无法æèµ·ã€‚è¿™ç§æƒ…况在密实度ä¸å¤ªå¤§çš„ç ‚åµå±‚或æµç ‚层较易å‘生ã€?br /> 2.由于æ“作手在钻进时æ“作有误,一次进尺太深,造æˆå­”å£ç¼©å¾„,使钻头筒å£ä¸Žå­”å£é—´çš„间隙消失而造æˆå¡é’»ã€‚æ­¤ç§æƒ…况在粘泥层或砂层å˜ä¸ºç²˜æ³¥å±‚时易为å‘生ã€?br /> 3.钻头边齿ã€ä¾§é½¿ç£¨æŸä¸¥é‡ï¼Œæˆå­”直径无法ä¿è¯å°ºå¯¸è¦æ±‚,使钻筒外å£ä¸Žå­”å£é—´æ— é—´éš™ï¼ŒåŒæ—¶é’»è¿›è¿‡æ·±è€Œé€ æˆã€?br /> 4.由于å¶å‘因素造æˆï¼šå¦‚钻进或æå‡è¿‡ç¨‹ä¸­é’¢ä¸ç»³æ–­è£‚,活动接头(万å‘èŠ?解体,或机器本身出现了一些其它故éš?如å‘动机无法工作ã€é’¢ä¸ç»³è·³å‡ºæ»‘轮槽等)使工作çªç„¶åœæ­¢ï¼Œè€Œå¤„ç†åˆä¸åŠæ—¶ï¼Œé’»å¤´åœ¨å­”底åœç•™æ—¶é—´è¿‡é•¿ï¼Œå¯¼è‡´é’»å¤´ç­’å£å››å‘¨æ²‰æ¸£å¤ªå¤šæˆ–å­”å£ç¼©å¾„ã€?br /> 二:预防å¡é’»çš„æŽªæ–?br /> 预防主è¦ä»Žä»¥ä¸‹å‡ æ–¹é¢å…¥æ‰‹ï¼?br /> 1.开钻å‰è¦å……分研究地质报告,掌æ¡åœ°å±‚æƒ…å†µï¼ŒåŒæ—¶åœ¨æ–½å·¥è¿‡ç¨‹ä¸­å¯†åˆ‡æ³¨æ„地层å˜åŒ–。对容易造æˆå¡Œå­”的地层,如砂åµå±‚ã€æµç ‚å±‚è¦æå‰åˆ¶å®šå¯¹ç­–ï¼Œå¦‚è°ƒæ•´æŠ¤å£æ¶²æ€§èƒ½ã€åŸ‹è®¾é•¿æŠ¤ç­’等,防止大é¢ç§¯å¡Œå­”现象å‘生ã€?br /> 2.æ“ä½œæ‰‹åœ¨æ·±å±‚é’»è¿›æ—¶è¦æŽ§åˆ¶è¿›å°ºï¼Œä¸è¦ä¸€æ¬¡è¿›å°ºå¤ªå¤šï¼Œå¦‚在15m以深钻进时,一次钻进深度一般ä¸è¦è¶…è¿?0cm。如在粘泥层钻进,è¦å……分考虑缩径因素;如é‡ç ‚åµçŸ³ç­‰åœ°å±‚å‘粘泥层转æ¢ï¼Œéœ€æ³¨æ„地层å˜åŒ–规律,ä¸è¦ç›²ç›®åŠ åŽ‹ï¼ŒæŽ§åˆ¶ä¸€æ¬¡è¿›å°ºé‡ã€?br /> 3.制作钻头时应注æ„钻筒尺寸,钻筒直径一般应å°äºŽæˆå­”直径6cm以上;在使用过程中,对钻头è¦åŠæ—¶ä¿®å¤ï¼Œé’»å¤´ä¾§é½¿ã€è¾¹é½¿ç£¨æŸåŽè¦åŠæ—¶æ›´æ¢æˆ–补焊,ä¿è¯æˆå­”å°ºå¯?åŒæ—¶åº”ä¿è¯é’»å¤´æŒ‚勾有效,é¿å…æ„外脱勾ã€?br /> 4.è¦æ³¨æ„é’»æœºæœ¬èº«çš„åŠæ—¶ä¿å…»å’Œç»´ä¿®ï¼Œé¿å…因钻机出现故障而造æˆé•¿æ—¶é—´åœé’»ã€?br /> 5.è°ƒæ•´å¥½æŠ¤å£æ¶²çš„密度和粘度,使孔底能在一定时间内无沉渣,以ä¿è¯è®¾å¤‡å¶ç„¶å‡ºçŽ°æ•…éšœåŽæœ‰å……分的时间排除ã€?br /> 三:å¡é’»å¤„ç†æŽªæ–½<br /> 1.分æžé€ æˆå¡é’»çš„原因,尽快测é‡å¡é’»æ·±åº¦ï¼Œåˆ†æžåœ°å±‚等因素,以便采å–相应对策ã€?br /> 2.æ ¹æ®åˆ†æžå‡ºçš„原因,采å–相应对策ã€?br /> ①由于塌孔或设备自身原因造æˆçš„å¡é’»ï¼Œæ²‰æ¸£åŽšåº¦å¤§ï¼Œè¦é¦–先清孔,然åŽå†ç”¨é’»æœºæˆ–辅助设备处ç†ã€?br /> ②由于éžå¡Œæ–¹å› ç´ é€ æˆçš„å¡é’»ï¼Œæ²‰æ¸£ä¸å¤šæ—¶ï¼Œåº”首先采å–è‡ªæ•‘æŽªæ–½ï¼Œå¦‚é€‚å½“è°ƒé«˜æ¶²åŽ‹ç³»ç»ŸåŽ‹åŠ›ï¼Œä½¿åŠ¨åŠ›å¤´æ‰­çŸ©å¢žå¤§ï¼Œå†æ­£å转转动钻æ†ï¼Œå°½é‡ä½¿é’»æ†æ´»åŠ¨ï¼Œåªè¦èƒ½æ´»åŠ¨é’»å¤´ï¼Œå³å¯æ…¢æ…¢è¾¹è½¬è¾¹æï¼Œä»Žè€Œè§£å†³é—®é¢?但此方法应充分考虑钢ä¸ç»³çš„磨æŸç¨‹åº¦ç­‰å› ç´?。å¦å¤–也å¯ä»¥é€‚åº¦èµ·å‡æ¡…æ†ï¼Œä»¥å¢žå¤§å¯¹é’»æ†çš„èµ·åŠèƒ½åŠ›(æ­¤æ–¹æ³•å¿…é¡»æœ‰æœºæ¢°ä¸“ä¸šäººå‘˜åœ¨åœºå……åˆ†è€ƒè™‘å„æ–¹é¢å› ç´ åŽå®žæ–½)。以上方法åªèƒ½åœ¨å¡é’»åˆæœŸä½¿ç”¨ã€?br /> â‘¢å¦‚æžœè‡ªæ•‘æ— æ•ˆæ—¶ï¼Œè¦æ”¹ç”¨è¾…助设备处ç†ã€‚此时è¦å…ˆæµ‹é‡æ²‰æ¸£åŽšåº¦ï¼Œå¦‚æ²‰æ¸£å¾ˆå°‘ï¼Œå¯è¿…é€Ÿé‡‡å–æŽªæ–½ï¼›å¦‚æžœæ²‰æ¸£è¿‡åŽšï¼Œè¦å…ˆè¿›è¡Œæ¸…孔,然åŽå†è¿›è¡Œå¤„ç†ã€‚其方法主è¦åŒ…æ‹¬ç›´æŽ¥èµ·åŠæ³•ã€é’»å¤´å‘¨å›´ç–é€šæ³•ã€æŠ¤å£å¼€æŒ–法ã€?br 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