当灌注声测管时间已久，孔内首批混凝土已初凝，导管内又堵塞有混凝土，此时应将导管拔出，重新安设钻机，利用较小钻头将钢筋笼以内的混凝土钻挖吸出，用冲抓锥将钢筋骨架一一拔出。然后以粘土掺砂砾填塞井孔，待沉实后重新钻孔成桩。

　　我们再分析机械发生故障或其它原因使混凝土在导管内停留时间过久，或灌注时间持续过长，最初灌注的混凝土已经初凝，增大了导管内混凝土着落的阻力，混凝土堵在管内。其预防声测管卡管的方法是灌注前应仔细检验灌注机械，并预备备用机械，发生故障时立刻调换备用机械；同时采取措施，加速混凝土灌注速度，必要时，可在首批混凝土中掺入缓凝剂，以延缓混凝土的初凝时间。

　　那怎么处理呢？可用长杆冲捣管内混凝土，用吊绳抖动导管，或在声测管的导管上安装附着式振捣器等使隔水栓着落。如仍不能着落时，则须将导管连同其内的混凝土提出钻孔，进行清理修整（留意切勿使导管内的混凝土落入井孔），然后重新吊装导管，重新灌注。一旦有混凝土拌和物落入井孔，须将散落在孔底的拌和物粒料等予以清除。提管时应留意到导管上重下轻，要采取措施防止翻倒伤人。

　　声测管卡管主要有以下两种情况：初灌时隔水栓卡管；混凝土本身的原因，如坍落渡过小、活动性差、夹有大卵石、拌和不平均，以及运输途中产生离析、导管接缝处漏水、雨天运送混凝土未加遮盖等，使混凝土中的水泥浆被冲走，粗集料集中而造成导管堵塞。

Acoustic detecting pipe card has the following two conditions: the early after plug card water pipe; The reason of the concrete itself, for example through small, illiquid, with uneven cobblestone, mixing, segregation, catheter seams slack and transit transport, rainy days without concrete covering, etc., made the cement in concrete were washed away, coarse aggregate concentration caused by catheter jam.
How to deal with it? Available long pole dao tube concrete and use rope jitter catheter, or installed on the sound tube catheter attached type vibrator, etc make the waterproof switch. If still cannot fall, should be the catheter along with its concrete drill, clean dressing (note that do not make concrete falling into a hole) in the ducts, and lifting pipe, again to perfusion. Once a concrete mixing plant matter falling into a hole, scattering in the bottom of the hole to remove mixing aggregate content, etc. On the lift tube should be noticed when the catheter under the weight is light, to take measures to prevent the overturned cuts.
We will analyze mechanical failure or other reasons make the concrete in intraductal stay time is too long, or infusion duration is too long, the initial perfusion has initial setting of concrete, increasing the whereabouts of intraductal concrete resistance, concrete block in the pipe. The acoustic detection pipe stuck prevention method is to carefully before filling the overhaul perfusion machine, and prepare to spare machinery, fails to immediately change the standby machinery; At the same time take measures to accelerate the speed of concrete, when necessary, can be in the first batch of concrete mixed with retarder, to delay the initial setting time of concrete.
When the acoustic detection tube perfusion time is long, hole has the first concrete initial setting, intraductal blocked again with concrete, the catheter should be pulled out, to make the rig, using a smaller bit sucked out concrete drilled within the reinforcing cage, with a blunt cone pull out steel skeleton one by one. And then mixed with clay gravel filling the hole, after being heavy fact to drilling pile.