1. 声测管在绑缚于桩基的钢筋笼上面时，就应先将声测管的一头一尾用薄钢板焊接密封，以免异物

落入管中堵塞声测管；

　　2.钢质声测管在进行联结时，一般采用焊接或丝口联结，焊接时应注意不要破坏钢管，以免出现洞口

导致混凝土浇注时水泥浆体的渗入而堵塞声测管；丝口联结时则应在丝口处紧缠麻丝，其目的也是防止水

泥浆体的渗入；
　　
　 3. 声测管一般宜采用钢质管，而PVC管虽然价格便宜，但由于绑扎、水泥水化热等因素的影响而易于

变形，最后导致探头的上下运动无法进行检测，故一般不应采用；

　 4.在桩基检测前一天，再将声测管端头的薄钢板取掉，施工方可先用测绳进行声测管检查，检查项目

1. The sound tube tied in the pile foundation of reinforcing cage, it should be the first to the end of the tube a tail with sheet steel welded sealed, avoid foreign bodies
Fell into the tube plug sound tube;
2. The sound of steel tube in the coupling, generally adopts welded or threaded connection, don't damage should be paid attention to when welding steel pipe, lest appear the mouth of the cave
The result of the concrete pouring water slurry infiltration and acoustic detection tube plugging; Threaded connection is should mouth tightly wrapped in silk linen yarn, its purpose is to prevent water
Slurry infiltration;
Acoustic detection tube (3) general appropriate USES steel pipe, and PVC pipe although cheap, but as a result of banding, cement hydration heat and the influence of such factors as easily
Deformation, which eventually led to the up and down movement of the probe can't test, so it should not be commonly use;
4. The day before pile foundation inspection, then acoustic detecting tube end of thin steel plate removed, construction Fang Kexian acoustic detection tube with a measuring line inspection, check the project