土体分层沉降的安装方法：l、用φ108钻头钻孔，为了使管子顺利地放到底

Installation method of layered settlement of soil: <br>1. Drill holes with φ108 drill bit. In order to put the pipe smoothly to the end, it is generally deeper than the installation depth. Its principle is 10 meters + 0.5 meters, 20 meters + 1 meter, And so on. <br>2. After clearing the hole, do not lift the drill immediately after the drill bit reaches the predetermined position (preset value). You need to pour clean water into the clean water of the pump connector until the mud water becomes clear mixed water, then lift the drill and install it. <br>3. An external joint is used for the connection of the installation pipe, and clean water is injected into the pipe while the pipe is down (when the buoyancy of the pipe is too large). <br>4. For the installation of the magnetic ring, put the magnetic ring and the positioning ring on each section of the tube according to the design requirements, and fix the positioning ring with screws, and then insert the tube into the outer joint, tighten the screws, so that the edge is lowered to the design depth until. <br>5. If the separation distance of the magnetic ring is not positive 2 meters, it can be achieved by adjusting the length of the tube, or it can be solved by using a positioning ring on the tube, but a principle must be mastered: the magnetic ring must have sufficient settlement downward The distance must meet its design requirements. <br>6. After the settling pipe is placed to the depth required by the design, it can be backfilled by closing the lid. The backfill raw material is dry fine soil or medium coarse sand on site, the backfill speed must not be too fast, so as not to block the backfill after plugging, thus forming voids, it is best to check again after an interval of one or two days, after the filler sinks Just fill it up, and add protective measures around the tube before you can rest assured to measure later.

How to install soil layering settlement:<br>l, with the drill bit drilling, in order to make the tube smoothly put to the end, generally need to be deeper than the installation depth, its principle is 10 meters plus 0.5 meters, 20 meters, and l meters, and so on.<br>2, clear hole, drill drill to a predetermined position (preset value), do not immediately lift the drill, need to pump the piece of water down to fill the water, until the mud water into clear water, and then after the drill installation.<br>3, the installation of the pipe connection using an outer connector, one side down the pipe while injecting water into the pipe (when the pipe buoyancy is too large).<br>4, the installation of magnetic rings, according to the design requirements of each tube on the magnetic ring and positioning ring, and screw fixed positioning ring, and then insert the tube into the outer connector, tighten the screw, so that the edge down to the design depth.<br>5, if the interval distance of the magnetic ring is not positive 2 meters, can take the adjustment of the length of the tube to achieve, can also be used on the tube set positioning ring method solution, but to master a principle: the magnetic ring down to have enough settling distance, must meet its design requirements.<br>6, the subsidence tube into the depth required by the design, cover can be backfilled. Backfilling raw materials for the site dry fine soil or medium coarse sand, backfilling speed must not be too fast, so as not to clog back fillers do not go, thus forming a gap, preferably after a day or two to check, fillers sink and then fill can be, the tube around plus protective measures, can rest assured to be measured after.

Installation method of layered settlement of soil:<br>l. Drilling with φ 108 drill bit, in order to make the pipe smoothly put to the bottom, it generally needs to be deeper than the installation depth, its principle is 10m + 0.5m, 20m + 1m, and so on.<br>2、 Clean the hole. Do not lift the drill immediately after the drill reaches the preset position (preset value). Pour clear water into the clean water of the pump connector until the mud water becomes clear mixed water. Then lift the drill and install it.<br>3. The external joint is used for the connection of the installation pipe, and clear water is injected into the pipe while the pipe is running (when the buoyancy of the pipe is too large).<br>4. For the installation of the magnetic ring, the magnetic ring and locating ring shall be sleeved on each pipe according to the design requirements, and the locating ring shall be fixed with screws, and then the pipe shall be inserted into the outer joint, and the screws shall be tightened, so that the joint side can be lowered to the design depth.<br>5. If the distance between the magnetic rings is not positive 2 meters, it can be realized by adjusting the length of the pipe, or by using the positioning ring on the pipe. However, a principle should be mastered: there should be enough settlement distance for the magnetic ring downward, which must meet the design requirements.<br>6. After the settlement pipe is placed to the depth required by the design, it can be backfilled after the cover is covered. The raw material for backfilling is dry fine soil or medium coarse sand on site. The backfilling speed must not be too fast, so as not to block the backfill and form a gap. It's better to check it after a day or two. After the filler sinks and fills again, protective measures can be added around the pipe to ensure the measurement.<br>