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. You need to pour the pump down into the clear water until the mud water becomes clear mixed water, then lift the drill and install it. <br>3. The connection of the installation pipe adopts an external joint, injecting clean water into the pipe while dropping the pipe (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 stop. <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 tube is placed to the design requirements, it can be backfilled by closing the lid. The backfill material is dry fine soil or medium coarse sand on site. The backfill speed must not be too fast to avoid backfilling after clogging, thereby forming voids. It is best to check again after an interval of one or two days, and then fill after the filler sinks After full, it is necessary to add protective measures around the tube, so that 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 the predetermined position, do not immediately carry the drill, need to pump the sword 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 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 stop.<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 design requirements, 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 wait for the measurement.

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. For hole cleaning, do not lift the drill immediately after the drill bit has reached the predetermined position. Fill the clean water in the clean water of connecting the pump to the sword until the mud water becomes clear mixed water, and 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 when the pipe is lowered (when the pipe has too much buoyancy).<br>4. For the installation of the magnetic ring, the magnetic ring and the locating ring shall be sleeved on each pipe according to the design requirements, and the locating ring shall be fixed with screws, then the pipe shall be inserted into the outer joint, and the screws shall be tightened, so that the joint can be put down 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 to fall down, which must meet the design requirements.<br>6. After the settlement pipe is placed in the design requirements, the cover can be covered for backfilling. 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, so as to form a gap. It's better to check it after a day or two. After the filler sinks, it can be filled again. After the protective measures are added around the pipe, it can be safely measured later.<br>