As we all know, double-wall corrugated pipe before construction related materials need to be ready, and make security-related work on the fence embankment slope protection against stones and other objects falling wounding. Construction principles of double-wall corrugated pipe following Xiaobian to introduce you to what specific. 1, double-wall corrugated drainage pipe trench construction works to be the same, but it should be consistent with the general drainage trough laying the design, construction of the relevant provisions. 2, double-wall corrugated pipe should be laid straight, need to use a line laying flexible interface, double-wall corrugated pipe each bearing interface relative angle generally no larger than 1.5 °. 3, double-wall corrugated pipe depth below the base of the building (structure) building foundation underside thereof, double-wall corrugated pipe shall be laid in the building (structure) building materials base under foundation diffusion angle within the compression zone. 4, double-wall corrugated pipe crossing the railway, high-grade road embankment and impaired structures should be set to protect the casing reinforced concrete, steel, cast iron and other materials produced. Casing diameter should be larger than the outer diameter of 200mm above the bellows, the end of the space between the double-wall corrugated pipe and casing with a filler filling. 5, the water table is higher than the elevation of the bottom region trench excavation, construction should take steps down at the end of the water table to prevent trench instability. Groundwater level should be reduced to the lowest point below the bottom 0.3m ~ 0.5m wall corrugated pipe installation can be carried out. Backfill the entire process, not stopping to reduce groundwater. 6, the width of the trench bottom net, should press the tube diameter plus 06m ~ 1Om OK, so artificial in the bottom work appropriate. 7, trench excavation, base height should be strictly controlled, not disturbing the base surface. Base design elevation 0.2m ~ 0.3m above the undisturbed soil should be retained, prohibit the disturbance. Before laying pipe with manual cleaning to the design elevation, not to dig below the design elevation. If the local over-excavation or disturbance occurs, not backfill soil, fill interchangeable 10mm ~ 15mm natural gradation of sand and gravel or coarse sand and leveling compacted. 8, when the artificial slotted upper trough should be mixed soil, the lower groove of good quality soil piled separately. To backfill with. Bulldozers shall not affect the stability of the trench. 9, the rainy season, should be possible to shorten the length of the slot, so that a trough fast, backfilling quick and good anti-foam tank measures. Once the bubble tank occurs, the water should be removed, the soil softened by the removal of the bubble, for filling sand and gravel or coarse sand, good foundation treatment. In addition. In the double-wall corrugated pipe in the construction process, we usually uses a segmented construction method, namely the original arch culvert in advance angle side by side with two substrates, while the length is given based on long culvert. Which can be used in slide specifications have not generally ready to pipe diameter is 0.5m - 2.5m, each section of pipe length of about 3 meters. Connect the inner (outer) flange bolts, assembled pipe diameter is 3M to 8M, each circumferential direction 4-15 plates, lap board and the board of high strength bolts approach. This article Source: www.shandonghaochen.com