Plastic drainage belt 2019 field construction work
2019-06-01 14:41:03??
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A, the plastic drainage plate construction work
1, according to the design requirements, the use of the theodolite, ruler. Release drain plate with hard plastic belt (30 cm wide and 1 cm long), in sand layer about 20 cm, with ShiBan a tag. According to the equilateral triangle arrangement, plate spacing of 1.0 m, error must not exceed 5 cm. Clear line sequence number and hole.
2 and a set of plastic drainage plate using play to bushing, sleeve bottom set tube boots, its material can choose steel plate, steel or hard plastic, such as pattern according to experience.
3, driving machine to correct mobile positioning, install drain wear boots bolt. Driving machine operating as a member of the socket should be good control of the positioning, landing its error control within plus or minus 50 mm.
4, in the process of playing a shall, from time to time, pay attention to control the perpendicularity of the casing, the vertical deviation shall not be greater than + / - 1.5%.
5, top tube to the top of the sand cushion layer above 50 cm, cutting drain control on the top of the sand cushion layer above the exposed length of not less than 30 cm.
6, when the drain back to the belt length is more than 50 cm, must be next to the hole fill plug, until after passing to move the hole; And bring back the root of the number can take more than 5% of the total number of root; The length of the plastic drainage plate into sand cushion should not be less than 500 mm.
7, into the foundation should be for the whole board, plastic drainage plate length is insufficient to be prepared in accordance with the following methods and requirements: when the need to take long plastic drainage plate, should be to drain a membrane peeling, insert core body to lap, lap length not less than 200 mm), and the membrane filter after good, wrapping package, with fine wire rope or perforation and firm, also can use the same connection strength of large staple nail; Each "extension board" only one joint, dispersing, extension board adjacent drain without joint; Pick up usbam using total does not exceed 10% of the total number of play set root.
Unit 8, recorder, detailing each root into the depth, inclination of plastic drainage plate, back and fill plug, etc., after being inserted hole hits, is strictly prohibited to do memory record.
9, every drainage plate after inserted to meet the design requirements, switching to the construction of the band drain.
10, timely clean up after plugged up silt, and sand backfill material after plugged drain holes around.
11, each section after completion of construction, plastic drainage plate should be self-checking, after waiting for self-inspection of qualified, again by supervision engineer acceptance, inspection unqualified shall promptly carry out repair, inspection, after inspection qualified can move to the next section.
Before 12, construction level and comparison of the original design of the elevation and increase the length were determined. Need to be extended for a record of construction must be done.
13, a section after the acceptance of plastic drainage plate immediately with sand cushion layer sand material carefully when fill the driven around the plate to form a hole and buried plastic drainage plate in the sand mat layer; Filling in thicker or stones difficult location, should use vibration driving machine construction, or with a guide hole machine after opening first board.
Second, the matters needing attention of construction
1, strict protection of plastic drainage plate materials in good condition, hold the following should be mat wood planks, damp cloth, top with a plastic cover is good, in case of weathered.
2, twisted, fault is strictly prohibited, tear drainage sheet of membranes.
3, it is forbidden to sporadic short extension use of plastic drainage plate, (except the whole roll of plastic drainage plate have).
4, plastic drainage plate on interruptions and drawing process, must be firmly plugged into light, prevent vibration and impact the pile deviation and the vertical deviation.
