Shajing is the name of a building technical term. The manhole is set up for the maintenance and installation of urban underground infrastructure such as power supply, water supply, drainage, sewage discharge, communication, cable TV, gas pipeline and street lamp line. Generally, it is located at pipeline intersections, bends, pipe diameters or slope changes, and one is set at regular intervals on straight pipe sections to facilitate regular inspection of ancillary structures.
Basic definition of inspection well:
Manhole is a well-shaped structure used to build communities (residential areas, public buildings, factory areas, etc.). ), the outer diameter of buried plastic drainage pipes is not more than 800mm, and the buried depth is not more than 6 m, which is generally located at the intersection of drainage pipes, bends, changes in pipe diameter or slope, falling into water, etc. In order to facilitate regular inspection, cleaning and dredging, or inspection of underground operations, plastic injection molding or brick is adopted.
The plastic integrated injection inspection well refers to the design that the main body of the inspection well, Jing Zuo, is formed by one-time injection molding, the bearing port adopts a 360-degree annular bearing platform, the shaft and the bottom of the Jing Zuo adopt mesh reinforcing ribs, and each socket adopts annular reinforcing ribs. According to the number and angle of nozzles, there are starting Jing Zuo, through Jing Zuo, 45-degree elbow Jing Zuo, three-way left static and four-way Jing Zuo. In order to adapt to various drainage conditions, plastic inspection wells are equipped with plastic integral injection fittings such as variable diameter joints, confluence joints and shaft multi-joints. Ensure the smooth and tight drainage system.
Scope of application of inspection wells:
1) Design, construction and maintenance of plastic drainage inspection wells with an outer diameter of less than 1200mm and a buried depth of less than 8m in residential areas (residential areas, public buildings, factories, etc.). ), urban and rural municipal, industrial parks and the transformation of the old city.
2) Construction of plastic drainage manhole under the conditions of general soil, soft soil, seasonal frozen soil and collapsible loess;
3) The seismic fortification crack is 9 degrees and below.
4) general lane ground load 15t (rear wheel pressure 5t); The ground load of fire lane is designed according to the gross vehicle weight of 30t (rear wheel pressure of 6t).
5) The designed groundwater level shall not be higher than1.0m below the ground;
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