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塑料检查井工程性能

Engineering performance of plastic inspection wells

（1）施工条件

(1) construction conditions

塑料检查井：不受任何气候、环境影响，在没有冬季的非洲地区，更适合采用，可全天施工。

Plastic inspection wells: free from any climate, environmental impact, no winter in Africa, more suitable for the use of all-day construction.

砖砌检查井：受气候影响比较大，在下雨、高温和严寒气候都不宜施工。

Brick inspection well: affected by climate is relatively large, in rainy, high temperature and cold climate is not suitable for construction.

（2）施工速度（以2人为标准）

(2) construction speed (with 2 person standard)

塑料检查井：可以完成20个/天的检查井施工。

Plastic inspection well: 20 / day inspection wells can be completed.

砖砌检查井：可以完成1座/天的检查井施工。

Brick inspection well: the construction of inspection wells for 1 seats / days can be completed.

（3）安全性

(3) safety

塑料检查井：塑料检查井的疏通方式采用专用的清通工具，安全性能好，无需下井疏通，避免作业人员沼气中毒。不下井操作，塑料检查井井筒为管材，不存在砖砌检查井砌体砌筑时下井粉刷操作工序。

Plastic inspection wells: Plastic inspection wells are dredged by special cleaning tools, good safety performance, no need to go down the well dredging, to avoid the operators of methane poisoning. No downhole operation, plastic inspection wellbore for pipe, there is no brick inspection wellbore masonry masonry downhole painting operation process.

砖砌检查井：需下井疏通，每年都有因作业人员下井疏通引起沼气中毒事故，安全性能差。

Brick inspection wells: need to be dredged under the well, every year due to the workers dredged under the well caused by methane poisoning accident, poor safety performance.

（4）材料性能和密封性

(4) material properties and tightness

塑料检查井：塑料检查井采用高分子材料，具有耐腐蚀性，连接时采用柔性承插连接，这种连接安装时采用弹性密封圈，密封性能好，能适应一定程度的沉降，具有抗沉降能力，避免渗漏，可防止污水因渗漏二次污染地下水。

Plastic inspection wells: Plastic inspection wells are made of macromolecule materials, which are corrosion-resistant. Flexible socket and socket connections are used in connection. Elastic sealing rings are used in connection and installation. This kind of connection has good sealing performance, can adapt to a certain degree of settlement, has anti-settlement ability, avoids leakage, and can prevent sewage from secondary pollution of groundwater due to leakage.

砖砌检查井：这种检查井对酸碱的耐腐蚀性较差，检查井和管道连接采用刚性连接，刚性连接抗沉降能力差，当发生沉降时易造成管道与检查井之间出现缝隙，从而造成渗漏，造成污水二次污染地下水。

Brick inspection wells: This kind of inspection wells have poor corrosion resistance to acid and alkali. The connection between inspection wells and pipelines is rigid, and the rigid connection has poor anti-settlement ability. When settlement occurs, it is easy to cause a gap between pipelines and inspection wells, which leads to leakage and secondary pollution of groundwater by sewage.

（5）排水能力和维护清通

(5) drainage capacity and maintenance clearance

塑料检查井：塑料检查井排污能力是砖砌井的2倍，可减小设计通经，由于排污能力较强，所以在维护清理时比较简单方便。

Plastic inspection wells: Plastic inspection wells sewage capacity is twice that of brick masonry wells, can reduce the design pass, due to strong sewage discharge capacity, so in the maintenance and cleaning is relatively simple and convenient.

砖砌检查井：由于砖砌井检查井采用水泥砂浆抹灰，其阻力较大，不利于排水，在维护清理时，通常要清理杂砖杂物，需不定期维护清通，清通复杂。

Brick inspection wells: because brick inspection wells are plastered with cement mortar, its resistance is large, not conducive to drainage, in the maintenance and cleaning, usually to clean up the debris, need to be regularly maintained clearance, clearance complex.

（6）需要的作业面

(6) the required surface.

塑料检查井：由于塑料检查井排管比较紧凑，在塑料检查井施工时，无需大面积开挖，占地面积小，节省开挖费用。

Plastic inspection wells: Because of the compact drainage of plastic inspection wells, in the construction of plastic inspection wells, no large area of excavation is needed, the area is small, saving the cost of excavation.

砖砌检查井：通常施工时需要大面积开挖，以方便砌筑，施工操作面大，不利于狭小空间的施工。

Brick inspection well: usually large area excavation is needed in construction to facilitate masonry, construction operation is large, is not conducive to the construction of narrow space.