A manhole sited at a junction or bend in a drain to allow clearance of blockages.
检查井（位于排水沟连接或转弯处，用于清除阻塞）
Example sentencesExamples
Second, an inspection chamber can be used as a point of access to remove blockages from a sewer system.
If the inspection chamber is clear, the blockage is on the private side and the owner is responsible for clearing.
As you can see the properties have different numbers of inspection chambers and gullies.
In the past year Yorkshire Water has put poison bait in more than 34, 200 inspection chambers in the sewage system - twice as many as in the previous year.
More often than not, owners of bungalow houses tend to think that the inspection chambers are septic tanks.