当前混凝土检查井型式
Current concrete manhole type
(a) 特点是：使用马蹄形收口圈；上下井室组合；下井室独立底板；下井室上开置圆孔与管道连接。
(a) it is characterized by: use of horseshoe shaped closing ring; combination of upper and lower chambers; independent bottom plate of lower chamber; connection of circular hole and pipeline on upper part of lower chamber.
(b) 特点是：不使用收口圈；上下井室组合；井室上独立顶板；井室下独立底板；下井室上开置圆孔与管道连接。
(b) it is characterized by: no closing ring; combination of upper and lower chambers; independent top plate on the chamber; independent bottom plate under the chamber; circular hole on the lower chamber connected with pipeline.
(c) 特点是：圆锥形收口圈，矩形井室，上下井室组合，各开半孔，各带顶板和底板。
(c) it is characterized by a cone-shaped closing ring, a rectangular well chamber, a combination of upper and lower well chambers, each with a half hole, each with a top plate and a bottom plate.
(d) 矩形井室；不使用收口圈；上井室带顶板；下井室独立底板；下井室开置U形孔与管道连接。
(d) rectangular well chamber; no closing ring is used; upper well chamber has top plate; lower well chamber has independent bottom plate; lower well chamber is connected with pipeline through U-shaped hole.
(e) 特点是：上下井室组合，井室上都开置圆孔与管道连接、独立顶板与底板。另外有：单一井室；带底板的井室；带柔性连接的开孔井室等。
(E) it is characterized by the combination of upper and lower chambers, on which circular holes are set to connect with pipelines, and independent top and bottom plates. In addition, there are: single well chamber; well chamber with bottom plate; open well chamber with flexible connection, etc.