加固过程中，应根据管道压力巨细、管径巨细挑选相应的加固办法，加固办法的挑选，对通风管道的寿命有决定性的影响，一般情况下，可选用以下几种办法进行加固：
During
the reinforcement process, corresponding reinforcement methods should
be selected based on the pressure and diameter of the pipeline. The
selection of reinforcement methods has a decisive impact on the service
life of the ventilation pipeline. Generally, the following methods can
be used for reinforcement:
一、加固方法
1、 Reinforcement method
(1)加强抱合的办法
(1) Methods to strengthen hugging
所用材料也是轻钢龙骨，一般用于较特别的管道加固，主要有900弯管，三通管和闷头管等。
The
material used is also light steel keel, which is generally used for
special pipeline reinforcement, mainly including 900 bend pipes, tee
pipes, and blind end pipes.
(2)拉线加固
(2) Cable reinforcement
该工艺要求选用钢色、套管等材料打开加固，正压加固要求在500 pa以下。
This
process requires the use of materials such as steel color and casing to
open and reinforce, and the positive pressure reinforcement is required
to be below 500 Pa.
(3)加强框架法
(3) Strengthening the framework method
这种加固办法可用轻钢龙骨打开法进行加固。
This reinforcement method can be achieved by using the light steel keel opening method.
通风管道加固施工中，应根据通风管道方位、实践使用情况等方面打开加固工作。此外，还能够选用防下垂加固法，这种办法主要是对特别管材进行打开加固，其间主要包含迂回管材、经变管材等，以防止通风管道在实践使用中产生位移和下垂。
In
the reinforcement construction of ventilation ducts, the reinforcement
work should be carried out based on the orientation of the ventilation
ducts, practical usage, and other aspects. In addition, anti sagging
reinforcement method can also be used, which mainly involves opening and
reinforcing special pipes, including circuitous pipes, variable pipes,
etc., to prevent displacement and sagging of ventilation pipes in
practical use.
