Combined type stand pipe and modularized installation method thereof

The invention discloses a combined type stand pipe and a modularized installation method thereof for solving the problems of difficult welding, low installation efficiency and low precision of stand pipes in tube wells in the prior art. The combined type stand pipe comprises at least two sections of prefabricated pipe groups; each section of prefabricated pipe group comprises brackets, a plurality of pipelines and a plurality of bracket fixing plates, wherein the pipelines are fixedly arranged on the brackets at intervals; the bracket fixing plates are fixedly arranged on the brackets at intervals; the pipelines are divided into a plurality of units by the bracket fixing plates; the corresponding pipelines of the adjacent fabricated pipe groups are detachably connected; each section of the prefabricated pipe group can be fixed in a tube well through the bracket fixing plates. The combined type stand pipe comprises a plurality of prefabricated pipe groups; compared with the conventional on-site manufacturing and installing technology of a single stand pipe, the industrialized prefabrication of the prefabricated pipe groups reduces the on-site welding, shortens the installation period, reduces the installation difficulty, improves the installation efficiency and precision, avoids cross influences from other construction professional and meets the demand of the environment-friendly construction.