目录
When laying irrigation pipes, they are often buried underground. Burying the pipes not only prevents them from being exposed to harsh sunlight or cracking due to freezing but also facilitates surface farming activities, maximizing the lifespan of the pipes.
所以, how deep should irrigation pipes be buried? 实际上, this depends on various factors such as climate, 地形, 土壤类型, pipe type, 还有更多. This post will provide you with a detailed answer.
Climate
The climate varies in different places, so the burial depth of irrigation pipes also differs.
Taking China as an example, the eastern and southern regions have relatively mild temperatures, and there is rarely a frozen soil layer in winter; temperatures seldom fall below zero degrees Celsius. 所以, when laying irrigation pipes, there is generally no need to consider frost protection. The burial depth of irrigation pipes should be greater than 40 centimeters (about 16 英寸), which can protect the pipes while not interfering with surface farming operations.
If the farmland is large and large agricultural machinery (such as seeders, harvesters, ETC。) is frequently used, then burying the pipes at a depth of 50–60 centimeters (about 20–24 inches) is also entirely sufficient. 然而, it is necessary to evaluate the soil’s bearing capacity; sometimes, to prevent ground collapse caused by heavy machinery, foundation reinforcement is needed.
In the northeastern region of China, winters are very cold, with average temperatures sometimes falling below minus 15 degrees Celsius. If the pipes are buried too shallowly, they may be at risk of freezing and cracking. 所以, the burial depth of pipes needs to be below the frost line, generally reaching 150 centimeters (about 59 英寸) or more.
地形
Different terrains require different burial depths for irrigation pipes. 例如, in flat plains, the terrain is level, so generally the supply pipes can be buried at a depth of 40–50 centimeters (about 16–20 inches). 然而, in mountainous areas where the terrain is rugged and complex, the pipe laying depth needs to be evaluated comprehensively based on the terrain, installation difficulty, cost, and other factors.
Soil Types
Common soil types in agriculture include loam and sandy soil. The burial depth of irrigation pipes varies between these two soil types.
Taking drip tape as an example: it generally needs to be shallowly buried. In loam soil, which has good water retention, nutrient retention, and aeration, drip tape is usually buried shallowly at a depth of 2–4 centimeters (about 0.8–1.6 inches).
If the soil is sandy or contains a high sand content, the drip tape needs to be buried slightly deeper, generally at 3–5 centimeters (about 1.2–2.0 inches).
此外, it is worth mentioning that sometimes in fields using drip tape irrigation, mulch film is applied. 在这种情况下, with the protection of the film, the drip tape only needs to be buried very shallowly, at a depth of 1–2 centimeters (about 0.4–0.8 inches).
Pipe Types
Irrigation pipes are usually divided into main pipes and branch pipes. The main pipes are typically made of PVC or PE. Their material is relatively rigid and their size is larger; depending on the region and terrain, they are generally buried within a range of 30–100 centimeters (about 12–39 inches).
In drip irrigation systems, the branch pipes are often driplines or drip tapes. These can be laid directly on the soil surface or shallowly buried just a few centimeters underground. Because driplines and drip tapes have emitters, when buried underground they need to avoid clogging and thus should not be buried too deep.
In sprinkler systems, engineers can flexibly determine the burial depth according to actual needs. 例如, with pop up sprinklers, the sprinkler heads are retractable and need to remain flush with the ground surface. Workers can calculate the required burial depth based on this characteristic.
此外, for sprinklers with risers, engineers need to select the burial depth based on the desired spraying effect (such as lift height and radius) as well as the actual climate and terrain. 一般来说, a burial depth between 30 centimeters (about 12 英寸) 和 100 centimeters (about 39 英寸) is suitable.
By reading this article, you should already understand that the burial depth of irrigation pipes is influenced by many factors. 实际上, there is often no fixed answer. You can assess the depth based on your actual situation, considering factors such as climate, 地形, pipe type, 土壤类型, 等等.
然而, it is also important to note that the deeper the pipe is buried, the better is not always true. Greater depth not only makes maintenance and replacement more difficult but also increases costs significantly. When you actually lay the pipes, just take all these factors into account and find a balance.
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作者: 迈克尔
编辑: 迈克尔
内容审阅者: 迈克尔
