Pipe ditch backfilling method for water-saving irrigation project of mountainous region
A pipe ditch and engineering technology, applied in the field of water-saving irrigation and water conservancy projects, can solve problems such as troublesome construction, high cost, and long construction period, and achieve the effects of convenient construction, convenient procurement, and short construction period
Inactive Publication Date: 2016-10-12
四川捷佳润灌溉科技有限公司
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Problems solved by technology
[0003] The mountainous soil layer is shallow, there are many underground stones, large stones, and the excavated soil contains less fine soil and fine sand. If the conventional construction backfill method is adopted in the industry, fine soil or fine sand needs to be transported outside, which is costly and troublesome for construction. , long construction period
For temporary convenience, the buried pipeline project in the mountain area is directly backfilled with excavated soil, causing the water pipe to be scratched by sharp stones and falling stones, which greatly reduces the physical properties of the pipe material and buryes hidden dangers for the safe operation of the pipeline system. increase maintenance costs
Method used
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Embodiment Construction
[0009] For a citrus water-saving irrigation project in Xuyong County, Sichuan, the depth of the mountainous soil layer is shallow, and there are many underground stones. The excavation of the pipe trench is very difficult. The depth of the pipe trench is 60cm, the width is 50cm, and the length is about 500m. The bottom of the pipe trench is compacted with a hook machine, the exposed sharp stones are hammered flat, and a layer of B-type three-layer corrugated cardboard with a width of 10cm is placed on the bottom of the pipe trench. 200g / m 2 kraft paper, corrugated paper is 120g / m 2 , lining paper 120g / m 2 , the bursting strength reaches 10.6Kgf / cm 2 , When laying, put the face paper down, that is, stick the kraft paper side to the bottom of the pipe ditch. Put a DN90 PVC water supply pipe in the middle of the corrugated cardboard, and install the pipe according to the design requirements.
[0010] Then lay a layer of B-type five-layer corrugated cardboard with a width of 3...
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The invention discloses a pipe ditch backfilling method for a water-saving irrigation project of a mountainous region. The pipe ditch backfilling method for the water-saving irrigation project of the mountainous region is characterized by comprising the following steps: hammering out exposed sharp-pointed stones at the bottom of a pipe ditch by using a hammer, and then paving a single-flute corrugated board; after mounting a water pipe on the corrugated board, paving a double-flute corrugated board on the pipe; and finally backfilling the pipe ditch with excavation soil and compacting. The pipe ditch backfilling method has the advantages of convenience in construction, low cost, good protection effect to the pipe and the like, and is a practical method for pipe ditch backfilling of the water-saving irrigation project of the mountainous region.
Description
technical field [0001] The invention belongs to the field of water-saving irrigation hydraulic engineering, and in particular relates to a method for preventing damage to water pipes in the process of backfilling pipe trenches. Background technique [0002] my country's agricultural water consumption is huge, accounting for about 70% of the total water use, while the proportion of agricultural water use in developed countries is about 50%. However, with the advancement of irrigation technology, the proportion of agricultural water use in my country has gradually decreased. Water and fertilizer integration technology is a method of directly transporting water and nutrients needed for crop growth to the soil near the roots of crops through the pipeline system and the irrigator installed on the final pipeline. Water and fertilizer integration technology can increase the water utilization rate to over 95%, and the fertilizer utilization rate to 30-50%. PVC water pipe has low de...
Claims
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IPC IPC(8): E02D17/12
CPCE02D17/12
Inventor 王禄涛温标堂
Owner 四川捷佳润灌溉科技有限公司