Anti-freeze anti-seepage water diversion treatment method of collapsible loess water-conveyance canal

Abstract

The invention discloses an anti-freeze anti-seepage water diversion treatment method of a collapsible loess water-conveyance canal, and the anti-freeze anti-seepage water diversion treatment method comprises the following steps of: forming an anti-seepage layer positioned on the lower part of the canal at the bottom of the canal and side slopes positioned at both sides of the canal; filling coarse-grained soil anti-freeze layer on the anti-seepage layer; arranging vertical water diversion sand drains at intervals along the longitudinal subsection of the channel under the anti-seepage layer positioned at the bottom of the canal, or paving horizontal water collecting pipes in the coarse-grained soil anti-freeze layer positioned on the anti-seepage layer positioned at the bottom of the canal, wherein the horizontal water collecting pipes are provided with horizontal water discharge pipes or / and longitudinal water diversion pipes by being communicated outside the canal to discharge leakage water collected on the coarse-grained soil anti-freeze layer out of a loess yuan or to the bottom of the canal in a guiding way; paving an upper geomembrane cloth or a modified asphalt anti-seepage plate on the coarse-grained soil anti-freeze layer; and pouring a concrete panel on the upper geomembrane cloth or the modified asphalt anti-seepage plate. The anti-freeze anti-seepage water diversion treatment method of the collapsible loess water-conveyance canal, which is disclosed by the invention, does not destroy the original texture of soil, is also suitable for the deep collapsible loess layer and is lower in cost and simple in construction.

Description

Technical field [0001] The invention belongs to the technical field of water and soil treatment, and specifically relates to a freezing-resistant, seepage-proof and water-conducting treatment method for a collapsible loess water conveyance channel. Background technique [0002] The treatment methods of collapsible loess foundation generally include prepreg, replacement, compaction, compaction, silicification, etc. [0003] The presoaking method is generally suitable for self-weight collapsible loess with a collapsibility depth greater than 10m. After soaking, the collapsibility of the 6m soil layer below the ground can be eliminated. The soil layer above 6m should also assist other treatment measures. However, the prepreg method has large water consumption and long treatment time, while the prepreg method has a large water consumption (treatment of 1m 2 The area needs at least 5t of water), and the long construction period (under normal circumstances, it takes at least one year for...

AI Technical Summary

Problems solved by technology

However, it is not suitable to adopt the silicification method to strengthen the foundation soil that has been infiltrated with petroleum products, gums and oils, and the pH value of the groundwater is greater than 9, and this method needs to consume industrial raw materials such as sodium silicate or calcium chloride, and the cost is relatively high.

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