SU1465476A1 - Method of constructing a canal - Google Patents

Abstract

The invention relates to the field of hydraulic engineering construction. The purpose of the invention is to increase the efficiency of construction by reducing the duration of the start-up period by reducing the influence of saline groundwater on the salinity of the transported water. In the implementation of the method the route of the channel is divided into dry areas 3.4 and wet construction areas 5. In dry areas 3.4, the level of salty groundwater 2 is lower, and in wet areas 5 it is lower than the bottom of the channel. During construction along the canal road, temporary jumpers 8.9 are installed at the boundaries of the wet section 5. Ground waters fill part of the channel in the wet section 5 and are located in this section. After preparing the channel for start-up, the channel is first filled with fresh water in the dry area 3, simultaneously removing the jumper 8. After ensuring the transit flow through the sections 3 and 5 and filling the channel reservoir with fresh water, the jumper 9 is removed, ensuring the flow through dry area 4 I Il. about $ (L

Description

groundwater to the salinity of the transported water,

The drawing shows the canal route, a longitudinal section.

The drawing shows the bottom of the channel 1, Fowen 2 groundwater, dry uchagki channel 3 and 4, wet areas | channel 5, the surface of the earth 6, the design level 7 of water in the channel during its operation, jumpers 8 and 9 in the channel of the canal part, the volume of 10 saline groundwater IB channel channel in the wet area The method is as follows

in a way.

 The canal route is divided into dry 3.4 and wet 5 construction sites so that in dry sections 3 and 4 level 2 saline groundwater is lower and on wet {5) above the bottom of the channel. After the channel route was divided into sections, the channel was constructed separately along separate sections. During construction, salt groundwater from the wet section 5 is prevented from flowing to the dry areas 3 and 4 for which, for example, temporary bridges 8 and 9 are installed at the boundaries of the wet section 5 o Groundwater is filled in part of the channel on the wet section 15

Formula

the invention

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A method for building a canal, including selecting a canal route, planning the canal, developing a canal bed, profiling the canal slopes and other surfaces, and restoring the vegetation layer, characterized in that, in order to improve the construction efficiency by reducing the duration of the start-up period by reducing the influence of salty groundwater the salt content of the transported water, additionally, when choosing a canal route, breaks it into dry and wet areas, while breaking it up so that in dry areas the level of salt Groundwater is located below, and in the wet above the canal bottom, the channel bed development is carried out separately in dry and wet areas with isolation of saline groundwater flowing from wet to dry areas by constructing temporary bridges at the boundaries of the –sites, and during start-up Channel reservoirs of the sections are sequentially filled, starting from the upper section, and the lower jumper of the section is removed after filling of the channel capacity of this section.

Claims (1)

Claim A method of constructing a canal, including selecting a canal route, planning a route, developing a canal bed, profiling the slopes of the canal and other surfaces, and restoring the plant layer, characterized in that, in order to increase the cost-effectiveness of construction by reducing the duration of the start-up period by reducing the influence of salt groundwater on the salinity of the transported water, in addition, when choosing the channel route, break it into dry and wet areas, while breaking so that in dry areas the salt level groundwater table is located lower, and on wet above the bottom of the canal, the canal bed is developed separately for dry and wet areas with isolation of the zones of flow of saline groundwater from wet to dry areas by constructing temporary bridges at the boundaries of the sections, and when starting up, channel channels are filled sequentially sections, starting from the upper section, and the lower jumper of the section is removed after filling the channel capacity of this section.