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Construction method of artificial ice dam for raising water level of cold-region wet land earth's surface in spring

A construction method and artificial ice technology, which can be used in filling, construction, water conservancy projects, etc., can solve problems such as high cost, damage to the ecological environment, and complex construction, and achieve the effects of convenient material selection, increased flooding time, and obvious effects.

Inactive Publication Date: 2015-04-22
NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of high cost, complicated construction and damage to the ecological environment of the existing methods for raising water levels in wetlands in cold regions, the present invention further proposes a construction method for artificial ice dams that raise surface water levels in wetlands in cold regions in spring

Method used

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  • Construction method of artificial ice dam for raising water level of cold-region wet land earth's surface in spring
  • Construction method of artificial ice dam for raising water level of cold-region wet land earth's surface in spring
  • Construction method of artificial ice dam for raising water level of cold-region wet land earth's surface in spring

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specific Embodiment approach 1

[0014] Specific implementation mode one: combine Figure 1 to Figure 3 Illustrate, the construction method of a kind of artificial ice dam that raises the spring surface water level of wetland in cold region described in this embodiment comprises the following steps:

[0015] Step 1: Build the dam foundation: The construction location of the dam foundation is selected in the narrow part of the waterway. In the dry season, the humus topsoil on the selected dam foundation part is removed first, and the cohesive soil layer 1 is backfilled and stepped on. The height of the cohesive soil layer 1 is the coldest When the accumulated water at the dam foundation is frozen at the bottom, it is the best. The length of the cohesive soil layer 1 is the same as the width of the channel, and the width of the cohesive soil layer 1 is 1 / 4 to 3 / 4 of the length of the cohesive soil layer 1. The width at the bottom of the soil layer 1 is 2 to 3 times the width at the top;

[0016] Step 2: Piling...

specific Embodiment approach 2

[0021] Specific implementation mode two: combination Figure 1 to Figure 3 Note that in step 1 of this embodiment, for waterways that dry up in early winter, the height of the cohesive soil layer 1 is 0.2m greater than the average ground height of nearby waterways. Other method steps are the same as those in the first embodiment.

specific Embodiment approach 3

[0022] Specific implementation mode three: combination Figure 1 to Figure 3 Note that in the first step of this embodiment, for waterways with accumulated water in early winter, the height of the cohesive soil layer 1 is greater than the multi-year average ice thickness of the local lake. Other method steps are the same as those in the first embodiment.

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Abstract

The invention relates to the field of wet land ecological restoration, in particular to a construction method of an artificial ice dam for raising the water level of a cold-region wet land earth's surface in spring. The construction method aims at solving the problem that an existing cold-region wet land water level rise and waterflooding time prolonging method is high in cost and complicated in construction and causes ecological environment destroying. The construction method of the artificial ice dam for raising the water level of the cold-region wet land earth's surface in spring comprises the steps of 1 dam foundation building, 2 piling, 3 dam body casting and 4 protection layer laying. The construction method is mainly used for raising the cold-region earth's surface accumulated water level rise and prolonging waterflooding time.

Description

technical field [0001] The invention relates to the field of wetland ecological restoration, in particular to a construction method of an artificial ice dam for raising the surface water level of wetlands in cold regions in spring. Background technique [0002] The reduction of the surface water level of natural wetlands and the shortening of flooding time are the main reasons for wetland degradation; human activities such as canal systems, embankments, road construction, and excessive exploitation of groundwater have caused groundwater levels to drop, and climate warming has caused temperature rise, precipitation reduction, and evapotranspiration increase in wetlands, leading to degradation of wetlands due to water scarcity. Lower water levels and shorter flooding times are the main causes of wetland degradation. [0003] Spring is the time for wetland plants to germinate, waterfowl and fish to spawn and reproduce, and has strict requirements on water level and flooding ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B5/08E02D17/18
CPCE02B3/106
Inventor 阎百兴王莉霞欧洋崔凤理孟宪坤
Owner NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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