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The method of constructing reservoirs avoiding caves in limestone areas and the reservoir structures constructed therein

A limestone and reservoir technology, applied in construction, hydraulic engineering, sea area engineering, etc., can solve problems such as difficult blockage, large quantity, and construction of reservoirs, and achieve the effects of avoiding search and blockage, increasing economic value, and difficult cultivation

Active Publication Date: 2017-12-12
李德群
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to years of accumulation, the bottom of the ditch is covered with soil at least 10 meters thick, and the entrance of the cave is buried under the soil and is not easy to find
Moreover, the condition of the karst caves at the bottom of the ditch is complicated, with the characteristics of large number, high density, and difficulty in plugging.
Therefore, limestone areas are usually forbidden areas for building reservoirs. At present, there is no practical method for building reservoirs based on limestone bases, and the water shortage problem in this area cannot be effectively solved.

Method used

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  • The method of constructing reservoirs avoiding caves in limestone areas and the reservoir structures constructed therein
  • The method of constructing reservoirs avoiding caves in limestone areas and the reservoir structures constructed therein

Examples

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Effect test

Embodiment 1

[0035] Such as figure 1 and figure 2 As shown, the present embodiment includes limestone gully landform, and this landform includes the ditch bottom 2 with the thickness of the soil layer 3 exceeding 5 meters and the slopes 1 on both sides of the ditch bottom 2. The specific construction steps are as follows:

[0036] Step 1, flat foundation, excavate a horizontal flat base 4 in one of the slopes 1 , and the flat base 4 is flush with the top surface of the ditch bottom 2 . In this embodiment, it is preferred that the slope 1 of the excavated flat base surface 4 is gentler than the other slope 1 . Moreover, the flat base surface 4 is excavated in a stepped shape during excavation, so that at least one step 6 higher than the flat base surface 4 is formed on the slope portion 1 of the excavated flat base surface 4 . The horizontal step surface of the step 6 is 5-10 meters wide, and a green belt 7 is set on the side of the horizontal step surface of the step 6 close to the foun...

Embodiment 2

[0044]Such as figure 2 As shown, this embodiment includes a limestone gully landform, which includes a ditch bottom 2 with a soil layer 3 thicker than 5 meters and slopes 1 on both sides of the ditch bottom 2 . A horizontal flat base surface 4 is provided at the lower part of one of the slope portions 1 , and the slope portion 1 on which the flat base surface 4 is provided is gentler than the slope shape of the other slope portion 1 . The flat base surface 4 is flush with the top surface of the ditch bottom 2, and a downwardly recessed reservoir foundation pit 5 is provided on the flat base surface 4, and the inner wall of the reservoir foundation pit 5 is covered with a sealing layer 9. When the reservoir foundation pit 5 spans a plurality of limestone layers, and there is a water gap in the inner wall of the reservoir foundation pit 5 (the water gap is the soil layer between the limestone layers), the sealing layer 9 is 20-40 cm thick concrete layer, the preferred concrete...

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Abstract

The invention discloses a method for constructing a reservoir away from karst caves in limestone areas and a constructed reservoir structure. A horizontal foundation surface flush with a gully top is formed on the slope on one side of a gully bottom of a limestone gully and is provided with a reservoir foundation pit concaved downwards, karst cave openings inside the reservoir foundation pit and in the rainwater collecting area are inspected after a reservoir wall and a reservoir bottom of the reservoir foundation pit are leveled, inspected unqualified karst cave openings are sealed, 1-5 karst cave openings close to the reservoir foundation pit in the gully bottom are not blocked, and finally an inner wall of the reservoir foundation pit is sealed. According to the method for constructing the reservoir away from the karst caves in the limestone areas and the constructed reservoir structure, practical schemes are provided for storing water through the reservoir in the limestone areas, the conception is ingenious, implementation is easy, the investment is small and the economic value is high.

Description

technical field [0001] The invention relates to a method for building a reservoir avoiding karst caves in a limestone area and the constructed reservoir structure, which is mainly used for building a reservoir on a limestone base for water storage. Background technique [0002] At present, reservoirs mainly refer to artificial lakes formed by building barrages at the narrow mouths of ravines or rivers. After the reservoir is completed, it can play the roles of flood control, water storage for irrigation, water supply, power generation, and fish farming. For water-scarce areas, building reservoirs to store water is the most direct and effective solution for farmland irrigation. However, for limestone areas, due to the long-term erosion of groundwater, the insoluble calcium carbonate in the limestone reacts with water and carbon dioxide to transform into slightly soluble calcium bicarbonate, forming caves underground in the long run. [0003] In the limestone area, there are...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B3/00
CPCE02B3/00
Inventor 李德群
Owner 李德群
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