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Non-negative-pressure leak-blocking method for forming lake in karst depression

A technology without negative pressure and depressions, applied in water conservancy projects, sea area projects, construction, etc., can solve the problems of unblockable and wasteful sinkholes, and achieve the effect of low construction cost and low cost

Active Publication Date: 2010-02-17
黄泽普
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As the underground river changes with the groundwater level, it will generate a huge tension or suction force on the sealing place and adjacent areas, making it impossible to block the sinkhole and form a new sinkhole. Water resources flow into the underground underground along the sinkhole. River, wasted in vain

Method used

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Examples

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Embodiment 1

[0010] Embodiment 1: (as figure 1 )

[0011] A method for plugging leaks into lakes without negative pressure in karst depressions is as follows: in the dry season, in the karst depressions with numerous sinkholes 4, the position of the underground underground river 2 is detected by a geophysical detector, and the through hole 6 is vertically drilled from the surface of the bedrock 1 to connect with the underground underground river. The river 2 is connected, and concrete is cast to form an anti-seepage wall 8 to block the underground river 2, and the front decompression through hole 5 and the rear decompression through hole 7 are drilled on the bedrock 1 at the front end and rear end of the anti-seepage wall 8, and the front decompression through hole 7 is drilled. Both the decompression through hole 5 and the rear decompression through hole 7 communicate with the underground underground river 2 . On bedrock 1 is soil layer 3 .

Embodiment 2

[0012] Embodiment 2: (as figure 2 )

[0013] A method for plugging leaks into a lake without negative pressure in karst depressions is as follows: in the dry season, cast a concrete sealing seat 9 with a through hole at the bedrock opening of the sinkhole 4 that communicates with the underground river 2 in the karst depression, and the concrete sealing seat 9 and the One end of the culvert pipe 10 is connected, and the other end of the culvert pipe 10 is higher than the water level behind the lake.

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Abstract

The invention relates to a non-negative-pressure leak-blocking method for forming a lake in a karst depression, which comprises the following steps: detecting the position of an underground river in akarst depression with a plurality of slockers by a geophysical prospecting apparatus; vertically drilling through holes communicated with the underground river from the surface of the stone head; pouring concrete to form an anti-seepage wall to block the underground river; and drilling depressurizing holes in the stone heads on the front end and the back end of the anti-seepage wall. The method can also comprise the following steps: a concrete sealing base with through holes is poured in the stone head holes of the slockers at which the karst depression and the underground river are communicated; the concrete sealing base is connected with one end of a culvert pipe; and the other end of the culvert pipe is higher than the horizontal plane of the formed lake. By employing the scientific project measures, the method ensures the stability of the underground stone heads within the water area, communicates the ground surface with the underground river air or water bodies, keeps the balancebetween the stress field between the ground surface and the underground, and has the advantages of low project cost, simplicity, practicality and no potential safety hazard.

Description

technical field [0001] The invention relates to a method for forming a lake by plugging leaks without negative pressure in karst depressions. Background technique [0002] Karst depressions are a large number of ecologically fragile structural units in karst areas, especially rocky desertification areas. Its area ranges from thousands of acres to tens of acres. It is located at the terminals of creeks and rivers. It is the outlet and channel of soil erosion. It is surrounded by mountains on all sides, and the valley bottom is flat. The river water can only flow into the downstream water system through the underground underground river through limited sinkholes. This geological structure makes it impossible to drain water in time during the rainy season and floods. In the dry season, due to the huge suction of the underground river in the sinkhole, it takes away a large amount of water and soil, resulting in drought. And with the continuous development of sinkholes, undergr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B3/00E02B3/16
Inventor 黄泽普
Owner 黄泽普
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