Ash dam upstream fitting-slope seepage draining structure

A slope-adhering and upstream technology, applied in soil drainage, water conservancy projects, sea area projects, etc., can solve problems such as high bursting strength requirements, geotextile damage, and unstable drainage, so as to overcome uneven settlement and reduce engineering costs. Cost, no construction interference effect

Inactive Publication Date: 2014-06-25
中国能源建设集团辽宁电力勘测设计院有限公司
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Problems solved by technology

Traditional slope drainage structures are mostly composed of geotextiles and block stones, which have high requirements for various materials. Stones need to be hard, fresh, and seamless peeling layers, and should be weather-resistant and maintain a high level after immersion Due to the characteristics of strength, the tensile strength and bursting strength of geotextiles are high; the thickness of this k

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  • Ash dam upstream fitting-slope seepage draining structure

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Embodiment Construction

[0015] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0016] Such as figure 1 As shown, a kind of seepage drainage structure attached to the slope upstream of the ash dam, the geotextile 1 and the geomembrane 3 are thermally bonded and pasted on both sides of the geonet core 2 to make the seepage drainage structure attached to the slope; The thickness of the bottom sand protective layer laid on the slope is 100mm; the bottom sand protective layer 4 is laid with a slope drainage structure, the geomembrane 3 faces the original soil slope side upstream of the ash dam, and the geotextile 1 faces the ash side, and the seepage drainage structure is placed o...

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Abstract

The invention belongs to the field of ash dam structures and particularly relates to an ash dam upstream fitting-slope seepage draining structure of hydraulic ash dams and dry ash dams suitable for fuel coal thermal power plants. Geotechnical cloth and a geomembrane are adhered to two sides of a geonet through thermal bonding to form the fitting-slope seepage draining structure. A bottom layer sand protecting layer 100mm in thickness is laid on an ash dam upstream nature soil slide slope after the slope is finished. The fitting-slope seepage draining structure is laid on the bottom layer sand protecting layer, the geomembrane faces the ash slope upstream natural soil side slope, and the geotechnical cloth faces an ash layer. An upper layer sand protecting layer 100mm in thickness is laid on the geotechnical cloth side of the fitting-slope seepage draining structure, and slope protection rock blocks are constructed. The fitting-slope seepage draining structure has the advantages that the construction cost of the fitting-slope seepage draining structure is 35 yuan/m<2>, and construction cost is reduced by about 65%; traditional fitting-slope seepage draining structures needs to be synchronously constructed with a dam body, construction interference is large, the fitting-slope seepage draining structure can be constructed after the dam body is constructed, construction interference is avoided, and construction period is lowered effectively.

Description

technical field [0001] The invention belongs to the field of ash dam structures, and in particular relates to an ash dam upstream slope pasting seepage drainage structure applicable to hydraulic ash storage dams and dry storage ash dams of coal-fired thermal power plants. Background technique [0002] Ash dam is a hydraulic structure used by coal-fired thermal power plants to store ash and retain water in the valley ash yard, and it is mostly filled with earth, stone or ash. Drain on dam slope is a surface drainage facility laid on the upstream slope of the ash dam, which prevents gray water from entering the dam body, causes seepage damage to the dam slope soil, and protects the upstream slope of the ash dam from damage. scour. Traditional slope drainage structures are mostly composed of geotextiles and block stones, which have high requirements for various materials. Stones need to be hard, fresh, and seamless peeling layers, and should be weather-resistant and maintain a...

Claims

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Application Information

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IPC IPC(8): E02B7/02E02B11/00
Inventor 刘树国阎寒丁文洪靳振宇施克梁可刘绍中吴克谢伟
Owner 中国能源建设集团辽宁电力勘测设计院有限公司
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