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Hydropower house foundation handling method

A technology for the treatment of powerhouses and foundations of hydropower stations, which is used in infrastructure engineering, sustainable buildings, sheet pile walls, etc. It can solve the problems of insufficient bearing capacity of weak foundations, seepage damage, and excessive settlement deformation, and improve the anti-vibration liquefaction ability. , Improve the bearing capacity of the foundation, the effect of good integrity

Inactive Publication Date: 2014-08-06
CHANGJIANG SURVEY PLANNING DESIGN & RES
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Problems solved by technology

[0008] The purpose of the present invention is to overcome the above-mentioned deficiencies in the background technology, and provide a method for treating the foundation of a hydropower station building, which can solve the problems of insufficient bearing capacity of the large-scale weak foundation of the hydropower station building, excessive settlement deformation, seepage damage and foundation vibration liquefaction, and at the same time Less project investment, quick and easy construction

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments, but these embodiments should not be construed as limiting the present invention.

[0020] see figure 1 , the foundation involved in the method for treating the foundation of a hydropower station building in the present invention includes a soil layer 1, a grid net 3 composed of a plurality of cement mixing grid piles 2, a high-pressure rotary grouting joint pile 4, a plastic concrete cut-off wall 5, cement Stirring distribution pile 6 and high-pressure rotary jet distribution pile 7.

[0021] In this example, a water conservancy project located on the Jianghan alluvial plain is taken as an example. The powerhouse of the hydropower station is a river bed runoff power station. The bearing layer of the foundation is the fine sand layer of the lower part of the Holocene, with a thickness of about 6m, and the underlying sand and gravel layer, with a ...

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Abstract

The invention discloses a hydropower house foundation handling method which comprises the steps that A, multiple cement mixed grating piles are constructed to form a grating network; B, distribution piles are constructed in the middle of each grating of the grating network; C, high-pressure rotary spray connector piles are constructed at intersections of the longitudinal cement mixed grating piles and the transverse cement mixed grating piles; D, a plastic concrete diaphragm wall is constructed in a soil layer. By means of the hydropower house foundation handling method, the problems of insufficient bearing capacity, overlarge settlement deformation, a seepage failure and foundation vibratory liquefaction of a weak foundation of a hydropower house can be avoided, construction investment is low, construction is convenient and fast, and the method can be widely applied to the technical field of hydroelectric generation engineering.

Description

technical field [0001] The invention relates to the technical field of hydropower engineering, in particular to a method for treating the foundation of a hydropower station building. Background technique [0002] The hydropower plant can convert the mechanical energy contained in the flowing water into electrical energy, integrating construction, machinery manufacturing and electrical equipment and other technologies. The average stress of the foundation is required to be above 400KPa, and there are strict requirements on the bearing capacity, deformation and stability of the foundation. [0003] At present, most of the hydropower plants in my country are arranged on the bedrock, but with the development of hydropower resources in the middle and lower reaches of the river, the hydropower plants in some alluvial plains are completely located on non-bedrock foundations such as sand, pebbles, silt, and fine sand. This kind of natural foundation generally cannot meet the requir...

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Application Information

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IPC IPC(8): E02D27/32E02D27/34E02D5/46
CPCY02B10/50
Inventor 童迪石运深牟春来刘小江张志国赵世英李旻郭红亮杨志明赵晓秋罗岚展巍巍
Owner CHANGJIANG SURVEY PLANNING DESIGN & RES
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