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Calculation method of seepage inflow around hanging water-intercepting curtain

A calculation method and water inflow technology, which is applied in complex mathematical operations, construction, infrastructure engineering, etc., can solve the problems of large deviations in the calculation results of water inflow, and achieve the effect of convenient calculation, simple calculation principle and high precision

Active Publication Date: 2019-01-15
SHENZHEN GONGKAN GEOTECHN GRP
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for calculating the water inflow around the suspended water cut-off curtain, aiming to solve the problem in the prior art that the calculated result of the water inflow in the foundation pit of the suspended water-cut curtain has a large deviation

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  • Calculation method of seepage inflow around hanging water-intercepting curtain

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Embodiment Construction

[0020] 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.

[0021] In the accompanying drawings of this embodiment, the same or similar symbols correspond to the same or similar components; The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. Construction and operation, so the words describing the positional relationship in the drawings are only for...

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Abstract

The invention relates to the technical field of calculation of seepage inflow amount around hanging water-intercepting curtain, a method for calculating the amount of seepage flow around the hanging water cut-off curtain includes such steps as determining hw value, hd value and he value, wherein hw is the distance from the groundwater level line to the foundation pit bottom, hd is the length of the wat cut-off curtain bottom embedded in the foundation pit bottom, and he is the distance from the water cut-off curtain bottom to the top surface of bedrock; 2) obtaining the maximum hydraulic gradient value imax and the minimum hydraulic gradient value immin according to the influence radius R of the groundwater level descent and the equivalent radius ro of the foundation pit, and combining with the equivalent values of hw, hd and he; 3) according to the weight coefficient xi of the maximum hydraulic gradient and the weight coefficient 1 of the minimum hydraulic gradient; The average hydraulic gradient (img file = 'DDA000181065539000011. TIF' wi= '66' he= '74' / ) 4) is obtained according to the seepage area A at the foundation pit bottom and the equivalent permeability coefficient keq, the water inflow quantity Q around the bottom of the water interception curtain into the foundation pit is obtained. The imax value and the imin value are corrected by the coefficient xi. The average hydraulic gradient (img file = 'DDA0001810655390000012. TIF' wi= '59' he= '73' / ) is obtained by weighted averaging, which is simple in principle, convenient in use and high in precision.

Description

technical field [0001] The invention relates to the technical field of calculation of seepage inrush volume around a suspended water cut-off curtain, in particular to a calculation method for seepage inflow around a suspended water cut-off curtain. Background technique [0002] In the design and construction of the dewatering engineering of the foundation pit project, the water cut-off curtain is generally used to effectively control the groundwater to prevent the seepage damage or the collapse of the pit wall caused by the large amount of groundwater seeping into the foundation pit, and create a good operation for the excavation of the foundation pit and the construction of the foundation project. environment. [0003] When the aquifer is buried deep and thick, restricted by factors such as construction equipment, stratum conditions, and project cost, the water-cutting curtain cannot completely cut off the aquifer and embed it into the impermeable bedrock, and the bottom of...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/18E02D19/12
CPCG06F17/18E02D19/12
Inventor 王贤能叶坤刘治军
Owner SHENZHEN GONGKAN GEOTECHN GRP
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