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Conversion permeability coefficient-based method for controlling tunnel discharge by regions

A technology of permeability coefficient and zoning control, applied in drainage, calculation, earthwork drilling and mining, etc., can solve the problems of ineffective control of tunnel drainage, long mountain tunnels, time-consuming and other problems, and achieve reasonable drainage control, reasonable standards, and convenient implementation Effect

Active Publication Date: 2016-04-27
CCCC FIRST HIGHWAY CONSULTANTS
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Problems solved by technology

It is not complicated to use finite element method (such as finite element numerical calculation method) to calculate the tunnel water inflow, but the mountain tunnel is long, and it is difficult and time-consuming to establish an overall analysis model; the conventional axisymmetric homogeneous analytical solution has a clear concept and simple calculation. It is widely used, but there is no suitable method to control the tunnel drainage according to the axisymmetric solution, so the tunnel drainage cannot be effectively controlled

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  • Conversion permeability coefficient-based method for controlling tunnel discharge by regions
  • Conversion permeability coefficient-based method for controlling tunnel discharge by regions
  • Conversion permeability coefficient-based method for controlling tunnel discharge by regions

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Embodiment Construction

[0037] Such as figure 1 The tunnel drainage partition control method based on converted seepage coefficient shown in the figure divides the constructed tunnel 1 into a plurality of tunnel segments from back to front along the longitudinal extension direction, and calculates the tunnel drainage volume for the plurality of tunnel segments respectively. Control, the tunnel displacement control method for all tunnel segments is the same; when controlling the tunnel displacement for any tunnel segment, the following steps are included:

[0038] Step 1. Prediction of tunnel displacement: use the conventional tunnel displacement prediction method to predict the tunnel displacement per linear meter of the tunnel segment, and obtain the tunnel displacement prediction value Q of the tunnel segment, and the unit of Q is m 3 / m s;

[0039] Step 2. Calculation of lining conversion conversion seepage coefficient: According to the predicted value Q of tunnel drainage obtained in step 1, and...

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Abstract

The invention discloses a conversion permeability coefficient-based method for controlling tunnel discharge by regions. The method comprises the following steps: dividing a tunnel under construction into a plurality of tunnel segments along a longitudinal extension direction from back to front, and respectively performing tunnel discharge control on the tunnel segments, wherein methods for controlling the tunnel discharge of all the tunnel segments are identical; the step of performing the tunnel discharge control on any tunnel segment comprises the following steps: I: predicting the tunnel discharge; II: calculating a lining conversion permeability coefficient; III: determining tunnel control discharge; IV: determining a water plugging and discharge limiting water level control standard; V: judging a water plugging and discharge limiting region; VI: performing water plugging and discharge limiting: grouting the outer side of a lining of each tunnel segment by adopting a grouting system and forming a grouting circle so as to perform water plugging and discharge limiting on the tunnel segment. The method disclosed by the invention is simple in steps, reasonable in design, convenient to implement and has a good using effect; the tunnel discharge of an ecologically sensitive region is effectively controlled by regions and by combining with the reasonable water plugging and discharge limiting water level control standard.

Description

technical field [0001] The invention relates to a tunnel drainage control method, in particular to a tunnel drainage partition control method based on converted seepage coefficient. Background technique [0002] Ecologically sensitive areas refer to those areas that are particularly sensitive to human production and living activities or have potential natural disaster impacts, and are extremely vulnerable to human-made improper development activities that may produce negative ecological effects. The problems caused by tunnel construction (especially the construction of long tunnels), drainage, ground subsidence, environmental pollution, and vegetation destruction have greatly disturbed and destroyed the structure and function of the ecosystem, and threatened the health of the groundwater system. With the implementation of my country's Twelfth Five-Year Plan, highway and railway tunnels are developing rapidly, and a large number of tunnels pass through ecologically sensitive ...

Claims

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Application Information

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IPC IPC(8): G06F17/50E21F16/02
CPCE21F16/02G06F30/23G06F2113/14
Inventor 刘昭姚红志史宝童赵礽晔张晓旭张秀平
Owner CCCC FIRST HIGHWAY CONSULTANTS
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