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Construction method of tunnel reverse slope tunneling construction accumulated displacement calculation model

A technology of calculation model and construction method, which can be used in drainage, earthwork drilling, special data processing applications, etc.

Active Publication Date: 2020-08-28
四川省交通勘察设计研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, there is no method for calculating the engineering quantity of reverse slope drainage during the construction period

Method used

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  • Construction method of tunnel reverse slope tunneling construction accumulated displacement calculation model
  • Construction method of tunnel reverse slope tunneling construction accumulated displacement calculation model
  • Construction method of tunnel reverse slope tunneling construction accumulated displacement calculation model

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Embodiment 1

[0031] A method for constructing a calculation model of cumulative displacement in tunnel reverse slope excavation construction includes the following steps:

[0032] Step 1), obtain the basic data of tunnel construction, including tunnel length L, tunnel design water inflow V and tunnel excavation footage D;

[0033] Step 2), constructing a displacement calculation model based on the basic data combined with the construction situation of tunnel reverse slope excavation:

[0034] Step 21), according to the reverse slope excavation construction situation of the tunnel, the mountain shape of the tunnel is approximated as a triangle, and then the segmental drainage distribution of the tunnel is also a triangle. / 2 The length of the tunnel and the designed water inflow of the tunnel remain unchanged during the construction period, and the segmented drainage triangle of the tunnel is a similar triangle to the mountain-shaped triangle of the tunnel, for example figure 1 shown;

[...

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Abstract

The invention discloses a construction method of a tunnel reverse slope tunneling construction accumulated displacement calculation model, wherein a displacement calculation model is constructed by combining basic data with a tunnel reverse slope tunneling construction situation. The method comprises the steps of firstly, according to the tunnel reverse slope tunneling construction situation, a tunnel mountain shape is approximated to be a triangle, and tunnel segmented drainage distribution is also a triangle; according to the triangle area similarity principle, a preliminary calculation model of the displacement yi during accumulated tunneling Xi m of tunnel reverse slope construction is constructed; respectively obtaining the calculation model of the displacement yi when the Xi meter istunneled, and respectively obtaining the displacement from the first day to the nth day, wherein n is the tunneling construction period; and finally, accumulating the obtained everyday displacement to obtain a calculation model of the accumulated displacement in the construction period. According to the method, the calculation model of the water discharge in the construction period of the reverseslope tunneling tunnel is constructed, accords with the actual situation, can be used as the basis for calculating the water discharge construction measure cost in the design stage, and can also be used as the reference for making a construction water discharge scheme.

Description

technical field [0001] The invention relates to the technical field of tunnel civil engineering construction, in particular to a method for constructing a calculation model of cumulative displacement in tunnel reverse slope excavation construction. Background technique [0002] For traffic tunnels with a single-slope longitudinal slope, when two-way excavation is used for construction, the side with a higher altitude will be excavated on a reverse slope, and the problem of reverse slope drainage during the construction period must be considered. The reverse slope drainage construction plan includes three parts: mechanical equipment selection and matching, pipeline system, and power supply system, and the cumulative drainage during the tunnel construction period is the basis for mechanical equipment selection and matching and the overall design of reverse slope drainage. In the design stage, it is necessary to estimate the total amount of reverse slope drainage works during t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13E21F16/02
CPCG06F30/13E21F16/02
Inventor 王希宝袁松张生章志高雷良王建华陈华
Owner 四川省交通勘察设计研究院有限公司
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