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A two-parameter curve tunnel section and hydraulic design method

A design method and two-parameter technology, applied in the field of design technology, can solve problems such as complexity and tedious workload, and achieve the effect of good integrity, scientific and reliable principles, and small workload

Inactive Publication Date: 2020-02-07
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The hydraulic design of the tunnel section also needs to use different mathematical formulas to calculate and confirm the hydraulic elements according to the location of the connection point. If the stability of the surrounding rock and the pressure conditions of the mountain rock are different, it is necessary to adjust the aspect ratio of the tunnel section (width and Height), and then it is necessary to re-design the section shape design, hydraulic design, structural design and lining construction design of the tunnel. It is self-evident that the complexity, tediousness and heavy workload

Method used

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  • A two-parameter curve tunnel section and hydraulic design method
  • A two-parameter curve tunnel section and hydraulic design method
  • A two-parameter curve tunnel section and hydraulic design method

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Embodiment 1

[0034] The specific process steps of the two-parameter curve tunnel section and water conservancy design method involved in this embodiment include establishing the WU-type two-parameter curve equation, establishing the area formula of the WU-type two-parameter curve tunnel section, and determining the clearance area of ​​the WU-type two-parameter curve tunnel. There are five steps to determine the internal water depth, determine the section width-to-height ratio of the WU-type two-parameter curve tunnel, and determine the width and height of the WU-type two-parameter curve tunnel section:

[0035] (1) Establish a WU-type two-parameter curve equation: According to the similarity principle of momentum and mass transfer, it is deduced that there is a similarity relationship between stress flow (diffusion) and pollutant diffusion, and the isoconcentration standard curve equation of pollutant diffusion is derived , as the equal-stress standard curve equation, the curve is the shape...

Embodiment 2

[0043] This embodiment involves the verification of the two-parameter curved tunnel section and the water conservancy design method. According to the two parameters of the width W and height H of the 11 types of tunnel sections such as horseshoe-shaped and egg-shaped in the references given in Table 1, Equation 1 is used respectively Draw the corresponding WU-type two-parameter curve tunnel section, such as Figure 6 ~ Figure 16 As shown, the dotted line in the figure represents the section of the WU-type two-parameter curve tunnel, and the thin dotted line represents the maximum width line of the WU-type two-parameter curve tunnel section; Figure 6 ~ Figure 16 It can be seen that the section of the WU-type two-parameter curve tunnel is very close to the section curves of 11 types of tunnels such as horseshoe and egg-shaped in the reference, and most of them are in good agreement, especially the WU-type two-parameter curve tunnel section and Figure 10 Horseshoe-shaped (speci...

Embodiment 3

[0058] This embodiment relates to an example of tunnel section shape and hydraulic design using a two-parameter curved tunnel section and hydraulic design method. The design flow rate of a water delivery project is 50m 3 / s, the increased flow rate is counted as 20%. Due to terrain reasons, it is necessary to build a non-pressure tunnel. Internal roughness and gradient conditions, the average flow velocity in the cave is designed according to the condition of 1.80m / s. According to Equation 1 of the WU-type two-parameter curve tunnel section and the hydraulic design method and the corresponding calculation formula, the hydraulic design is carried out. According to the water flow continuity equation: water delivery flow = water flow area × average flow rate, and the water flow area in the reverse thrust tunnel is A = 1.2 ×50 / 1.8=33.33m 2 , the clear area A of the pressure-free tunnel is calculated by formula 4 m =A / 0.8=41.67m 2 , according to the characteristics of the stabi...

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Abstract

The invention belongs to the technical field of hydraulic tunnel engineering design and relates to a method for designing two-parameter curve tunnel section and hydraulic engineering, also known as a method for designing WU type two-parameter curve tunnel section and hydraulic engineering. The method comprises the five process steps of establishing a WU type two-parameter curve equation, establishing an area formula of the two-parameter curve tunnel section, determining the profile area of the WU type two-parameter curve tunnel and the depth of water in the tunnel, determining the width-to-height ratio of the WU type two-parameter curve tunnel, and determining the width and the height of the WU type two-parameter curve tunnel section. The method is used for designing the section shape and the corresponding water passing capacity, wherein the section shape is represented by an independent two-parameter curve equation; the continuity, the derivability, the stress condition and the smoothness of the curve (inner outline) and the derivative thereof are high; and the method is particularly suitable for section design and engineering construction of the non-pressure tunnel, and is also suitable for section design and engineering construction of the pressure tunnel with good geological conditions and low water pressure.

Description

Technical field: [0001] The invention belongs to the technical field of hydraulic tunnel engineering design, and relates to a two-parameter curved tunnel section and hydraulic design method, also known as a WU-type two-parameter curved tunnel section and hydraulic design method, which is used to design the section shape of the tunnel and the corresponding process. Water capacity, where the cross-sectional shape is characterized by an independent two-parameter curve equation, the curve (inner contour) and its derivatives have good continuity, conductivity, stress conditions and smoothness, especially suitable for non-pressure The section design and engineering construction of tunnels can also be applied to the section design and engineering construction of pressurized tunnels with good geological conditions and low water pressure. Background technique: [0002] Hydraulic tunnels refer to water tunnels excavated in mountains or underground for irrigation, power generation, wat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/13G06F30/23E02B9/04
CPCE02B9/04G06F30/13G06F30/23Y02E10/20
Inventor 武周虎
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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