Predication method for depositing length of gushing mud in water-bursting and mud-bursting hole of tunnel

A technology of mud inrush and water inrush, which is applied in the field of predicting the length of mud inrush and silt in tunnel water inrush and mud inrush. easy effect

Active Publication Date: 2018-11-30
HUAQIAO UNIVERSITY
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  • Claims
  • Application Information

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Problems solved by technology

So far, there is no prediction method for the length of mud outbursts

Method used

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  • Predication method for depositing length of gushing mud in water-bursting and mud-bursting hole of tunnel
  • Predication method for depositing length of gushing mud in water-bursting and mud-bursting hole of tunnel
  • Predication method for depositing length of gushing mud in water-bursting and mud-bursting hole of tunnel

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Embodiment Construction

[0017] The present invention will be further described below in combination with specific embodiments.

[0018] A method for predicting the length of mud gushing and silting in tunnel water and mud gushing tunnels, characterized in that it comprises the following steps:

[0019] Step 1, sampling by drilling boreholes, taking typical undisturbed soil above and below the groundwater level in the fractured zone respectively, and testing the density ρ, water content ω and specific gravity d of the typical undisturbed soil s , and then calculate the natural weight γ of the soil and the underwater saturated weight γ sat ;

[0020] Among them, γ=ρg, g is the acceleration due to gravity;

[0021] Step 2, by drilling boreholes, measure the height from the groundwater table in the broken zone to the ground, that is, the buried depth of the groundwater z 1 ; Then according to the groundwater level elevation h 1 and tunnel vault elevation h 2 , calculate the distance z from the gro...

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Abstract

The invention provides a predication method for the depositing length of gushing mud in a water-bursting and mud-bursting hole of a tunnel. The predication method comprises the seven steps of: calculating out natural unit weight Gamma of a soil body and underwater saturation unit weight Gamma sat, measuring and calculating a buried depth z1 of underground-water level and a distance z2 from the underground water level to a tunnel arch crown, measuring the shape and size of a water-bursting and mud-bursting breach to obtain cross-section area A of the water-bursting and mud-bursting breach and measuring the undrained shear strength cu and the like. By application of the technical scheme, the use is simple and convenient, the process characteristic is strong, and the result is reliable, so that the water-bursting and mud-bursting disasters can be effectively prevented.

Description

technical field [0001] The present invention relates to a technical field, in particular to a method for predicting the length of mud gushing and silting in tunnel water and mud gushing caves. Background technique [0002] With the development and needs of transportation infrastructure construction, people pay more and more attention to the development and utilization of underground space. Tunnel construction is an important part of it. It has the ability to overcome the influence of terrain elevation, improve routes, shorten mileage, and improve Speed, save time, reduce land use, ease traffic and other advantages, and thus get rapid development. However, tunnel engineering often passes through various types of geological conditions. When encountering special structures such as karst caves, underground rivers, fault fracture zones, or complex and unfavorable geological bodies, it is in an environment of unfavorable stress fields, seepage fields, and temperature fields, and w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 常方强
Owner HUAQIAO UNIVERSITY
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