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Method and system for exploration and treatment of potential gushing points of karst tunnel

A water gushing point and potential technology, which is applied in the detection and treatment method and system field of potential water gushing points in karst tunnels, can solve problems such as inability to effectively detect potential water gushing points, achieve better results, ensure governance effects, and ensure operational safety.

Active Publication Date: 2020-08-07
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the existing technology, the purpose of the present invention is to provide a method and system for detecting and treating potential water gushing points in karst tunnels, which can solve the problem that the existing technology cannot effectively detect potential water gushing points

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  • Method and system for exploration and treatment of potential gushing points of karst tunnel
  • Method and system for exploration and treatment of potential gushing points of karst tunnel
  • Method and system for exploration and treatment of potential gushing points of karst tunnel

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Embodiment 1

[0037] Attached below Figure 1-Figure 5 The present invention is described in detail, specifically, as follows:

[0038] This embodiment provides a method for detecting and treating potential water gushing points in karst tunnels, including the following steps:

[0039] (1) Detection of potential water gushing points:

[0040] Obtain the forecast data of heavy rainfall 1 in the tunnel site area in advance, and select the detection of potential water gushing points under the heavy rainfall weather of >50mm / d. The heavy rainfall 1 causes the groundwater table 2 to rise rapidly above the tunnel 3, triggering the potential water inrush point 4, and the position of each potential water influx point 4 is recorded and the orifice pipe 5 is installed in sequence. Add a flow sensor to monitor the water inflow data in real time until the heavy rainfall 1 ends and the groundwater level 2 drops back below the tunnel 3 . In this embodiment, the first heavy rainfall revealed a total of ...

Embodiment 2

[0058] This embodiment takes the Longyong Expressway Dam Tunnel in Hunan Province as the restoration object. This tunnel is a typical karst tunnel in the groundwater fluctuation zone. The tunnel is excavated in the non-rainy season, during which no water gushing occurs. After the rainy season, the heavy rain triggered potential water inflow points, and the total water inflow increased sharply to 3.6×105m 3 / d, the lining was severely damaged, and construction was postponed indefinitely.

[0059] In order to completely eliminate potential water gushing hazards and ensure project safety, a targeted grouting water blocking scheme was designed. This scheme uses the potential water gushing point detection and treatment method described in Example 1 for grouting treatment, and uses multiple heavy rainfalls to find potential water gushing points, inspect and supplement grouting, eliminating all hidden water gushing hazards. After multiple rainy season inspections in the following ye...

Embodiment 3

[0061] This embodiment provides a system for detecting and treating potential water gushing points in karst tunnels, including:

[0062] The potential water gushing point detection module obtains the detection results of potential water gushing points under heavy rainfall conditions;

[0063] The geophysical detection module obtains the geophysical detection results of water sources;

[0064] A water gushing type determination module is used to determine the water gushing type of a potential water gushing point through the analysis method of the potential water gushing point and the hydraulic connection analysis method of the water source;

[0065] The treatment scheme determination module is used to determine the treatment scheme for the water gushing type of each potential water influx point;

[0066] The effect checking module is used to check the effect of potential water influx points that have been treated and find new potential water influx points.

[0067] Those skil...

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Abstract

The invention discloses a method and system for exploration and treatment of potential gushing points of a karst tunnel. The method solves the problem that the potential gushing points cannot be effectively explored in the prior art, a process of multiple-strong rainfall-potential gushing point exploration-gushing point plugging is adopted, potential gushing of the karst tunnel in an underwater fluctuation zone is thoroughly cured, and occurrence of secondary disasters after tunnel building is avoided. The method comprises the following steps that the potential gushing points are explored by utilizing strong rainfall conditions, geophysical exploration on a water source is conducted, gushing types of the potential gushing points are determined based on a potential gushing point and water source hydraulic connection analysis method, a treatment scheme is separately determined for the gushing type of each potential gushing point, effect inspection on the treated potential gushing point is conducted, a new potential gushing point is found, and the above steps are repeated for supplementary treatment.

Description

technical field [0001] The invention relates to the technical field of prevention and control of water inrush disasters in karst tunnel engineering, in particular to a method and system for detecting and treating potential water inrush points in karst tunnels. Background technique [0002] my country's karst areas are widely distributed, accounting for about 15% of the country's land area. In recent years, there have been more and more cases of tunnel construction in karst areas. Groundwater inflow is one of the main problems faced by tunnel excavation, and a slight mishandling may lead to serious casualties and economic losses. After years of engineering experience, it can be found that the groundwater problems of karst tunnels can be divided into two categories: one is the karst tunnels in the saturated water zone below the stable groundwater level, and the groundwater problems in the construction process have been paid attention to. In-depth research has been carried out...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F17/18E21F17/00E21D11/10E21D11/38
CPCE21D11/10E21D11/38E21F17/00E21F17/18
Inventor 张霄蓝雄东张庆松杨腾李相辉李珍张旭豪
Owner SHANDONG UNIV