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Method and device for tunnel advance geology forecast with tunnel face blasting as focus

A technology of advanced geological forecasting and face-to-face, applied in measurement devices, seismology, geophysical measurement, etc., can solve problems such as threats to operator safety, humidity, air pollution, etc., to reduce interference signals and improve signal-to-noise ratio. Effect

Inactive Publication Date: 2013-07-24
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0011] 3. The air in the underground cavern is dirty, humid, and the environment is harsh. Collecting data in the cavern is not conducive to the health of the operators, and when the tunnel face is blasted, it will threaten the safety of the operators. It is necessary to improve the working environment of the operators

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  • Method and device for tunnel advance geology forecast with tunnel face blasting as focus
  • Method and device for tunnel advance geology forecast with tunnel face blasting as focus
  • Method and device for tunnel advance geology forecast with tunnel face blasting as focus

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Embodiment Construction

[0071] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0072] Such as figure 1 , figure 2 , image 3 As shown, a method of advanced geological prediction of tunnels with blasting at the face of the tunnel as the seismic source, the steps are:

[0073] 1. Drill a borehole 2a and a borehole 2b on the two side walls 4 at the entrance of the tunnel 1 respectively. The borehole 2a and the borehole 2b are respectively parallel to the bottom plate of the cavern and perpendicular to the direction of the cavern. The depth of the borehole is 2m. The size of the diameter should be convenient for embedding two three-component geophones 3a, 3b. The depth of both boreholes is 2m. The method of embedding the first three-component geophone 3a into the borehole 2a is as follows: first fill the inside of the borehole 2a Butter is used as the coupling agent between the first three-component geophone 3a and the drill hole 2a, p...

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Abstract

Provided are a method and a device for tunnel advance geology forecast with tunnel face blasting as a focus. The method comprises the steps of (1) drilling holes on two lateral walls at the inlet position in a tunnel; (2) filling a coupling agent into the drilled holes, and attaching weave detectors to the walls of the drilled holes; (3) winding a trigger circuit copper wire on cartridged explosive, and placing the cartridged explosive into a blasted hole of the tunnel face; (4), enabling two three-component weave detectors buried in a tunnel hole to receive reflective earthquake wave signals; (5) sending the signals to an amplifier after the signals are selected by a multi-way switch; (6) enabling the amplifier to amplify the signals and then transmit the signals to an analog / digital (A / D) converter through wireless transmission; (7) enabling a wireless communication module of a control chamber to receive a wireless signal and then transmit the wireless signal to a host, and recording the signal; and (8) achieving geology forecast through an processing program installed in the host. The device comprises signal acquisition, wireless communication and control and a data analyzing system. The method is simple, easy and low in cost, can be used for advance geology forecast of tunnels, holes and roadway underground spaces, and achieves automation and normalization of geology forecast.

Description

technical field [0001] The present invention relates to the technical field of artificial seismic wave acquisition and processing, more specifically to a tunnel construction advance geological prediction method using tunnel face blasting as the seismic source, and also relates to an advanced tunnel construction method using tunnel face blasting as the seismic source The geological prediction device is suitable for advanced geological prediction of unfavorable geological bodies in the excavation of underground caverns in transportation, water conservancy, and mining industries. Background technique [0002] With the rapid development of engineering construction in my country's hydropower, transportation, mining and other industries, more and more tunnels (roads, railways, subways, etc.), roadways and other underground caverns are built in rock formations with complex geological environments. Due to the concealment and the complexity of the geological environment, the undergro...

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Application Information

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IPC IPC(8): G01V1/00G01V1/104G01V1/20
Inventor 焦玉勇田湖南张秀丽王浩张焕强郑飞
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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