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Tunnel construction microseismic monitoring system and monitoring method

A technology for microseismic monitoring and tunnel construction, which is applied in seismic signal processing and other directions, can solve problems such as inability to effectively and comprehensively monitor tunnel damage, and achieve the effects of saving monitoring costs, convenient installation, and simple operation

Active Publication Date: 2018-01-09
BEIJING MUNICIPAL CONSTR +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a tunnel construction microseismic monitoring system and monitoring method for the technical problem that the existing tunnel monitoring method cannot effectively and comprehensively monitor the damage of the tunnel, which can effectively and comprehensively monitor the rock mass damage of the construction tunnel. monitoring to ensure the safety and reliability of the tunnel construction process; and it is easy to install and widely applicable

Method used

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  • Tunnel construction microseismic monitoring system and monitoring method
  • Tunnel construction microseismic monitoring system and monitoring method

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Embodiment 1

[0043] Embodiment 1 of the present invention provides a microseismic monitoring method for tunnel construction, which applies microseismic monitoring and imaging technology to tunnel monitoring. Through the optimal system layout and combination scheme, not only can an evaluation system be established in the aspect of comprehensive tunnel monitoring and early warning; , Large-scale monitoring of rock mass stress changes and damage development around the tunnel provides a basis for evaluating the safety of the tunnel structure. Embodiment 1 of the present invention comprises the following steps:

[0044] In step S1, a plurality of sensors are jointly arranged inside and outside the tunnel so that they are distributed in a three-dimensional space, and the sensors are connected to the collector.

[0045] A plurality of sensors are arranged together inside and outside the tunnel, wherein the sensors arranged inside the tunnel are distributed in a fan-shaped matrix, and the sensors ...

Embodiment 2

[0080] Embodiment 2 of the present invention provides a microseismic monitoring system for tunnel construction, the structure of which is as follows: Figure 5 As shown, it includes: a sensor 51 , an acquisition instrument 52 , a data processing unit 53 , a positioning unit 54 , a display unit 55 , and a double-difference imaging unit 56 .

[0081] Sensor 51 is a plurality of, is three-dimensional space and is distributed in tunnel inside and outside tunnel; Sensor 51 connects acquisition instrument 52 by cable; Acquisition instrument 52 links to each other with data processing unit 53 by bus; The difference imaging unit 56 is connected; the positioning unit 54 is connected with the display unit 55 .

[0082] The sensor 51 is responsible for sensing the seismic source information, and transmits the sensed seismic source information to the acquisition instrument 52;

[0083] The acquisition instrument 52 is responsible for receiving the seismic source information sensed by the...

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Abstract

The invention relates to a tunnel construction microseismic monitoring system and a monitoring method. The method comprises the steps that sensors are used to collect seismic source information; a number of sensors are spatially and three-dimensionally distributed inside and outside a tunnel and are connected with a collector; according to the waveform of the seismic source information, rock massfracture seismic source information and auxiliary seismic source information are separated; real-time data processing is carried out on the acquired seismic source information to acquire an effectivedata processing result, including the location, time and energy of cracks generated by a microseismic event corresponding to the rock mass fracture seismic source information and the corresponding shock wave transmission speed; according to the data processing result of the rock mass fracture seismic source information, rock mass cracks are located; and the energy and time of the microseismic event corresponding to each located rock mass crack are combined to acquire the time distribution law and the spatial distribution law of the cracks generated by the rock mass microseismic event. According to the invention, the location and time of the cracks generated by the microseismic event are accurately described to realize the description of a tunnel rock mass destruction process.

Description

technical field [0001] The invention relates to the technical field of civil engineering construction, in particular to a microseismic monitoring system and monitoring method for tunnel construction. Background technique [0002] As highway construction shifts from plains to mountainous areas, tunnels have become an important component of highways. Tunnel construction safety issues are also more important. Safety accidents occur more frequently during tunnel construction excavation and blasting, and the demand for safe production is very urgent. Therefore, it is necessary to continuously strengthen the safety monitoring during tunnel construction and improve the monitoring efficiency to prevent accidents. [0003] In the traditional tunnel construction process, due to the influence of excavation and blasting, the items that need to be monitored mainly include stress, strain, temperature, loose ring monitoring and rockburst monitoring. [0004] Currently, existing tunnel mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28G01V1/34
Inventor 孔恒姚海波吴进科孙强张鹏周阳文言靳利军马少军高飞高明生程立华尹留阳单中趁汪凉吴江张全贺黄振龙刘羽王雄付贵庆高万夫王鹏陈斌陈伟汤明崔宇声王彬张冰崔少光郭飞
Owner BEIJING MUNICIPAL CONSTR
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