A liquid carbon dioxide phase-change controllable active source and method of using the same

Abstract

The invention discloses a controllable active vibration source of a liquid carbon dioxide phase change type, and an application method thereof. A liquid storage pipe (4) is filled with liquid carbon dioxide, wherein one end of the liquid storage pipe (4) is connected with a liquid injection head (1), and the other end of the liquid storage pipe (4) is connected with one end of a safety valve. The other end of the safety valve is connected with a radiant energy head (11), and the interior of the liquid storage pipe (4) is provided with a heating rod (3). The heating rod (3) is electrically connected with an intelligent trigger (2). A micro-vibration sensor (6) is in communication connection with a micro-vibration detection system (7) through a signal fidelity box (5). The micro-vibration detection system (7) is in control communication with a control computer (10), and the intelligent trigger (2) is in communication connection with the control computer (10). The vibration source can be quickly installed, is convenient to use, and can reflect the information of a micro-vibration source well.

Description

technical field [0001] The invention relates to an active seismic source, in particular to a liquid carbon dioxide phase change controllable active seismic source. The invention also relates to a method for using the liquid carbon dioxide phase change controllable active vibration source. Background technique [0002] With the gradual development of mining at home and abroad, the excavation of mine roadways and chambers causes the concentration and redistribution of in-situ stress, which makes the originally stable rock mass gradually enter an unstable state. The elastic potential energy accumulated in the rock mass is gradually or suddenly released in the form of seismic waves during the inelastic deformation of the rock mass, thus producing a series of microseismic events. Under the action of high ground stress, disasters such as rockbursts induced by the sudden release of elastic potential energy seriously restrict the production and operation of mines. Microseismic mon...

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Problems solved by technology

[0003] In the traditional microseismic monitoring process, in order to analyze the impact of blasting operations on the stability of mine roadways and chambers, the monitored area is mostly close to the blasting site, and a large number of blasting events are mixed in the monitored data, but there is currently no method to automatically and accurately identify them. Most of blasting events and microseismic events need to be picked up manually by people. This process not only consumes a lot of manpower, material and financial resources, but also takes a long time

Most importantly, the accuracy of manual picking is not high, which has great disadvantages in the process of guiding mine production

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