A self-installing and self-recovering microseismic sensor device
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A microseismic sensor and self-recovery technology, which is applied in the field of geotechnical engineering, can solve problems such as difficult maintenance, affecting monitoring quality, and delaying workers' construction, and achieves the effects of simple construction procedures, good monitoring effects, and convenient maintenance
Active Publication Date: 2022-07-01
DALIAN UNIV OF TECH
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Problems solved by technology
As the face advances, the sensor needs to be moved forward continuously. Usually, the sensor can only be screwed out by using the installation rod, but it is difficult to remove the sensor because the cement anchor or resin anchor is fixed in the hole, and each sensor is expensive , greatly increasing the cost of microseismic monitoring
Moreover, the construction environment is complicated. Once the sensor has a monitoring problem, it is difficult to repair it. It can only be re-drilled and replaced with a new sensor. This not only wastes time and money, but also affects the quality of monitoring and delays the construction of workers.
[0004] In recent years, there have been some installation devices and methods for microseismic sensors, such as adding a sleeve outside the sensor and fixing it with cement, or using airbags or expansion agents to fix the sensor and then fixing the base with cement, but these methods have not been obtained in engineering. Promotion, there are mainly the following problems: 1. There is no need to get rid of the reinforcement of the anchoring agent, and a lot of consumables are still wasted
2 The construction process is complicated and difficult to operate
3 Airbags, expansion agents, etc. affect the contact between the sensor and the rock mass, thereby affecting the monitoring effect
4 Difficult to overhaul
5 It is difficult to control the coupling between the sensor and the anchoring agent in the hole, and the quality of the monitoring signal will be affected when the contact is poor
6 Affected by construction disturbance, the vibrating sensor and anchoring agent are easily separated
7 When the rock mass where the sensor is installed is deformed, it will also cause anchorage failure
Method used
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Embodiment 1
[0025] A self-installation and self-recovery microseismic sensor device, comprising: handle A1-1, handle B1-2, outer middle rod 2-1, inner middle rod 2-2, dynamometer 3, expansion joint 4, cable 5, The thrust rod 6, the connecting plate 7, the elastic rod 8, the bracket 9, the elastic film 10, the fixed disk 11, the sensor 12, the elastic probe 13, the handle A1-1 are connected with the thrust rod 6, and the thrust rod 6 Connected with the connecting plate 7, the connecting plate 7 is connected with the elastic rod 8, the elastic rod 8 is connected with a plurality of the brackets 9, one end of the bracket 9 is connected with the fixed plate 11, and the other end is connected with the fixed plate 11. The elastic film 10 is connected; the handle B1-2 is connected with the inner middle rod 2-2, the inner middle rod 2-2 is built in the outer middle rod 2-1, and the connecting plate 7 is connected to the inner middle rod 2-2. The outer middle rod 2-1 built in the thrust rod 6 is m...
Embodiment 2
[0032] A self-installation and self-recovery microseismic sensor device includes four systems, namely a control system, a monitoring system, a fixing system and a force transmission system.
[0033] 1 The control system includes: handle A1-1, handle B1-1, middle rod 2 including outer middle rod 21-, inner middle rod 2-2, dynamometer 3, expansion joint 4 including middle rod expansion joint 4-1, thrust Rod expansion section 4-2.
[0034] 2. The monitoring system includes: cable 5, sensor 12, elastic force probe 13 including elastic force chamber 13-1 and sensitive probe 13-2.
[0035] 3. The fixing system includes: a bracket 9 , an elastic film 10 , and a fixing plate 11 .
[0036] 4. The force transmission system includes: thrust rod 6, connecting disk 7, connecting disk bottom 7-1, connecting disk top 7-2, and elastic rod 8.
[0037] The handle A1-1 is connected with the thrust rod 6, the thrust rod 6 is connected with the connecting plate 7, the connecting disk 7 is connecte...
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Abstract
A self-installation and self-recovery microseismic sensor device belongs to the technical field of geotechnical engineering. The scheme is as follows: the handle A is connected with the thrust rod, the thrust rod is connected with the connecting plate, the connecting plate is connected with the elastic rod, the elastic rod is connected with several brackets, one end of the bracket is connected with the fixed plate, and the other end is connected with the elastic film; the handle B is connected with the inner center The rod is connected, the inner rod is built in the outer rod, the connecting plate is movably connected with the outer rod built in the thrust rod, the sensor is connected with the connection disk, the inner rod is connected with the elastic probe, and one end of the cable is connected with the sensor The other end is connected to the collection station, the dynamometer is arranged on the inner middle rod, and the thrust rod and the outer middle rod are provided with expansion joints for extending their respective lengths. Beneficial effects: The reinforcement of the anchoring agent is eliminated through the elastic device, and there is no need to waste consumables; the sensor is in close contact with the rock mass, and the monitoring effect is good; when the rock mass is deformed, the bracket of the sensor and the elastic probe will adjust themselves, and there will be no contact. bad phenomenon.
Description
technical field [0001] The invention belongs to the technical field of geotechnical engineering, in particular to a self-installation and self-recovery microseismic sensor device. Background technique [0002] Microseismic monitoring technology is an advanced technology that directly predicts the instability of large-scale engineering rock mass. It can judge the stress state inside the rock mass through the characteristics of rock fracture with acoustic emission, and capture the time, location and time of rock mass micro-fracture. The earthquake magnitude can be used to analyze the local damage location of the rock mass and the potential area of rock burst. In recent years, microseismic monitoring technology has been widely used in engineering practice, such as Hujiahe Coal Mine, Ashele Copper Mine, Hongtoushan Copper Mine, Baihetan Hydropower Station, Jinping II Hydropower Station, and Han-Weihe Diversion Project. [0003] However, before the microseismic monitoring, the...
Claims
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Application Information
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