Abstract
According to BET project of High-level radioactive waste geological disposal, the smooth blasting parameters and the corresponding blasting vibration monitoring scheme are designed separately. Combining with the blasting vibration monitoring scheme, the blasting vibration monitoring was carried out with the blasting test simultaneously. It was found that the maximum vibration velocity was controlled within a reasonable range. Furthermore, the vibration attenuation law was obvious after analysis, which indicated that the blasting parameters design and vibration monitoring scheme were reasonable. It illuminated that the blasting parameters designed were proved to be reasonable and desirable. Moreover, the vibration reduction measurements for this project have been put forward. This study can provide the corresponding experimental data and theoretical support for the High-level radioactive waste geological disposal. The result and the theoretical knowledge could be applied to the blasting and excavation of the deep geo-engineering and the HLW geo-disposal.
Highlights
High level radioactive waste is an inevitable product of the nuclear industry
According to China National Nuclear Power Development and Long-term Plan [1] approved by the State Council, it is expected that by 2025, the installed capacity of nuclear power will reach 70 million kilowatts, the capacity of the installation is 30 million kilowatts, and there will be 13.8200 tHM spent fuel produced by the whole life period of nuclear power should be safely disposed, which becomes a major safety problem to be solved
To discuss the response characteristics of structure under the blasting vibration wave excitation, to study the relationship between the vibration response characteristics and the blasting mode. As it is mentioned above, the maximum vibration velocity only measures the instantaneous response of the blasting, and it could not describe the damaged depth of the blasting impact on the surrounding rock
Summary
High level radioactive waste is an inevitable product of the nuclear industry. Especially, it has been accumulated with the fast development of nuclear power construction. Combined with the blasting construction, the threshold value of the vibration monitoring data outside the explosion source 30 m has been put forward, and the influence of blasting on the damage of the surrounding rock is quantified [12, 13]. The damage of the surrounding rock is more important than that of the nuclear power station infrastructure construction, and the vibration monitoring distance is required as close as possible. It would be useful to quantify the blasting vibration and the degree of EDZ to the High-level radioactive waste geological disposal [14,15,16]. For the geological disposal of High-level radioactive waste, how to check the blasting damage of engineering rock mass is a challenge. Taking the BET (Beishan Exploration Tunnel) in Beishan area, Gansu Province, as an example, the vibration control method is introduced, which is intended to provide reference and experience for the geological disposal of URL and the other similar geo-engineering
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