Study on parameter optimization of fracture network seepage model for uranium reservoir reconstruction
WANG Qizhi1，2，3，WANG Jiawei1，2，WANG Wei3，4，YUAN Wei3，4，NIU Qinghe3，4，WANG Wen3，4，ZHANG Chunhui1，2
(1. School of Civil Engineering，Hebei University of Science and Technology，Shijiazhuang，Hebei 050018，China；2. Innovation Center of Disaster Prevention and Mitigation Technology for Geotechnical and Structural Systems of Hebei Province，Shijiazhuang，Hebei 050018，China；3. Key Laboratory of Roads and Railway Engineering Safety Control，Ministry of Education
(Shijiazhuang Tiedao University)，Shijiazhuang，Hebei 050043，China；4. School of Civil Engineering，
Shijiazhuang Tiedao University，Shijiazhuang，Hebei 050043，China)
Abstract：In the process of uranium reservoir reconstruction，blasting is one of the effective means to improve the permeability of low permeability uranium reservoir，and the design optimization of blasting parameters is the key factor affecting the blasting effect. Therefore，a three-factor and five-level orthogonal numerical test is designed firstly. Based on the simulation results，the millisecond blasting parameters suitable for rock parameters in reservoir reconstruction are determined. The influence of different blasting methods on the formation effect of fracture network in reservoir reconstruction is studied，and the advantages and disadvantages of fracture network in reservoir reconstruction are comprehensively evaluated from multiple angles. Subsequently，different injection pressure simulation tests are carried out to quantify the variation of the flow rate of the solution in the reservoir with time. The results show that under the combination of blasting parameters with a millisecond time of 5 ms，a peak pressure of blasting load of 5 GPa，and a pressure rise time of 150 μs，the effect of reservoir seepage flow transformation is the best. This paper expands the understanding of uranium reservoir reconstruction and provides an important reference for future research.
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2024, Vol. 43 
