Aquifer Medium Characterization of Unconsolidated Deposit in Guqiao Mining Area of Anhui Province, Based on Transition Probability Geostatistics

doi:10.19657/j.geoscience.1000-8527.2022.003

Abstract

Abstract:

Spatial distribution and heterogeneity of aquifer medium have critical influence on groundwater flow and solute transport. To characterize the spatial distribution of aquifer medium, the Guqiao mining area in Anhui Province was investigated, and the stochastic model of aquifer medium was established through transition probability geostatistics. We characterize the spatial continuity and variability of the hydrogeological structure of the mining area. Moreover, the local simulated profiles obtained by stochastic simulation were compared with the original hydrogeological profiles. Our results show that the conditional simulation method based on transition probabilities can accurately depict the local hydrogeological structure. Comparing the simulated profiles with the original ones, we found that the simulated results are consistent with the actual spatial distribution of the aquifer medium. This shows that the transition probability geostatistics approach can well adapt to characterize the he-terogeneity of aquifer medium.

Key words: transition probability geostatistics, Markov chain, stochastic simulation, Guqiao mine, aquifermedium

CLC Number:

P641.4

DENG Hui, MA Lei, GAO Di, ZHAO Weidong, YANG Man. Aquifer Medium Characterization of Unconsolidated Deposit in Guqiao Mining Area of Anhui Province, Based on Transition Probability Geostatistics[J]. Geoscience, 2022, 36(02): 602-609.

Figures/Tables 6

Fig.1 Location of the study area and borehole locations

Fig.2 Simulated aquifer medium model of the unconsolidated formation in the Guqiao mine with transition probability geostatistics

Fig.3 Comparison of the simulated profile (a) with the original hydrogeological profile (b) of Line 3 (profile’s location denoted in Fig.1)

Fig.4 Comparison of the simulated profile (a) with original hydrogeological profile (b) of Line 13 (profile’s location denoted in Fig.1)

Fig.5 Comparison of the simulated profile (a) with the original hydrogeological profile (b) of Line 15 (profile’s location denoted in Fig.1)

Fig.6 Comparison of the simulated profile (a) with the original hydrogeological profile (b) of Line 20 (profile’s location denoted in Fig.1)

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