![]() However, borehole methods are expensive and time-consuming, and indoor tests are affected by spatial and temporal factors, making it difficult to measure regional rock permeability accurately most of the time.Īfter applying an artificial current field using an array of exploration, the high-density electrical resistivity tomography method (ERT), which is noninvasive, nondestructive, quick, and cost-effective, uses the principle of different medium conductivity to obtain the distribution characteristics of the conduction current of the subsurface medium and reflects the information about the subsurface medium through the electrical resistivity difference. For this reason, it is especially crucial to investigate the rock permeability and structure of the single ridge.Īccording to Yuan and Zhang, the main index for measuring the permeability of rock mass is the rock permeability coefficient obtained by water pressure tests. It is common in the construction of upper reservoirs for pumped storage power plants to come across a single ridge, which is crucial to the storage efficiency and overall stability of the upper reservoir. Today, half a century later, these facilities have made a qualitative leap in terms of installed capacity and key technologies and have spread this technology around the world to the acclaim of owners. Since the 1960s in China, pumped storage power plant facilities have been investigated and researched for their significant role in regulating the peaks and troughs of electricity consumption. As time passes, the presence of potential leakage threats and their ongoing growth may have severe impacts on the entire reservoir dam region, further compromising the integrity of the subterranean rock structure. However, reservoir leakage has been a common calamity that occurs, and leakage is caused by a number of factors. This development has had a significant positive impact on industry, agriculture, and people’s quality of life. Introductionīy the end of 2018, China had created approximately 10,000 reservoirs, with a total reservoir capacity of. It was discovered that the calibration permeability obtained by inverting the power function model has the greatest applicability and can be applied to the permeability zoning of two high-density logging lines to obtain the characteristic dividing line of 0.5 Lu and 1.0 Lu more clearly and that this method has certain applicability and can serve as a reference for the design of reservoir impermeability. The method has some applicability and can serve as a guide for the design of reservoir impermeability. The following steps are conducted in this method first, water pressure tests were conducted on the borehole to determine the permeability of the granite mass at different depths next, the electrical resistivity values of the borehole rock were determined using geophysical logging techniques finally, three mathematical models were chosen to construct the relationship between the two, and their applicability in the study area was confirmed. The permeability coefficient of subsurface media has a certain correlation with electrical conductivity. A granite mass in Xinyang, China, was studied to better understand the features of the link between permeability and resistivity.
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