Engineering case

Engineering case

Engineering Cases
Hubei Xiantao Groundwater Pollution Detection

engineering case

Hubei Xiantao Groundwater Pollution Detection

The main task of this exploration is to divide the distribution pattern of Quaternary clay layer and sand layer, to find out the distribution range of silt and silt layer in shallow clay layer, to preliminarily analyze the causes of groundwater pollution, and to guide the deployment of hydrogeological drilling work;

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Landslide Exploration in Wufeng Village, Tongling City, Anhui Province

engineering case

Landslide Exploration in Wufeng Village, Tongling City, Anhui Province

The strata in the landslide area are mainly Wotong Formation (D3w). The lower section (D3w1) is 102m thick, and the lithology is light red and gray-white thick medium-thick interbedded gravelly sandstone, interbedded with thin quartz sandstone and argillaceous siltstone, with relatively complete rocks. The lithology of the upper section (D3w2) is mainly gray black shale (former Gaolishan Formation), medium-thin quartz sandstone interbedded with multi-layer thin-layered siltstone, silty shale and argillate interbeds. The joints and fissures are developed, the rocks are broken, the argillate interbeds are easy to be argillated when exposed to water, and the top is thin-layered sandy shale.

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Site map of karst water exploration in southwest China

engineering case

Site map of karst water exploration in southwest China

The groundwater enrichment area obtained by the spectrum excitation meter is roughly the same as that of the high-density electrical method, but the lateral resolution of the spectrum excitation method is high, while the lateral resolution of the high-density electrical method is poor, the exploration depth is shallow, and the amount of information is small, so the guidance drilling position given by the spectrum excitation method is more appropriate.

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Exploration of Nanxiong Uranium Deposit in Guangdong Province

engineering case

Exploration of Nanxiong Uranium Deposit in Guangdong Province

Exploration content: to detect the location and scope of uranium deposits. Construction parameters: AB = 180 m, BM1 = 295 m, M1M2 = M2M3 =... = M8M9 = 15 m; The power supply voltage is 600V, the pole distance is large, and the detection depth reaches about 190m ~ 250m.

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High-density electrical method for dam leakage outlet in Hubei Province

engineering case

High-density electrical method for dam leakage outlet in Hubei Province

There is an obvious low resistance anomaly (blue) of 24~40 Ω · m at the point of 126~157 m and the depth of 15~40 m, which is a serious water seepage area.

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High-density electrical method for cavity exploration in a certain area of Guangxi

engineering case

High-density electrical method for cavity exploration in a certain area of Guangxi

According to the local geological data, the upper stratum of the area is mainly Quaternary loess with a thickness of about 20~30m, and the lower stratum is silty sandstone and fine sandstone, and the groundwater level is greater than 30m. It is inferred that the resistivity of the normal soil layer varies between 10~100 Ω · m. Therefore, the development of the area of the water hole and soil fissures should be mainly filled with air, in the electrical performance because of the high resistance, the resistivity of more than 1000 Ω · m, and the surrounding rock there is a significant difference in conductivity, in line with the application of high density electrical method.

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