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In order to evaluate the quality of "stepped" concrete cut-off wall of Hejiagou reservoir dam, the ground penetrating radar was used to detect the whole cut-off wall, and the cross-hole ultrasonic method was used to detect the " steps" of the concrete cut-off wall. The detection shows that the overall quality of the cut-off wall is good. Core drilling and water pressure test were carried out in the areas where there may be abnormalities, and the quality of the cut-off wall was comprehensively evaluated in combination with the monitoring data of the osmometer in front of and behind the cutoff wall. The results show that no major quality defects are found on the cutoff wall, local abnormalities exist, and the overall working performance is normal. This comprehensive geophysical detection method can effectively reflect the actual quality of the "stepped" cutoff wall, and the comprehensive utilization of relevant technologies can provide reference for similar projects.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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