Measurements of soil radon gas of the Nmai Hka fault zone in the Chipwi hydropower station of Myanmar

Geometrical characteristics of hidden faults can be determined by measuring the radon anomalies of soil gas.Among four sections in the project of the Chipwi hydropower station of Myanmar,the abnormal soil radon gas is evident.The abnormal radon value near the dam area is about 3 to 8 times the background value,and the radon value of the southern dam is 100 times the background value,showing that the activity near the southern dam area is stronger.The under-coverage trend of the Nmai Hka fault is...