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利用气体地球化学方法对乌鲁木齐市城区7条隐伏断裂的重点地段进行了11个剖面的定位探测。结果发现,断裂带中地球脱气现象十分强烈,而远离断裂脱气则迅速减弱。11个剖面中9个剖面的土壤气氧在断裂主方异常显著,6个剖面的土壤气汞对断裂反映明显。经过数据处理和对比分析,有6条隐伏断裂在地面延伸的位置得到了较精确的判定。应当指出,地下水和人为开挖等因素对城市隐伏断裂的气体地球化学探测有较明显的干扰。
The gas geochemical method was used to locate and survey 11 sections of key sections of 7 buried faults in Urumqi urban area. It is found that the degassing of the Earth in the fault zone is very intense, while the degassing away from the fracture rapidly decreases. Soil gas oxygen in 9 sections of 11 sections was abnormally significant in the main fault and 6 cases of soil gas mercury reflected the faults obviously. After data processing and comparative analysis, there are 6 hidden faults in the ground extension of the location has been more accurate determination. It should be pointed out that groundwater and man-made excavation and other factors have obvious interference with gas geochemical exploration of urban concealed faults.