CAJ | 학술논문

针对地形条件复杂、车辆振动及输电线等干扰因素较多地区对常规的地震、电磁类勘察方法受影响较大，采空区勘察精度不高的难题，将测氡技术引入铁路工程采空区勘察中。通过现场实验发现采空区有明显氡气异常反映，但不同类型采空区的异常反映有所不同，覆盖层中氡气分布对采空区的氡气异常有所影响，建立了覆盖层氡气浓度背景场值确定方法，提出不同类型采空区的氡气异常判释标准。实践表明，测氡法是一种有效的采空区勘察技术，在上述地区可以弥补地震、电磁类勘察方法受干扰严重的不足。
침대지형조건복잡、차량진동급수전선등간우인소교다지구대상규적지진、전자류감찰방법수영향교대，채공구감찰정도불고적난제，장측동기술인입철로공정채공구감찰중。통과현장실험발현채공구유명현동기이상반영，단불동류형채공구적이상반영유소불동，복개층중동기분포대채공구적동기이상유소영향，건립료복개층동기농도배경장치학정방법，제출불동류형채공구적동기이상판석표준。실천표명，측동법시일충유효적채공구감찰기술，재상술지구가이미보지진、전자류감찰방법수간우엄중적불족。
In view of the low survey accuracy in goaf because of perturbation on seismic and electromagnetic survey in areas with complicated topographic condition and interfered by vehicle vibration and transmission line, radon measurement is introduced in railway engineering. Site test shows that there exists an obvious anomaly over a goaf and the anomalies differ in different goaf on account of the radon distributions in the overburden. Methods are established to determine background concentration of radon distribution in the overburden, and standards are put forward to define the anomalies in different goaf. The results show that radon measurement is a useful detection technology in goaf and compensates for some shortcomings resulted from the perturbations on seismic and electromagnetic survey in the areas mentioned above.