During 1991-1993,the activity levels of the bone-coal mines were investigated in Zhejiang,Hubei,Hunan,Jiangxi and Anhui Province,respectively,where the reserve of bone-coal is about 90% of our country’s total reserve...During 1991-1993,the activity levels of the bone-coal mines were investigated in Zhejiang,Hubei,Hunan,Jiangxi and Anhui Province,respectively,where the reserve of bone-coal is about 90% of our country’s total reserve.The average of γ radiation doserate level measured for bone-coal,bone-coal cinder(BCC) and bone-coal cinder brick(BCCB) in these provinces is about 500 nGy/h,400 nGy/h and 700 nGy/h respectively,while that for fields,roads and houses made of BCCB in corresponding regions of these provinces is about 200 nGy/h,260 nGy/h and 300 nGy/h respectively.It is shown that the environmental activity level of bone-coal mining area is about 3 times higher than the reference spots.展开更多
基金Supported by State Environment Protection Bureau and Chinese Nuclear Industry Corporation (Project No.90201001)
文摘During 1991-1993,the activity levels of the bone-coal mines were investigated in Zhejiang,Hubei,Hunan,Jiangxi and Anhui Province,respectively,where the reserve of bone-coal is about 90% of our country’s total reserve.The average of γ radiation doserate level measured for bone-coal,bone-coal cinder(BCC) and bone-coal cinder brick(BCCB) in these provinces is about 500 nGy/h,400 nGy/h and 700 nGy/h respectively,while that for fields,roads and houses made of BCCB in corresponding regions of these provinces is about 200 nGy/h,260 nGy/h and 300 nGy/h respectively.It is shown that the environmental activity level of bone-coal mining area is about 3 times higher than the reference spots.
