富蕴地震断裂带的若干定量特征

SOME QUANTITATIVE CHARACTERISTICS OF FUYUN SEISMIC FAULT ZONE

对富蕴地震断裂带 9处不同地段的平板地质测量结果表明 :北部引张段地震断裂带宽约2 2 0 m,断坎平均高 0 .4 m;中部主体走滑段地震断层长达 535m以上 ,断层水平位移为 1.8～ 7.8m,断坎高 0 .4～ 1.2 m,水平位移与垂直位移之比为 5.7～ 8.7;南部末端破裂段地震抛掷巨石距离达 4 0 m,地震断层水平位移为 0 .4～ 9.9m,断坎平均高 0 .2 m,末端及副断层水平位移与垂直位移之比高达 2 5～ 2 8。

The geological surveying was made with plane table at 9 different sections along Fuyun seismic fault zone,and the result shows:In north part of the seismic fault zone,tension section is as wide as 220 m;the height of fault scarps averages 0.4 m.In middle part of the zone,the main body of strike slip section is as long as above 535 m;the horizontal displacement is 1.8~7.8 m;the height of the fault scarps is 0.4~1.2 m,and the ratio of horizontal displacement to vertical displacement is 5.7~8.7.In rupture section,south end of the zone,the biggest distance that huge stones were thrown out amounts to 40 m;the horizontal displacement of the seismic fault is 0.4~9.9 m;the height of fault scarps averages 0.2 m;and the ratio of horizontal displacement at the end and branch fault to the vertical displacement is as much as 25~28.