遥感在皂市水库环境工程地质研究中的应用

Application of remote sensing technique to environmental and geologic investigation of Zaoshi project

利用遥感技术,针对湖南澧水支流渫水皂市水库坝区区域地质和为库区的物理地质现象,对具有多级遥感平台、不同波段和不同比例尺的1973年的 Landsat Mss 宜昌幅卫星像片和1987年的1:33000黑白航空像片进行解译。结果表明:皂市坝址区及外围地壳稳定性好;库区发育的物理地质现象大多处于稳定状态,仅少数尚在发展过程中,且分布于库尾;皂市水库库岸条件良好,全长104公里的库岸,稳定、较稳定及不稳定的库岸分别占95.7%、2.7%和1.6%;蓄水对库岸及地壳稳定性影响很小。

By means of the remote sensing technique.the 1973 Candsat MSS satellite photograph ofYichang block(with multi—step remote sensing platforms and different bands and scales)and aeroplanephotograph of 1:33000 scale have been interpreted for defining dam site and reservoir area regional geol-ogy and physical geologic phenomena of the Zaoshi project.located on the Xie river.a tributary of theLishui river in Hunan province.The interpretation indicates that the earth's crust in dam site and its pe-riphery has long—term stability;most physical geologic phenomena developed in the reservoir area are instable state.with only a few ones,at the uppermost end of the reservoir,in process of eonlinuous devel-opment;the reservoir bank length of 104 km is in general stable,with unstable reservoir band lengthamounting 1.6% of the total length;and the reservoir impoundment will have little impact on stability(?)