摘要
现代山崩滑坡和地裂陷,是渭河盆地极其严重的山地灾害之一。从公元前730年至1(?)85年的两千七百年间,渭河盆地有文字记载的大型灾害性山崩滑坡和地裂陷,发生过90余次,其中山崩滑坡灾害出现50余起,地裂陷灾害出现40余起;仅西安地区山崩滑坡和地裂陷灾害就出现30起:在空间分布上,它们主要受盆地内部东西向、北西西向、北北东向三组活动断裂控制;在时间序列上,它们具有明显的周期性活动,其周期序列与天象、气象、地象中的某些周期相同.并且与行呈运动、太阳活动等天文因素有关。
Modern collapse-landslide and ground subsidence are very serious hazards in Weihe basin.The predominent catastrophic collapse-landslide and subsidence occured for more than 90 times during 2,700 years, rangingfrom 780 BC to 1985 AD. Among them, collapse-landslide events occured for about 50 times and subsidence events for about 40 times, only in Xi'an region 30 typical catastrophic events occured. The distribuion of them in space are controlled predominently by active faults,which located the margin of the mountain or hidden at great depths of Quaternary sediments of the interior of the basin. Collapse-landslide distributes in the W-E and NWW strending faults and subsidence in the W-E and strending faults. In time sequence, they are characterized by the remarkable periodic activity. The period is composed of the calm and the brisk periods, The collapse-landslide's calm period is 241 years and its brisk period has two types, i. e.,the long period for 80 years and the short for 16 years; the subsidence's calm period has three types, i.e.,the long period for 548 years, the middle period for 153 years and the short period for 37,21 and 12.5 years respectively as well as its brisk period for 89 years and double 187 years. Thus, the total period of collapse-landslide is ranging from 257 to 320 years and the total period of subsidence has two types,i.e.,735 years and 242 years. Above mentioned periods form a integrated period sequences together and corresponding to the some periods of astronomical phenomena, meteoric phenomena and geophenomena, which probably suggest that there is a striking correlation between the occurrence of mountain hazards and planet motion, sunspot activity et al.
出处
《水土保持学报》
CSCD
北大核心
1989年第3期71-83,共13页
Journal of Soil and Water Conservation
