摘要
本文根据长春市新构造特征,尤其是活动断裂带的强烈活动性和比较复杂的地震地质背景资料重点探讨本区可能发生的地震灾害,新立城水库溃坝引起的洪水灾害及地面塌陷灾害,圈定地震灾害的烈度区划、洪水灾害和地面塌陷灾害的范围,在此基础上进一步提出尽可能避免或减轻地质灾害的有力措施。这对于长春市城市规划、国民经济建设、工程地质等方面,有着重要的理论和实际意义。
There are probably three kinds of geological catastrophe in this area. 1) Earthquake calamity: The geological setting of earthquake in Changchun city and its vicinity is more complicated,and there is a condition of gathering and release of stress. The potential of destrustive earthquake(M=5.0—6.0)is possible.The first disastrous areas are the South Lake faulted zone in the urban district, the Sijianfang and the Kaiyuanpu faulted zones in the suburb and the vicinity of these faulted zones. 2) Flood calamity: The active fractures are distributed along the Xinlicheng reservoir. During the activity of these faults especially with the destructive earthquake, it is easy to cause collapse of the darn and serious flood.The disastrous area is the alluvial plain along the bank of the Yitong river including the Erdaohezi district in Changchun city.The area of this plain is 40 km long from south to north and 5 km wide, with a total area of 200km^2. 3) Surface subsidence: The mining-hollow area in the Shibeiling coal mine may be the source of this calamity, but in a short period of time it is not enough to result in serious surface collapse.
出处
《吉林地质》
1990年第4期62-67,共6页
Jilin Geology
关键词
地质灾害
灾害
地震
洪水
长春市
Earthquake calamity Flood calamity Earthquake intensity Activity Changchun
