摘要
新构造应力场对地震形成机制、滑坡、水陆交通规划和水利工程布置都有重要的实用意义。本文根据沙氏法(A.E.Scheidegger)对滦河尤其是中下游水系格局进行了统计分析,并和土层节理、地震裂缝、地震断层面解等得出的区域构造应力场相互验证,从而得出了唐山近区的新构造应力场:最大压应力轴P_1=70°～80° P_2=50°最大张应力轴T_1=340°
Neotectonic stress field is practically significant for mechanism of earthquake formation, landslide; water-land communication plans and irrigation works layout. According to A.E. Scheidegger's method, this paper statistically analyses the layout of river system of the middle-lower reaches of Luanhe river especially. Based on joints of earth-layer, earthquake fissure and fault plane solution, the regional stress field is obtained. The field and the analysed result check each other, which speculates upon the neotectonic stress field in adjacent areas near Tangshan.Maximum principal compressive stress axes. P1=70°-80°, P2 = 50°: Maximum Principal tensile stress axes; T1=340°, T2 = 320°
出处
《地震研究》
CSCD
北大核心
1989年第1期37-42,共6页
Journal of Seismological Research
关键词
水系
构造
应力场
土层节理
Neotectonic stress field, River system of Luanhe River, Joint of earth layer, Neotectonic stress field in adjacent areas near Tangshan
