By analysing the hydrogeological conditions of this region and the coal mines hereof, together with the water hazards troubled Shennan mine area in recent years, this paper summarized six types of mine water hazards. ...By analysing the hydrogeological conditions of this region and the coal mines hereof, together with the water hazards troubled Shennan mine area in recent years, this paper summarized six types of mine water hazards. As per the basic characteristics, geological distribution, threat degree and difficulty of prevention of various water hazards, along with the practice of water prevention in the mining area, this article proposed effective technical measures for the prevention and control of different water hazards and laid a solid foundation for the safe production in the mining area.展开更多
令H_n(x)是基于来自密度函数f(x)的容量为n的一个随机样本的hazard函数H(x)=f^(x)/[1-integral from x=∞ to x(f(t)dt)]的一个核形估计.对于非参数hazard估计的积分均方误差integral ((H_n(x)-H(x))~2ω(x)f(x)dx)中心极限定理成立的...令H_n(x)是基于来自密度函数f(x)的容量为n的一个随机样本的hazard函数H(x)=f^(x)/[1-integral from x=∞ to x(f(t)dt)]的一个核形估计.对于非参数hazard估计的积分均方误差integral ((H_n(x)-H(x))~2ω(x)f(x)dx)中心极限定理成立的一个充分条件被给出,这里ω(x)是一个权函数.展开更多
Seismologists have begun to investigate the earthquake damage and assess the economic losses on the spot in the Yunnan area since the earthquakes with M_S6.7 and M_S6.9 that occurred on the boundary between China and ...Seismologists have begun to investigate the earthquake damage and assess the economic losses on the spot in the Yunnan area since the earthquakes with M_S6.7 and M_S6.9 that occurred on the boundary between China and Myanmar west of Menglian county,Yunnan Province,on April 23,1992.From 1992 to 2003,50 destructive earthquakes occurred in Yunnan,and large amounts of data on seismic hazard have been accumulated.With focus on the major building structures,the paper makes statistical analysis on the earthquake damage ratio,loss ratio and seismic hazard index in the areas with different seismic intensity of the 50 events,and presents the seismic hazard matrix of buildings for the Yunnan area.展开更多
文摘By analysing the hydrogeological conditions of this region and the coal mines hereof, together with the water hazards troubled Shennan mine area in recent years, this paper summarized six types of mine water hazards. As per the basic characteristics, geological distribution, threat degree and difficulty of prevention of various water hazards, along with the practice of water prevention in the mining area, this article proposed effective technical measures for the prevention and control of different water hazards and laid a solid foundation for the safe production in the mining area.
文摘令H_n(x)是基于来自密度函数f(x)的容量为n的一个随机样本的hazard函数H(x)=f^(x)/[1-integral from x=∞ to x(f(t)dt)]的一个核形估计.对于非参数hazard估计的积分均方误差integral ((H_n(x)-H(x))~2ω(x)f(x)dx)中心极限定理成立的一个充分条件被给出,这里ω(x)是一个权函数.
基金This project was sponsored by the provincial tenth"Five-Year Plan"(Yunnan Provincial Plan2002-54-02-02),China
文摘Seismologists have begun to investigate the earthquake damage and assess the economic losses on the spot in the Yunnan area since the earthquakes with M_S6.7 and M_S6.9 that occurred on the boundary between China and Myanmar west of Menglian county,Yunnan Province,on April 23,1992.From 1992 to 2003,50 destructive earthquakes occurred in Yunnan,and large amounts of data on seismic hazard have been accumulated.With focus on the major building structures,the paper makes statistical analysis on the earthquake damage ratio,loss ratio and seismic hazard index in the areas with different seismic intensity of the 50 events,and presents the seismic hazard matrix of buildings for the Yunnan area.
