以大型岩土工程数值分析软件(ADINA)为研究手段,基于卸荷岩体力学的理论和方法,对某电站深孔泄洪洞进口边坡进行了开挖卸荷分析。基于此,重点分析不同加固角度对边坡的加固效果,同时也分析了不同锚固力作用下边坡的加固效果,结果表明:...以大型岩土工程数值分析软件(ADINA)为研究手段,基于卸荷岩体力学的理论和方法,对某电站深孔泄洪洞进口边坡进行了开挖卸荷分析。基于此,重点分析不同加固角度对边坡的加固效果,同时也分析了不同锚固力作用下边坡的加固效果,结果表明:加固角度为俯角20°时效果最优;锚固力越大,边坡变形越小。考虑到成本控制,采用2 000 k N的预应力锚索。再者,开挖边坡直立坡段处修建有弧形闸门用于泄水,故着重分析此处的加固方案,以保证闸门的正常运行,结果显示锚固力对加固效果有直接影响。研究成果对设计采用锚索加固的高陡边坡工程具有一定的借鉴作用。展开更多
We study the entanglement between the internal(coin)and the external(position)degrees of freedom in the dynamic and the static deterministic aperiodic quantum walks(QWs).For the dynamic(static)aperiodic QWs,the coin d...We study the entanglement between the internal(coin)and the external(position)degrees of freedom in the dynamic and the static deterministic aperiodic quantum walks(QWs).For the dynamic(static)aperiodic QWs,the coin depends on the time(position)and takes two coins C(α)and C(β)arranged in the two classes of generalized Fibonacci(GF)and the Thue–Morse(TM)sequences.We found that for the dynamic QWs,the entanglement of three kinds of the aperiodic QWs are close to the maximal value,which are all much larger than that of the homogeneous QWs.Further,the first class of GF(1st GF)QWs can achieve the maximum entangled state,which is similar to that of the dynamic disordered QWs.And the entanglement of 1st GF QWs is greater than that of the TM QWs,being followed closely by the entanglement of the second class of GF(2nd GF)QWs.For the static QWs,the entanglement of three kinds of the aperiodic QWs are also close to the maximal value and 1st GF QWs can achieve the maximum entangled state.The entanglement of the TM QWs is between1st GF QWs and 2nd GF QWs.However,the entanglement of the static disordered QWs is less than that of three kinds of the aperiodic QWs.This is different from those of the dynamic QWs.From these results,we can conclude that the dynamic and static 1st GF QWs can also be considered as maximal entanglement generators.展开更多
The dynamical and static disordered quantum walks were extensively studied recently. It is found that, for the dynamicM disorder case, the transport behavior of particles is diffusive, and for the static disorder ease...The dynamical and static disordered quantum walks were extensively studied recently. It is found that, for the dynamicM disorder case, the transport behavior of particles is diffusive, and for the static disorder ease the transport behavior is localized. In this work, we study the effect of quantum coins on the transport behaviors of the binary disordered quantum walks. We lind that once the coins satisfy certain conditions, the sub-ballistic spreading could be found in binary dynamical disorder quantum walks, and the sub-ballistic, diffusive and sub- diffusive spreadings could be found in binary static disorder quantum walks. We obtain the necessary conditions for those abnormal diffusive behaviors.展开更多
文摘以大型岩土工程数值分析软件(ADINA)为研究手段,基于卸荷岩体力学的理论和方法,对某电站深孔泄洪洞进口边坡进行了开挖卸荷分析。基于此,重点分析不同加固角度对边坡的加固效果,同时也分析了不同锚固力作用下边坡的加固效果,结果表明:加固角度为俯角20°时效果最优;锚固力越大,边坡变形越小。考虑到成本控制,采用2 000 k N的预应力锚索。再者,开挖边坡直立坡段处修建有弧形闸门用于泄水,故着重分析此处的加固方案,以保证闸门的正常运行,结果显示锚固力对加固效果有直接影响。研究成果对设计采用锚索加固的高陡边坡工程具有一定的借鉴作用。
基金Project supported by the National Natural Science Foundation of China(Grant Nos.11575087 and 11175087)
文摘We study the entanglement between the internal(coin)and the external(position)degrees of freedom in the dynamic and the static deterministic aperiodic quantum walks(QWs).For the dynamic(static)aperiodic QWs,the coin depends on the time(position)and takes two coins C(α)and C(β)arranged in the two classes of generalized Fibonacci(GF)and the Thue–Morse(TM)sequences.We found that for the dynamic QWs,the entanglement of three kinds of the aperiodic QWs are close to the maximal value,which are all much larger than that of the homogeneous QWs.Further,the first class of GF(1st GF)QWs can achieve the maximum entangled state,which is similar to that of the dynamic disordered QWs.And the entanglement of 1st GF QWs is greater than that of the TM QWs,being followed closely by the entanglement of the second class of GF(2nd GF)QWs.For the static QWs,the entanglement of three kinds of the aperiodic QWs are also close to the maximal value and 1st GF QWs can achieve the maximum entangled state.The entanglement of the TM QWs is between1st GF QWs and 2nd GF QWs.However,the entanglement of the static disordered QWs is less than that of three kinds of the aperiodic QWs.This is different from those of the dynamic QWs.From these results,we can conclude that the dynamic and static 1st GF QWs can also be considered as maximal entanglement generators.
基金Supported by the National Natural Science Foundation of China under Grant No 11175087the National Basic Research Program of China under Grant No 2009CB929501the Project on Graduate Students’Education and Innovation of Jiangsu Province under Grant No CXZZ13_0392
文摘The dynamical and static disordered quantum walks were extensively studied recently. It is found that, for the dynamicM disorder case, the transport behavior of particles is diffusive, and for the static disorder ease the transport behavior is localized. In this work, we study the effect of quantum coins on the transport behaviors of the binary disordered quantum walks. We lind that once the coins satisfy certain conditions, the sub-ballistic spreading could be found in binary dynamical disorder quantum walks, and the sub-ballistic, diffusive and sub- diffusive spreadings could be found in binary static disorder quantum walks. We obtain the necessary conditions for those abnormal diffusive behaviors.
