自发性膝关节骨坏死(spontaneous osteonecrosis of the knee,SONK)是原因不明的主要发生于股骨内侧髁负重面深层的局部骨坏死,也可发生于股骨外侧髁或胫骨平台。目前该病的病因及发病机制尚不明确,可能与软骨下骨微骨折以及局部血液...自发性膝关节骨坏死(spontaneous osteonecrosis of the knee,SONK)是原因不明的主要发生于股骨内侧髁负重面深层的局部骨坏死,也可发生于股骨外侧髁或胫骨平台。目前该病的病因及发病机制尚不明确,可能与软骨下骨微骨折以及局部血液循环障碍有关[1]。展开更多
The static earth pressure coefficient of soils is,approximately,considered to be a constant in the view of clas-sical soil mechanics. This is supported by many research results. The high pressure experimental research...The static earth pressure coefficient of soils is,approximately,considered to be a constant in the view of clas-sical soil mechanics. This is supported by many research results. The high pressure experimental research and analysis of remolding deep soil described herein indicate that the static earth pressure of thick overburden has a notable non lin-ear characteristic. It also appears larger than that of superficial soils. It is necessary for deep coal mine design and con-struction to consider this particularity of soil pressure so as to avoid engineering accidents and heavy loss of life and property.展开更多
基金Project 50534040 supported by the National Natrual Science Foundation of China
文摘The static earth pressure coefficient of soils is,approximately,considered to be a constant in the view of clas-sical soil mechanics. This is supported by many research results. The high pressure experimental research and analysis of remolding deep soil described herein indicate that the static earth pressure of thick overburden has a notable non lin-ear characteristic. It also appears larger than that of superficial soils. It is necessary for deep coal mine design and con-struction to consider this particularity of soil pressure so as to avoid engineering accidents and heavy loss of life and property.