湖南文理学院学报（自然科学版）
湖南文理學院學報（自然科學版）
호남문이학원학보（자연과학판）
Journal of Hunan University of Arts and Science (Natural Science Edition)
2015年
4期
75-79
,共5页
陈洪林%吴卫%树新文
陳洪林%吳衛%樹新文
진홍림%오위%수신문
浅埋隧道%软弱围岩%极限分析上限法%围岩压力%破坏范围
淺埋隧道%軟弱圍巖%極限分析上限法%圍巖壓力%破壞範圍
천매수도%연약위암%겁한분석상한법%위암압력%파배범위
shallow tunnel%weak surrounding rock%upper bound theorem of limit analysis%earth pressure%failure scope
基于能量的角度，采用极限分析理论中的上限定理对软弱围岩下浅埋隧道的稳定性进行分析，得到了围岩压力的理论公式。研究表明：埋深、土体容重越大及黏聚力、内摩擦角越小，浅埋隧道的围岩压力越大，破坏范围也越大；当埋深较大、围岩较好时，浅埋隧道由于自稳能力有可能不会发生破坏，而对于比较差的围岩，在施工过程中应采取更为安全可靠的支护措施，以防止发生垮塌破坏。
基于能量的角度，採用極限分析理論中的上限定理對軟弱圍巖下淺埋隧道的穩定性進行分析，得到瞭圍巖壓力的理論公式。研究錶明：埋深、土體容重越大及黏聚力、內摩抆角越小，淺埋隧道的圍巖壓力越大，破壞範圍也越大；噹埋深較大、圍巖較好時，淺埋隧道由于自穩能力有可能不會髮生破壞，而對于比較差的圍巖，在施工過程中應採取更為安全可靠的支護措施，以防止髮生垮塌破壞。
기우능량적각도，채용겁한분석이론중적상한정리대연약위암하천매수도적은정성진행분석，득도료위암압력적이론공식。연구표명：매심、토체용중월대급점취력、내마찰각월소，천매수도적위암압력월대，파배범위야월대；당매심교대、위암교호시，천매수도유우자은능력유가능불회발생파배，이대우비교차적위암，재시공과정중응채취경위안전가고적지호조시，이방지발생과탑파배。
From the viewpoint of energy, the stability of shallow tunnel is analyzed based on the upper bound theorem of limit analysis. The expression of surrounding rock pressure and the position of failure surface are obtained by calculating. Result shows that the surrounding rock pressure and the region of the collapsing block increases with the increasing of buried depth and unit weight of soil mass, however it decreases with the increasing of cohesion and internal friction angle. Moreover, it can also be found that the tunnel with a higher buried depth and a better characteristic of surrounding rock mass is not easy to collapse. While a more reliable supporting measure should be taken in the excavating tunnel in poor surrounding rock so as to keep from collapsing.
