科技与创新
科技與創新
과기여창신
Science and Technology & Innovation
2014年
17期
131-131,135
,共2页
普氏理论%地层%洞室围岩%压力
普氏理論%地層%洞室圍巖%壓力
보씨이론%지층%동실위암%압력
Platts Theory%formation%surrounding rockmass%pressure
地下开挖对周围地层的力学作用强度是随着距离的变化而逐渐衰减的。深埋隧道上覆地层变形、松动、坍塌的过程会在地表以下某个相对稳定的范围内终止，就好像坍塌范围的周边出现了能够承受上覆岩层的“压力拱结构”一样，这种现象被称为地层的成拱作用。此时，拱下坍落的重量决定了顶部的压力。利用普氏理论求解塌落围岩压力。
地下開挖對週圍地層的力學作用彊度是隨著距離的變化而逐漸衰減的。深埋隧道上覆地層變形、鬆動、坍塌的過程會在地錶以下某箇相對穩定的範圍內終止，就好像坍塌範圍的週邊齣現瞭能夠承受上覆巖層的“壓力拱結構”一樣，這種現象被稱為地層的成拱作用。此時，拱下坍落的重量決定瞭頂部的壓力。利用普氏理論求解塌落圍巖壓力。
지하개알대주위지층적역학작용강도시수착거리적변화이축점쇠감적。심매수도상복지층변형、송동、담탑적과정회재지표이하모개상대은정적범위내종지，취호상담탑범위적주변출현료능구승수상복암층적“압력공결구”일양，저충현상피칭위지층적성공작용。차시，공하담락적중량결정료정부적압력。이용보씨이론구해탑락위암압력。
The underground excavation on the surrounding strata mechanics strength is changing with distance decay gradually. Deep buried tunnel deformation in the overlying strata, loose, collapse process will be below the surface of a relatively stable range is terminated, as if the collapse of its neighboring appeared to withstand the pressure arch structure of overlying strata, this phenomenon is called the formation of arching effect. At this point, determines the weight of the slump under the arch at the top of the pressure. Using the Platts Theory solute cave surrounding rock pressure.
