Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Open caisson sinking construction method under hard rock geological condition
The open caisson sinking construction method under the hard rock geological condition comprises the steps that S1, a ground site is leveled to enable the site to meet the construction requirement of a rotary drilling rig, S2, the positions of the inner wall and the outer wall of an open caisson are positioned according to a design drawing, guide hole arrangement is designed in a quincunx shape, and marking is conducted; the drilling sequence is that the outer ring is drilled first and then the inner ring is drilled, and S4, after each drilling is completed, gravel muck is immediately adopted for backfilling, hole collapse or hole punching is prevented, and the influence on subsequent drilling construction is reduced. And S5, after backfilling of all the drill holes is completed, subsequent open caisson manufacturing and construction are conducted in a tunneling sinking mode. The rotary drilling rig is adopted to crush the hard rock structure before open caisson construction, the follow-up open caisson tunneling sinking difficulty is reduced, the open caisson sinking speed is increased, control over the amount of excavated soil below the blade angle is facilitated, the probability that the open caisson inclines is reduced, and the hard rock stratum open caisson construction period is shortened to a great extent.
本发明公开了一种硬岩地质情况下沉井下沉施工方法，S1：地场地进行平整，使场地满足旋挖钻机施工要求，S2：按照设计图纸，定位沉井内、外壁位置，采用梅花形设计引孔布置，并进行标注，步骤S3：运用旋挖钻采用跳孔法进行孔，钻孔顺序按照先外圈后内圈，步骤S4：每完成一个钻孔后立即采用碎石渣土进行回填，防止塌孔或穿孔，并减少对后续钻孔施工的影响。S5：所有钻孔回填完成之后按照在按照掘进下沉的方式进行后续沉井制作与施工。本发明通过在沉井施工之前采用旋挖钻机破碎硬岩结构，减小后续沉井掘进下沉难度，加快沉井下沉速度，并且方便了刃角下方掘土量控制，减少沉井发生倾斜的几率，很大程度的缩短硬岩地层沉井施工工期。
Open caisson sinking construction method under hard rock geological condition
The open caisson sinking construction method under the hard rock geological condition comprises the steps that S1, a ground site is leveled to enable the site to meet the construction requirement of a rotary drilling rig, S2, the positions of the inner wall and the outer wall of an open caisson are positioned according to a design drawing, guide hole arrangement is designed in a quincunx shape, and marking is conducted; the drilling sequence is that the outer ring is drilled first and then the inner ring is drilled, and S4, after each drilling is completed, gravel muck is immediately adopted for backfilling, hole collapse or hole punching is prevented, and the influence on subsequent drilling construction is reduced. And S5, after backfilling of all the drill holes is completed, subsequent open caisson manufacturing and construction are conducted in a tunneling sinking mode. The rotary drilling rig is adopted to crush the hard rock structure before open caisson construction, the follow-up open caisson tunneling sinking difficulty is reduced, the open caisson sinking speed is increased, control over the amount of excavated soil below the blade angle is facilitated, the probability that the open caisson inclines is reduced, and the hard rock stratum open caisson construction period is shortened to a great extent.
本发明公开了一种硬岩地质情况下沉井下沉施工方法，S1：地场地进行平整，使场地满足旋挖钻机施工要求，S2：按照设计图纸，定位沉井内、外壁位置，采用梅花形设计引孔布置，并进行标注，步骤S3：运用旋挖钻采用跳孔法进行孔，钻孔顺序按照先外圈后内圈，步骤S4：每完成一个钻孔后立即采用碎石渣土进行回填，防止塌孔或穿孔，并减少对后续钻孔施工的影响。S5：所有钻孔回填完成之后按照在按照掘进下沉的方式进行后续沉井制作与施工。本发明通过在沉井施工之前采用旋挖钻机破碎硬岩结构，减小后续沉井掘进下沉难度，加快沉井下沉速度，并且方便了刃角下方掘土量控制，减少沉井发生倾斜的几率，很大程度的缩短硬岩地层沉井施工工期。
Open caisson sinking construction method under hard rock geological condition
一种硬岩地质情况下沉井下沉施工方法
FENG HAO (Autor:in) / LI JING (Autor:in) / QIU BOCHAO (Autor:in) / WANG FENGLIN (Autor:in) / XIONG HUAN (Autor:in) / LIANG CHENGLONG (Autor:in) / WANG LIAN (Autor:in) / SU LULU (Autor:in) / YANG XIN (Autor:in) / BAI YANGYANG (Autor:in)
16.12.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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