Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for forming holes in underground karst cave geology by adopting rotary excavating drill matched with percussion drill
The invention discloses a construction method for forming holes in underground karst cave geology by adopting a rotary drill matched with a percussion drill, which comprises the following steps of: 1, firstly, determining which pile position has an extra-large karst cave or a multi-layer karst cave according to geological exploration data; after the pile position is determined, the rotary drilling rig is in place, the karst cave position is recorded in the drilling process, and the rotary drilling rig drills to the pile bottom design elevation; 2, the rotary drill is withdrawn after drilling to the designed pile bottom elevation, rubbles and viscous loess needing to be backfilled are prepared in time and conveyed to the position near the pile position for backfilling, and the original ground elevation is set through filling; and thirdly, after pile position backfilling, pile position lofting is conducted again, the pile casing is lowered, the construction method that the rotary drilling rig is matched with the percussion drill to form holes is adopted for the geology with the extra-large or multi-layer karst caves underground, the construction progress is accelerated, the construction safety is improved, the hole forming quality is improved, and the cost expenditure is reduced.
本发明公开了一种地下溶洞地质采用旋挖钻配套冲击钻成孔的施工工法，该地下溶洞地质采用旋挖钻配套冲击钻成孔的施工工法包括如下步骤：步骤一：首先根据地质勘探数据确定哪个桩位下存在特大溶洞或多层溶洞，确定桩位后旋挖钻机就位，钻进过程中记录溶洞位置，旋挖钻钻进至桩底设计高程；步骤二：旋挖钻钻进至设计桩底高程后撤出旋挖钻，及时将需要回填的片石和粘性黄土备好，运至桩位附近进行回填并填制原地面标高；步骤三：桩位回填后，重新进行桩位放样并下放护筒，该地下存在特大或多层溶洞地质采用旋挖钻配套冲击钻成孔的施工工法，提高施工进度、施工安全、成孔质量、成本支出。
Construction method for forming holes in underground karst cave geology by adopting rotary excavating drill matched with percussion drill
The invention discloses a construction method for forming holes in underground karst cave geology by adopting a rotary drill matched with a percussion drill, which comprises the following steps of: 1, firstly, determining which pile position has an extra-large karst cave or a multi-layer karst cave according to geological exploration data; after the pile position is determined, the rotary drilling rig is in place, the karst cave position is recorded in the drilling process, and the rotary drilling rig drills to the pile bottom design elevation; 2, the rotary drill is withdrawn after drilling to the designed pile bottom elevation, rubbles and viscous loess needing to be backfilled are prepared in time and conveyed to the position near the pile position for backfilling, and the original ground elevation is set through filling; and thirdly, after pile position backfilling, pile position lofting is conducted again, the pile casing is lowered, the construction method that the rotary drilling rig is matched with the percussion drill to form holes is adopted for the geology with the extra-large or multi-layer karst caves underground, the construction progress is accelerated, the construction safety is improved, the hole forming quality is improved, and the cost expenditure is reduced.
本发明公开了一种地下溶洞地质采用旋挖钻配套冲击钻成孔的施工工法，该地下溶洞地质采用旋挖钻配套冲击钻成孔的施工工法包括如下步骤：步骤一：首先根据地质勘探数据确定哪个桩位下存在特大溶洞或多层溶洞，确定桩位后旋挖钻机就位，钻进过程中记录溶洞位置，旋挖钻钻进至桩底设计高程；步骤二：旋挖钻钻进至设计桩底高程后撤出旋挖钻，及时将需要回填的片石和粘性黄土备好，运至桩位附近进行回填并填制原地面标高；步骤三：桩位回填后，重新进行桩位放样并下放护筒，该地下存在特大或多层溶洞地质采用旋挖钻配套冲击钻成孔的施工工法，提高施工进度、施工安全、成孔质量、成本支出。
Construction method for forming holes in underground karst cave geology by adopting rotary excavating drill matched with percussion drill
一种地下溶洞地质采用旋挖钻配套冲击钻成孔的施工工法
SHI FEI (Autor:in) / AI DONGSHENG (Autor:in) / WANG JIANHUI (Autor:in) / TIAN YUJIANG (Autor:in) / GAO WULONG (Autor:in) / CHEN YUE (Autor:in) / BAI LIANGLIANG (Autor:in) / SU GAOZHAN (Autor:in) / ZHANG HAO (Autor:in) / JIANG LELE (Autor:in)
04.08.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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