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A platform for research: civil engineering, architecture and urbanism
Drilling pile-forming method for inclined rock surface pile in reclamation area
The invention provides a drilling and pile-forming method for an inclined rock surface pile in a reclamation area. The drilling and pile-forming method comprises the following steps that a sleeve matched with a cast-in-place pile is placed, and a full-sleeve full-slewing drilling machine is placed in place; rotating and pressing the sleeve through a full-sleeve full-slewing drilling machine, taking out soil and stone in the sleeve, and forming a hole in a soil layer section; a pipe twisting drilling machine is hoisted into the position of an orifice sleeve in place, and an RCD drilling machine is hoisted into the top of the sleeve in place; when the RCD drilling machine breaks the inclined rock, the pipe twisting machine continues to cooperate to sink the sleeve until the sleeve sinks and is embedded into the complete hard rock; the RCD drilling machine conducts full-section rock breaking drilling and deslagging; and the pile body is subjected to concrete pouring. According to the method, a full-casing full-slewing drilling machine is adopted for lowering the casing to the inclined rock surface, and hole collapse and hole shrinkage of an upper poor stratum are avoided; meanwhile, the perpendicularity of formed holes is ensured; the casing pipe is embedded into the middle-weathered rock by matching the pipe twisting machine with the RCD drilling machine on the inclined rock surface, so that construction accidents such as drill burying and failure in footage caused by sand and mud gushing into the casing pipe from the inclined rock surface are avoided.
本发明提供了一种填海区斜岩面桩钻进成桩方法，包括以下步骤：安放与灌注桩相适配的套管，全套管全回转钻机就位；通过全套管全回转钻机使套管回转下压并取出套管内土石，土层段成孔；在孔口套管位置吊入搓管钻机就位，并在套管顶部吊入RCD钻机就位；在RCD钻机斜岩破除的同时，搓管机继续配合下沉套管，直至将套管下沉嵌入完整硬岩内；RCD钻机全断面破岩钻进并进行排渣；桩身进行混凝土灌注。本发明采用全套管全回转钻机将套管下至斜岩面，避免了上部不良地层的塌孔、缩径；同时，确保了成孔的垂直度；在斜岩面采用搓管机与RCD钻机配合将套管嵌入中风化岩内，避免了从斜岩面处向套管内涌砂、涌泥而造成埋钻、无法进尺等施工事故。
Drilling pile-forming method for inclined rock surface pile in reclamation area
The invention provides a drilling and pile-forming method for an inclined rock surface pile in a reclamation area. The drilling and pile-forming method comprises the following steps that a sleeve matched with a cast-in-place pile is placed, and a full-sleeve full-slewing drilling machine is placed in place; rotating and pressing the sleeve through a full-sleeve full-slewing drilling machine, taking out soil and stone in the sleeve, and forming a hole in a soil layer section; a pipe twisting drilling machine is hoisted into the position of an orifice sleeve in place, and an RCD drilling machine is hoisted into the top of the sleeve in place; when the RCD drilling machine breaks the inclined rock, the pipe twisting machine continues to cooperate to sink the sleeve until the sleeve sinks and is embedded into the complete hard rock; the RCD drilling machine conducts full-section rock breaking drilling and deslagging; and the pile body is subjected to concrete pouring. According to the method, a full-casing full-slewing drilling machine is adopted for lowering the casing to the inclined rock surface, and hole collapse and hole shrinkage of an upper poor stratum are avoided; meanwhile, the perpendicularity of formed holes is ensured; the casing pipe is embedded into the middle-weathered rock by matching the pipe twisting machine with the RCD drilling machine on the inclined rock surface, so that construction accidents such as drill burying and failure in footage caused by sand and mud gushing into the casing pipe from the inclined rock surface are avoided.
本发明提供了一种填海区斜岩面桩钻进成桩方法，包括以下步骤：安放与灌注桩相适配的套管，全套管全回转钻机就位；通过全套管全回转钻机使套管回转下压并取出套管内土石，土层段成孔；在孔口套管位置吊入搓管钻机就位，并在套管顶部吊入RCD钻机就位；在RCD钻机斜岩破除的同时，搓管机继续配合下沉套管，直至将套管下沉嵌入完整硬岩内；RCD钻机全断面破岩钻进并进行排渣；桩身进行混凝土灌注。本发明采用全套管全回转钻机将套管下至斜岩面，避免了上部不良地层的塌孔、缩径；同时，确保了成孔的垂直度；在斜岩面采用搓管机与RCD钻机配合将套管嵌入中风化岩内，避免了从斜岩面处向套管内涌砂、涌泥而造成埋钻、无法进尺等施工事故。
Drilling pile-forming method for inclined rock surface pile in reclamation area
一种填海区斜岩面桩钻进成桩方法
LI CHAO (author) / TANG WENPING (author) / LEI BIN (author) / ZENG JIHONG (author) / WEI CHUIYONG (author) / WANG ZHIQUAN (author) / TANG FANGWEN (author) / TONG XIN (author) / ZHANG ZHIYONG (author) / CHEN LIEJUN (author)
2024-09-20
Patent
Electronic Resource
Chinese
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