Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Simple method for forming hole and pile in sandy gravel stratum easy to collapse by using rotary drilling rig
The invention discloses a simple method for forming a hole and a pile in a sandy gravel stratum easy to collapse by using a rotary drilling rig. The simple method for forming the hole and the pile inthe sandy gravel stratum easy to collapse by using the rotary drilling rig comprises the following steps of (1) burying a hole opening pile casing; (2) drilling: drilling a hole in the pile casing; (3) continuing to drill in the pile hole for the depth of single drilling; (4) forming a wall protection layer in the pile hole: pouring blended mixed mud into the pile hole drilled once, and enabling arotary drilling rig bucket to rotate to extrude the mixed mud into sandy gravel gaps in the hole wall to form the wall protection layer; (5) repeating the steps (3) and (4) until the whole pile holeis completed, and taking out a drilling tool; and (6) hoisting a reinforcement cage into the pile hole, pouring concrete, and pulling out the hole opening pile casing after solidification. The simplemethod for forming the hole and the pile in the sandy gravel stratum easy to collapse by using the rotary drilling rig has the beneficial effects that a dense mud cake supporting system is formed by aconstruction method of backfilling the mixed mud in a drilled hole in a sandy gravel layer with relatively low underground water level, the arrangement of a mud pit is omitted, the discharged slurryis reduced, and meanwhile, the pile body concrete does not need an underwater guide pipe pouring process, the concrete pouring time is greatly shortened, and the concrete quality is also obviously improved.
一种旋挖钻机遇易塌砂卵石地层成孔成桩的简易方法，包括以下步骤：（1）埋设孔口护筒；（2）钻孔：在所述的护筒内钻孔；（3）在桩孔内继续钻进单次钻孔的深度；（4）在桩孔内形成护壁层：将调拌好混合泥料倒入单次钻孔的桩孔内，用旋挖钻机斗旋转将混合泥料挤压进入孔壁的砂卵石间隙形成护壁层；（5）重复步骤（3）‑（4），直至完成整个桩孔，提出钻具；（6）将钢筋笼吊入桩孔，灌注混凝土，凝固后起拔孔口护筒。有益效果是：在地下水位相对较低的砂卵石层中，钻孔中回填混合泥料的工法，形成密实的泥皮支护体系，省去了泥浆池的设置，减少了排浆液，同时桩身砼也不用水下导管灌注工艺，极大的缩短灌注砼时间，也明显提高了砼的质量。
Simple method for forming hole and pile in sandy gravel stratum easy to collapse by using rotary drilling rig
The invention discloses a simple method for forming a hole and a pile in a sandy gravel stratum easy to collapse by using a rotary drilling rig. The simple method for forming the hole and the pile inthe sandy gravel stratum easy to collapse by using the rotary drilling rig comprises the following steps of (1) burying a hole opening pile casing; (2) drilling: drilling a hole in the pile casing; (3) continuing to drill in the pile hole for the depth of single drilling; (4) forming a wall protection layer in the pile hole: pouring blended mixed mud into the pile hole drilled once, and enabling arotary drilling rig bucket to rotate to extrude the mixed mud into sandy gravel gaps in the hole wall to form the wall protection layer; (5) repeating the steps (3) and (4) until the whole pile holeis completed, and taking out a drilling tool; and (6) hoisting a reinforcement cage into the pile hole, pouring concrete, and pulling out the hole opening pile casing after solidification. The simplemethod for forming the hole and the pile in the sandy gravel stratum easy to collapse by using the rotary drilling rig has the beneficial effects that a dense mud cake supporting system is formed by aconstruction method of backfilling the mixed mud in a drilled hole in a sandy gravel layer with relatively low underground water level, the arrangement of a mud pit is omitted, the discharged slurryis reduced, and meanwhile, the pile body concrete does not need an underwater guide pipe pouring process, the concrete pouring time is greatly shortened, and the concrete quality is also obviously improved.
一种旋挖钻机遇易塌砂卵石地层成孔成桩的简易方法，包括以下步骤：（1）埋设孔口护筒；（2）钻孔：在所述的护筒内钻孔；（3）在桩孔内继续钻进单次钻孔的深度；（4）在桩孔内形成护壁层：将调拌好混合泥料倒入单次钻孔的桩孔内，用旋挖钻机斗旋转将混合泥料挤压进入孔壁的砂卵石间隙形成护壁层；（5）重复步骤（3）‑（4），直至完成整个桩孔，提出钻具；（6）将钢筋笼吊入桩孔，灌注混凝土，凝固后起拔孔口护筒。有益效果是：在地下水位相对较低的砂卵石层中，钻孔中回填混合泥料的工法，形成密实的泥皮支护体系，省去了泥浆池的设置，减少了排浆液，同时桩身砼也不用水下导管灌注工艺，极大的缩短灌注砼时间，也明显提高了砼的质量。
Simple method for forming hole and pile in sandy gravel stratum easy to collapse by using rotary drilling rig
旋挖钻机遇易塌砂卵石地层成孔成桩的简易方法
HE SHIMING (Autor:in) / LIU YUCHENG (Autor:in) / LI JIANG (Autor:in) / GUO DANGSHENG (Autor:in) / ZHOU YUCHENG (Autor:in) / ZHANG BAOHE (Autor:in) / YU HEKUN (Autor:in) / CHEN HUI (Autor:in) / HUANG XINFENG (Autor:in) / JIA CHENG (Autor:in)
29.12.2020
Patent
Elektronische Ressource
Chinesisch
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