WO2022017541A1 - 一种在土层夹石块地质条件下基坑支护的方法 - Google Patents
一种在土层夹石块地质条件下基坑支护的方法 Download PDFInfo
- Publication number
- WO2022017541A1 WO2022017541A1 PCT/CN2021/113859 CN2021113859W WO2022017541A1 WO 2022017541 A1 WO2022017541 A1 WO 2022017541A1 CN 2021113859 W CN2021113859 W CN 2021113859W WO 2022017541 A1 WO2022017541 A1 WO 2022017541A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stones
- soil layer
- foundation pit
- geological condition
- retaining
- Prior art date
Links
- 239000004575 stone Substances 0.000 title claims abstract description 37
- 239000002689 soil Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000009412 basement excavation Methods 0.000 title claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- 238000005553 drilling Methods 0.000 claims abstract description 13
- 239000011435 rock Substances 0.000 claims description 10
- 239000004568 cement Substances 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 8
- 238000003780 insertion Methods 0.000 abstract 2
- 230000037431 insertion Effects 0.000 abstract 2
- 238000004904 shortening Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 230000002441 reversible effect Effects 0.000 description 3
- 238000005422 blasting Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
Definitions
- the invention relates to a method for supporting a foundation pit under the geological condition of rock sandwiched in a soil layer.
- foundation pit support structures are widely used, including I-beam pile support, Larsen steel sheet pile support, and cement mixing pile support.
- I-beam pile support In the geological conditions where there are many large stones in the soil layer, the pile head of I-beam, Larsen pile or cement mixing pile cannot penetrate the stones. Blasting or crushing, over-excavation and replacement of filling and then driving of supporting piles, and then reverse grooving construction will not only cause a sharp increase in project investment and prolong construction period, but also easily cause safety accidents and affect surrounding roads or houses.
- the technical problem to be solved by the present invention is to provide a method for foundation pit support under the geological conditions of the soil layer with stones, which is used to solve the problem that the existing foundation pit support cannot penetrate the stones under the geological conditions of the stones in the soil layer. , only blasting or crushing the stones, over excavating and replacing the filling, driving the supporting piles, and then reverse grooving construction, resulting in a sharp increase in project investment, prolonged construction period and impact on surrounding roads or houses.
- a method for foundation pit support under the geological condition of rock sandwiched in soil layer comprising the following steps:
- the drilling machine processes the stones along the boundary of the foundation pit support
- the supporting structure includes a protective pipe, the protective pipe passes through a drilled hole, an I-beam is arranged in the protective pipe, and cement slurry is filled between the I-beam and the protective pipe.
- the drilling machine first drills a plurality of large holes in the soil layer above the stones, then inserts the protective pipes into the plurality of large holes, and then drills small holes on the stones through the protective pipes , and then insert the hydraulic splitting machine into the small hole, and use the hydraulic splitting machine to split the stone into a crack.
- the supporting structure includes a plurality of plug-in boards and a connection board, and the two sides of the connection board are provided with card slots corresponding to the plug-in boards.
- the plate is inserted into the crack between the two adjacent protective pipes, and then the hydraulic splitter and the protective pipe are removed, and the connecting plate is inserted into the gap between the inserting plates.
- the project cost is low and the construction period is short. Using this method of foundation pit support, the project cost is reduced by at least 40% compared with the over-excavation, replacement, filling and reverse grooving process, and multiple working faces can be started at the same time, saving construction period and causing no pollution to the environment.
- the spacing of the support structure can be adjusted according to the depth of the foundation pit, with strong adaptability.
- Fig. 1 is the top view structure schematic diagram of embodiment 1,
- Fig. 2 is the front view structure schematic diagram of embodiment 1,
- Fig. 3 is the top view structure schematic diagram of embodiment 2
- Fig. 4 is the front view partial sectional structure schematic diagram of Embodiment 2
- FIG. 5 is a schematic diagram of a partial cross-sectional structure of Embodiment 2
- FIG. 6 is a partial top-view structural schematic diagram of Embodiment 2.
- FIG. 6 is a partial top-view structural schematic diagram of Embodiment 2.
- a method for foundation pit support under the geological condition of rock sandwiched in soil layer comprising the following steps:
- the drilling machine processes the stones 5 along the boundary of the foundation pit support
- the supporting structure composed of the PE protective pipe 2 and the I-beam 3 can be used.
- the drilling machine drills through the stone block 5, and then drills through the stone block 5.
- Apply lubricating oil to the inner wall of the protective pipe 2 insert the protective pipe 2 into the drilled hole, place the I-beam 3 in the drilled hole, and fill the cement slurry between the I-beam 3 and the protective pipe 2.
- Excavate the earthwork or stonework about 50cm on the surface of the soil layer install the steel purlin 4 and drive the steel sheet pile 1.
- the supporting structure composed of multiple insert plates 7, connecting plates 6 and steel protection pipes 2 can be used.
- the drilling machine first drills a large hole in the soil layer above the stone block 5, inserts the steel protective pipe 2 into the large hole, then drills a small hole on the stone block 5, and then inserts the hydraulic splitter 8 into the large hole.
- a plurality of hydraulic splitting machines 8 are used to split the stone 5 into a crack with a width of 2-3 cm, and the pile driver first inserts each plug board 7 into the crack between the two adjacent protective pipes 2.
- the pile driver will drive the steel sheet pile 1 and install the steel purlin 4 to complete the installation of the support around the foundation pit.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Earth Drilling (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
Description
Claims (5)
- 一种在土层夹石块地质条件下基坑支护的方法,其特征在于,包括如下步骤:S1,地质勘探,确定基坑开挖路径上石块(5)的位置;S2,对基坑边界测量和定位;S3,钻孔机沿着基坑支护的边界对石块(5)进行处理;S4,在钻孔设置支护结构后,开挖表层土方、安装钢围檩(4)和打入钢板桩(1)。
- 根据权利要求1所述的一种在土层夹石块地质条件下基坑支护的方法,其特征在于,在进行上述S3步骤时,钻孔要求穿过石块(5)。
- 根据权利要求2所述的一种在土层夹石块地质条件下基坑支护的方法,其特征在于,所述支护结构包括护管(2),护管(2)穿过钻孔,在护管(2)内设有工字钢(3),工字钢(3)和护管(2)之间填充有水泥浆。
- 根据权利要求1所述的一种在土层夹石块地质条件下基坑支护的方法,其特征在于,在进行上述S3步骤时,钻孔机先在石块(5)上方土层钻取多个大孔后,将护管(2)分别插入到多个大孔内,而后穿过护管(2)在石块(5)上钻取小孔,接着将液压劈裂机(8)插入到小孔内,利用液压劈裂机(8)将石块(5)劈出一条裂缝。
- 根据权利要求4所述的一种在土层夹石块地质条件下基坑支护的方法,其特征在于,所述支护结构包括多块插板(7)和接板(6),接板(6)两侧设有与插板(7)相对应的卡槽,在液压劈裂机(8)将石块(5)劈出一条裂缝后,打桩机先将各块插板(7)插入到相邻两个护管(2)之间裂缝中,而后拆除液压劈裂机(8)和护管(2),将接板(6)插入到插板(7)之间缝隙。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112021000151.5T DE112021000151B4 (de) | 2020-11-20 | 2021-08-20 | Verfahren zur Unterstützung der Baugrube unter der geologischen Bedingung der mit Steinblöcken gemischten Bodenschicht |
GB2207292.0A GB2605291B (en) | 2020-11-20 | 2021-08-20 | Method for retaining and protection of foundation excavations under geological condition of soil layer containing stones |
JP2022528579A JP7381747B2 (ja) | 2020-11-20 | 2021-08-20 | 土層に石が混在した地質条件での基礎ピット支保方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011311018.5A CN112442991B (zh) | 2020-11-20 | 2020-11-20 | 一种在土层夹石块地质条件下基坑支护的方法 |
CN202011311018.5 | 2020-11-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022017541A1 true WO2022017541A1 (zh) | 2022-01-27 |
Family
ID=74737115
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2021/113859 WO2022017541A1 (zh) | 2020-11-20 | 2021-08-20 | 一种在土层夹石块地质条件下基坑支护的方法 |
Country Status (5)
Country | Link |
---|---|
JP (1) | JP7381747B2 (zh) |
CN (1) | CN112442991B (zh) |
DE (1) | DE112021000151B4 (zh) |
GB (1) | GB2605291B (zh) |
WO (1) | WO2022017541A1 (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114837088A (zh) * | 2022-04-27 | 2022-08-02 | 中国建筑第七工程局有限公司 | 一种公路上承台的施工方法 |
CN115369888A (zh) * | 2022-08-31 | 2022-11-22 | 中交一公局集团有限公司 | 一种深水裸岩基坑成型方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112442991B (zh) * | 2020-11-20 | 2021-09-07 | 中国长江三峡集团有限公司 | 一种在土层夹石块地质条件下基坑支护的方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08253930A (ja) * | 1995-03-17 | 1996-10-01 | Fujita Corp | 逆打工法における中間杭の補強方法 |
JPH09158197A (ja) * | 1995-12-12 | 1997-06-17 | Kajima Corp | ニューマチックケーソン工法における岩盤掘削方法 |
CN101985836A (zh) * | 2010-09-10 | 2011-03-16 | 广东省基础工程公司 | 一种桩、墙式深基坑支护结构遇大块孤石的处理方法 |
CN109989405A (zh) * | 2017-12-30 | 2019-07-09 | 广州协安建设工程有限公司 | 孤石场地条件下基坑支护施工方法 |
CN110424434A (zh) * | 2019-07-26 | 2019-11-08 | 中冶集团武汉勘察研究院有限公司 | 用于填海深厚块石区的搅拌桩止水帷幕及施工方法 |
CN112442991A (zh) * | 2020-11-20 | 2021-03-05 | 中国长江三峡集团有限公司 | 一种在土层夹石块地质条件下基坑支护的方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52155817A (en) * | 1976-06-21 | 1977-12-24 | Aichi Kinzoku Kougiyou Kk | Execution method *equpment for driving sheet piles and crossbeam connecting tools for pit excavation for steel tower |
DD150400A3 (de) | 1979-03-27 | 1981-09-02 | Peter Stoll | Verfahren zur herstellung eines profilstahlrammpfahles |
DE3442559A1 (de) | 1984-11-22 | 1986-05-28 | Hochtief Ag Vorm. Gebr. Helfmann, 4300 Essen | Verfahren zur herstellung einer flexiblen untergrundabdichtung |
JPS62112820A (ja) * | 1985-11-12 | 1987-05-23 | Kajima Corp | 土留支保工の架設先行工法 |
JP3244324B2 (ja) * | 1993-01-27 | 2002-01-07 | 東洋テクノ株式会社 | 山留め工法 |
JP3178506B2 (ja) * | 1995-10-09 | 2001-06-18 | 日特建設株式会社 | 土留工法 |
JP4021056B2 (ja) | 1998-06-24 | 2007-12-12 | ナブコシステム株式会社 | 駐車場設置用地下ピット等の地下構造物工事工法 |
JP4905296B2 (ja) | 2007-08-29 | 2012-03-28 | 株式会社大林組 | 山留め壁の構築方法及び山留め壁 |
JP2013174086A (ja) * | 2012-02-24 | 2013-09-05 | Ohbayashi Corp | ソイルセメント壁の構築方法及びソイルセメント壁 |
JP6194206B2 (ja) | 2013-08-19 | 2017-09-06 | 鹿島建設株式会社 | 杭頭処理方法および揚重治具 |
-
2020
- 2020-11-20 CN CN202011311018.5A patent/CN112442991B/zh active Active
-
2021
- 2021-08-20 DE DE112021000151.5T patent/DE112021000151B4/de active Active
- 2021-08-20 JP JP2022528579A patent/JP7381747B2/ja active Active
- 2021-08-20 WO PCT/CN2021/113859 patent/WO2022017541A1/zh active Application Filing
- 2021-08-20 GB GB2207292.0A patent/GB2605291B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08253930A (ja) * | 1995-03-17 | 1996-10-01 | Fujita Corp | 逆打工法における中間杭の補強方法 |
JPH09158197A (ja) * | 1995-12-12 | 1997-06-17 | Kajima Corp | ニューマチックケーソン工法における岩盤掘削方法 |
CN101985836A (zh) * | 2010-09-10 | 2011-03-16 | 广东省基础工程公司 | 一种桩、墙式深基坑支护结构遇大块孤石的处理方法 |
CN109989405A (zh) * | 2017-12-30 | 2019-07-09 | 广州协安建设工程有限公司 | 孤石场地条件下基坑支护施工方法 |
CN110424434A (zh) * | 2019-07-26 | 2019-11-08 | 中冶集团武汉勘察研究院有限公司 | 用于填海深厚块石区的搅拌桩止水帷幕及施工方法 |
CN112442991A (zh) * | 2020-11-20 | 2021-03-05 | 中国长江三峡集团有限公司 | 一种在土层夹石块地质条件下基坑支护的方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114837088A (zh) * | 2022-04-27 | 2022-08-02 | 中国建筑第七工程局有限公司 | 一种公路上承台的施工方法 |
CN115369888A (zh) * | 2022-08-31 | 2022-11-22 | 中交一公局集团有限公司 | 一种深水裸岩基坑成型方法 |
Also Published As
Publication number | Publication date |
---|---|
CN112442991B (zh) | 2021-09-07 |
JP7381747B2 (ja) | 2023-11-15 |
DE112021000151T5 (de) | 2022-08-18 |
GB202207292D0 (en) | 2022-06-29 |
CN112442991A (zh) | 2021-03-05 |
JP2023501743A (ja) | 2023-01-18 |
DE112021000151B4 (de) | 2024-06-13 |
GB2605291A (en) | 2022-09-28 |
GB2605291B (en) | 2023-03-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2022017541A1 (zh) | 一种在土层夹石块地质条件下基坑支护的方法 | |
CN105735251B (zh) | 桥梁桩基旋挖钻机切削式全护筒跟进成桩施工方法及系统 | |
CN101457853B (zh) | 非开挖拉管施工工法 | |
CN108560541B (zh) | 一种旋挖钻全护筒跟进岩面钻进施工方法 | |
CN111577334B (zh) | 运营隧道仰拱修复方法 | |
CN110984132B (zh) | 复杂地质条件下地下连续墙成槽的施工方法 | |
CN110656947A (zh) | 海底基岩凸起段的掘进方法 | |
CN114108611B (zh) | 一种大直径钢管混凝土变径桩基施工方法 | |
CN112627840B (zh) | 顶管工程前置引导机构 | |
CN106592654A (zh) | 一种钢管桩垂直度监测方法 | |
RU2461712C2 (ru) | Способ разработки месторождений полезных ископаемых выбуриванием керна большого диаметра | |
CN104452776A (zh) | 遭遇孤石时地下连续墙的一种施工处治方法 | |
JP5524642B2 (ja) | 開削工法 | |
CN110541424B (zh) | 堰塞体防渗墙施工中灌浆用预埋管下设的方法 | |
CN114645715A (zh) | 一种区间盾构始发及接收施工方法 | |
RU2059813C1 (ru) | Способ разработки крутопадающих рудных тел | |
RU2059815C1 (ru) | Способ разработки крутопадающих подземных формаций | |
CN207469263U (zh) | 一种旋挖桩和高压注浆管桩复合深基坑围护体系 | |
CN220517200U (zh) | 一种切槽机动力头机构 | |
WO2010093080A1 (ko) | 지반 굴착장비 및 이를 이용한 지하 다각형상 쇼링 공법 | |
CN112253155B (zh) | 一种基于cd功法的平衡顶管施工方法 | |
Eckerlin | Mud Mountain Dam concrete cutoff wall—A case history | |
Liao et al. | Grouting for the rescue of stuck TBM in conglomerate boulder layer | |
TW201621121A (zh) | 沉箱結構及其應用工法 | |
Pereira | Cutoffs in dams: overview and recent developments |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21845749 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2022528579 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 202207292 Country of ref document: GB Kind code of ref document: A Free format text: PCT FILING DATE = 20210820 |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 21845749 Country of ref document: EP Kind code of ref document: A1 |