CN101338565A - Construction method of socket water stop curtain for dual spindle soil-cement stirring mill - Google Patents

Construction method of socket water stop curtain for dual spindle soil-cement stirring mill Download PDF

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CN101338565A
CN101338565A CN 200810020944 CN200810020944A CN101338565A CN 101338565 A CN101338565 A CN 101338565A CN 200810020944 CN200810020944 CN 200810020944 CN 200810020944 A CN200810020944 A CN 200810020944A CN 101338565 A CN101338565 A CN 101338565A
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cement
pile
step
soil cement
soil
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CN 200810020944
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CN100591865C (en
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丁晓红
丁金海
刘祖春
刘鑫泉
周健华
周忠民
李玉成
许崇华
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江苏华东建设基础工程有限公司
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Abstract

The invention relates to a construction method for muff coupling a water-seal curtain with a biaxial soil cement agitator. The construction method comprises the following steps: first step, a field is leveled; second step, a biaxial soil cement agitator is positioned; third step, the agitator is started up, agitation is performed for the first time and an agitator head is descended till the agitator head is descended to a design depth; fourth step, agitation is performed for the second time and the agitator head is ascended, simultaneously the cement mortar is sprayed, the agitator head is ascended to the top of the pile, and a first columnar induration is formed; fifth step, a mortar feeding tube and the agitator head are cleaned with clean water; sixth step, the agitator is moved forward for a pile position; seventh step, the third step and the fourth step are repeated to form a second columnar induration, and a soil cement agitator at the rear part of the first columnar induration is sleeved with a soil cement agitator at the front part of the second columnar induration, thereby the branching between the both columnar indurations are eliminated; eighth step, the step fifth, the step sixth and the step seventh are continually repeated till the water-seal curtain with branching around a foundation ditch is accomplished. The construction method enhances the integrity, the continuity and the barrier property of the water-seal curtain, not only saves space, but also saves the construction cost.

Description

一种双轴水泥土搅拌机套接止水帷幕的施工方法 A biaxially soil cement mixer construction methods socket waterproof curtain

技术领域 FIELD

本发明涉及基坑外围设置止水帷幕的方法,具体地说是涉及用一种常规双轴水泥土搅拌机套接进行止水帷幕的施工方法。 The present invention relates to a peripheral provided Foundation waterproof curtain method, particularly to a method for the construction of waterproof curtain in a conventional soil cement mixer biaxially socket.

背景技术 Background technique

为了保证基坑的顺利施工及周边建筑物的安全,通常在基坑外围设置止水帷幕,以阻止基坑外的地下水流入基坑内。 In order to ensure safe and smooth construction pit and the surrounding buildings, often set in the peripheral pit waterproof curtain to prevent flow into the groundwater outside the excavation pit. 止水帷幕由水泥浆与土搅拌形成的水泥土搅拌桩连接而成。 By a sealing curtain soil cement and soil slurry stirred stirred connected to each pile. 目前进行水泥土搅拌桩施工的水泥土搅拌机多为双轴水泥土搅拌机,其施工形成的两个水泥土搅拌桩组成一个柱状固结体,为防止基坑外的水流入基坑内,两个水泥土搅拌桩之间不仅有200mm搭接(重叠),而且两个柱状固结体之间也有200mm搭接(重叠)。 Soil cement mixer ongoing soil cement mixing pile construction plurality biaxially soil cement mixer, two soil cement which pile construction stirred consolidation to form a columnar body, to prevent water from flowing into the outside of the foundation pit, two cement not only 200mm overlap (overlap) between soil mixed piles, but also 200mm overlap (overlap) between the two cylindrical bodies consolidation. 但在工程实践中,由于双轴水泥土搅拌机定位误差、地层、施工振动等因素的影响,常在5m以下两个柱状固结体之间会出现开叉(搭接不好或重叠不好)的现象。 In engineering practice, but, due to the positioning error factors stirrer, formation, biaxial construction vibration soil cement, often appear in the slit between the two columnar solidification body 5m (overlapping or not overlapping bad) The phenomenon. 特别在砂土中,开叉的现象时有发生, 造成止水帷幕防渗功能降低,导致基坑漏水、流砂等事故发生,不仅影响了基坑施工,而且影响了基坑周边建筑物安全。 Especially in the sand, there occurred the phenomenon of split ends, resulting in seepage curtain sealing function is reduced, resulting in leaking pit, quicksand and other accidents, not only affects the construction pit, and the pit surrounding buildings affect safety.

为了解决开叉现象造成止水帷幕防渗功能的降低,通常在基坑外围设置采用由"四搅二喷"工艺形成的两排止水帷幕,以弥补单排止水帷幕出现的柱状固结体间开叉导致基坑漏水、流砂等事故的发生。 In order to solve the split phenomenon resulting in reduced waterproofing Seepage function generally provided using two rows of seal formed by the curtain "Four stirred two spray" process pit periphery, to compensate for a single row of columnar consolidation appears Waterproof Curtain split between the body leading to accidents pit water leakage, flow sand. "四搅二喷"工艺是指:双轴水泥土搅拌机一边搅拌, 一边下沉;下沉到设计深度后,双轴水泥土搅拌机下端的搅拌头喷口一边将水泥浆压入到土中, 一边搅拌提升;到地面后,双轴水泥土搅拌机一边搅拌, 一边下沉;下沉到设计深度后,搅拌头喷口一边将水泥浆压入到土中, 一边搅拌提升。 "Four stirred two spray" refers to the process: biaxially soil cement mixer with stirring sink; sink after the desired depth, the lower end of the mixer head biaxially cement mixing nozzle while the slurry is pressed into the soil, while stirring lift; to the ground after biaxial soil cement mixer with stirring sink; sink after the desired depth, while stirring the slurry nozzle head is pressed into the soil, to enhance stirring. 完成"四搅二喷"工艺后,把双轴水泥土搅拌机向左或右移动二个桩位,向上或下移动一个桩位,再重复"四搅二喷"施工工艺,完成二排止水帷幕的施工。 After completion of the "Four stirred two spray" process, the Soil cement mixer biaxially left or right two pile, a pile moving up or lower, and then repeat the "four stirred two spray" construction technology, complete sealing two rows construction curtain.

随着城市建设的快速发展,城市土地资源越来越珍贵,往往无二排止水帷幕的施工场地,同时二排止水帷幕增加了工程造价。 With the rapid development of urban construction, urban land resources are increasingly precious, often goes ranked waterproof curtain construction site, while two rows of waterproof curtain increase the project cost. 因此,急需解决双轴水泥土搅拌机在施工过程中由于两个柱状固结体之间出现开叉导致止水帷幕防渗功能降低 Therefore, the urgent need to address the emergence of biaxial soil cement mixer body split between two columnar consolidation leads to lower seal Seepage function in the construction process

的问题,但目前尚无解决双轴水泥土搅拌机在施工过程中产生的两个柱状固结体 Problem, but there is no resolution for two columnar consolidation bodies biaxial soil cement mixer produced during construction

之间开叉的方法。 The method split between.

发明内容 SUMMARY

本发明的目的在于克服现有双轴水泥土搅拌机进行止水帷幕施工过程中产生的两个柱状固结体之间开叉的问题,从而提供了一种双轴水泥土搅拌机套接止水帷幕的施工方法,提高止水帷幕的防渗功能,保证基坑施工和周边建筑物安全。 Object of the present invention is to overcome the conventional soil cement mixer for biaxially problem split between two cylindrical bodies water Curtain consolidation process generated, thereby providing a sealing socket biaxially soil cement mixer Curtain construction methods, improve the function of waterproof curtain seepage, foundation construction and surrounding buildings to ensure safety.

本发明的目的是通过以下的技术方案来实现的。 Object of the present invention is achieved by the following technical solutions. 一种双轴水泥土搅拌机套接止水帷幕的施工方法,其施工步骤如下: A biaxially Construction Method soil cement mixer curtain sealing socket, which construction steps are as follows:

1、 平整场地,清除地上障碍物和地下管线,保持场地平整; 1, leveling the ground and remove obstacles on the ground and underground pipelines, keep the site preparation;

2、 双轴水泥土搅拌机定位,把双轴水泥土搅拌机移至设计止水帷幕的第一根水泥土搅拌桩1的位置,使双轴水泥土搅拌机的第一根中心管中心对准第一根水泥土搅拌桩1的圆中心,第二根中心管中心对准第二根水泥土搅拌桩1的圆中心, 保持双轴水泥土搅拌机底盘的水平和导向架的竖直; 2, soil cement mixer biaxial orientation, the biaxially soil cement mixer moves to the first root soil cement mixing pile design waterproof curtain in position 1, the soil cement mixer biaxial first central tube center alignment of the first root mixing pile root circle center 1, a second central tube center alignment of the second root root cement mixing center of the circle of pile 1, holding the soil cement mixer chassis biaxial horizontal and vertical guide frame;

3、 一搅下沉,启动双轴水泥土搅拌机的电动机,放松钢丝绳,双轴水泥土搅拌机下端的搅拌头一边搅拌一边下沉,待搅拌头下沉至水泥土搅拌桩1的设计深度时,双轴水泥土搅拌机将水泥浆抽到料斗中; 3, a stirring sink, soil cement mixer biaxial starter motor, and releases the wire rope, the lower end of the biaxial mixer cement mixing head sink while stirring, the stirring head to be stirred when the soil cement sink to a depth Pile 1, biaxial soil - cement mixer cement slurry pumped to the hopper;

4、 二搅上升,边搅边喷水泥浆,搅拌头下沉至水泥土搅拌桩1的设计深度后, 开启双轴水泥土搅拌机输浆泵,从搅拌头的喷口将水泥浆压入土中,边喷水泥浆边提升搅拌头到水泥土搅拌桩1的设计桩顶深度为止,形成第一个柱状固结体2, 保证双轴水泥土搅拌机的送浆压力0.4—0.6MPa、提升速度0.8—lm/min、钻杆转速40—45转/min; 4, two stir rise, while stirring while water mud, soil cement mixing head sink to a depth of 1 Pile stirring, opening biaxially soil cement mixer output pump, the slurry from the mixing head buried in the press orifice, side spray mixing head lifted and the slurry mixing pile up to the top of the pile 1 is designed depth, speed 0.8 to form a first columnar solidification body 2, to ensure that the cement slurry feed pressure 0.4-0.6MPa biaxially soil stirrer, lift lm / min, the rotational speed of the drill rod 40-45 revolutions / min;

5、 清洗双轴水泥土搅拌机的输浆管, 一个由二根水泥土搅拌桩1组成的第一个柱状固结体2施工完毕后,向双轴水泥土搅拌机的料斗中注入清水,开启双轴水泥土搅拌机输浆泵,清洗输浆管中的残余水泥浆,并将粘附在搅拌头上的软土清洗干净; 5, the biaxially cleaning soil cement slurry mixer output tube, a stirring the two cement pile 2 after a completion of construction of a columnar body composed of consolidation, water is injected into the hopper of the biaxial mixer soil cement, open-bis soil cement mixer pump input shaft, the washing residue grout slurry input pipe, and adhering to the stirring head clean soft soil;

6、 按照止水帷幕的延伸方向,将双轴水泥土搅拌机前进一个水泥土搅拌桩1 的桩位,使双轴水泥土搅拌机的二根中心管中心分别对准二根水泥土搅拌桩1的 6, in accordance with the extending direction of the waterproof curtain, the Soil cement mixer proceeds a biaxial mixing pile of pile 1, soil cement mixer of biaxial two centers are aligned with the central tube cement mixing two pile 1

圆中心; Center of the circle;

7、 重复步骤3、 4,形成第二个柱状固结体2,第一个柱状固结体2的后面一个水泥土搅拌桩1与第二个柱状固结体2的前面一个水泥土搅拌桩1形成套接4, 7. Repeat steps 3, 4, the front body 1 is formed with a second cylindrical soil consolidation 2 of a second cement solidification body pillar 2, a first columnar solidification body 2 behind a cement mixing pile mixing pile 4 forming a socket,

消除了第一个柱状固结体2与第二个柱状固结体2之间出现的开叉; 2 eliminates the split occurs between the first member 2 and the second pillar consolidation consolidation columnar body;

8、 重复步骤5、步骤6、步骤7,完成第三个柱状固结体2,并使第二个柱状固结体2的后面一个水泥土搅拌桩1与第三个柱状固结体2的前面一个水泥土搅拌桩1形成套接4,消除了第二个柱状固结体2与第三个柱状固结体2之间出现的开叉; 8. Repeat Step 5, Step 6, Step 7, to complete the consolidation of the third columnar body 2, and a second columnar solidification body 2 behind a cement mixing pile 1 and the third cylindrical body 2 Consolidation a mixing pile in front of a socket 4 is formed, eliminating the split occurs between 2 second columnar solidification body 2 and the third pillar consolidation thereof;

9、 依次重复步骤8,依次使前面一个柱状固结体2的后面一个水泥土搅拌桩1与后一个柱状固结体2的前面一个水泥土搅拌桩1形成套接4,连续完成无开叉3的止水帷幕。 9, sequentially repeating the step 8, a soil cement sequentially in front of a rear pillar 2 is stirred consolidation pile 1 and a rear pillar 2 in front of a solidification body cement mixing pile forming a socket 4, without the completion of a continuous slit waterproof curtain 3.

发明有益效果 Advantageous Effects of Invention

1、不需对现有双轴水泥土搅拌机进行技术改进。 1, without the existing soil cement mixer biaxially technical improvements.

3、消除了柱状固结体下段出现开叉的现象,从而提高了止水帷幕的整体性、 连续性与防渗性,保证了基坑施工与基坑周边建筑物的安全。 3, eliminate the lower body split ends appear columnar consolidation phenomenon, thereby enhancing the integrity, continuity and impermeability of waterproof curtain to ensure the safety of the surrounding buildings and the construction pit excavation.

3、由于提高了止水帷幕的整体性、连续性和防渗性,单排止水帷幕可达到止水效果,不仅节约施工场地,而且节约工程造价。 3, due to the improved integrity, continuity and sealing curtain barrier properties, single-row sealing curtain sealing effect can be achieved, not only to save the construction site, and save construction costs. 附图说明 BRIEF DESCRIPTION

图1为两个柱状固结体下部之间的开叉示意图。 Figure 1 is a schematic split between the lower two pillar consolidation thereof.

图2为第一个柱状固结体的后面一个水泥土搅拌桩与第二个柱状固结体的前面一个水泥土搅拌桩套接示意图。 Figure 2 is a first columnar solidification body behind a cement mixing pile preceding the second columnar solidification body a sheathing schematic cement mixing pile.

图3为套接止水帷幕施工方法流程平面示意图。 FIG 3 is a schematic plan view of the socket waterproof curtain in the construction process.

附图标记:l一水泥土搅拌桩;2—柱状固结体;3—二个柱状固结体下部之间的开叉;4—套接。 Reference numerals: l a mixing pile; 2- columnar solidification body; 3- split between the lower two columnar solidification body; 4- socket. 具体实施方式实施例l DETAILED DESCRIPTION Embodiments of Example l

江苏省南京市大光路某工程地下室基坑深7m,基坑四边长170m。 Nanjing, Jiangsu Province, a large optical path Basement deep pit 7m, long pit four sides of 170m. 场地地面至地面以下4m为素填土, 4m以下为粉土,地下水面为地面以下l.lm。 Site ground to below ground as plain fill 4m, 4m following is silt, the water table below ground l.lm. 为阻止基坑外的地下水流入基坑内,保证基坑施工和基坑周边建筑物安全,需要在基坑外围设置止水帷幕。 To prevent flow into the groundwater outside the excavation pit, pit construction and buildings to ensure security around foundation needs to be set at the periphery pit waterproof curtain. 由于基坑位于市中心,施工场地有限,同时为节约工程造价, 在基坑外围设计了单排止水帷幕,止水帷幕由直径700mm的水泥土搅拌桩1搭接组成,搭接距200mm,水泥土搅拌桩1的设计桩底深度13m,设计桩顶深度为地面,则一种双轴水泥土搅拌机套接止水帷幕的施工方法,其施工步骤如下:1、 平整场地,清除地上障碍物和地下各种管线,保持场地平整; Since the pit located in the center, the construction site is limited, while in order to save construction cost, in a single-row peripheral foundation design curtain sealing, a sealing curtain stirred 700mm diameter pile soil cement composition 1 lap, lap distance 200mm, mixing pile substrate 1 designed post 13m depth, depth of the pile surface design, construction methods curtain is a biaxially soil cement mixer sealing socket, which construction steps are as follows: 1, land leveling, clearing an obstacle on the ground and a variety of underground pipelines, holding ground leveling;

2、 双轴水泥土搅拌机定位,把SJB—1双轴水泥土搅拌机移至设计的止水帷幕中第一根水泥土搅拌桩1的位置,SJB—1双轴水泥土搅拌机搅拌头直径700mm, 二个搅拌头之间有200mm的搭接,保证了二个水泥土搅拌桩1之间有200 mm的重叠(搭接),使双轴水泥土搅拌机的第一根中心管中心对准第一根水泥土搅拌桩1的圆中心,第二根中心管中心对准第二根水泥土搅拌桩1的圆中心,保持双轴水泥土搅拌机底盘的水平和导向架的竖直; 2, soil cement mixer biaxial orientation, the biaxially waterproof curtain SJB-1 Soil cement mixer designed to move a first position of a root cement mixing pile, biaxially SJB-1 soil cement mixer 700mm diameter mixing head, there is overlap between the two 200mm mixing head, to ensure that the two mixing pile there is overlap between 1 200 mm (the lap), soil cement mixer biaxial first central tube center alignment of the first root mixing pile root circle center 1, a second central tube center alignment of the second root root cement mixing center of the circle of pile 1, holding the soil cement mixer chassis biaxial horizontal and vertical guide frame;

3、 一搅下沉,启动SJB—1双轴水泥土搅拌机的电动机,放松钢丝绳,双轴水泥土搅拌机下端的搅拌头一边搅拌一边下沉,待搅拌头下沉至水泥土搅拌桩1 的13m深度时,SJB—1双轴水泥土搅拌机将水泥浆抽到料斗中; 3, a stirring sink, the biaxial starter motor SJB-1 soil cement mixer, and releases the wire rope, the lower end of the biaxial mixer cement mixing head sink while stirring, until the stirring head cement mixing pile sinks to the 13m 1 when the depth, SJB-1 biaxial mixer cement grout pumped soil hopper;

4、 二搅上升,边搅边喷水泥浆,搅拌头下沉至水泥土搅拌桩1的13m设计深度后,开启双轴水泥土搅拌机输浆泵,从搅拌头的喷口将水泥桨压入土中,边喷水泥浆边提升搅拌头到地面为止,形成第一个、由直径700mm的二根水泥土搅拌桩1组成、搭接距200mm、宽1200mm、深13m的柱状固结体2,保证双轴水泥土搅拌机的送浆压力0.5MPa、提升速度0.9m/min、钻杆转速44转/min; 4, two stir rise, while stirring while water mud, sink to the mixing head cement mixing Pile 1 design depth of 13m, a biaxial open soil cement mixer pump output, from the stirring head nozzle pitch pressed into the soil cement while water lifted and the slurry was stirred until the head to the ground, forming a first, stirred by a two 700mm diameter pile soil cement composition 1 lap distance 200mm, width 1200mm, 13m deep consolidation columnar body 2, to ensure that bis soil cement slurry feed pressure shaft stirrer 0.5MPa, to enhance the speed of 0.9m / min, the rotational speed of the drill pipe 44 revolutions / min;

5、 清洗双轴水泥土搅拌机的输浆管,第一个柱状固结体2施工完毕后,向双轴水泥土搅拌机的料斗中注入清水,开启双轴水泥土搅拌机输浆泵,清洗输浆管中的残余水泥浆,并将粘附在搅拌头上的土清洗干净; 5, the biaxially cleaning soil cement slurry mixer output tube 2 after completion of construction of a columnar body consolidation, water is injected into the hopper of the biaxial mixer soil cement, soil cement mixer biaxial open pump input, output cleaning slurry the residue slurry in the tube, and adhering soil clean stirring head;

6、 沿止水帷幕向右延伸方向,将双轴水泥土搅拌机前进一个水泥土搅拌桩1 的桩位,即向右移动500mm,使双轴水泥土搅拌机的二根中心管中心分别对准二根水泥土搅拌桩l的圆中心; 6, extends rightward along the waterproof curtain, the Soil cement mixer proceeds a biaxial mixing pile pile 1, i.e. moved rightward 500mm, soil cement biaxial stirrer centering two pipe II, respectively mixing pile root circle of the center l;

7、 重复步骤3、 4,形成第二个、由直径700mm的二根水泥土搅拌桩l组成、 搭接距200mm、宽1200mm、深13m的柱状固结体2,第一个柱状固结体2的后面一个水泥土搅拌桩1与第二个柱状固结体2的前面一个水泥土搅拌桩1形成套接4,消除了第一个柱状固结体2与第二个柱状固结体2之间出现的开叉; 7. Repeat steps 3, 4, to form a second, the two 700mm diameter mixing soil cement composition pile l, lap distance 200mm, width 1200mm, 2, a first columnar solidification body 13m deep consolidation columnar body 2 is a rear cement mixing pile 1 and 2 in a second front pillar consolidation of soil cement mixing pile body 1 is formed a socket 4, to eliminate the first columnar solidification body 2 and the second columnar bodies consolidation 2 between the occurrence of split ends;

8、 重复步骤5、步骤6、步骤7,完成第三个、由直径700mm的二根水泥土搅拌桩1组成、搭接距200mm、宽1200mm、深13m的柱状固结体2,并使第二个柱状固结体2的后面一个水泥土搅拌桩1与第三个柱状固结体2的前面一个水泥土搅拌桩1形成套接4,消除了第二个柱状固结体2与第三个柱状固结体2之间出现的开叉; 8. Repeat Step 5, Step 6, Step 7, to complete the third, the two 700mm diameter mixing soil cement composition piles 1 lap distance 200mm, width 1200mm, 13m deep consolidation columnar body 2, and the first 2 two behind the columnar solidification body of a soil cement mixed pile body 1 and the third pillar 2 in front of a consolidated cement mixing pile forming a socket 4, eliminating the second 2 and the third columnar body consolidation a columnar consolidation occurs between the split bodies;

9、依次重复步骤8,依次使前面一个柱状固结体2的后面一个水泥土搅拌桩1与后一个柱状固结体2的前面一个水泥土搅拌桩1形成套接4,连续完成长170m、 深13m、无开叉3的止水帷幕。 9, sequentially repeating the step 8, sequentially in front of a rear pillar and a rear body 2 of a consolidated cement mixing pile in front of a cylindrical body 2 of a consolidated cement mixing pile 1 formed socket 4, a continuous length of 170m is complete, depth 13m, no split ends 3 of waterproof curtain.

止水帷幕施工结束后,基坑开挖时未出现向基坑内流砂、漏水等现象,表明了用双轴水泥土搅拌机套接止水帷幕施工方法解决了柱状固结体2下部出现的开叉,提高了止水帷幕的防渗性,保证了基坑施工和基坑周边建筑物安全。 After the water Curtain, did not appear when excavation for sand, water leakage and other phenomena into the pit, indicating consolidation to solve the split cylindrical body 2 appears the lower part of the socket with a biaxially water Curtain soil cement mixer to improve the barrier properties of waterproof curtain to ensure that the building around foundation pit construction and safety. 实施例2 Example 2

江苏省南京市汉口路某工程地下室基坑深9m,基坑四边长200m。 Jiangsu Province, Nanjing Hankou Road, an engineering basement pit deep 9m, long pit four sides of 200m. 场地地面至地面以下3m为粉质粘土,地面以下3m至7m为粉土, 7m以下为砂土,地面以下lm为地下水面。 3m below ground to the site ground silty clay, the ground below 3m to 7m as silt, sand 7m following is, as the water table below ground lm. 为阻止基坑外的地下水流入基坑内,保证基坑施工和基坑周边建筑物安全,需要在基坑外围设置止水帷幕。 To prevent flow into the groundwater outside the excavation pit, pit construction and buildings to ensure security around foundation needs to be set at the periphery pit waterproof curtain. 由于基坑位于市中心,施工场地有限,同时为节约工程造价,在基坑外围设计了单排止水帷幕,止水帷幕由直径700mm的水泥土搅拌桩1搭接组成,搭接距200mm,水泥土搅拌桩1的桩底深度为17m,设计桩顶深度为地面,则一种双轴水泥土搅拌机插花套接止水帷幕的施工方法,其施工步骤如下: Since the pit located in the center, the construction site is limited, while in order to save construction cost, in a single-row peripheral foundation design curtain sealing, a sealing curtain stirred 700mm diameter pile soil cement composition 1 lap, lap distance 200mm, pile bottom depth cement mixing pile 1 is 17m, a depth of the pile surface design, construction methods curtain is a biaxially flower soil cement mixer sealing socket, which construction steps are as follows:

1、 平整场地,清除地上障碍物和地下各种管线,保持场地平整; 1, leveling the ground and remove obstacles on the ground and various underground pipelines, keep the site preparation;

2、 双轴水泥土搅拌机定位,把SJB—1双轴水泥土搅拌机移至设计的止水帷幕中第一根水泥土搅拌桩1的位置,SJB—1双轴水泥土搅拌机搅拌头直径700mm, 二个搅拌头之间有200mm的搭接,保证了二个水泥土搅拌桩1之间有200 mm的重叠(搭接),使双轴水泥土搅拌机的第一根中心管中心对准第一根水泥土搅拌桩1的圆中心,第二根中心管中心对准第二根水泥土搅拌桩1的圆中心,保持双轴水泥土搅拌机底盘的水平和导向架的竖直; 2, soil cement mixer biaxial orientation, the biaxially waterproof curtain SJB-1 Soil cement mixer designed to move a first position of a root cement mixing pile, biaxially SJB-1 soil cement mixer 700mm diameter mixing head, there is overlap between the two 200mm mixing head, to ensure that the two mixing pile there is overlap between 1 200 mm (the lap), soil cement mixer biaxial first central tube center alignment of the first root mixing pile root circle center 1, a second central tube center alignment of the second root root cement mixing center of the circle of pile 1, holding the soil cement mixer chassis biaxial horizontal and vertical guide frame;

3、 一搅下沉,启动SJB—1双轴水泥土搅拌机的电动机,放松钢丝绳,双轴水泥土搅拌机下端的搅拌头一边搅拌一边下沉,待搅拌头下沉至水泥土搅拌桩1 的17m深度时,SJB—1双轴水泥土搅拌机将水泥浆抽到料斗中; 3, a stirring sink, the biaxial starter motor SJB-1 soil cement mixer, and releases the wire rope, the lower end of the biaxial mixer cement mixing head sink while stirring, until the stirring head cement mixing pile sinks to the 17m 1 when the depth, SJB-1 biaxial mixer cement grout pumped soil hopper;

4、 二搅上升,边搅边喷水泥浆,搅拌头下沉至水泥土搅拌桩1的17m设计深度后,开启双轴水泥土搅拌机输浆泵,从搅拌头的喷口将水泥浆压入土中,边喷水泥浆边提升搅拌头到地面为止,形成第一个、由直径700mm的二根水泥土搅拌桩1组成、搭接距200mm、宽1200mm、深17m的柱状固结体2,保证双轴水泥土搅拌机的送浆压力0.6MPa、提升速度lm/min、钻杆转速44转/min; 4, two stir rise, while stirring while water mud, sink to the mixing head cement mixing Pile 1 design depth of 17m, a biaxial open soil cement mixer output pump, the slurry from the mixing head buried in the press orifice while water lifted and the slurry was stirred until the head to the ground, forming a first, stirred by a two 700mm diameter pile soil cement composition 1 lap distance 200mm, width 1200mm, 17m deep consolidation columnar body 2, to ensure that bis soil cement slurry feed pressure shaft stirrer 0.6MPa, to enhance the speed of lm / min, the rotational speed of the drill pipe 44 revolutions / min;

5、 清洗双轴水泥土搅拌机的输浆管,第一个柱状固结体2施工完毕后,向双轴水泥土搅拌机的料斗中注入清水,开启双轴水泥土搅拌机输浆泵,清洗输浆管中的残余水泥桨,并将粘附在搅拌头上的土清洗干净; 5, the biaxially cleaning soil cement slurry mixer output tube 2 after completion of construction of a columnar body consolidation, water is injected into the hopper of the biaxial mixer soil cement, soil cement mixer biaxial open pump input, output cleaning slurry the residue paddle cement pipe, and adhering soil clean stirring head;

6、 沿止水帷幕向右延伸方向,将双轴水泥土搅拌机前进一个水泥土搅拌桩1 的桩位,即向右移动500mm,使双轴水泥土搅拌机的二根中心管中心分别对准二根水泥土搅拌桩1的圆中心; 6, extends rightward along the waterproof curtain, the Soil cement mixer proceeds a biaxial mixing pile pile 1, i.e. moved rightward 500mm, soil cement biaxial stirrer centering two pipe II, respectively mixing pile root circle center 1;

7、 重复步骤3、 4,形成第二个、由直径700mm的二根水泥土搅拌桩l组成、 搭接距200mm、宽1200mm、深17m的柱状固结体2,第一个柱状固结体2的后面一个水泥土搅拌桩1与第二个柱状固结体2的前面一个水泥土搅拌桩1形成套接4,消除了第一个柱状固结体2与第二个柱状固结体2之间出现的开叉; 7. Repeat steps 3, 4, to form a second, the two 700mm diameter mixing soil cement composition pile l, lap distance 200mm, width 1200mm, 2, a first columnar solidification body 17m deep consolidation columnar body 2 is a rear cement mixing pile 1 and 2 in a second front pillar consolidation of soil cement mixing pile body 1 is formed a socket 4, to eliminate the first columnar solidification body 2 and the second columnar bodies consolidation 2 between the occurrence of split ends;

8、 重复步骤5、步骤6、步骤7,完成第三个、由直径700mm的二根水泥土搅拌桩I组成、搭接距200mm、宽1200mm、深17m的柱状固结体2,并使第二个柱状固结体2的后面一个水泥土搅拌桩1与第三个柱状固结体2的前面一个水泥土搅拌桩1形成套接4,消除了第二个柱状固结体2与第三个柱状固结体2之间出现的开叉; 8. Repeat Step 5, Step 6, Step 7, to complete the third, the two soil cement mixing pile diameter 700mm I composition, lap distance 200mm, width 1200mm, 17m deep consolidation columnar body 2, and the first 2 two behind the columnar solidification body of a soil cement mixed pile body 1 and the third pillar 2 in front of a consolidated cement mixing pile forming a socket 4, eliminating the second 2 and the third columnar body consolidation a columnar consolidation occurs between the split bodies;

9、 依次重复步骤8,依次使前面一个柱状固结体2的后面一个水泥土搅拌桩1与后一个柱状固结体2的前面一个水泥土搅拌桩1形成套接4,连续完成长200m、 深17m、无开叉3的止水帷幕。 9, sequentially repeating the step 8, sequentially in front of a rear pillar and a rear body 2 of a consolidated cement mixing pile in front of a cylindrical body 2 of a consolidated cement mixing pile 1 formed socket 4, a continuous length of 200m is complete, depth 17m, no split ends 3 of waterproof curtain.

止水帷幕施工结束后,基坑开挖时未出现向基坑内流砂、漏水等现象,表明了用双轴水泥土搅拌机套接止水帷幕施工方法解决了柱状固结体2下部出现的开叉,提高了止水帷幕的防渗性,保证了基坑施工和基坑周边建筑物安全。 After the water Curtain, did not appear when excavation for sand, water leakage and other phenomena into the pit, indicating consolidation to solve the split cylindrical body 2 appears the lower part of the socket with a biaxially water Curtain soil cement mixer to improve the barrier properties of waterproof curtain to ensure that the building around foundation pit construction and safety.

Claims (1)

1、一种双轴水泥土搅拌机套接止水帷幕的施工方法,其施工步骤如下: (1)平整场地,清除地上障碍物和地下管线,保持场地平整; (2)双轴水泥土搅拌机定位,把双轴水泥土搅拌机移至设计止水帷幕的第一根水泥土搅拌桩1的位置,使双轴水泥土搅拌机的第一根中心管中心对准第一根水泥土搅拌桩1的圆中心,第二根中心管中心对准第二根水泥土搅拌桩1的圆中心,保持双轴水泥土搅拌机底盘的水平和导向架的竖直; (3)一搅下沉,启动双轴水泥土搅拌机的电动机,放松钢丝绳,双轴水泥土搅拌机下端的搅拌头一边搅拌一边下沉,待搅拌头下沉至水泥土搅拌桩1的设计深度时,双轴水泥土搅拌机将水泥浆抽到料斗中; (4)二搅上升,边搅边喷水泥浆,搅拌头下沉至水泥土搅拌桩1的设计深度后,开启双轴水泥土搅拌机输浆泵,从搅拌头的喷口将水泥浆压入土 1, the construction method stirrer socket waterproof curtain a biaxially soil cement, the construction steps are as follows: (a) leveling the ground, underground pipelines and remove obstructions on the ground, holding ground leveling; stirrer positioning (2) biaxial soil cement , the soil cement mixer biaxially waterproof curtain designed to move the first root cement mixing pile position 1, the soil cement mixer biaxial first center alignment of the first pipe root cement mixing pile root circle 1 center, the second center pipe root aligned with the second mixing pile root circle center 1, holding the soil cement mixer chassis biaxial horizontal and vertical guide frame; (3) a stirring sink, start biaxially cement soil stirrer motor, releases the wire rope, the lower end of the biaxial mixer cement mixing head sink while stirring, the stirring head to be stirred when the soil cement sink to a depth of 1 pile biaxial mixer soil cement grout pumped hopper ; and (4) two stirred rises, while stirring while water mud, soil cement mixing head sink to a depth of 1 pile stirring, opening biaxially soil cement mixer output pump, the mixing head jets press the slurry buried 中,边喷水泥浆边提升搅拌头到水泥土搅拌桩1的设计桩顶深度为止,形成第一个柱状固结体2,保证双轴水泥土搅拌机的送浆压力0.4-0.6MPa、提升速度0.8-1m/min、钻杆转速40-45转/min; (5)清洗双轴水泥土搅拌机的输浆管,一个由二根水泥土搅拌桩1组成的第一个柱状固结体2施工完毕后,向双轴水泥土搅拌机的料斗中注入清水,开启双轴水泥土搅拌机输浆泵,清洗输浆管中的残余水泥浆,并将粘附在搅拌头上的软土清洗干净; (6)按照止水帷幕的延伸方向,将双轴水泥土搅拌机前进一个水泥土搅拌桩1的桩位,使双轴水泥土搅拌机的二根中心管中心分别对准二根水泥土搅拌桩1的圆中心; (7)重复步骤3、4,形成第二个柱状固结体2,第一个柱状固结体2的后面一个水泥土搅拌桩1与第二个柱状固结体2的前面一个水泥土搅拌桩1形成套接4,消除了第一个柱状固结体2 , The side edge lifting was stirred slurry water to cement mixing pile head up to the top of the pile 1 is designed depth, the speed of forming a first columnar solidification body 2, to ensure that the cement slurry feed pressure 0.4-0.6MPa biaxially soil stirrer, lift 0.8-1m / min, the rotational speed of the drill rod 40-45 revolutions / min; (5) washing the soil cement mixer output biaxially slurry pipe, consisting of two stirred cement pile 1 a first columnar body construction 2 consisting of consolidation after completion, the cement is injected into the soil hopper biaxial mixer in water, soil cement mixer input opening biaxially pump, washing the residue grout slurry input pipe, and adhering to the stirring head clean soft soil; ( 6) according to the extending direction of waterproof curtain, the soil cement mixer proceeds a biaxial mixing pile of pile 1, soil cement mixer of biaxial two centers are aligned with the central tube cement mixing two pile 1 center of the circle; (7) repeating steps 3 and 4, a second columnar solidification body 2, after the first consolidation columnar body 2 a cement mixing pile 1 and a second cylindrical body 2 in front of the consolidation mixing pile 1 socket 4 is formed, eliminating the first columnar body consolidation 2 第二个柱状固结体2之间出现的开叉; (8)重复步骤5、步骤6、步骤7,完成第三个柱状固结体2,并使第二个柱状固结体2的后面一个水泥土搅拌桩1与第三个柱状固结体2的前面一个水泥土搅拌桩1形成套接4,消除了第二个柱状固结体2与第三个柱状固结体2之间出现的开叉; (9)依次重复步骤8,依次使前面一个柱状固结体2的后面一个水泥土搅拌桩1与后一个柱状固结体2的前面一个水泥土搅拌桩1形成套接4,连续完成无开叉3的止水帷幕。 2 split occurs between the second pillar consolidation thereof; (8) Repeat steps 5, Step 6, Step 7, to complete the consolidation of the third cylindrical bodies 2, 2 and the rear second cylindrical body consolidation a cement mixing piles 1 and 2 of a third front pillar consolidation of soil cement mixing pile body 1 is formed a socket 4, to eliminate the occurrence of consolidation between the two second columnar body 2 and a third cylindrical body consolidation the slitting; (9) sequentially repeating the step 8, sequentially in front of a rear pillar 2, a solidification body cement mixing pile 1 and a rear pillar 2 in front of a solidification body cement mixing pile forming a socket 4, no complete waterproof curtain continuous slit 3.
CN 200810020944 2008-08-08 2008-08-08 Construction method of socket water stop curtain for dual spindle soil-cement stirring mill CN100591865C (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
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CN101639540B (en) 2009-06-25 2011-11-16 江苏华东地质建设集团有限公司 Method for detecting seepage passage hidden trouble of waterproof curtain
CN102261079A (en) * 2011-04-28 2011-11-30 朱奎 One kind of pit stop construction method curtain

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CN103572768B (en) * 2012-08-02 2015-07-15 中国石油化工集团公司 Cement-mixed pile closed retaining wall foundation structure for tank foundations and treatment method thereof

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CN2410329Y (en) 2000-01-27 2000-12-13 上海三佳建设(集团)有限公司 Reinforced concrete stirring device
CN1296571C (en) 2004-04-09 2007-01-24 南京大学 Method for supporting foundation trench for agitation piles of soil cement with concrete as the core

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101639540B (en) 2009-06-25 2011-11-16 江苏华东地质建设集团有限公司 Method for detecting seepage passage hidden trouble of waterproof curtain
CN102261079A (en) * 2011-04-28 2011-11-30 朱奎 One kind of pit stop construction method curtain
CN102261079B (en) * 2011-04-28 2013-06-12 庞有标 Construction method for foundation pit waterproof curtain

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