WO2021135156A1 - Construction apparatus for deep stirring by using curing material and construction method therefor - Google Patents

Construction apparatus for deep stirring by using curing material and construction method therefor Download PDF

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Publication number
WO2021135156A1
WO2021135156A1 PCT/CN2020/101638 CN2020101638W WO2021135156A1 WO 2021135156 A1 WO2021135156 A1 WO 2021135156A1 CN 2020101638 W CN2020101638 W CN 2020101638W WO 2021135156 A1 WO2021135156 A1 WO 2021135156A1
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Prior art keywords
channel
drill
construction
nozzle
chute
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PCT/CN2020/101638
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French (fr)
Chinese (zh)
Inventor
宋伟杰
李建平
宋德君
朱庆凯
王伟涛
刘光磊
武思宇
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北京中岩大地科技股份有限公司
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Priority to CN201911385510.4A priority Critical patent/CN110847147A/en
Priority to CN201911385510.4 priority
Application filed by 北京中岩大地科技股份有限公司 filed Critical 北京中岩大地科技股份有限公司
Publication of WO2021135156A1 publication Critical patent/WO2021135156A1/en

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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00Improving or preserving soil or rock, e.g. preserving permafrost soil
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/12Consolidating by placing solidifying or pore-filling substances in the soil
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/34Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/46Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil

Abstract

Disclosed are a construction apparatus for deep stirring by using a curing material and a construction method therefor, which belong to the technical field of construction in foundation engineering. The construction apparatus comprises a drilling machine, a drill rod, a drill bit, a power head, a booster pump, a drag reduction material box, a water tank, a curing material supply bin, an air compressor, a conveying apparatus, angle steel, a first channel, a second channel, a converter, a sliding groove and a fixing bolt, wherein the drill rod is internally provided with the first channel and the second channel, the angle steel is welded on the drill rod, and the length of the angle steel is equal to that of the drill rod; and the drag reduction material box, the water tank, the booster pump, the first channel, the air compressor, the material supply bin, etc., are connected by means of high-pressure rubber pipes. According to the present invention, by means of the action of a drag reduction material, stirring resistance is obviously reduced; by means of arrangement of nozzles with different pore diameters, automatic conversion is carried out in drill feeding and drill lifting processes, and automatic conversion of slurry in different construction stages can be achieved; and air pressure caused in the construction process can be effectively reduced by means of arranging angle steel.

Description

一种采用固化材料进行深层搅拌的施工设备及其施工方法Construction equipment using solidified materials for deep mixing and construction method thereof 技术领域Technical field
本发明属于基础工程中施工技术领域,具体涉及到一种采用固化材料进行深层搅拌的施工设备及其施工方法。 The invention belongs to the technical field of construction in basic engineering, and specifically relates to a construction equipment that uses solidified materials for deep mixing and a construction method thereof.
背景技术Background technique
粉喷桩是一种利用压缩空气输送粉体固化材料,并通过搅拌叶片使固化材 料与软土搅拌混合在一起形成水泥土桩体加固软土地基的方法。这种方法自从 瑞典工程师Kjeld pans 1967年发明以来,在国内外的铁路、公路,市政工程, 港口码头等各类软土地基加固工程中得到了广泛的应用。我国自70年代末期引进该方法以来,在铁路、公路,工业与民用等工程中也得到了推广应用。DJM pile is a method of using compressed air to transport powder solidified material, and mixing the solidified material with soft soil through mixing blades to form a cement-soil pile to strengthen the soft soil foundation. Since this method was invented by Swedish engineer Kjeld pans in 1967, it has been widely used in various soft soil foundation reinforcement projects at home and abroad, such as railways, highways, municipal engineering, ports and wharfs. Since the introduction of this method in my country in the late 1970s, it has also been popularized and applied in railway, highway, industrial and civil engineering.
大量工程实践表明,粉喷桩法具有施工简单,快速,振动小等优点,能有效地提高软土地基的稳定性,减少和控制沉降量。然而粉喷桩价格昂贵,深部处理效果不佳(有效加固深度一般<15m),因而限制了该方法的大量应用,另一方面,在施工过程中常出现意想不到的问题,如:A large number of engineering practices have shown that the powder jet pile method has the advantages of simple construction, rapid construction, and low vibration, which can effectively improve the stability of soft soil foundations and reduce and control settlement. However, the powder jet pile is expensive and the deep treatment effect is not good (the effective reinforcement depth is generally less than 15m), which limits the large number of applications of this method. On the other hand, unexpected problems often occur during the construction process, such as:
(1)当存在临空面时,粉喷桩施工会引起边坡失稳;(1) When there is an empty surface, the construction of dry jet mixing pile will cause slope instability;
(2)在已有构筑物附近施工,会引起地面开裂,构筑物受损等现象;(2) Construction near existing structures will cause ground cracks and damage to structures, etc.;
(3)施工完后的粉喷桩会突然下沉等。(3) The powder sprayed pile will suddenly sink after construction.
实际上这些现象不是偶然的,都与粉喷桩施工时产生的一种短时侧向压力 有关,导致周围孔隙水压力增加,其来源主要是:(1)粉喷桩施工时的压缩空气对周围土体施加的侧向压力;(2)搅拌叶片搅拌时对周围土体施加的剪切力。In fact, these phenomena are not accidental. They are all related to a short-term lateral pressure generated during the construction of dry jetted piles, which leads to an increase in the surrounding pore water pressure. The main sources are: (1) The compressed air during dry jetted pile construction The lateral pressure exerted by the surrounding soil; (2) The shear force exerted by the stirring blade on the surrounding soil during stirring.
因此,为了降低粉喷桩施工的负面效应,本发明提出了一种采用固化材料进行深层搅拌的施工设备及其施工方法。Therefore, in order to reduce the negative effects of the powder jet pile construction, the present invention proposes a construction equipment and a construction method using solidified materials for deep mixing.
技术解决方案Technical solutions
针对现有技术中存在的上述技术问题,本发明提出了一种采用固化材料进行深层搅拌的施工设备及其施工方法,克服了现有技术的不足。通过降阻材料的作用,使深层搅拌桩在较深地层中的搅拌阻力明显降低;通过设置不同孔径的喷口,并在下钻和提钻的过程中喷口自动转换,能够解决不同施工阶段下浆液种类难以的改变的难题,通过设置角钢,有效降低了施工过程中引起的空气压力,降低对周边土体的扰动。In view of the above-mentioned technical problems in the prior art, the present invention proposes a construction equipment and a construction method using solidified materials for deep mixing, which overcomes the shortcomings of the prior art. Through the action of resistance reducing materials, the mixing resistance of deep mixing piles in deeper formations is significantly reduced; by setting nozzles with different diameters, and automatically changing the nozzles during drilling and lifting, it can solve the types of slurry in different construction stages It is difficult to change the difficult problem. By setting the angle steel, the air pressure caused during the construction process is effectively reduced, and the disturbance to the surrounding soil is reduced.
为了实现上述目的,本发明采用如下技术方案:In order to achieve the above objectives, the present invention adopts the following technical solutions:
一种采用固化材料进行深层搅拌的施工设备,其特征在于:包括钻机、钻杆、钻头、动力头、增压泵、降阻材料箱、水箱、材料供应仓、空气压缩机、传送设备、角钢、1号通道、2号通道、转换器、滑槽、固定栓;所述钻杆为中空圆管,钻杆内部设置有1号通道和2号通道,当两根管道分布于动力头内部钻杆时,2号通道的中轴线与该段钻杆的中轴线重合,1号通道位于2号通道一侧,当两根管道进入钻杆后, 2号通道和1号通道存在一定角度的弯折,钻杆的重心与钻杆中轴线重合;所述角钢共两根,沿钻杆中心对称分布,角钢焊接在钻杆之上,角钢的长度与钻杆等长;所述降阻材料箱和水箱均通过高压胶管与增压泵连接,增压泵通过高压胶管与1号通道连接,所述空气压缩机与材料供应仓通过高压胶管连接,材料供应仓通过高压胶管与2号通道连接,所述传送设备与材料供应仓连接,进行传送材料;通过1号通道和2号通道将材料输送到钻头处,进行施工作业。A construction equipment that uses solidified materials for deep mixing, which is characterized in that it includes a drill, a drill rod, a drill bit, a power head, a booster pump, a resistance-reducing material tank, a water tank, a material supply warehouse, an air compressor, a transmission device, and an angle steel. , No. 1 passage, No. 2 passage, converter, chute, fixing bolt; The drill pipe is a hollow round pipe, and the inside of the drill pipe is provided with No. 1 and No. 2 passages. When the two pipes are distributed inside the power head drill The central axis of the No. 2 channel coincides with the central axis of the drill pipe section. The No. 1 channel is located on the side of the No. 2 channel. When the two pipes enter the drill pipe, the No. 2 channel and the No. 1 channel have a certain angle of bend. The center of gravity of the drill pipe coincides with the center axis of the drill pipe; the two angle steels are symmetrically distributed along the center of the drill pipe, and the angle steel is welded on the drill pipe, and the length of the angle steel is the same as the length of the drill pipe; the resistance reducing material box Both the air compressor and the water tank are connected to the booster pump through a high-pressure hose, the booster pump is connected to channel 1 through a high-pressure hose, the air compressor is connected to the material supply bin through a high-pressure hose, and the material supply bin is connected to channel 2 through a high-pressure hose. The conveying equipment is connected with the material supply warehouse to convey materials; the materials are conveyed to the drill bit through the No. 1 channel and the No. 2 channel for construction work.
优选地,所述转换器上设置有三个喷口和滑槽,与滑槽对应位置的钻杆处设置有固定栓,通过固定栓固定转换器,可以通过下钻和提钻时钻杆的转向调整喷口的开合状态,三个喷口分为小喷口、1号大喷口、2号大喷口,小喷口与1号大喷口关于转换器截面的圆心对称分布,设置在靠近钻头的叶片处,2号大喷口与1号大喷口处于同一竖直平面内,2号大喷口设置在远离钻头的叶片处;所述滑槽共四个,滑槽关于转换器中心对称分布,每个滑槽占整个转换器周长的1/8,滑槽的宽度为0.5-2.0cm,深度为2.0-5.0cm,所述固定栓沿着滑槽移动的速度范围为0.01-0.1rad/s。Preferably, the converter is provided with three spouts and chutes, and a fixing bolt is provided at the drill rod corresponding to the chute. The converter is fixed by the fixing bolt, and the steering of the drill rod can be adjusted by drilling down and lifting the drill. The opening and closing status of the nozzles, the three nozzles are divided into small nozzles, No. 1 large nozzles, and No. 2 large nozzles. The small nozzles and No. 1 large nozzles are symmetrically distributed about the center of the converter section, and are set near the blade of the drill bit, No. 2 The large nozzle is in the same vertical plane as the No. 1 large nozzle, and the No. 2 large nozzle is set at the blade away from the drill bit; there are four chutes in total, and the chutes are symmetrically distributed about the center of the converter, and each chute occupies the entire conversion 1/8 of the circumference of the device, the width of the chute is 0.5-2.0cm, and the depth is 2.0-5.0cm, and the speed range of the fixing bolt moving along the chute is 0.01-0.1rad/s.
优选地,所述角钢的边长范围为80-140mm,厚度范围为8-14mm;所述钻杆为双重管,钻杆的直径为200-300mm,壁厚8-12mm。Preferably, the side length of the angle steel is in the range of 80-140mm, and the thickness is in the range of 8-14mm; the drill rod is a double tube, the diameter of the drill rod is 200-300mm, and the wall thickness is 8-12mm.
优选地,所述1号通道与2号通道平行,两者的轴线距离为30mm-300mm,所述1号通道内输送的为流塑态液体,所述2号通道内输送的为粉末状固体,所述2号通道是1号通道直径的1.5-2.0倍,2号通道和1号通道弯折的角度范围为10°-80°。Preferably, the No. 1 channel is parallel to the No. 2 channel, and the distance between the axes of the two is 30mm-300mm, the fluid conveyed in the No. 1 channel is a fluid plastic liquid, and the conveyed in the No. 2 channel is a powdery solid. The No. 2 passage is 1.5-2.0 times the diameter of the No. 1 passage, and the bending angle of the No. 2 passage and the No. 1 passage is in the range of 10°-80°.
优选地,小喷口设置在叶片前侧,喷口直径范围为3-5mm,1号大喷口和2号大喷口的直径范围均为5-8mm,均分布在叶片背侧。Preferably, the small nozzles are arranged on the front side of the blade, and the diameters of the nozzles are in the range of 3-5 mm, and the diameters of the No. 1 large nozzle and the No. 2 large nozzle are both 5-8 mm, which are both distributed on the back side of the blade.
优选地,所述传送设备包括传送带,防护罩,传送带一端靠近地面进行固化材料装载,传送带另一端固定在材料供应仓上部的进料口处,传送带上设置有防护罩,防护罩横截面呈半圆形,与传送带共同组成密闭通道。Preferably, the conveying equipment includes a conveyor belt, a protective cover, one end of the conveyor belt is close to the ground for loading the solidified material, the other end of the conveyor belt is fixed at the feed inlet of the upper part of the material supply bin, the conveyor belt is provided with a protective cover, and the cross section of the protective cover is half. Round shape, forming a closed channel together with the conveyor belt.
一种采用固化材料进行深层搅拌的施工设备施工方法,其特征在于,采用如权利要求1所述的一种采用固化材料进行深层搅拌的施工设备,按照如下方法进行施工:A construction method for construction equipment using solidified materials for deep mixing, characterized in that the construction equipment using solidified materials for deep mixing according to claim 1 is used for construction according to the following method:
步骤1:检查设备安全性,对机械进行组装和试运转;Step 1: Check the safety of the equipment, assemble and test the machine;
步骤2:加固放置机体位置的基础,使搅拌机轴保持垂直,调节桩机支腿油缸使钻机钻杆与水平面呈90度夹角,倾斜角度误差不大于0.5%;Step 2: Reinforce the foundation for placing the machine body, keep the mixer shaft vertical, adjust the pile machine leg cylinder so that the drill rod of the drill rig is at a 90-degree angle with the horizontal plane, and the inclination angle error is not more than 0.5%;
步骤3:将降阻材料装入存储箱,开启电动机采用外部搅拌钻杆带动外部搅拌叶片对降阻材料进行搅拌,转速100r/min-2000r/min,连续搅拌3-10min,间隔1-5min之后反向搅拌3-10min;Step 3: Load the resistance-reducing material into the storage box, turn on the motor and use the external stirring drill rod to drive the external stirring blade to stir the resistance-reducing material at a speed of 100r/min-2000r/min, continuous stirring for 3-10min, after an interval of 1-5min Reverse stirring for 3-10min;
步骤4:将水倒入水箱,开启增压泵,降阻材料浓度控制在0-5%,通过高压胶管输送到1号通道,降阻材料的注入压强范围为0.01-1.0MPa;Step 4: Pour water into the water tank, turn on the booster pump, control the concentration of the resistance-reducing material at 0-5%, and deliver it to channel 1 through the high-pressure hose. The injection pressure of the resistance-reducing material is in the range of 0.01-1.0MPa;
步骤5:将固化材料通过空气压力机的高气压输送到2号通道,空气压力机的压强为0.1-5.0MPa;Step 5: The solidified material is delivered to the No. 2 channel through the high air pressure of the air press, and the pressure of the air press is 0.1-5.0 MPa;
步骤6:开启钻机,正转预搅下沉,下钻速度控制在0.5m/min~3.0m/min,控制钻速在5r/min~50r/min,观察增压泵和空气压力机上压强表读数,随钻杆下钻增压泵以0.01MPa-0.1MPa为梯度逐渐增加,同时空气压力机以0.01MPa-0.1MPa为梯度逐渐增加;Step 6: Turn on the drilling rig, rotate forward, pre-stir and sink, control the drilling speed at 0.5m/min~3.0m/min, and control the drilling speed at 5r/min~50r/min. Observe the pressure gauge on the booster pump and air pressure machine Readings, as the drill pipe is drilled, the booster pump gradually increases with a gradient of 0.01MPa-0.1MPa, while the air compressor gradually increases with a gradient of 0.01MPa-0.1MPa;
步骤7:随着钻杆正转即顺时针转动,固定栓沿着滑槽移动,当移动到滑槽的端部,转换器上的小喷口和1号大喷口与钻杆连通,同时,2号大喷口关闭;Step 7: As the drill pipe rotates clockwise, the fixing bolt moves along the chute. When it moves to the end of the chute, the small nozzle on the converter and the large nozzle No. 1 are connected to the drill pipe. At the same time, 2 No. large spout is closed;
步骤8:当钻至接近设计深度时,应用低速慢转钻进,钻机原位转动1-2min,待下钻到设计深度时,反向旋转即逆时针转动并提升钻头,提升速度为0.2~2.0m/min,控制转速为5r/min~30r/min,喷射压力控制在0.2~5MPa,此时,固定栓沿着滑槽移动,当移动到滑槽的端部,转换器上的2号大喷口与钻杆连通,同时,小喷口和1号大喷口关闭;Step 8: When the drilling is close to the design depth, apply low-speed slow-rotation drilling, and the drill rig rotates in situ for 1-2 minutes. When the drill reaches the design depth, reverse rotation, that is, rotate counterclockwise and raise the drill bit at a speed of 0.2~ 2.0m/min, the control speed is 5r/min~30r/min, and the injection pressure is controlled at 0.2~5MPa. At this time, the fixing bolt moves along the chute. When it moves to the end of the chute, No. 2 on the converter The large nozzle is connected to the drill pipe, and at the same time, the small nozzle and No. 1 large nozzle are closed;
步骤9:当提升到设计标高后,原地搅拌1-5min;将钻头提升至地面以上,关闭空气压缩机和增压泵,施工完毕。Step 9: After raising to the design elevation, stir on the spot for 1-5 minutes; raise the drill bit above the ground, turn off the air compressor and booster pump, and the construction is completed.
优选地,所述材料为水泥或粉煤灰等粉体固化剂,水泥为普通硅酸盐水泥,强度等级为42.5,水泥掺量范围为8-30%,颗粒粒径范围为1-60μm。Preferably, the material is a powder curing agent such as cement or fly ash, the cement is ordinary Portland cement, the strength grade is 42.5, the cement content ranges from 8-30%, and the particle size ranges from 1-60 μm.
有益效果Beneficial effect
本发明所带来的有益技术效果:The beneficial technical effects brought by the present invention:
(1)通过降阻材料的作用,使深层搅拌桩在较深地层中的搅拌阻力明显降低;(2)通过设置不同孔径的喷口,并在下钻和提钻的过程中喷口自动转换,能够解决不同施工阶段下浆液种类难以的改变的难题;(3)通过设置角钢,有效降低了施工过程中引起的空气压力,较低对周边土体的扰动。(1) Through the action of the resistance reducing material, the mixing resistance of the deep mixing pile in the deeper stratum is obviously reduced; (2) By setting up nozzles with different diameters, and automatically changing the nozzles during the drilling and lifting process, it can be solved The difficulty of changing the type of grout in different construction stages is difficult; (3) By installing angle steel, the air pressure caused during the construction process is effectively reduced, and the disturbance to the surrounding soil is lower.
附图说明Description of the drawings
图1为本发明一种采用固化材料进行深层搅拌的施工设备的结构示意图。Figure 1 is a schematic structural diagram of a construction equipment using solidified materials for deep mixing of the present invention.
图2为本发明一种采用固化材料进行深层搅拌的施工设备中钻头的结构示意图。Figure 2 is a schematic diagram of the structure of a drill bit in a construction equipment using solidified materials for deep mixing of the present invention.
图3为本发明一种采用固化材料进行深层搅拌的施工设备中1号通道的结构示意图。Fig. 3 is a schematic diagram of the structure of No. 1 channel in a construction equipment using solidified materials for deep mixing according to the present invention.
图4为本发明一种采用固化材料进行深层搅拌的施工设备中钻杆的截面示意图。Fig. 4 is a schematic cross-sectional view of a drill rod in a construction equipment using solidified materials for deep mixing according to the present invention.
图5为本发明一种采用固化材料进行深层搅拌的施工设备中下钻过程中转换器的结构示意图。Fig. 5 is a schematic diagram of the structure of the converter in the drilling process of a construction equipment using solidified materials for deep mixing according to the present invention.
图6为本发明一种采用固化材料进行深层搅拌的施工设备中提钻过程中转换器的结构示意图。Fig. 6 is a schematic diagram of the structure of the converter during the drilling process of a construction equipment that uses solidified materials for deep mixing according to the present invention.
其中,1-钻机;2-钻杆;3-钻头;4-动力头;5-增压泵;6-降阻材料箱;7-水箱;8-材料供应仓;9-空气压缩机;10-传送设备;11-角钢;12-1号通道;13-2号通道;14-转换器;15-滑槽;16-固定栓。Among them, 1-drilling rig; 2-drill rod; 3-drill bit; 4-power head; 5-booster pump; 6-resistance-reducing material tank; 7-water tank; 8-material supply warehouse; 9-air compressor; 10 -Transfer equipment; 11-angle steel; 12-1 channel; 13-2 channel; 14-converter; 15-chute; 16-fixing bolt.
本发明的实施方式Embodiments of the present invention
下面结合附图以及具体实施方式对本发明作进一步详细说明:The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:
实施例1:Example 1:
采用本发明所述的施工方法对污染场地土壤进行治理,土壤治理所用的药剂为粉体药剂,具体试验过程如下所示:The construction method of the present invention is used to treat the soil of the contaminated site. The agent used for soil treatment is a powder agent. The specific test process is as follows:
如图1-6所示,一种采用固化材料进行深层搅拌的施工设备,其特征在于:包括钻机1、钻杆2、钻头3、动力头4、增压泵5、降阻材料箱6、水箱7、材料供应仓8、空气压缩机9、传送设备10、角钢11、1号通道12、2号通道13、转换器14、滑槽15、固定栓16;所述钻杆2为中空圆管,钻杆2内部设置有1号通道12和2号通道13,当两根管道分布于动力头4内部钻杆时,2号通道13的中轴线与该段钻杆的中轴线重合,1号通道12位于2号通道13一侧,当两根管道进入钻杆2后, 2号通道13和1号通道12存在一定角度的弯折,钻杆2的重心与钻杆2中轴线重合;所述角钢11共两根,沿钻杆2中心对称分布,角钢11焊接在钻杆2之上,角钢11的长度与钻杆2等长;所述降阻材料箱6和水箱7均通过高压胶管与增压泵5连接,增压泵5通过高压胶管与1号通道12连接,所述空气压缩机9与材料供应仓8通过高压胶管连接,材料供应仓8通过高压胶管与2号通道13连接,所述传送设备10与材料供应仓8连接,进行传送材料;通过1号通道12和2号通道13将材料输送到钻头3处,进行施工作业。As shown in Figure 1-6, a construction equipment that uses solidified materials for deep mixing is characterized in that it includes a drill 1, a drill rod 2, a drill bit 3, a power head 4, a booster pump 5, a resistance reducing material box 6, Water tank 7, material supply warehouse 8, air compressor 9, conveying equipment 10, angle steel 11, channel 1 12, channel 2 13, converter 14, chute 15, fixing bolt 16; the drill rod 2 is a hollow circle Pipe, the drill pipe 2 is provided with No. 1 passage 12 and No. 2 passage 13. When the two pipes are distributed in the drill pipe inside the power head 4, the central axis of the No. 2 passage 13 coincides with the central axis of the drill pipe, 1 Passage 12 is located on the side of Passage 2 13. When the two pipes enter the drill pipe 2, Passage 2 13 and Passage 1 12 are bent at a certain angle, and the center of gravity of the drill pipe 2 coincides with the center axis of the drill pipe 2; There are two angle steels 11, which are symmetrically distributed along the center of the drill pipe 2. The angle steel 11 is welded to the drill pipe 2, and the length of the angle steel 11 is the same as that of the drill pipe 2. The resistance-reducing material tank 6 and the water tank 7 are both passed through high pressure The hose is connected to the booster pump 5, and the booster pump 5 is connected to the No. 1 channel 12 through a high-pressure hose. The air compressor 9 is connected to the material supply bin 8 by a high-pressure hose, and the material supply bin 8 is connected to the No. 2 channel 13 through the high-pressure hose. In connection, the conveying device 10 is connected to the material supply warehouse 8 to convey materials; the material is conveyed to the drill bit 3 through the No. 1 channel 12 and the No. 2 channel 13 for construction work.
优选地,所述转换器14上设置有三个喷口和滑槽15,与滑槽15对应位置的钻杆2处设置有固定栓16,通过固定栓16固定转换器14,可以通过下钻和提钻时钻杆2的转向调整喷口的开合状态,三个喷口分为小喷口、1号大喷口、2号大喷口,小喷口与1号大喷口关于转换器14截面的圆心对称分布,设置在靠近钻头3的叶片处,2号大喷口与1号大喷口处于同一竖直平面内,2号大喷口设置在远离钻头3的叶片处;所述滑槽15共四个,滑槽15关于转换器14中心对称分布,每个滑槽15占整个转换器14周长的1/8,滑槽15的宽度为1.0cm,深度为3.0cm,所述固定栓16沿着滑槽15移动的速度范围为0.05rad/s。Preferably, the converter 14 is provided with three spouts and chutes 15, and a fixing bolt 16 is provided at the drill rod 2 corresponding to the chute 15. The converter 14 is fixed by the fixing bolt 16, which can be drilled down and lifted. When drilling, the rotation of the drill rod 2 adjusts the opening and closing of the nozzles. The three nozzles are divided into small nozzles, No. 1 large nozzles, and No. 2 large nozzles. The small nozzles and No. 1 large nozzles are symmetrically distributed with respect to the center of the converter 14 section. At the blade close to the drill bit 3, the No. 2 large nozzle is in the same vertical plane as the No. 1 large nozzle, and the No. 2 large nozzle is set at the blade far from the drill bit 3. There are four chutes 15 in total, and the chute 15 is about The converter 14 is symmetrically distributed in the center, and each chute 15 occupies 1/8 of the circumference of the entire converter 14. The width of the chute 15 is 1.0 cm, and the depth is 3.0 cm. The fixing bolt 16 moves along the chute 15 The speed range is 0.05rad/s.
优选地,所述角钢11的边长范围为100mm,厚度范围为10mm;所述钻杆2为双重管,钻杆2的直径为250mm,壁厚10mm。Preferably, the side length of the angle steel 11 is in the range of 100 mm and the thickness is in the range of 10 mm; the drill rod 2 is a double tube, the diameter of the drill rod 2 is 250 mm, and the wall thickness is 10 mm.
优选地,所述1号通道12与2号通道13平行,两者的轴线距离为30mm-300mm,所述1号通道12内输送的为流塑态液体,所述2号通道13内输送的为粉末状固体,所述2号通道13是1号通道12直径的1.5倍,2号通道13和1号通道12弯折的角度范围为60°。Preferably, the No. 1 channel 12 and the No. 2 channel 13 are parallel, and the distance between the axes of the two is 30mm-300mm. The No. 1 channel 12 conveys a fluid plastic liquid, and the No. 2 channel 13 conveys It is a powdery solid, the No. 2 passage 13 is 1.5 times the diameter of the No. 1 passage 12, and the bending angle range of the No. 2 passage 13 and the No. 1 passage 12 is 60°.
优选地,小喷口设置在叶片前侧,喷口直径范围为4mm,1号大喷口和2号大喷口的直径范围均为7mm,均分布在叶片背侧。Preferably, the small nozzles are arranged on the front side of the blade, the diameter of the nozzles is in the range of 4 mm, and the diameter of the No. 1 large nozzle and the No. 2 large nozzle are both 7 mm, both of which are distributed on the back side of the blade.
优选地,所述传送设备10包括传送带,防护罩,传送带一端靠近地面进行固化材料装载,传送带另一端固定在材料供应仓8上部的进料口处,传送带上设置有防护罩,防护罩横截面呈半圆形,与传送带共同组成密闭通道。Preferably, the conveying equipment 10 includes a conveyor belt and a protective cover. One end of the conveyor belt is close to the ground for loading solidified materials, the other end of the conveyor belt is fixed at the upper part of the material supply bin 8 at the feed inlet, and a protective cover is provided on the conveyor belt. The cross section of the protective cover It is semicircular and forms a closed channel with the conveyor belt.
一种采用固化材料进行深层搅拌的施工设备施工方法,其特征在于,采用如权利要求1所述的一种采用固化材料进行深层搅拌的施工设备,按照如下方法进行施工:A construction method of construction equipment using solidified materials for deep mixing, characterized in that the construction equipment using solidified materials for deep mixing according to claim 1 is used for construction according to the following method:
步骤1:检查设备安全性,对机械进行组装和试运转;Step 1: Check the safety of the equipment, assemble and test the machine;
步骤2:加固放置机体位置的基础,使搅拌机轴保持垂直,调节桩机支腿油缸使钻机1钻杆2与水平面呈90°夹角,倾斜角度误差不大于0.5%;Step 2: Reinforce the foundation of the machine body position, keep the mixer shaft vertical, adjust the pile machine leg cylinder so that the drill rod 2 of the drill rig 1 and the horizontal plane form an angle of 90°, and the inclination angle error is not more than 0.5%;
步骤3:将降阻材料装入存储箱,开启电动机采用外部搅拌钻杆2带动搅拌叶片对降阻材料进行搅拌,转速500r/mi,连续搅拌5min,间隔2min之后反向搅拌5min;Step 3: Load the resistance-reducing material into the storage box, turn on the motor and use the external stirring drill rod 2 to drive the stirring blade to stir the resistance-reducing material at a speed of 500r/mi, continuous stirring for 5 minutes, and reverse stirring for 5 minutes after an interval of 2 minutes;
步骤4:将水倒入水箱7,开启增压泵5,降阻材料浓度控制在2%,通过高压胶管输送到1号通道12,降阻材料的注入压强范围为0.2MPa;Step 4: Pour water into the water tank 7, turn on the booster pump 5, control the concentration of the resistance-reducing material at 2%, and deliver it to the No. 1 channel 12 through the high-pressure hose. The injection pressure range of the resistance-reducing material is 0.2MPa;
步骤5:将材料通过空气压力机的高气压输送到2号通道13,空气压力机的压强为0.8MPa;Step 5: The material is delivered to the 2nd channel 13 through the high pressure of the air press, and the pressure of the air press is 0.8MPa;
步骤6:开启钻机1,正转预搅下沉,下钻速度控制在0.6m/min,控制钻速在10r/min,观察增压泵5和空气压力机上压强表读数,随钻杆2下钻增压泵5以0.01MPa为梯度逐渐增加,同时空气压力机以0.01MPa为梯度逐渐增加;Step 6: Turn on the drilling rig 1, forward rotation, pre-stirring and sinking, the drilling speed is controlled at 0.6m/min, and the drilling speed is controlled at 10r/min. Observe the pressure gauge readings on the booster pump 5 and the air pressure machine, and go down with the drill pipe 2. Drill booster pump 5 gradually increases with a gradient of 0.01MPa, while the air compressor gradually increases with a gradient of 0.01MPa;
步骤7:随着钻杆2正转即顺时针转动,固定栓16沿着滑槽15移动,当移动到滑槽15的端部,转换器14上的小喷口和1号大喷口与钻杆2连通,同时,2号大喷口关闭;Step 7: As the drill rod 2 rotates clockwise, the fixing bolt 16 moves along the chute 15. When it moves to the end of the chute 15, the small nozzle and the No. 1 large nozzle on the converter 14 are connected to the drill rod. 2 is connected, and at the same time, the No. 2 large nozzle is closed;
步骤8:当钻至接近设计深度时,应用低速慢转钻进,钻机1原位转动2min,待下钻到设计深度时,反向旋转即逆时针转动并提升钻头3,提升速度为0.8m/min,控制转速为10r/min,喷射压力控制在0.8MPa,此时,固定栓16沿着滑槽15移动,当移动到滑槽15的端部,转换器14上的2号大喷口与钻杆2连通,同时,小喷口和1号大喷口关闭;Step 8: When the drilling is close to the design depth, use low-speed slow-rotation drilling. Drill rig 1 rotates in-situ for 2 minutes. When drilling down to the design depth, rotate counterclockwise and raise the drill bit 3 with a lifting speed of 0.8m /min, the control speed is 10r/min, and the injection pressure is controlled at 0.8MPa. At this time, the fixing bolt 16 moves along the chute 15. When it moves to the end of the chute 15, the No. 2 nozzle on the converter 14 is Drill pipe 2 is connected, and at the same time, the small nozzle and the large nozzle No. 1 are closed;
步骤9:当提升到设计标高后,原地搅拌2min;将钻头3提升至地面以上,关闭空气压缩机9和增压泵5,施工完毕。Step 9: After raising to the design elevation, stir on the spot for 2 minutes; raise the drill bit 3 above the ground, turn off the air compressor 9 and the booster pump 5, and the construction is completed.
优选地,所述材料为水泥或粉煤灰等粉体固化剂,水泥为普通硅酸盐水泥,强度等级为42.5,水泥掺量范围为25%,颗粒粒径范围为40μm。Preferably, the material is a powder curing agent such as cement or fly ash, the cement is ordinary Portland cement, the strength grade is 42.5, the cement content range is 25%, and the particle size range is 40 μm.
实施例2:Example 2:
采用本发明所述的施工方法在滨海地区进行施工,具体试验过程如下所示:The construction method described in the present invention is used for construction in the coastal area, and the specific test process is as follows:
如图1-6所示,一种采用固化材料进行深层搅拌的施工设备,其特征在于:包括钻机1、钻杆2、钻头3、动力头4、增压泵5、降阻材料箱6、水箱7、材料供应仓8、空气压缩机9、传送设备10、角钢11、1号通道12、2号通道13、转换器14、滑槽15、固定栓16;所述钻杆2为中空圆管,钻杆2内部设置有1号通道12和2号通道13,当两根管道分布于动力头4内部钻杆时,2号通道13的中轴线与该段钻杆的中轴线重合,1号通道12位于2号通道一侧,当两根管道进入钻杆2后, 2号通道13和1号通道12存在一定角度的弯折,钻杆2的重心与钻杆2中轴线重合,所述角钢11共两根,沿钻杆2中心对称分布,角钢11焊接在钻杆2之上,角钢11的长度与钻杆2等长;所述降阻材料箱6和水箱7均通过高压胶管与增压泵5连接,增压泵5通过高压胶管与1号通道12连接,所述空气压缩机9与材料供应仓8通过高压胶管连接,材料供应仓8通过高压胶管与2号通道13连接,所述传送设备10与材料供应仓8连接,进行传送材料;通过1号通道12和2号通道13将材料输送到钻头3处,进行施工作业。As shown in Figure 1-6, a construction equipment that uses solidified materials for deep mixing is characterized in that it includes a drill 1, a drill rod 2, a drill bit 3, a power head 4, a booster pump 5, a resistance reducing material box 6, Water tank 7, material supply warehouse 8, air compressor 9, conveying equipment 10, angle steel 11, channel 1 12, channel 2 13, converter 14, chute 15, fixing bolt 16; the drill rod 2 is a hollow circle Pipe, the drill pipe 2 is provided with No. 1 passage 12 and No. 2 passage 13. When the two pipes are distributed in the drill pipe inside the power head 4, the central axis of the No. 2 passage 13 coincides with the central axis of the drill pipe, 1 Passage 12 is located on the side of Passage 2. When the two pipes enter the drill pipe 2, Passage 2 13 and Passage 1 12 are bent at a certain angle. The center of gravity of the drill pipe 2 coincides with the center axis of the drill pipe 2, so There are two angle steels 11, which are distributed symmetrically along the center of the drill pipe 2. The angle steel 11 is welded on the drill pipe 2, and the length of the angle steel 11 is the same as the drill pipe 2. The resistance reducing material tank 6 and the water tank 7 both pass through the high pressure hose Connected to the booster pump 5, the booster pump 5 is connected to the No. 1 channel 12 through a high-pressure hose, the air compressor 9 is connected to the material supply bin 8 by a high-pressure hose, and the material supply bin 8 is connected to the No. 2 channel 13 through a high-pressure hose The conveying equipment 10 is connected to the material supply warehouse 8 to convey materials; the materials are conveyed to the drill bit 3 through the No. 1 channel 12 and the No. 2 channel 13 for construction work.
优选地,所述转换器14上设置有三个喷口和滑槽15,与滑槽15对应位置的钻杆2处设置有固定栓16,通过固定栓16固定转换器14,可以通过下钻和提钻时钻杆2的转向调整喷口的开合状态,三个喷口分为小喷口、1号大喷口、2号大喷口,小喷口与1号大喷口关于转换器14截面的圆心对称分布,设置在靠近钻头3的叶片处,2号大喷口与1号大喷口处于同一竖直平面内,2号大喷口设置在远离钻头3的叶片处;所述滑槽15共四个,滑槽15关于转换器14中心对称分布,每个滑槽15占整个转换器14周长的1/8,滑槽15的宽度为1.0cm,深度为3.0cm,所述固定栓16沿着滑槽15移动的速度范围为0.05rad/s。Preferably, the converter 14 is provided with three spouts and chutes 15, and a fixing bolt 16 is provided at the drill rod 2 corresponding to the chute 15. The converter 14 is fixed by the fixing bolt 16, which can be drilled down and lifted. When drilling, the rotation of the drill rod 2 adjusts the opening and closing of the nozzles. The three nozzles are divided into small nozzles, No. 1 large nozzles, and No. 2 large nozzles. The small nozzles and No. 1 large nozzles are symmetrically distributed with respect to the center of the converter 14 section. At the blade close to the drill bit 3, the No. 2 large nozzle is in the same vertical plane as the No. 1 large nozzle, and the No. 2 large nozzle is set at the blade far from the drill bit 3. There are four chutes 15 in total, and the chute 15 is about The converter 14 is symmetrically distributed in the center, and each chute 15 occupies 1/8 of the circumference of the entire converter 14. The width of the chute 15 is 1.0 cm, and the depth is 3.0 cm. The fixing bolt 16 moves along the chute 15 The speed range is 0.05rad/s.
优选地,所述角钢11的边长范围为100mm,厚度范围为10mm;所述钻杆2为双重管,钻杆2的直径为250mm,壁厚10mm。Preferably, the side length of the angle steel 11 is in the range of 100 mm and the thickness is in the range of 10 mm; the drill rod 2 is a double tube, the diameter of the drill rod 2 is 250 mm, and the wall thickness is 10 mm.
优选地,所述1号通道12与2号通道13平行,两者的轴线距离为30mm-300mm,所述1号通道12内输送的为流塑态液体,所述2号通道13内输送的为粉末状固体,所述2号通道13是1号通道12直径的1.5倍,2号通道13和1号通道12弯折的角度范围为60°。Preferably, the No. 1 channel 12 and the No. 2 channel 13 are parallel, and the distance between the axes of the two is 30mm-300mm. The No. 1 channel 12 conveys a fluid plastic liquid, and the No. 2 channel 13 conveys It is a powdery solid, the No. 2 passage 13 is 1.5 times the diameter of the No. 1 passage 12, and the bending angle range of the No. 2 passage 13 and the No. 1 passage 12 is 60°.
优选地,小喷口设置在叶片前侧,喷口直径范围为4mm,1号大喷口和2号大喷口的直径范围均为7mm,均分布在叶片背侧。Preferably, the small nozzles are arranged on the front side of the blade, the diameter of the nozzles is in the range of 4 mm, and the diameter of the No. 1 large nozzle and the No. 2 large nozzle are both 7 mm, both of which are distributed on the back side of the blade.
优选地,所述传送设备10包括传送带,防护罩,传送带一端靠近地面进行固化材料装载,传送带另一端固定在材料供应仓8上部的进料口处,传送带上设置有防护罩,防护罩横截面呈半圆形,与传送带共同组成密闭通道。Preferably, the conveying equipment 10 includes a conveyor belt and a protective cover. One end of the conveyor belt is close to the ground for loading solidified materials, the other end of the conveyor belt is fixed at the upper part of the material supply bin 8 at the feed inlet, and a protective cover is provided on the conveyor belt. The cross section of the protective cover It is semicircular and forms a closed channel with the conveyor belt.
一种采用固化材料进行深层搅拌的施工设备施工方法,其特征在于,采用如权利要求1所述的一种采用固化材料进行深层搅拌的施工设备,按照如下方法进行施工:A construction method of construction equipment using solidified materials for deep mixing, characterized in that the construction equipment using solidified materials for deep mixing according to claim 1 is used for construction according to the following method:
步骤1:检查设备安全性,对机械进行组装和试运转;Step 1: Check the safety of the equipment, assemble and test the machine;
步骤2:加固放置机体位置的基础,使搅拌机轴保持垂直,调节桩机支腿油缸使钻机1钻杆2与水平面呈90°夹角,倾斜角度误差不大于0.5%;Step 2: Reinforce the foundation of the machine body position, keep the mixer shaft vertical, adjust the pile machine leg cylinder so that the drill rod 2 of the drill rig 1 and the horizontal plane form an angle of 90°, and the inclination angle error is not more than 0.5%;
步骤3:将降阻材料装入存储箱,开启电动机采用外部搅拌钻杆2带动外部搅拌叶片对降阻材料进行搅拌,转速500r/mi,连续搅拌5min,间隔2min之后反向搅拌5min;Step 3: Load the resistance-reducing material into the storage box, turn on the motor and use the external stirring drill rod 2 to drive the external stirring blade to stir the resistance-reducing material at a speed of 500r/mi, continuous stirring for 5 minutes, and reverse stirring for 5 minutes after an interval of 2 minutes;
步骤4:将水倒入水箱7,开启增压泵5,降阻材料浓度控制在2%,通过高压胶管输送到1号通道12,降阻材料的注入压强范围为0.2MPa;Step 4: Pour water into the water tank 7, turn on the booster pump 5, control the concentration of the resistance-reducing material at 2%, and deliver it to the No. 1 channel 12 through the high-pressure hose. The injection pressure range of the resistance-reducing material is 0.2MPa;
步骤5:将固化材料通过空气压力机的高气压输送到2号通道13,空气压力机的压强为0.8MPa;Step 5: The cured material is delivered to the 2nd channel 13 through the high air pressure of the air press, and the pressure of the air press is 0.8MPa;
步骤6:开启钻机1,正转预搅下沉,下钻速度控制在0.6m/min,控制钻速在10r/min,观察增压泵5和空气压力机上压强表读数,随钻杆2下钻增压泵5以0.01MPa为梯度逐渐增加,同时空气压力机以0.01MPa为梯度逐渐增加;Step 6: Turn on the drilling rig 1, forward rotation, pre-stirring and sinking, the drilling speed is controlled at 0.6m/min, and the drilling speed is controlled at 10r/min. Observe the pressure gauge readings on the booster pump 5 and the air pressure machine, and go down with the drill pipe 2. Drill booster pump 5 gradually increases with a gradient of 0.01MPa, while the air compressor gradually increases with a gradient of 0.01MPa;
步骤7:随着钻杆2正转即顺时针转动,固定栓16沿着滑槽15移动,当移动到滑槽15的端部,转换器14上的小喷口和1号大喷口与钻杆2连通,同时,2号大喷口关闭;Step 7: As the drill rod 2 rotates clockwise, the fixing bolt 16 moves along the chute 15. When it moves to the end of the chute 15, the small nozzle and the No. 1 large nozzle on the converter 14 are connected to the drill rod. 2 is connected, and at the same time, the No. 2 large nozzle is closed;
步骤8:当钻至接近设计深度时,应用低速慢转钻进,钻机1原位转动2min,待下钻到设计深度时,反向旋转即逆时针转动并提升钻头3,提升速度为0.8m/min,控制转速为10r/min,喷射压力控制在0.8MPa,此时,固定栓16沿着滑槽15移动,当移动到滑槽15的端部,转换器14上的2号大喷口与钻杆2连通,同时,小喷口和1号大喷口关闭;Step 8: When the drilling is close to the design depth, use low-speed slow-rotation drilling, and the rig 1 rotates in-situ for 2 minutes. When the drill reaches the design depth, reverse rotation, that is, rotate counterclockwise and raise the drill bit 3 at a lifting speed of 0.8m /min, the control speed is 10r/min, and the injection pressure is controlled at 0.8MPa. At this time, the fixing bolt 16 moves along the chute 15. When it moves to the end of the chute 15, the No. 2 nozzle on the converter 14 is Drill pipe 2 is connected, and at the same time, the small nozzle and the large nozzle No. 1 are closed;
步骤9:当提升到设计标高后,原地搅拌2min;将钻头3提升至地面以上,关闭空气压缩机9和增压泵5,施工完毕。Step 9: After raising to the design elevation, stir on the spot for 2 minutes; raise the drill bit 3 above the ground, turn off the air compressor 9 and the booster pump 5, and the construction is completed.
优选地,所述材料为水泥或粉煤灰等粉体固化剂,水泥为普通硅酸盐水泥,强度等级为42.5,水泥掺量范围为25%,颗粒粒径范围为40μm。Preferably, the material is a powder curing agent such as cement or fly ash, the cement is ordinary Portland cement, the strength grade is 42.5, the cement content range is 25%, and the particle size range is 40 μm.
本发明一种采用固化材料进行深层搅拌的施工设备及其施工方法,通过降阻材料的作用,使深层搅拌桩在较深地层中的搅拌阻力明显降低;通过设置不同孔径的喷口,并在下钻和提钻的过程中喷口自动转换,能够解决不同施工阶段下浆液种类难以的改变的难题;通过设置角钢11,有效降低了施工过程中引起的空气压力,降低对周边土体的扰动。The present invention is a construction equipment and construction method for deep mixing using solidified materials. Through the action of resistance reducing materials, the mixing resistance of deep mixing piles in deeper formations is significantly reduced; by setting nozzles with different apertures, and drilling down Automatic conversion of nozzles during drilling and lifting can solve the difficult problem of changing the type of grout in different construction stages; by setting the angle steel 11, the air pressure caused during the construction process can be effectively reduced, and the disturbance to the surrounding soil can be reduced.
当然,上述说明并非是对本发明的限制,本发明也并不仅限于上述举例,本技术领域的技术人员在本发明的实质范围内所做出的变化、改型、添加或替换,也属于本发明的保护范围。Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the essential scope of the present invention also belong to the present invention. The scope of protection.

Claims (8)

  1. 一种采用固化材料进行深层搅拌的施工设备,其特征在于:包括钻机、钻杆、钻头、动力头、增压泵、降阻材料箱、水箱、固化材料供应仓、空气压缩机、传送设备、角钢、1号通道、2号通道、转换器、滑槽、固定栓;所述钻杆为中空圆管,钻杆内部设置有1号通道和2号通道,当两根管道分布于动力头内部钻杆时,2号通道的中轴线与该段钻杆的中轴线重合,1号通道位于2号通道一侧,当两根管道进入钻杆后, 2号通道和1号通道存在一定角度的弯折,钻杆的重心与钻杆中轴线重合;所述角钢共两根,沿钻杆中心对称分布,角钢焊接在钻杆之上,角钢的长度与钻杆等长;所述降阻材料箱和水箱均通过高压胶管与增压泵连接,增压泵通过高压胶管与1号通道连接,所述空气压缩机与材料供应仓通过高压胶管连接,材料供应仓通过高压胶管与2号通道连接,所述传送设备与材料供应仓连接,进行传送材料;通过1号通道和2号通道将材料输送到钻头处,进行施工作业。A construction equipment that uses solidified materials for deep mixing, which is characterized in that it includes a drill, a drill rod, a drill bit, a power head, a booster pump, a resistance reducing material tank, a water tank, a solidified material supply warehouse, an air compressor, a transmission equipment, Angle steel, No. 1 passage, No. 2 passage, converter, chute, fixing bolt; The drill pipe is a hollow round pipe, and the inside of the drill pipe is provided with No. 1 and No. 2 passages. When the two pipes are distributed inside the power head When drilling pipe, the central axis of channel 2 coincides with the central axis of the section of drill pipe. Channel 1 is located on the side of channel 2. When two pipes enter the drill pipe, channel 2 and channel 1 have a certain angle. Bending, the center of gravity of the drill pipe coincides with the center axis of the drill pipe; the two angle steels are symmetrically distributed along the center of the drill pipe, and the angle steel is welded on the drill pipe, and the length of the angle steel is the same as the length of the drill pipe; the resistance reducing material Both the tank and the water tank are connected to the booster pump through a high-pressure hose, the booster pump is connected to channel 1 through a high-pressure hose, the air compressor is connected to the material supply bin through a high-pressure hose, and the material supply bin is connected to channel 2 through a high-pressure hose , The conveying equipment is connected with the material supply warehouse to convey materials; the materials are conveyed to the drill bit through the No. 1 channel and the No. 2 channel for construction operations.
  2. 根据权利要求1所述的一种采用固化材料进行深层搅拌的施工设备,其特征在于,所述转换器上设置有三个喷口和滑槽,与滑槽对应位置的钻杆处设置有固定栓,通过固定栓固定转换器,可以通过下钻和提钻时钻杆的转向调整喷口的开合状态,三个喷口分为小喷口、1号大喷口、2号大喷口,小喷口与1号大喷口关于转换器截面的圆心对称分布,设置在靠近钻头的叶片处,2号大喷口与1号大喷口处于同一竖直平面内,2号大喷口设置在远离钻头的叶片处;所述滑槽共四个,滑槽关于转换器中心对称分布,每个滑槽占整个转换器周长的1/8,滑槽的宽度为0.5-2.0cm,深度为2.0-5.0cm,所述固定栓沿着滑槽移动的速度范围为0.01-0.1rad/s。The construction equipment for deep mixing using solidified materials according to claim 1, wherein the converter is provided with three spouts and chutes, and a fixing bolt is provided at the drill rod at the position corresponding to the chutes, The converter is fixed by the fixed bolt, and the opening and closing state of the nozzle can be adjusted by the rotation of the drill rod when drilling down and lifting the drill. The three nozzles are divided into small nozzles, No. 1 large nozzles, No. 2 large nozzles, and small nozzles and No. 1 large nozzles. The nozzles are symmetrically distributed with respect to the center of the converter section, and are arranged near the blades of the drill bit, the No. 2 large nozzle and the No. 1 large nozzle are in the same vertical plane, and the No. 2 large nozzle is set at the blade away from the drill bit; the chute There are four chutes symmetrically distributed about the center of the converter. Each chute occupies 1/8 of the circumference of the entire converter. The width of the chute is 0.5-2.0cm and the depth is 2.0-5.0cm. The moving speed range of the chute is 0.01-0.1rad/s.
  3. 根据权利要求1所述的一种采用固化材料进行深层搅拌的施工设备,其特征在于,所述角钢的边长范围为80-140mm,厚度范围为8-14mm;所述钻杆为双重管,钻杆的直径为200-300mm,壁厚8-12mm。The construction equipment for deep mixing using solidified materials according to claim 1, wherein the side length of the angle steel is in the range of 80-140mm and the thickness is in the range of 8-14mm; the drill rod is a double pipe, The diameter of the drill rod is 200-300mm, and the wall thickness is 8-12mm.
  4. 根据权利要求1所述的一种采用固化材料进行深层搅拌的施工设备,其特征在于,所述1号通道与2号通道平行,两者的轴线距离为30mm-300mm,所述1号通道内输送的为流塑态液体,所述2号通道内输送的为粉末状固体,所述2号通道是1号通道直径的1.5-2.0倍,2号通道和1号通道弯折的角度范围为10°-80°。The construction equipment for deep mixing using solidified materials according to claim 1, wherein the No. 1 channel is parallel to the No. 2 channel, and the distance between the axes of the two is 30mm-300mm. What is conveyed is a fluid plastic liquid, what is conveyed in the 2nd channel is a powdery solid, the 2nd channel is 1.5-2.0 times the diameter of the 1st channel, and the bending angle range of the 2nd channel and the 1st channel is 10°-80°.
  5. 根据权利要求1所述的一种采用固化材料进行深层搅拌的施工设备,其特征在于,小喷口设置在叶片前侧,喷口直径范围为3-5mm,1号大喷口和2号大喷口的直径范围均为5-8mm,均分布在叶片背侧。The construction equipment for deep mixing using solidified materials according to claim 1, characterized in that the small nozzle is arranged on the front side of the blade, the diameter of the nozzle is in the range of 3-5mm, and the diameter of the No. 1 large nozzle and the No. 2 large nozzle The range is 5-8mm, all distributed on the back side of the blade.
  6. 根据权利要求1所述的一种采用固化材料进行深层搅拌的施工设备,其特征在于,所述传送设备包括传送带,防护罩,传送带一端靠近地面进行固化材料装载,传送带另一端固定在材料供应仓上部的进料口处,传送带上设置有防护罩,防护罩横截面呈半圆形,与传送带共同组成密闭通道。The construction equipment for deep mixing using solidified materials according to claim 1, characterized in that the conveying equipment includes a conveyor belt, a protective cover, one end of the conveyor belt is close to the ground for loading the solidified material, and the other end of the conveyor belt is fixed in the material supply bin At the upper feeding port, a protective cover is provided on the conveyor belt, the cross section of the protective cover is semicircular, and the conveyor belt forms a closed channel together.
  7. 一种采用固化材料进行深层搅拌的施工设备施工方法,其特征在于,采用如权利要求1所述的一种采用固化材料进行深层搅拌的施工设备,按照如下方法进行施工:A construction method for construction equipment using solidified materials for deep mixing, characterized in that the construction equipment using solidified materials for deep mixing according to claim 1 is used for construction according to the following method:
    步骤1:检查设备安全性,对机械进行组装和试运转;Step 1: Check the safety of the equipment, assemble and test the machine;
    步骤2:加固放置机体位置的基础,使搅拌机轴保持垂直,调节桩机支腿油缸使钻机钻杆与水平面呈90度夹角,倾斜角度误差不大于0.5%;Step 2: Reinforce the foundation for placing the machine body, keep the mixer shaft vertical, adjust the pile machine leg cylinder so that the drill rod of the drill rig is at a 90-degree angle with the horizontal plane, and the inclination angle error is not more than 0.5%;
    步骤3:将降阻材料装入存储箱,开启电动机采用外部搅拌钻杆带动外部搅拌叶片对降阻材料进行搅拌,转速100r/min-2000r/min,连续搅拌3-10min,间隔1-5min之后反向搅拌3-10min;Step 3: Load the resistance-reducing material into the storage box, turn on the motor and use the external stirring drill rod to drive the external stirring blade to stir the resistance-reducing material at a speed of 100r/min-2000r/min, continuous stirring for 3-10min, after an interval of 1-5min Reverse stirring for 3-10min;
    步骤4:将水倒入水箱,开启增压泵,降阻材料浓度控制在0-5%,通过高压胶管输送到1号通道,降阻材料的注入压强范围为0.01-1.0MPa;Step 4: Pour water into the water tank, turn on the booster pump, control the concentration of the resistance-reducing material at 0-5%, and deliver it to channel 1 through the high-pressure hose. The injection pressure of the resistance-reducing material is in the range of 0.01-1.0MPa;
    步骤5:将固化材料通过空气压力机的高气压输送到2号通道,空气压力机的压强为0.1-5.0MPa;Step 5: The solidified material is delivered to the No. 2 channel through the high air pressure of the air press, and the pressure of the air press is 0.1-5.0 MPa;
    步骤6:开启钻机,正转预搅下沉,下钻速度控制在0.5m/min~3.0m/min,控制钻速在5r/min~50r/min,观察增压泵和空气压力机上压强表读数,随钻杆下钻增压泵以0.01MPa-0.1MPa为梯度逐渐增加,同时空气压力机以0.01MPa-0.1MPa为梯度逐渐增加;Step 6: Turn on the drilling rig, rotate forward, pre-stir and sink, control the drilling speed at 0.5m/min~3.0m/min, control the drilling speed at 5r/min~50r/min, observe the pressure gauge on the booster pump and the air pressure machine Readings, as the drill pipe is drilled, the booster pump gradually increases with a gradient of 0.01MPa-0.1MPa, while the air compressor gradually increases with a gradient of 0.01MPa-0.1MPa;
    步骤7:随着钻杆正转即顺时针转动,固定栓沿着滑槽移动,当移动到滑槽的端部,转换器上的小喷口和1号大喷口与钻杆连通,同时,2号大喷口关闭;Step 7: As the drill pipe rotates clockwise, the fixing bolt moves along the chute. When it moves to the end of the chute, the small nozzle on the converter and the large nozzle No. 1 are connected to the drill pipe. At the same time, 2 No. large spout is closed;
    步骤8:当钻至接近设计深度时,应用低速慢转钻进,钻机原位转动1-2min,待下钻到设计深度时,反向旋转即逆时针转动并提升钻头,提升速度为0.2~2.0m/min,控制转速为5r/min~30r/min,喷射压力控制在0.2~5MPa,此时,固定栓沿着滑槽移动,当移动到滑槽的端部,转换器上的2号大喷口与钻杆连通,同时,小喷口和1号大喷口关闭;Step 8: When the drilling is close to the design depth, apply low-speed slow-rotation drilling, and the drill rig rotates in situ for 1-2 minutes. When the drill reaches the design depth, reverse rotation, that is, rotate counterclockwise and raise the drill bit at a speed of 0.2~ 2.0m/min, the control speed is 5r/min~30r/min, and the injection pressure is controlled at 0.2~5MPa. At this time, the fixing bolt moves along the chute. When it moves to the end of the chute, No. 2 on the converter The large nozzle is connected with the drill pipe, and at the same time, the small nozzle and the No. 1 large nozzle are closed;
    步骤9:当提升到设计标高后,原地搅拌1-5min;将钻头提升至地面以上,关闭空气压缩机和增压泵,施工完毕。Step 9: After raising to the design elevation, stir on the spot for 1-5 minutes; raise the drill bit above the ground, turn off the air compressor and booster pump, and the construction is completed.
  8. 根据权利要求7所述的一种采用固化材料进行深层搅拌的施工设备施工方法,其特征在于,所述材料为水泥或粉煤灰等粉体固化剂,水泥为普通硅酸盐水泥,强度等级为42.5,水泥掺量范围为8-30%,颗粒粒径范围为1-60μm。The construction method of construction equipment using solidified materials for deep mixing according to claim 7, characterized in that the material is a powder solidifying agent such as cement or fly ash, and the cement is ordinary Portland cement with a strength grade It is 42.5, the cement content range is 8-30%, and the particle size range is 1-60μm.
PCT/CN2020/101638 2019-12-29 2020-07-13 Construction apparatus for deep stirring by using curing material and construction method therefor WO2021135156A1 (en)

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CN109972612A (en) * 2019-05-10 2019-07-05 北京中岩大地科技股份有限公司 Major diameter deep layer mixed composite pile intelligence construction system and its application method
CN110306545A (en) * 2019-07-26 2019-10-08 北京中岩大地科技股份有限公司 A kind of uniaxial stirring drill bit that multidirectional stirring can be achieved
CN110847147A (en) * 2019-12-29 2020-02-28 北京中岩大地科技股份有限公司 Construction equipment for deep stirring by adopting curing material and construction method thereof

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