Ultra-deep concrete pouring method and equipment thereof

Abstract

The invention discloses an ultra-deep concrete pouring method and equipment thereof. The method comprises the steps that a pouring guide pipe capable of stirring concrete is placed in a formed ultra-deep groove hole; an isolation ball is placed in a pouring guide pipe capable of stirring concrete; concrete is poured into the pouring guide pipe where the isolation balls are placed, so that the concrete is stirred in the pouring guide pipe, and after the speed is reduced, the concrete falls to the bottom of the groove hole along with the isolation balls until a wall is poured in the groove hole; wherein the depth of the ultra-deep groove hole is larger than 150 meters. According to the method, the phenomenon of concrete segregation caused by rapid falling when the concrete is poured in the ultra-deep slotted hole is prevented, the quality of a poured wall is improved, and quality accidents are reduced.

Description

Technical Field

[0001] This invention relates to the field of water conservancy engineering technology, and in particular to a method and equipment for ultra-deep concrete pouring. Background Art

[0002] In existing technologies, when concrete is poured to form a seepage barrier, the concrete is in a free-fall state in the pouring pipe. When the pouring depth is too deep, such as greater than 150m, problems such as concrete segregation will occur. Concrete segregation will greatly affect the quality of the poured wall and cause quality accidents. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned problems and provide a method and equipment for ultra-deep concrete pouring, which prevents concrete segregation caused by rapid falling during pouring in ultra-deep trenches, improves the quality of the poured wall, and reduces quality accidents.

[0004] To achieve the above-mentioned objectives of the present invention, one aspect of the present invention provides a method for ultra-deep concrete pouring, comprising:

[0005] A concrete mixing pipe is lowered into the formed ultra-deep trench.

[0006] Place an isolation ball inside the pouring conduit that can mix concrete;

[0007] Concrete is poured into the pouring pipe into which the isolation ball is placed, so that the concrete is stirred in the pouring pipe and slowed down as it falls to the bottom of the slot with the isolation ball until it is poured into the slot to form a wall.

[0008] The ultra-deep slot refers to a slot with a depth greater than 150 meters.

[0009] Preferably, the mixing of concrete within the pouring conduit includes:

[0010] The concrete falling inside the pouring pipe collides continuously with the spiral body installed inside the pouring pipe and extending in a spiral shape along its axis.

[0011] The concrete that collides with the spiral changes its falling direction and mixes with other concrete after colliding with it.

[0012] The mixed concrete slows down as it falls through the pouring duct.

[0013] Alternatively, the mixing of concrete within the pouring conduit may include:

[0014] The concrete falling inside the pouring pipe collides with the propellers that are spaced apart inside the pouring pipe, causing the propellers to rotate automatically under the impact of the concrete.

[0015] Automatically rotating propellers change the falling direction of concrete and mix it with other concrete after collision;

[0016] The mixed concrete slows down as it falls through the pouring duct.

[0017] Alternatively, the mixing of concrete within the pouring conduit may include:

[0018] As the concrete falls through the pouring duct, the rotation of the electric propeller or electric spiral blades installed inside the pouring duct is controlled.

[0019] Rotating propellers or propeller blades change the direction of concrete's fall and mix it with other concrete after collision.

[0020] The mixed concrete slows down as it falls through the pouring duct.

[0021] Preferably, as the concrete falls through the pouring duct, the rotation of an electric propeller or electric spiral blade installed inside the pouring duct is controlled, including a step of detecting the current segregation rate of the concrete poured through the pouring duct.

[0022] Preferably, after detecting the current segregation rate of the concrete poured through the pouring duct, if the detected current segregation rate of the concrete does not meet the preset requirements, the rotation of the electric propeller or electric spiral blade installed in the pouring duct is controlled.

[0023] Preferably, detecting the current segregation rate of concrete poured through a pouring duct includes:

[0024] The downward speed of the isolation ball is detected by at least two ball position sensors installed inside the pouring pipe, and the downward speed of the isolation ball is used as the falling speed of the concrete.

[0025] The controller obtains the current segregation rate of the concrete based on the pre-set mapping relationship between the concrete segregation rate and the concrete falling speed.

[0026] Preferably, if the detected current segregation rate of the concrete does not meet the preset requirements, controlling the rotation of the electric propeller or electric spiral blade installed in the pouring duct includes:

[0027] The detected current segregation rate of concrete is compared with the preset segregation rate of concrete;

[0028] If the comparison shows that the current segregation rate of the concrete does not meet the preset segregation rate requirement, then control the rotation of the electric propeller or electric spiral blade installed in the pouring duct.

[0029] Preferably, if the comparison shows that the current segregation rate of the concrete does not meet the preset segregation rate requirement, then controlling the rotation of the electric propeller or electric spiral blade installed in the pouring duct includes:

[0030] If the comparison shows that the current segregation rate of the concrete does not meet the preset segregation rate requirement, determine the difference between the current segregation rate of the concrete and the preset segregation rate of the concrete.

[0031] The controller obtains the speed of the electric propeller or electric propeller blade corresponding to the current segregation rate difference based on the pre-set mapping relationship between the segregation rate difference and the speed of the electric propeller or electric propeller blade.

[0032] The controller controls the rotational speed of the electric propeller or electric rotor blades, causing them to rotate at the obtained speed to mix the concrete.

[0033] Furthermore, the present invention also provides an ultra-deep concrete pouring device for the above method, comprising: a pouring conduit for lowering into the formed ultra-deep trench, capable of mixing concrete; and an isolation ball placed inside the pouring conduit; wherein concrete is poured into the pouring conduit containing the isolation ball, causing the concrete to be mixed within the pouring conduit, and after slowing down, it falls to the bottom of the trench with the isolation ball until a wall is formed within the trench; wherein the ultra-deep trench refers to a trench with a depth greater than 150 meters.

[0034] Preferably, the concrete pouring conduit includes: multiple pipes connected end to end; a mixing device for mixing concrete disposed on the inner wall of the pipe; or, the concrete pouring conduit includes: multiple pipes arranged vertically; a joint for connecting adjacent pipes; and a mixing device for mixing concrete disposed on the inner wall of the joint.

[0035] Compared with the prior art, the ultra-deep concrete pouring method and equipment of the present invention have the following advantages:

[0036] 1. The present invention provides a method and equipment for ultra-deep concrete pouring, which prevents concrete segregation caused by rapid falling during pouring in ultra-deep trenches, improves the quality of the poured wall, and reduces quality accidents.

[0037] 2. The method of the present invention involves placing a concrete-mixing pouring pipe inside the formed ultra-deep trench, and placing an isolation ball inside the concrete-mixing pouring pipe. Therefore, when pouring concrete into the pouring pipe containing the isolation ball, the concrete can be mixed and its speed slowed down inside the pouring pipe. As the isolation ball slowly falls to the bottom of the trench, it effectively prevents the concrete from segregating due to free fall in the ultra-deep trench, thereby improving the quality of the wall cast in the trench.

[0038] The present invention will now be described in detail with reference to the accompanying drawings. Attached Figure Description

[0039] Figure 1a A schematic diagram of the first structure of the ultra-deep concrete pouring equipment of the present invention;

[0040] Figure 1b This is a schematic diagram of the structure of the present invention, which includes a stirring device installed inside the casting guide pipe;

[0041] Figure 1c This is a schematic diagram of the structure of the present invention, which includes a stirring device installed inside the joint of the casting conduit.

[0042] Figure 2 This is a top view of the present invention with a first stirring device installed inside the connector;

[0043] Figure 3 This is a schematic diagram of the structure of a propeller used in the first stirring device of the present invention;

[0044] Figure 4 This is a perspective view of a propeller used in the first stirring device of the present invention;

[0045] Figure 5 This is a schematic diagram of another type of propeller used in the first stirring device of the present invention;

[0046] Figure 6 This is a top view of the present invention with a second stirring device installed inside the joint;

[0047] Figure 7 This is a perspective view of a propeller used in the second type of stirring device of the present invention;

[0048] Figure 8 This is a top view of the present invention with a third stirring device installed inside the joint;

[0049] Figure 9 This is a perspective view of a propeller used in the third type of stirring device of the present invention;

[0050] Figure 10 This is a top view of the present invention with a fourth stirring device installed inside the connector;

[0051] Figure 11 This is a left view of the present invention with a fourth stirring device installed inside the connector;

[0052] Figure 12 A top view of the present invention with a fifth stirring device installed inside the connector;

[0053] Figure 13 The left view of the present invention with a fifth stirring device installed inside the connector;

[0054] Figure 14 This is the electrical schematic diagram of the stirring device of the present invention;

[0055] Figure 15This is a perspective view of the sixth stirring device provided in the connector of the present invention;

[0056] Figure 16 This is a schematic diagram of the second structure of the ultra-deep concrete pouring equipment of the present invention;

[0057] Figure 17 This is a flowchart of the ultra-deep concrete pouring method of the present invention. Detailed Implementation

[0058] like Figures 1a-16 The figures show different structural schematic diagrams of the ultra-deep concrete pouring equipment of the present invention, as well as a schematic diagram of the mixing device. As can be seen from the figures, the ultra-deep concrete pouring equipment of the present invention includes: a pouring conduit for lowering into the formed ultra-deep trench, capable of mixing concrete; and an isolation ball 9 placed inside the pouring conduit. Concrete is poured into the pouring conduit containing the isolation ball, causing the concrete to be mixed within the conduit. After the mixing ball slows down, the concrete falls to the bottom of the trench until a wall is formed within the trench. The ultra-deep trench refers to a trench with a depth greater than 150 meters.

[0059] The concrete mixing pouring conduit of this invention can be adopted as follows: Figure 1b The structure shown includes: multiple pipes 10 connected end-to-end; and a mixing device 1a mounted on the inner wall of the pipes to mix the concrete and slow its descent. Alternatively, the concrete mixing duct can be designed as follows: Figure 1c The structure shown includes: a plurality of pipes 10 arranged vertically in sequence; a joint 1 for connecting adjacent pipes vertically; and a mixing device 1a disposed on the inner wall of the joint for mixing concrete to slow down the falling speed of the concrete.

[0060] This invention involves placing a pouring conduit equipped with a mixing device inside a formed ultra-deep trench. An isolation ball is then placed inside the pouring conduit capable of mixing concrete. When concrete is poured into the pouring conduit containing the isolation ball, the concrete is mixed by the mixing device within the conduit, slowing its descent speed. The concrete then slowly falls to the bottom of the trench along with the isolation ball, effectively preventing segregation of the concrete due to rapid free fall within the ultra-deep trench and improving the quality of the wall poured within the trench.

[0061] In its design, the stirring device of this invention can be a spiral body 8 extending in a spiral shape along the inner wall of the tube (see...). Figure 15 It can also be a propeller assembly (such as one installed on the inner wall of the pipe or joint) that can automatically rotate under the impact of falling concrete. Figure 2 (As shown), it can also be a propeller assembly (such as one that can rotate under the drive of a motor) installed on the inner wall of the tube or the inner wall of the joint. Figures 6-9As shown), it can also be a helical blade assembly (such as...) that can rotate under the drive of a motor and is installed on the inner wall of the pipe or the inner wall of the joint. Figures 10-12 , Figure 16 As shown), the propeller assembly and the helical blade assembly can also be provided at intervals on the inner wall of the pipe or joint. When using propeller assembly or helical blade assembly, multiple sets of assemblies can be used, and the multiple sets of assemblies can be arranged at equal intervals along the axial direction of the casting guide. Preferably, there are at least two sets of assemblies, that is, the above-mentioned assemblies are provided on the inner walls of at least two pipes or joints located at the bottom of the slot.

[0062] The structure of each stirring device of the present invention will be described in detail below.

[0063] The stirring device of the present invention can be adopted as follows: Figure 15 The spiral structure shown refers to the presence of a spiral body 8 extending axially on the inner wall of each pipe body. The spiral bodies on multiple pipe bodies have the same direction of rotation and can be connected end-to-end, allowing the spiral body to extend to the bottom of the casting conduit formed by connecting multiple pipe bodies vertically. In the design, the spiral body protrudes towards the center of the pipe body.

[0064] Concrete falling from the pouring duct collides continuously with a spiral extending inside the duct. The concrete that collides with the spiral changes its falling direction and mixes with other concrete after colliding with it. The mixed concrete slows down as it falls through the pouring duct.

[0065] Alternatively, the stirring device of the present invention can be adopted as follows: Figure 2 The structure of the first type of self-rotating propeller assembly shown includes: a pair of support seats 2 fixedly installed on the inner wall of the connector (or the inner wall of the tube) and extending radially toward the center of the connector (or tube); a rotating shaft 3, the two ends of which are rotatably connected to the pair of support seats, the rotating shaft being an arc-shaped bent shaft, the center of which may be located at the center of the connector; and a propeller 4 fixedly installed on the rotating shaft, the propeller also having an arc-shaped bend similar to that of the rotating shaft. The propeller can be, for example, […]. Figure 3 , Figure 4 The structure shown includes a bushing 41 for fixed connection to the shaft and three blades 42 fixedly mounted at equal angles outside the bushing. The three blades are inclined in the same direction around the center of the bushing, and the blade thickness is approximately equal to the length of the shaft. Alternatively, the propeller can also adopt a design as shown below. Figure 5 The structure of the four blades shown.

[0066] Alternatively, the self-rotating stirring device of the present invention can also adopt a second propeller assembly structure (not shown in the figure), including: a pair of support seats 2 fixedly installed on the inner wall of the connector (or the inner wall of the tube) and extending parallel to the interior of the connector (or tube); a rotating shaft 3 whose two ends are respectively rotatably connected to the pair of support seats, the rotating shaft being a straight shaft; and a propeller 4 fixedly installed on the rotating shaft. The propeller includes a bushing 41 for fixed connection with the rotating shaft and three blades 42 fixedly installed at equal angles outside the bushing (see [reference]). Figure 7 The three blades are inclined in the same direction around the center of the bushing, and the blade thickness is roughly equivalent to the length of the shaft. Alternatively, the propeller can have two or more blades. As can be seen, this structure involves setting the support base in the first type of self-rotating propeller assembly to extend parallel to the inside of the joint (or tube), using a straight shaft, and employing a straight bushing for the propeller.

[0067] Using the aforementioned self-rotating mixing device, when concrete is poured into the pouring duct by the concrete pouring device (which is a prior art concrete pouring device, and will not be described in detail here), the concrete falls due to its own weight. During the falling process, the concrete will collide with the self-rotating propellers that are spaced apart in the pouring duct. The propellers will automatically rotate relative to the pouring duct under the action of the concrete collision. The automatically rotating propellers change the falling direction of the concrete and mix it with other concrete after collision. The mixed concrete slows down and falls in the pouring duct.

[0068] Alternatively, the stirring device of the present invention can be adopted as follows: Figure 6 The electric propeller assembly shown is driven by a motor and has a structure similar to that of the second type of self-rotating stirring device described above. The difference is that in this embodiment, a motor 5 is fixedly installed on one of the two support seats 2. The output shaft of the motor extends toward the opposite support seat. One end of the shaft is connected to the output shaft of the motor, and the other end is rotatably connected to the opposite support seat.

[0069] Alternatively, the stirring device of the present invention can be adopted as follows: Figure 8 The electric propeller assembly shown, which rotates under the drive of a motor, has a structure similar to that described above. Figure 6 The structure is similar to that of the electric propeller assembly, except that in this embodiment, the outer edges of the three blades 42, which are fixed at equal angles outside the straight shaft sleeve, are arc-shaped (see [reference]). Figure 9 The blades in this embodiment can increase the contact area between the concrete and the blades, thereby increasing the effect of slowing down the concrete flow.

[0070] When the mixing device uses the above-mentioned electric propeller assembly, after the concrete falls into the pouring duct, the electric propeller installed in the pouring duct is controlled to rotate, so that the rotating propeller changes the falling direction of the concrete and makes it collide with other concrete and mix. The mixed concrete slows down and falls into the pouring duct.

[0071] It should be noted that, Figure 2 , Figure 6 , Figure 8 This diagram only shows one electric propeller assembly installed on the inner wall of the joint. In application, multiple assemblies can also be installed at equal angles on the inner wall of the joint (or pipe), such as a pair of electric propeller assemblies installed opposite each other. When installing electric propeller assemblies, they can be installed on each pipe or joint, or on pipes or joints after several pipes, or only on the two lowest pipes or joints.

[0072] Alternatively, the stirring device of the present invention can be adopted as follows: Figures 10-13 The electrically driven helical blade assembly shown can be designed with four helical blade assemblies evenly distributed circumferentially on the inner wall of the tube or joint. The helical blade assemblies can be designed as follows: Figure 10 , Figure 11 The structure shown includes: a motor 5 fixedly mounted on the inner wall of a pipe or joint, its output shaft extending radially toward the center along the pipe or joint; and a helical blade 7 directly or indirectly fixedly mounted on the motor output shaft. Alternatively, the helical blade assembly can be as follows: Figure 12 , Figure 13 The structure shown includes: a motor 5 fixedly installed on the inner wall of the pipe or joint, with its output shaft extending upward (not shown) or downward along the axial direction parallel to the pipe or joint; and a helical blade 7 directly or indirectly fixedly installed on the motor output shaft. When the motor rotates, it drives the helical blade to rotate, thereby mixing the concrete falling from above and slowing down the falling speed of the concrete.

[0073] When the mixing device uses the above-mentioned electric spiral blade assembly, when the concrete falls in the pouring duct, the motor of the electric spiral blade assembly installed in the pouring duct is controlled to rotate, so that the spiral blade rotates, changes the falling direction of the concrete and makes it collide with other concrete and mixes. The mixed concrete slows down and falls in the pouring duct.

[0074] During the design process, the parameters of each component in the propeller or propeller blade assembly are reasonably determined according to the actual situation to ensure that the falling concrete can be mixed and its falling speed can be slowed down, while also preventing it from getting stuck easily.

[0075] Furthermore, to ensure that no segregation occurs when the concrete falls into the ultra-deep trench along the pouring duct, this invention, based on the aforementioned electric helical blade assembly and electric propeller assembly, further controls the rotation of the electric propeller or electric helical blade installed inside the pouring duct according to the current segregation rate of the concrete poured through the pouring duct. Correspondingly, the ultra-deep concrete pouring equipment of this invention also includes: multiple spherical position sensors 6 installed inside the pouring duct (see...). Figure 16 This device is used to detect the descent speed of the isolation ball within the pouring duct during the initial stage of concrete pouring. Position sensors, such as contact sensors or pressure sensors, determine the position of the isolation ball by contacting it. In actual operation, the controller can assign a different ID to each ball position sensor to determine the ball's position within the pouring duct based on the sensor's ID.

[0076] In addition, the ultra-deep concrete pouring equipment of the present invention also includes: a controller connected to multiple spherical position sensors, which controls the rotational speed of the propeller in the electric propeller assembly or the rotor blade in the electric rotor blade according to a pre-set correspondence between the concrete falling speed and the concrete segregation rate.

[0077] See Figure 14 The controller of the present invention includes: a ball sliding speed calculation module whose input end is connected to multiple ball position sensors, used to calculate the sliding speed of the isolation ball in the pouring pipe based on the position change of the isolation ball detected by two adjacent ball position sensors and the time taken, the sliding speed of the isolation ball being used as the falling speed of the concrete; a concrete segregation rate determination module, used to obtain the current segregation rate of the concrete and the segregation rate difference between it and the preset segregation rate of the concrete (the preset segregation rate of the concrete refers to the segregation rate of the concrete that meets the pouring requirements) based on a preset mapping relationship between the concrete segregation rate and the concrete falling speed; and a speed control module, used to determine whether an electric propeller or electric spiral blade needs to work to mix the concrete based on the segregation rate difference, and if an electric propeller or electric spiral blade needs to work, to generate a control command based on the mapping relationship between the segregation rate difference and the speed of the electric propeller or electric spiral blade to control the spiral blade or propeller to adjust the speed.

[0078] The controller is pre-programmed with a mapping relationship between concrete segregation rate and concrete falling speed, and a mapping relationship between the segregation rate difference and the rotational speed of the electric propeller or electric turbine blades. These mapping relationships were obtained through extensive experimental data and practical engineering experience before formal construction.

[0079] In application, after obtaining the downward speed of the isolation ball, the controller determines it as the falling speed of the concrete. Based on the mapping relationship table between concrete segregation rate and concrete falling speed, it finds the concrete segregation rate corresponding to the falling speed. Then, it compares the concrete segregation rate with the segregation rate of the concrete that meets the pouring requirements, determines the segregation rate difference, and then determines whether the electric propeller or electric propeller blade needs to work based on the mapping relationship table between the segregation rate difference and the rotation speed of the electric propeller or electric propeller blade. If it needs to work, the electric propeller or electric propeller blade is adjusted according to the rotation speed mapping relationship table.

[0080] When determining whether an electric propeller or electric spiral blade is needed to mix concrete based on the segregation rate difference, the rotation speed of the propeller or spiral blade can be adjusted according to the magnitude of the segregation rate difference.

[0081] In this invention, when the above-mentioned scheme of controlling the rotation of the electric propeller or electric spiral blade installed in the pouring duct based on the current segregation rate of the concrete poured through the pouring duct is adopted, after forming a slot through drilling and cleaning and lowering the pouring duct equipped with the electric propeller assembly or electric spiral blade assembly and a ball position sensor, an isolation ball is placed in the pouring duct, and the concrete pouring device is connected to the pouring duct. Then, the current segregation rate of the concrete is obtained according to the downward speed of the isolation ball lowered through the pouring duct, and the rotation of the electric propeller or electric spiral blade is controlled accordingly to slow down the descent speed of the concrete, so that the concrete follows the isolation ball and slowly falls to the bottom of the slot until it is poured into a seepage barrier wall.

[0082] It should be noted that the isolation ball of this invention is a flexible isolation ball with a certain degree of elasticity, such as a volleyball (air pressure controlled at 20% to 35% of the standard air pressure of 0.3 kg / cm², i.e., 0.06 to 0.105 kg / cm²), to prevent it from getting stuck when sliding down inside the pouring conduit. In addition, an anti-adhesion material is coated on the inner wall of the pouring conduit to reduce the friction between the concrete and the conduit, reduce adhesion, and increase the smoothness of the pouring process. The anti-adhesion material can be an existing technology material, such as the SCU-SG-PDMS-III type anti-adhesion material developed by Sichuan University, which has hydrophobic and anti-adhesion properties and can reduce the adhesion of concrete to the inner and outer walls of the conduit.

[0083] In summary, the present invention adopts a scheme of setting a mixing device inside the pouring pipe to prevent the poured concrete from falling vertically and rapidly in the 150m pouring pipe, thus avoiding concrete segregation. Concrete segregation will reduce the strength of the formed seepage barrier. When the isolation ball slides out from the bottom of the pouring pipe, the concrete has already filled the pouring pipe, and then the concrete connection pouring operation is carried out, so that the concrete can be poured smoothly in the slot.

[0084] In addition to providing the aforementioned ultra-deep concrete pouring equipment, this invention also provides a method for ultra-deep concrete pouring using the aforementioned equipment, such as... Figure 17 As shown, the ultra-deep concrete pouring method of the present invention includes:

[0085] A concrete mixing pipe is lowered into an ultra-deep trench with a depth greater than 150 meters.

[0086] Place an isolation ball inside the pouring conduit that can mix concrete;

[0087] Concrete is poured into the pouring pipe through which the isolation ball is placed, causing the concrete to be stirred within the pouring pipe. As the concrete slows down, it falls to the bottom of the slot along with the isolation ball until it is poured into the slot to form a wall.

[0088] The ultra-deep concrete pouring method of the present invention can adopt the following methods, including:

[0089] A concrete mixing duct is placed in the formed ultra-deep trench. The duct is formed by connecting multiple tubes with spiral bodies extending in a spiral shape along the axial direction on the inner wall. The spiral bodies on the inner wall of the duct formed by connecting multiple tubes end to end can extend from the top to the bottom.

[0090] Place an isolation ball inside the aforementioned concrete mixing conduit;

[0091] Connect the concrete pouring device to the upper end of the pouring pipe to allow concrete to enter the pouring pipe.

[0092] Concrete supported by an isolation ball and sliding down the pouring pipe is partially driven by a spiral. As it no longer falls vertically, its direction of fall changes, and it mixes with other concrete after colliding with it. Compared to concrete falling vertically in existing technologies, this method uses a spiral to slow down the falling concrete that slides down the spiral and mixes with other concrete, thus preventing segregation.

[0093] Alternatively, the ultra-deep concrete pouring method of the present invention can adopt the following method, including:

[0094] A concrete mixing duct is lowered into the formed ultra-deep trench. This duct employs a method such as... Figure 1b The structure shown includes: multiple pipes connected end-to-end; and a mixing device installed on the inner wall of the pipes to mix the concrete and slow its descent. Alternatively, the pouring conduit may include components that can be used as... Figure 1c The structure shown includes: multiple pipes arranged vertically; a joint for connecting adjacent pipes; and a mixing device installed on the inner wall of the joint to mix the concrete and slow down its descent.

[0095] The stirring device used in this method can be, for example, Figure 2 , Figure 6 , Figure 8 , Figure 10 , Figure 12 For any of the structures in the diagram, the concrete pouring methods of each scheme will be described below, taking only the example of adjacent pipes of the pouring conduit being connected by a joint and a mixing device being installed on the joint.

[0096] The following is placed inside the formed ultra-deep trench: Figure 2 As shown above, after constructing the pouring conduit with a joint and a self-rotating propeller assembly installed on the joint, an isolation ball is placed inside the pouring conduit. Concrete is then injected into the pouring conduit using a concrete pouring device connected to the conduit. The concrete falling inside the pouring conduit and supported by the isolation ball collides with the propellers spaced apart within the conduit, causing the propellers to rotate automatically under the impact of the concrete. The automatically rotating propellers change the falling direction of the concrete and mix it with other concrete after collision. The mixed concrete slows down as it falls inside the pouring conduit.

[0097] Alternatively, when placing such as within the formed ultra-deep slot... Figure 6 , Figure 8 , Figure 10 , Figure 12 As shown above, after the pouring conduit with a joint and an electric propeller assembly or electric helical blade is installed on the joint, an isolation ball is placed inside the pouring conduit. Concrete is then injected into the pouring conduit using a concrete pouring device connected to the pouring conduit. As the concrete falls inside the pouring conduit, the electric propeller or electric helical blade installed inside the pouring conduit is controlled to rotate (i.e., the motor is controlled to rotate to drive the propeller or helical blade to rotate), which agitates the concrete, changes its vertical falling direction, and causes it to collide with and mix with other concrete. The mixed concrete then falls at a slower speed inside the pouring conduit.

[0098] Alternatively, when placing such as within the formed ultra-deep slot... Figure 16 The image shows a connector, with a device installed on the connector as shown. Figure 6 , Figure 8 , Figure 10 , Figure 12The above-described electric propeller assembly or electric propeller blade, along with a pouring duct equipped with multiple spherical position sensors on its inner wall (only two are shown in the figure, located on the penultimate section of the tube at the bottom of the slot), involves placing an isolation ball inside the pouring duct. Concrete is then injected into the pouring duct using a concrete pouring device connected to it. As the concrete falls through the pouring duct, the current segregation rate of the concrete is detected. If the detected current segregation rate does not meet the preset requirements, the electric propeller or electric propeller blade installed inside the pouring duct is controlled to rotate to agitate the concrete, thereby changing its vertical falling direction and causing it to collide with and mix with other concrete. The mixed concrete then falls at a slower speed within the pouring duct.

[0099] The detection of the current segregation rate of concrete poured through the pouring pipe includes:

[0100] The downward speed of the isolation ball is detected by at least two ball position sensors installed inside the pouring pipe, and the downward speed of the isolation ball is used as the falling speed of the concrete.

[0101] The controller obtains the current segregation rate of the concrete based on the pre-set mapping relationship between the concrete segregation rate and the concrete falling speed.

[0102] If the detected current segregation rate of the concrete does not meet the preset requirements, controlling the rotation of the electric propeller or electric spiral blade installed in the pouring duct includes:

[0103] The detected current segregation rate of concrete is compared with the preset segregation rate of concrete;

[0104] If the comparison shows that the current segregation rate of the concrete does not meet the preset segregation rate requirement, then control the rotation of the electric propeller or electric spiral blade installed in the pouring duct, including:

[0105] If the comparison shows that the current segregation rate of the concrete does not meet the preset segregation rate requirement, determine the difference between the current segregation rate of the concrete and the preset segregation rate of the concrete.

[0106] The controller determines whether the electric propeller or electric auger blade needs to work to mix the concrete based on the pre-set mapping relationship between the segregation rate difference and the rotation speed of the electric propeller or electric auger blade. If the electric propeller or electric auger blade needs to work, the controller determines the rotation speed of the electric propeller or electric auger blade corresponding to the current segregation rate difference.

[0107] The controller controls the rotational speed of the electric propeller or electric rotor blades, causing them to rotate at the obtained speed to mix the concrete.

[0108] The controller connects to multiple spherical position sensors and controls the rotational speed of the propeller in the electric propeller assembly or the rotor blades in the electric rotor blades based on the pre-set correspondence between the concrete falling speed and the concrete segregation rate.

[0109] The controller of this invention can be adopted Figure 14 The structure includes: a ball sliding speed calculation module whose input end is connected to multiple ball position sensors, used to calculate the sliding speed of the isolation ball in the pouring pipe based on the position change of the isolation ball detected by two adjacent ball position sensors and the time taken, the sliding speed of the isolation ball being used as the falling speed of the concrete; a concrete segregation rate determination module, used to obtain the current segregation rate of the concrete and the difference between it and the preset segregation rate of the concrete (the preset segregation rate of the concrete refers to the segregation rate of the concrete that meets the pouring requirements) based on a pre-set mapping relationship between the concrete segregation rate and the concrete falling speed; and a speed control module, used to generate control commands based on the segregation rate difference and its mapping relationship with the speed of the electric propeller or electric rotor blade, to control the rotor blade or propeller to adjust the speed.

[0110] The pre-set mapping relationship between concrete segregation rate and concrete falling speed, and the mapping relationship between segregation rate difference and rotational speed of electric propeller or electric spiral blade are all stored in the database and were obtained through a large amount of experimental data and practical engineering experience before formal construction.

[0111] When determining whether an electric propeller or electric spiral blade is needed to mix concrete based on the segregation rate difference, the rotation speed of the propeller or spiral blade can be adjusted according to the magnitude of the segregation rate difference.

[0112] In summary, the method of this invention uses a mixing device to solve the problem of concrete segregation caused by rapid falling when concrete is poured in ultra-deep trenches; it uses flexible isolation balls to solve the problem of isolation balls getting stuck in the pouring conduit in existing technology; and it coats the inner wall of the pouring conduit with an anti-adhesion material to reduce the friction between the concrete and the conduit, reduce adhesion, and increase the smoothness of the pouring process.

[0113] Although the present invention has been described in detail above, the present invention is not limited thereto. Those skilled in the art can make modifications based on the principles of the present invention. Therefore, all modifications made in accordance with the principles of the present invention should be understood as falling within the protection scope of the present invention.

Claims

1. A method for ultra-deep concrete pouring, comprising: A concrete mixing pipe is lowered into the formed ultra-deep trench. Place an isolation ball inside the pouring conduit that can mix concrete; Concrete is poured into the pouring pipe into which the isolation ball is placed, so that the concrete is stirred in the pouring pipe and slowed down as it falls to the bottom of the slot with the isolation ball until it is poured into the slot to form a wall. The ultra-deep slot refers to a slot with a depth greater than 150 meters.

2. The ultra-deep concrete pouring method according to claim 1, wherein the concrete is mixed within the pouring conduit, comprising: The concrete falling inside the pouring pipe collides continuously with the spiral body installed inside the pouring pipe and extending in a spiral shape along its axis. The concrete that collides with the spiral changes its falling direction and mixes with other concrete after colliding with it. The mixed concrete slows down as it falls through the pouring duct.

3. The ultra-deep concrete pouring method according to claim 1, wherein the concrete is mixed within the pouring conduit, comprising: The concrete falling inside the pouring pipe collides with the propellers that are spaced apart inside the pouring pipe, causing the propellers to rotate automatically under the impact of the concrete. Automatically rotating propellers change the falling direction of concrete and mix it with other concrete after collision; The mixed concrete slows down as it falls through the pouring duct.

4. The ultra-deep concrete pouring method according to claim 1, wherein the concrete is mixed within the pouring conduit, comprising: As the concrete falls through the pouring duct, the rotation of the electric propeller or electric spiral blades installed inside the pouring duct is controlled. Rotating propellers or propeller blades change the direction of concrete's fall and mix it with other concrete after collision. The mixed concrete slows down as it falls through the pouring duct.

5. The ultra-deep concrete pouring method according to claim 4, wherein when the concrete falls in the pouring duct, the rotation of the electric propeller or electric spiral blade installed in the pouring duct is controlled, including the step of detecting the current segregation rate of the concrete poured through the pouring duct.

6. In the ultra-deep concrete pouring method according to claim 5, after detecting the current segregation rate of the concrete poured through the pouring duct, if the detected current segregation rate of the concrete does not meet the preset requirements, the electric propeller or electric spiral blade set in the pouring duct is controlled to rotate.

7. The ultra-deep concrete pouring method according to claim 6, wherein detecting the current segregation rate of the concrete poured through the pouring pipe includes: The downward speed of the isolation ball is detected by at least two ball position sensors installed inside the pouring pipe, and the downward speed of the isolation ball is used as the falling speed of the concrete. The controller obtains the current segregation rate of the concrete based on the pre-set mapping relationship between the concrete segregation rate and the concrete falling speed.

8. The ultra-deep concrete pouring method according to claim 7, wherein if the detected current segregation rate of the concrete does not meet the preset requirements, controlling the rotation of the electric propeller or electric spiral blade installed in the pouring duct includes: The detected current segregation rate of concrete is compared with the preset segregation rate of concrete; If the comparison shows that the current segregation rate of the concrete does not meet the preset segregation rate requirement, then control the rotation of the electric propeller or electric spiral blade installed in the pouring duct.

9. The ultra-deep concrete pouring method according to claim 8, if the comparison shows that the current segregation rate of the concrete does not meet the preset segregation rate requirement, then controlling the rotation of the electric propeller or electric spiral blade installed in the pouring guide includes: If the comparison shows that the current segregation rate of the concrete does not meet the preset segregation rate requirement, determine the difference between the current segregation rate of the concrete and the preset segregation rate of the concrete. The controller obtains the speed of the electric propeller or electric propeller blade corresponding to the current segregation rate difference based on the pre-set mapping relationship between the segregation rate difference and the speed of the electric propeller or electric propeller blade. The controller controls the rotational speed of the electric propeller or electric rotor blades, causing them to rotate at the obtained speed to mix the concrete.

10. An ultra-deep concrete pouring apparatus for the method of any one of claims 1-9, comprising: A pouring pipe for mixing concrete, which is lowered into the formed ultra-deep slot. Isolation balls are used to be placed inside pouring pipes that can mix concrete; In this process, concrete is poured into the pouring pipe into which the isolation ball is placed, so that the concrete is stirred in the pouring pipe and slowed down as it falls to the bottom of the slot with the isolation ball until it is poured into the slot to form a wall. The ultra-deep slot refers to a slot with a depth greater than 150 meters.

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