Construction method and system for fine pumping of 200-meter-level cable bent tower high pier concrete

Abstract

The embodiment of the invention provides a fine pumping construction method and system for 200-meter-level cable bent tower high pier concrete. The method is applied to the technical field of building construction and comprises the steps that fine aggregate screening is conducted on machine-made sand through a six-stage screening method, excessive coarse particles are screened out, and optimized fine aggregate is obtained; preparing different grades of gel materials based on the fine aggregate, and carrying out one-time pumping and pouring treatment on concrete by adopting the different grades of gel materials; and collecting concrete state data in the pumping process, and performing real-time dynamic regulation and control on the pumping process based on the data to form a concrete structure. In this way, by means of fine aggregate grading optimization and an intelligent dynamic regulation and control system, concrete keeps uniform fluidity under the ultrahigh lift, and pressure fluctuation of a pump pipe is greatly stabilized; and stable conveying of zero-blockage pipes in the whole process is achieved, and continuous construction is guaranteed.

Description

Technical Field

[0001] The present disclosure relates to the technical field of building construction, and in particular to a method and system for fine-tuning concrete pumping construction of a 200-meter-class cable tower high pier. Background Art

[0002] By the end of 2022, my country had built more than 1.03 million bridges, including 8,816 super-large bridges. Among these 8,816 super-large bridges, many are high-pier and high-cable tower bridges.

[0003] The single-use pumping of concrete for high piers and cable towers is a common challenge and pain point in the bridge construction industry. Traditionally, the water-cement ratio adjusted during construction often exceeds the designed water-cement ratio, resulting in poor concrete appearance quality, 28-day compressive strength that falls short of design requirements, and other indicators that fail to meet regulatory requirements. Increasing the construction mix ratio increases cement usage, leading to high heat of hydration and elevated chloride and alkali contents, which can cause various cracks during the concrete setting process. Poor quality and gradation of fine and coarse aggregates lead to poor concrete workability, which can easily cause concrete pipe blockage, delays, and poor appearance quality during construction.

[0004] Therefore, it is currently urgent to provide a technical solution that can effectively improve the construction quality of cable tower concrete. Summary of the Invention

[0005] The present invention provides a method and system for fine-grained concrete pumping construction of 200-meter-class cable tower high piers. By optimizing fine aggregate grading and adopting an intelligent dynamic control system, the method solves the technical problems of poor concrete quality and easy pipe blockage and construction delay in the prior art.

[0006] According to a first aspect of the present disclosure, a method for fine-tuning concrete pumping construction for a 200-meter-class cable tower pier is provided, comprising the following steps:

[0007] A six-stage screening method is used to screen the manufactured sand into fine materials, removing excess coarse particles to obtain optimized fine aggregate;

[0008] Based on the fine aggregate, different gradations of gel materials are equipped, and the concrete is pumped and poured once using different gradations of gel materials;

[0009] The concrete status data during the pumping process is collected, and the pumping process is dynamically regulated in real time based on the data to form a concrete structure.

[0010] According to the above aspects and any possible implementation, a further implementation is provided, wherein the process of using a six-stage screening method to screen the machine-made sand for fine material, screening out excessive coarse particles, and obtaining optimized fine aggregate is as follows:

[0011] New screening holes are inserted into the standard sieve to construct a six-stage screening system, through which the machine-made sand is screened separately for fine material screening;

[0012] A Gaussian distribution model was constructed to control the passing rate of each particle size in the six-stage screening system to obtain fine aggregate with uniform coarseness and fineness;

[0013] A fineness modulus verification model is constructed, and the fineness modulus value of fine aggregate is calculated by calculating the sieve retention rate of each particle size sieve hole. When the control value is reached, the optimized fine aggregate is obtained.

[0014] According to the above aspects and any possible implementation, an implementation is further provided, wherein the Gaussian distribution model is specifically:

[0015]

[0016] Among them, P x is the passing rate of sieve hole x, a is the peak parameter, b is the distribution coefficient, c is the main controlling particle size, and d is the base passing rate.

[0017] According to the above aspects and any possible implementation, a further implementation is provided, wherein the process of forming the initial high pier by using gel materials of different gradations prepared based on fine aggregate and performing a one-time pumping and pouring process of concrete using the gel materials of different gradations is as follows:

[0018] Set three height sections, design corresponding feeding sequences and gel material ratios for different height sections, and perform functional regulation on the gel material;

[0019] Design the critical point transition zone range for adjacent height segments and configure the mixed material ratio corresponding to the critical point transition zone;

[0020] Feed materials at different height sections separately, and monitor the moisture content of the gel material in real time using a microwave moisture meter to ensure a constant water-gel ratio.

[0021] According to the above aspects and any possible implementation, a further implementation is provided, wherein the three-level height segment is set, and corresponding feeding sequences and gel material ratios are designed for different height segments as follows:

[0022] 0-100 meters is set as the basic section, and the set feeding sequence and gel material ratio are: coarse aggregate 957kg / m 3 , fine aggregate 848kg / m 3 , cement 385kg / m 3 、Fly ash 96kg / m 3 、Water 154kg / m 3 , water reducing agent 4.33kg / m 3 ;

[0023] 101-203 meters is set as the middle and high section, and the set feeding sequence and gel material ratio are: coarse aggregate 980kg / m 3 , fine aggregate 835kg / m 3 , slag powder 96kg / m 3 , cement 289kg / m 3 、Fly ash 96kg / m 3 、Water 154kg / m 3 , water reducing agent 5.29kg / m 3 ;

[0024] 204-248 meters is set as the super-high section, and the set feeding sequence and gel material ratio are: coarse aggregate 980kg / m 3 , fine aggregate 835kg / m 3 , silica fume 19kg / m 3 、Nano slurry 5kg / m 3 , cement 366kg / m 3 、Fly ash 96kg / m 3 , water 154kg / m 3 , water reducing agent 5.29kg / m 3 .

[0025] According to the above aspects and any possible implementation, a further implementation is provided, wherein the process of functionalizing and regulating the gel material is:

[0026] Obtaining the particle size parameters of coarse and fine particles in the gel material, constructing a particle size matching formula, calculating the pore diameter of the cement matrix, and configuring the slag powder with a suitable particle size based on the diameter;

[0027] The nano-paste strength formula is constructed based on the density and specific surface area of the nano-paste material, and the volume dosage of the nano-paste material is calculated based on the set strength improvement value;

[0028] The hydration heat peaks and reaction rate constants of cement and slag powder were calculated respectively, and the heat release rate equation was constructed to control the heat release during the grouting process.

[0029] According to the above aspects and any possible implementation, a further implementation is provided, wherein the concrete state data during the pumping process is collected, and the pumping process is dynamically regulated in real time based on the data to form a concrete structure.

[0030] During the pumping process, a microwave moisture meter is installed every 50m along the pump pipe to detect the moisture content of the concrete, and concrete slump compensation is performed based on the moisture content;

[0031] A pulse generator is installed at the pump cylinder outlet to generate periodic pressure waves, and pipe blockage warning and cleaning are performed based on the pressure waves.

[0032] In accordance with the above aspects and any possible implementation, a further implementation is provided, wherein a pulse generator is installed at the pump cylinder outlet to generate periodic pressure waves, and the process of performing pipe blockage warning and cleaning based on the pressure waves is as follows:

[0033] A pulse generator is installed at the pump cylinder outlet to generate periodic pressure waves. The pulse frequency is calculated based on the concrete flow rate and the pump pipe length, and the instantaneous pulse pressure is obtained by solving the pulse frequency.

[0034] Collect the instantaneous pulse pressure changes in different time periods, and establish the pump nozzle pressure change judgment formula based on the sampling time interval and the pump tube section length;

[0035] A critical value of the pressure change is set based on the formula, and a backwash mechanism is automatically triggered based on the critical value to clean the concrete flocculation structure.

[0036] According to a second aspect of the present disclosure, a 200-meter-class cable tower high pier concrete fine pumping construction system is provided, comprising: a fine aggregate screening module, a concrete pumping and pouring module, and a pumping control module;

[0037] The fine aggregate screening module is used to screen the machine-made sand into fine aggregate using a six-stage screening method, thereby screening out excessive coarse particles and obtaining optimized fine aggregate.

[0038] The concrete pumping and pouring module is used to prepare gel materials of different gradations based on fine aggregate, and use the gel materials of different gradations to perform a one-time concrete pumping and pouring process;

[0039] The pumping control module is used to collect concrete status data during the pumping process, and to perform real-time dynamic control on the pumping process based on the data to form a concrete structure.

[0040] Compared with the prior art, the present invention has the following technical effects:

[0041] (1) The present invention adopts a segmented functionalized cementitious material system (slag powder fills micropores, nanomaterials reinforce the interface) to ensure that concrete meets strength and durability requirements at different height sections. After the ultra-high section is mixed with silica fume and fiber, the crack resistance is significantly improved, and the surface is dense and defect-free, effectively solving the strength attenuation and appearance defects of traditional processes.

[0042] (2) The present invention uses an intelligent pumping system with real-time slump compensation and pulse stabilization technology to reduce manual intervention and vibration time, significantly shortening the single-segment casting cycle. Industrial waste (fly ash, slag powder) is used in large quantities to replace cement in the mix ratio, thereby reducing material costs and reducing the investment in temperature control measures caused by hydration heat.

[0043] (3) The present invention completely solves the problem of segregation and pipe blockage in high pier pumping through fine aggregate grading optimization and intelligent dynamic control system. Concrete maintains uniform fluidity under ultra-high head, and pump pipe pressure fluctuations are greatly smoothed, achieving stable transportation with zero pipe blockage throughout the entire process and ensuring continuous construction.

[0044] It should be understood that the contents described in the Summary of the Invention section are not intended to limit the key or important features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. The accompanying drawings are provided for a better understanding of the present disclosure and do not constitute a limitation of the present disclosure. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, among which:

[0046] Figure 1 A schematic diagram of a process for refined concrete pumping construction of a 200-meter-class cable tower high pier according to an embodiment of the present disclosure is shown;

[0047] Figure 2 A structural schematic diagram of a 200-meter-class cable tower high pier concrete refinement pumping construction system according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0048] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present disclosure.

[0049] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0050] Reference Figure 1 As shown, this embodiment provides a method for fine pumping construction of concrete for a 200-meter-class cable tower pier, comprising the following steps:

[0051] S101. Use a six-stage screening method to screen the machine-made sand into fine particles, remove excess coarse particles, and obtain optimized fine aggregate.

[0052] Since traditional machine-made sand has a gradation gap of 4.75mm-2.36mm, resulting in excessive coarse particles, which in turn causes pumping segregation and pipe blockage. Therefore, in order to solve the problem of segregation and pipe blockage caused by the gradation gap of traditional machine-made sand, this embodiment transforms the traditional screening system by inserting 3.5mm sieve holes and adding 0.6mm sieve holes in the standard sieve to obtain a six-stage screening system, whose screening sequence logic is: 4.75mm→3.5mm→2.36mm→1.18mm→0.6mm→0.075mm.

[0053] Subsequently, the coarse aggregates are sieved separately, and the coarse particles therein are screened step by step to obtain fine aggregates.

[0054] At the same time, this embodiment uses a Gaussian distribution model to accurately control the pass rate of each particle size, thereby ensuring that particles around 2.36 mm account for the largest proportion (75-80%), thereby eliminating the grading "hump".

[0055] The Gaussian distribution model constructed in this embodiment is:

[0056]

[0057] Among them, P x is the passing rate of sieve hole x, a is the peak parameter, b is the distribution coefficient, c is the main controlling particle size, and d is the base passing rate.

[0058] This embodiment also constructs a fineness modulus verification model. By continuously optimizing the sieve hole retention rate, the control value of fineness in this embodiment (set as FM=2.55±0.05 in this embodiment) is achieved, and the fine aggregate collection is completed. The fineness modulus verification model is:

[0059]

[0060] Among them, FM is the fineness modulus value, x is the sieve aperture i The screening rate, ω i is the sieve weight coefficient.

[0061] S102. Gel materials of different gradations are prepared based on fine aggregate, and the gel materials of different gradations are used to perform a one-time pumping and pouring process of concrete.

[0062] In this embodiment, for a 200m-level tower pier, three height intervals are constructed and three different proportions are simultaneously implemented, specifically:

[0063] 0-100m (foundation section): coarse aggregate 957kg / m3 , fine aggregate 848kg / m 3 , cement 385kg / m 3 、Fly ash 96kg / m 3 , water 154kg / m 3 , water reducing agent 4.33kg / m 3 High cement content ensures early strength and the use of fly ash improves workability.

[0064] 101-203m (middle and high section): coarse aggregate 980kg / m 3 , fine aggregate 835kg / m 3 , slag powder 96kg / m 3 , cement 289kg / m 3 、Fly ash 96kg / m 3 , water 154kg / m 3 , water reducing agent 5.29kg / m 3 By replacing 30% of cement with slag powder, the micropore filling effect of slag powder can reduce pumping resistance by 12% and reduce hydration heat.

[0065] 204-248m (super high section): coarse aggregate 980kg / m 3 , fine aggregate 835kg / m 3 , silica fume 19kg / m 3 、Nano slurry 5kg / m 3 , cement 366kg / m 3 、Fly ash 96kg / m 3 , water 154kg / m 3 , water reducing agent 5.29kg / m 3 By adding silica fume and nano-CaCO3, nanoparticles fill the gaps in cement and improve the interfacial adhesion, thereby compensating for the strength loss.

[0066] In this embodiment, since the gel material uses slag powder, the micropore filling effect can be used to reduce pumping resistance. Therefore, the particle size matching of the slag powder micropore filling effect is specifically as follows:

[0067] D pore =0.5×(D max -D min ) (3)

[0068] Among them, D pore is the pore diameter of cement matrix, D max is the maximum particle size of coarse particles, D min The minimum particle size of fine particles.

[0069] Subsequently, in this embodiment, nano calcium carbonate is used to effectively fill the gaps between cements, thereby improving the bonding strength of the interface and compensating for the strength loss. The specific strength is:

[0070]

[0071] Where Δf c is the strength improvement value, k n is the enhancement coefficient, ρ n is the density of nanomaterials, SSA n is the specific surface area, V n The strength improvement value in this embodiment is set to 12 MPa.

[0072] At the same time, this embodiment constructs a heat release rate equation to control the hydration thermodynamics of slag powder and cement, specifically:

[0073]

[0074] Where Q is the cumulative hydration heat, m i is the mass of cementitious material, q i is the peak hydration heat (375KJ for cement and 220KJ / kg for slag powder), k i is the reaction rate constant (cement 0.25h -1 , slag powder 0.18h -1 ), t is the hydration time.

[0075] This embodiment also has critical point transition zones designed at different heights. The specific transition zone ranges are: 98-102m (100m critical point) and 201-205m (203m critical point). Different material ratios are used in the transition zones, specifically:

[0076]

[0077] Among them, m 新 is the material consumption in the transition zone, m 原 is the material consumption of the original height section, m 目 is the material consumption of the target height segment, h is the current pouring height, h c It is the critical height (100m, 203m).

[0078] Finally, in the actual pouring process, the segmented feeding method is adopted, and the specific feeding method is as follows:

[0079] 0-100m: coarse aggregate → fine aggregate → cement + fly ash → water + water reducing agent, pouring time is 120s;

[0080] 101-203m: coarse aggregate → fine aggregate → slag powder → cement + fly ash → water + water reducer, pouring time is 150s;

[0081] 204-248m: coarse aggregate → fine aggregate → silica fume + nano slurry → cement + fly ash → water + water reducer, pouring time is 180s.

[0082] During the pouring process, the moisture content of the gel material is monitored in real time using a microwave moisture meter, and the water consumption is corrected in real time to ensure that the water-to-binder ratio of the gel material is uniform and constant. Specifically:

[0083] W adj =W0+k w ·(ρ 实测 -ρ 目标 ) (7)

[0084] Among them, W adj is the adjusted water consumption, W0 is the theoretical water consumption (base value 154kg / m 3 ), k w is the water consumption correction coefficient, which is 2.5, ρ 实测 is the measured density of concrete, ρ 目标 is the target density of concrete.

[0085] S103: Collecting concrete status data during the pumping process, and dynamically regulating the pumping process in real time based on the data to form a concrete structure.

[0086] In this embodiment, intelligent dynamic pumping control is performed during the pumping process to ensure the entire process of concrete pumping.

[0087] This embodiment achieves real-time slump compensation by detecting the slump. Specifically, this embodiment installs a microwave moisture content instrument every 50 m along the pump pipe to monitor the concrete state, calculates the concrete slump based on the moisture content, and achieves moisture content-slump conversion, specifically:

[0088] SL=k m ·(w-w0)+SL0 (8)

[0089] Where SL is the current slump, k m is the calibration coefficient, w is the measured moisture content, w0 is the reference moisture content, and SL0 is the reference slump.

[0090] The concrete loss prediction model is then calculated as follows:

[0091] SL h =SL0-αh 0.7 -βt h 0.5 (9)

[0092] Among them, SLh is the slump at height h, α is the height attenuation coefficient, h is the current pumping height, β is the time attenuation coefficient, t h is the age of concrete.

[0093] This embodiment uses a dual variable control method of height and time. When SL h When the slump is less than 200mm, plasticizer will be automatically injected to ensure that the slump is within a reasonable range.

[0094] At the same time, this embodiment generates periodic pressure waves by adding a pulse generator at the pump cylinder outlet to perform hydraulic pulse flow stabilization. The generated pulse frequency is specifically:

[0095]

[0096] Among them, f is the pulse frequency, v is the concrete flow rate, L is the length of a single section of pipe, and N is the number of pump cylinders.

[0097] The resulting pulse pressure waveform is:

[0098] P pulse =0.3P0·sin(2πft)+P base (11)

[0099] Among them, P pulse is the instantaneous pulse pressure, P0 is the current steady-state pump pressure, P base is the basic pump pressure, and t is the time.

[0100] Since flocculation may occur during the concrete pouring process, which may easily lead to pipe blockage, this embodiment constructs a pressure mutation judgment formula to determine whether pipe blockage occurs, specifically:

[0101]

[0102] Among them, ΔP is the pressure change, Δt is the sampling time interval, and ΔL is the length of the pipe section.

[0103] Pulse waves are used to break up the concrete flocculation structure, thereby reducing the concrete viscosity and preventing pipe blockage.

[0104] This embodiment has extraordinary guiding and reference significance for the pouring of high pier concrete in mountainous areas, has great value for promotion and application, and can obtain very good economic and social benefits, specifically as follows: 1. In terms of safety, the concrete workability is better during the high pier pumping process, and it is not easy to block the pipe, which reduces the safety risks of pipe bursting and high-altitude manual pipe removal during the pouring process; 2. In terms of quality, a 3.5mm sieve is added to the standard sieve hole, the quality of the sand product is stable, the working performance of the high pier pumped concrete is improved, the strength and appearance quality control of the concrete are ensured, the use of silica powder is increased, the compressive strength of the concrete is improved, the segregation of the concrete is prevented, the durability of the concrete is enhanced, the appearance quality defects of the concrete are prevented, the hydration heat reaction is reduced, the internal stress of the solidified material is eliminated, cracking is prevented, and quality problems are eliminated. ; 3. In terms of progress, there will be no pipe blockage during the pumping process, and each section will be constructed normally during the construction process, which will reduce the time for manual compaction, effectively reduce working hours and efficiency, save concrete pouring construction time and labor, and promote the overall construction schedule; 4. In terms of cost, on the one hand, fly ash and slag powder are used instead of cement according to the performance of on-site construction, which reduces the amount of cement used, effectively controls the hydration heat reaction caused by excessive concrete use, prevents the cracking of concrete hydration heat, and adds silica powder to improve the adhesion and strength index of concrete materials, thereby improving the durability of concrete. On the other hand, improving the pumpability of concrete effectively ensures the pumpability of high pier operations, effectively reduces labor input during the pouring process, saves pouring construction time, and improves working hours and efficiency.

[0105] This embodiment achieves the goals of improving concrete workability, preventing pipe blockage during pouring, ensuring strength meets design requirements, and reducing concrete pouring time. It effectively addresses the existing issues of concrete workability and performance matching during pumping, as well as the difficulties of pouring due to conventional pipe blockage and the difficulty in controlling concrete cracks and quality. This reduces the risks of working at height and ensures worker safety.

[0106] like Figure 2 As shown, this embodiment also provides a 200-meter-class cable tower high pier concrete fine pumping construction system, including: a fine aggregate screening module 1, a concrete pumping and pouring module 2, and a pumping control module 3;

[0107] The fine aggregate screening module 1 is used to screen the manufactured sand into fine aggregate using a six-stage screening method, screening out excess coarse particles to obtain optimized fine aggregate;

[0108] The concrete pumping and pouring module 2 is used to prepare gel materials of different gradations based on fine aggregate, and use the gel materials of different gradations to perform a one-time concrete pumping and pouring process;

[0109] The pumping control module 3 is used to collect concrete status data during the pumping process, and to perform real-time dynamic control on the pumping process based on the data to form a concrete structure.

[0110] It should be noted that for the aforementioned method embodiments, for simplicity of description, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present disclosure is not limited by the order of the actions described, because according to the present disclosure, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required by the present disclosure.

[0111] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in this disclosure can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved. This is not limited herein.

[0112] The above specific embodiments do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure shall be included within the scope of protection of this disclosure.

Claims

1. A 200-meter-class cable tower high pier concrete refined pumping construction method, characterized in that: The following steps are involved: A six-stage screening method is used to screen the manufactured sand into fine materials, removing excess coarse particles to obtain optimized fine aggregate; Based on the fine aggregate, different gradations of gel materials are equipped, and the concrete is pumped and poured once using different gradations of gel materials; The concrete status data during the pumping process is collected, and the pumping process is dynamically regulated in real time based on the data to form a concrete structure.

2. The 200-meter-class cable tower high pier concrete refined pumping construction method according to claim 1 is characterized in that: The process of using the six-stage screening method to screen the machine-made sand into fine materials, screening out excessive coarse particles, and obtaining optimized fine aggregate is as follows: New screening holes are inserted into the standard sieve to construct a six-stage screening system, through which the machine-made sand is screened separately for fine material screening; A Gaussian distribution model was constructed to control the passing rate of each particle size in the six-stage screening system to obtain fine aggregate with uniform coarseness and fineness; A fineness modulus verification model is constructed, and the fineness modulus value of fine aggregate is calculated by calculating the sieve retention rate of each particle size sieve hole. When the control value is reached, the optimized fine aggregate is obtained.

3. The 200-meter-class cable tower high pier concrete refined pumping construction method according to claim 2 is characterized in that: The Gaussian distribution model is specifically: Among them, P x is the passing rate of sieve hole x, a is the peak parameter, b is the distribution coefficient, c is the main controlling particle size, and d is the base passing rate.

4. The 200-meter-class cable tower high pier concrete refined pumping construction method according to claim 1 is characterized in that: The process of preparing gel materials of different gradations based on fine aggregate and using the gel materials of different gradations to perform a one-time pumping and pouring process of concrete to form the initial high pier is as follows: Set three height sections, design corresponding feeding sequences and gel material ratios for different height sections, and perform functional regulation on the gel material; Design the critical point transition zone range for adjacent height segments and configure the mixed material ratio corresponding to the critical point transition zone; Feed materials at different height sections separately, and monitor the moisture content of the gel material in real time using a microwave moisture meter to ensure a constant water-gel ratio.

5. The 200-meter-class cable tower high pier concrete refined pumping construction method according to claim 4 is characterized in that: The three-level height segment is set, and the corresponding feeding sequence and gel material ratio are designed for different height segments as follows: 0-100 meters is set as the basic section, and the set feeding sequence and gel material ratio are: coarse aggregate 957kg / m 3 , fine aggregate 848kg / m 3 , cement 385kg / m 3 、Fly ash 96kg / m 3 , water 154kg / m 3 , water reducing agent 4.33kg / m 3 ; 101-203 meters is set as the middle and high section, and the set feeding sequence and gel material ratio are: coarse aggregate 980kg / m 3 , fine aggregate 835kg / m 3 , slag powder 96kg / m 3 , cement 289kg / m 3 、Fly ash 96kg / m 3 、Water 154kg / m 3 , water reducing agent 5.29kg / m 3 ; 204-248 meters is set as the super-high section, and the set feeding sequence and gel material ratio are: coarse aggregate 980kg / m 3 , fine aggregate 835kg / m 3 , silica fume 19kg / m 3 、Nano slurry 5kg / m 3 , cement 366kg / m 3 、Fly ash 96kg / m 3 、Water 154kg / m 3 , water reducing agent 5.29kg / m 3 .

6. The 200-meter-class cable tower high pier concrete refined pumping construction method according to claim 5 is characterized in that: The process of functionalizing and regulating the gel material is as follows: Obtaining the particle size parameters of coarse and fine particles in the gel material, constructing a particle size matching formula, calculating the pore diameter of the cement matrix, and configuring the slag powder with a suitable particle size based on the diameter; The nano-paste strength formula is constructed based on the density and specific surface area of the nano-paste material, and the volumetric dosage of the nano-paste material is calculated based on the set strength improvement value; The hydration heat peaks and reaction rate constants of cement and slag powder were calculated respectively, and the heat release rate equation was constructed to control the heat release during the grouting process.

7. The 200-meter-class cable tower high pier concrete refined pumping construction method according to claim 1 is characterized in that: The process of collecting concrete status data during the pumping process and dynamically regulating the pumping process in real time based on the data to form a concrete structure is as follows: During the pumping process, a microwave moisture meter is installed every 50m along the pump pipe to detect the moisture content of the concrete, and concrete slump compensation is performed based on the moisture content; A pulse generator is installed at the pump cylinder outlet to generate periodic pressure waves, and pipe blockage warning and cleaning are performed based on the pressure waves.

8. The 200-meter-class cable tower high pier concrete refined pumping construction method according to claim 7 is characterized in that: The process of installing a pulse generator at the pump cylinder outlet to generate periodic pressure waves and performing pipe blockage warning and cleaning based on the pressure waves is as follows: A pulse generator is installed at the pump cylinder outlet to generate periodic pressure waves. The pulse frequency is calculated based on the concrete flow rate and the pump pipe length, and the instantaneous pulse pressure is obtained by solving the pulse frequency. Collect the instantaneous pulse pressure changes in different time periods, and establish the pump nozzle pressure change judgment formula based on the sampling time interval and the pump tube section length; A critical value of the pressure change is set based on the formula, and a backwash mechanism is automatically triggered based on the critical value to clean the concrete flocculation structure.

9. A 200-meter-class cable tower high pier concrete fine pumping construction system, used to implement the 200-meter-class cable tower high pier concrete fine pumping construction method according to any one of claims 1 to 8, characterized in that: include: Fine aggregate screening module (1), concrete pumping and pouring module (2), pumping control module (3); The fine aggregate screening module (1) is used to screen the manufactured sand into fine aggregate using a six-stage screening method, thereby screening out excessive coarse particles and obtaining optimized fine aggregate; The concrete pumping and pouring module (2) is used to prepare gel materials of different gradations based on fine aggregate, and to perform a one-time concrete pumping and pouring process using the gel materials of different gradations; The pumping control module (3) is used to collect concrete status data during the pumping process, and to perform real-time dynamic control on the pumping process based on the data to form a concrete structure.

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