Intelligent slurry treatment system for pebble stratum cast-in-situ bored pile construction

Abstract

The invention belongs to the technical field of cast-in-situ bored pile construction slurry treatment, and relates to an intelligent treatment system for pebble stratum cast-in-situ bored pile construction slurry. According to the method, the target slurry states in different treatment stages are reflected on the basis of analysis of the treatment evaluation indexes of the target slurry in all the treatment stages, existing slurry problems can be solved in a targeted mode, it is ensured that the target slurry maintains good performance, the overall construction efficiency is improved, and by determining the performance correction requirement orientation of the target slurry after treatment, the overall construction efficiency is improved. It is guaranteed that the key performance of the target slurry always meets the construction requirement, it is guaranteed that the hole wall of the cast-in-situ bored pile is stable, accidents such as hole collapse and hole shrinkage of the hole wall of the cast-in-situ bored pile are avoided, the slurry treatment effect evaluation coefficient is analyzed, the slurry treatment change trend of equipment in the historical slurry circulation process of the target slurry is known, and the target slurry treatment effect evaluation coefficient is obtained. The method is beneficial for analyzing the processing stage which may have problems, and pointedly checking equipment faults or optimizing the operation process.

Description

Technical Field

[0001] The invention belongs to the technical field of bored cast-in-place pile construction mud treatment, and relates to an intelligent mud treatment system for bored cast-in-place pile construction in pebble strata. Background Art

[0002] The pebble stratum has a complex structure, containing pebbles of different sizes and shapes. A large amount of solid debris will be generated during the drilling process. After being mixed into the mud, it will quickly change the performance parameters of the mud, such as particle composition, viscosity, and specific gravity. Traditional mud treatment methods are difficult to efficiently cope with such complex and changeable working conditions, which can easily lead to mud performance out of control, affecting the construction progress and pile hole quality. Therefore, the intelligent mud treatment system for pebble stratum bored pile construction has very important significance and role.

[0003] In the prior art, there are also some related solutions involving bored pile construction mud, for example, a method for rapid processing of bored pile mud with Chinese patent publication number CN116122285A, which includes: first, adding chemical flocculants to the bored mud according to the ratio, stirring the reaction and letting it settle to achieve rapid separation of water and mud sediment in the mud; then, taking the bored mud sediment and adding quicklime in a mass ratio to achieve rapid drying of the mud sediment and prepare high-content lime stabilized soil; secondly, according to the ratio, the high-content lime stabilized soil and clay are evenly mixed to prepare a general-content lime stabilized soil; finally, according to the construction rolling technology of lime stabilized soil, the general-content lime stabilized soil is used as a road subgrade filling material. This solution can quickly process the waste mud generated during the construction of bored piles, prepare lime stabilized soil for road subgrade filling materials in road construction, and achieve rapid processing and reuse of bored pile mud.

[0004] The Chinese patent publication number CN113914307A discloses a method for reverse circulation construction of bored piles with synchronous sand separation, which includes a drilling rig, casing, mud box, mud pump, screen filter, vibrating screen, mud tray and cyclone desander to realize reverse circulation hole cleaning of bored piles, and then the drilling rig, casing, mud box, mud pump, screen filter, vibrating screen, mud tray and cyclone desander are connected to each other with pipes and valves according to the reverse circulation hole cleaning process of bored piles. In addition to using screen and vibrating screen to filter sand and gravel in mud, the reverse circulation hole cleaning system of the bored piles of the present invention also uses cyclone desander to process fine sand in mud, so that the fine sand in mud can be effectively recycled, thereby generating certain economic value.

[0005] Although the above schemes have proposed some solutions for bored cast-in-place pile construction mud, they still have certain limitations: (1) Some existing technologies mainly use treatment methods to quickly treat the waste mud generated during the bored cast-in-place pile construction process, prepare lime-stabilized soil for roadbed filling materials in road construction, and realize the rapid treatment and reuse of bored cast-in-place pile mud. However, they lack the detection and analysis of the mud recycled during the bored cast-in-place pile construction process, and thus cannot specifically treat the mud recycled during the bored cast-in-place pile construction process.

[0006] (2) Some existing technologies process the mud recycled during the construction of bored piles through a reverse circulation hole cleaning system, and utilize the waste products obtained from the treatment. However, they ignore the evaluation of the effects of each treatment stage of the mud recycled during the construction of bored piles, which is not conducive to accurate parameter analysis and corresponding correction, and cannot solve the existing problems of the mud in a targeted manner, and thus cannot ensure that the mud always maintains good performance.

[0007] (3) The existing technology neglects to detect and analyze the performance of the mud recycled during the bored pile construction process, and thus cannot ensure that the key properties of the mud, such as viscosity, specific gravity, pH value, sand content, and water loss, always meet the construction requirements. In addition, the existing technology also lacks the analysis of the changing trends of the equipment treating the mud during the historical mud circulation process, which is not conducive to timely understanding the treatment stage of the mud that may have problems during the mud circulation process, and cannot specifically troubleshoot equipment failures or optimize operating procedures. Summary of the invention

[0008] In view of this, in order to solve the problems raised in the above background technology, an intelligent mud processing system for bored pile construction in pebble strata is proposed.

[0009] The purpose of the present invention can be achieved through the following technical solutions: The present invention provides an intelligent mud processing system for bored pile construction in pebble formations, including: a reverse circulation processing demand analysis module, a primary screening processing demand analysis module, a secondary screening processing demand analysis module, a deep processing demand analysis module, a performance correction demand analysis module, a mud treatment effect evaluation module and a database.

[0010] The reverse circulation treatment demand analysis module is used to record the mud used in the construction of bored piles in the target pebble formation as the target mud, obtain the mud flow rate and mud flow rate stability of the target mud during the reverse circulation process, and analyze the reverse circulation evaluation index of the target mud based on this to determine the reverse circulation treatment demand of the target mud.

[0011] The primary screening processing demand analysis module is used to obtain the mud residual particle size distribution diagram and gas content of the target mud during the primary screening process, analyze the primary screening evaluation index of the target mud and determine the primary screening processing demand.

[0012] The secondary screening processing demand analysis module is used to analyze the target mud residual particle size distribution diagram, sand content and purity obtained during the secondary screening process to obtain the secondary screening evaluation index of the target mud and determine the secondary screening processing demand of the target mud.

[0013] The deep processing requirement analysis module is used to analyze the transmittance and particle concentration of the supernatant of the target mud obtained during the deep processing process, obtain the deep processing evaluation index of the target mud, and judge the deep processing requirement of the target mud.

[0014] The performance correction requirement analysis module is used to obtain the performance information parameters of the target mud after being processed, determine the performance correction requirement direction of the target mud after being processed, and perform performance correction on the target mud accordingly.

[0015] The mud treatment effect evaluation module is used to obtain the reverse circulation evaluation index, primary screening evaluation index, secondary screening evaluation index and deep treatment evaluation index of each historical mud cycle, analyze the mud treatment effect evaluation coefficient, and feed it back.

[0016] The database is used to store the standard density value, standard viscosity, standard sand content, standard pH value, standard specific gravity and standard water loss of the target mud during initial preparation, and to store the reverse circulation evaluation index, primary screening evaluation index, secondary screening evaluation index and deep processing evaluation index of each historical mud cycle.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention helps to reflect the target mud status at different processing stages by analyzing the reverse circulation evaluation index, primary screening evaluation index, secondary screening evaluation index and deep processing evaluation index of the target mud, facilitates accurate parameter analysis and corresponding correction, and solves the existing problems of the mud in a targeted manner, thereby ensuring that the target mud maintains good performance, avoiding frequent cleaning of blocked pipes and equipment, maintaining smooth flow of mud, ensuring seamless connection of construction links such as drilling and slag removal, and improving overall construction efficiency.

[0018] 2. The present invention determines the performance correction requirements of the target mud after treatment by analyzing the performance evaluation of the target mud after treatment, which helps to ensure that the key properties of the target mud, such as viscosity, specific gravity, pH value, sand content, water loss, etc., always meet the construction requirements, ensure the stability of the bored pile hole wall, and avoid the occurrence of accidents such as hole collapse and diameter shrinkage of the bored pile hole wall.

[0019] 3. The present invention analyzes the mud treatment effect evaluation coefficient based on the reverse circulation evaluation index, primary screening evaluation index, secondary screening evaluation index and deep processing evaluation index of each historical mud cycle, which helps to understand the changing trend of the equipment treating the target mud in the historical mud circulation process, thereby facilitating timely understanding of the treatment stage of the target mud in the mud circulation process where problems may exist, and targetedly troubleshooting equipment failures or optimizing operating procedures, which is conducive to quickly resolving potential hidden dangers, avoiding recurrence of problems, and ensuring smooth progress of subsequent construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of system module connection of the present invention.

[0022] Figure 2 It is a flow chart of the implementation of the system module of the present invention.

[0023] Figure 3 A flow chart is obtained for evaluating the performance of the target mud after treatment according to the present invention. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1As shown, the present invention provides an intelligent mud processing system for bored pile construction in pebble formations, and the specific modules are distributed as follows: reverse circulation processing demand analysis module, primary screening processing demand analysis module, secondary screening processing demand analysis module, deep processing demand analysis module, performance correction demand analysis module, mud processing effect evaluation module and database. Among them, the connection mode between the modules is: the reverse circulation processing demand analysis module is connected with the primary screening processing demand analysis module, the primary screening processing demand analysis module is connected with the secondary screening processing demand analysis module, the secondary screening processing demand analysis module is connected with the deep processing demand analysis module, the deep processing demand analysis module is connected with the performance correction demand analysis module, the performance correction demand analysis module is connected with the mud processing effect evaluation module, and the database is respectively connected with the secondary screening processing demand analysis module, the performance correction demand analysis module and the mud processing effect evaluation module.

[0026] The reverse circulation treatment demand analysis module is used to record the mud used in the construction of bored piles in the target pebble formation as the target mud, obtain the mud flow rate and mud flow rate stability of the target mud during the reverse circulation process, and analyze the reverse circulation evaluation index of the target mud based on this to determine the reverse circulation treatment demand of the target mud.

[0027] It needs to be further explained that the system module implementation flow chart is as follows Figure 2 shown.

[0028] It should be further explained that the specific method for obtaining the mud flow rate and mud flow rate stability of the target mud during the reverse circulation process is: directly measuring the mud flow rate of the target mud during the reverse circulation process using the deployed flow rate sensor.

[0029] The mud flow rate of each detection of the target mud in the set time period during the reverse circulation process is obtained, and the standard deviation of the mud flow rate of the target mud in the set time period during the reverse circulation process is further obtained according to the standard deviation calculation formula, and the inverse of the standard deviation of the mud flow rate of the target mud in the set time period during the reverse circulation process is further obtained to obtain the mud flow rate stability of the target mud in the reverse circulation process.

[0030] As a preferred feasibility example, the specific analysis method of the reverse circulation evaluation index of the target mud is: extract the mud flow rate and mud flow rate stability of the target mud in the reverse circulation process, which are recorded as , analyze the reverse circulation evaluation index of the target mud ,in The standard mud flow rate of the target mud in the reverse circulation process is set. It is the allowable difference between the set mud flow rate and the standard mud flow rate.

[0031] In a specific example, the allowable difference between the mud flow rate and the standard mud flow rate is 0.01 liters per second, which means that a deviation of one percent is allowed between the mud flow rate and the standard mud flow rate.

[0032] The reverse circulation evaluation index of the target mud is compared with the preset reverse circulation evaluation index threshold. If the reverse circulation evaluation index of the target mud is greater than or equal to the reverse circulation evaluation index threshold, the reverse circulation treatment demand of the target mud is recorded as a demand that does not require treatment; otherwise, the reverse circulation treatment demand of the target mud is recorded as a demand that requires treatment.

[0033] The primary screening processing demand analysis module is used to obtain the mud residual particle size distribution diagram and gas content of the target mud during the primary screening process, analyze the primary screening evaluation index of the target mud and determine the primary screening processing demand.

[0034] It needs to be further explained that the specific method of obtaining the particle size distribution diagram of the residual particles and the gas content of the target mud in the primary screening process is: using the deployed laser particle size analyzer to detect the target mud after the primary screening process to obtain the particle size distribution diagram of the residual particles of the target mud after the primary screening process, and record it as the particle size distribution diagram of the residual particles of the target mud in the primary screening process.

[0035] Use a sealed sampler to obtain an appropriate amount of sample from the target mud after the primary screening process, and transfer it to a special pressure-resistant measuring container. Use a pressure pump to slowly pressurize the pressure-resistant measuring container to a set pressure value (such as 0.5MPa). After the pressure stabilizes, record the pressure reading at this time, then slowly open the exhaust valve to allow the gas to escape until the pressure in the container no longer changes. Record the final pressure reading P2, and further ratio the difference between P1 and P2 with P1. The obtained ratio is recorded as the gas content of the target mud during the primary screening process.

[0036] As a preferred feasibility example, the specific analysis method of the primary screening evaluation index of the target mud is: extract the particle size distribution diagram of the mud residual particles of the target mud in the primary screening process, obtain the mean value in the particle size distribution diagram of the mud residual particles of the target mud in the primary screening process, and record it as the symbolic particle size of the mud residual particles of the target mud in the primary screening process. .

[0037] Extract the gas content of the target mud during the primary screening process .

[0038] Analyze the primary screening evaluation index of the target mud ,in The reference symbolic particle size of the residual particles in the target mud during the primary screening process is set. It is a minimum value set to prevent the denominator from being zero, and its unit is dimensionless.

[0039] The primary screening treatment requirement of the target mud can be obtained by judging the reverse circulation treatment requirement of the target mud.

[0040] The secondary screening processing demand analysis module is used to analyze the target mud residual particle size distribution diagram, sand content and purity obtained during the secondary screening process to obtain the secondary screening evaluation index of the target mud and determine the secondary screening processing demand of the target mud.

[0041] It needs to be further explained that the specific method for obtaining the particle size distribution diagram of residual particles of the target mud in the secondary screening process, the sand content and the purity is: the particle size distribution diagram of residual particles of the target mud in the secondary screening process can be obtained by the same method as that of obtaining the particle size distribution diagram of residual particles of the target mud in the primary screening process.

[0042] A sample is taken from the target mud after the secondary screening process and recorded as the target mud sampling sample. The sample is placed in a special centrifuge tube. The centrifugal force generated by high-speed rotation causes the sand particles to quickly settle to the bottom of the tube. The total volume and gravel volume of the target mud sampling sample are obtained by reading the corresponding scale on the centrifuge tube. The gravel volume of the target mud sampling sample is divided by its total volume, and the ratio obtained is recorded as the sand content of the target mud in the secondary screening process.

[0043] The density value of the target mud after the secondary screening process is directly measured by a mud density meter, and the density value is compared with the standard density value of the target mud at the time of initial preparation stored in the database. The density value of the target mud is compared with the standard density value of the target mud at the time of initial preparation, and the obtained ratio is recorded as the purity of the target mud in the secondary screening process.

[0044] As a preferred feasibility example, the specific analysis method of the secondary screening evaluation index of the target mud is: extract the particle size distribution diagram of the mud residual particles in the target mud during the secondary screening process, and obtain the symbolic particle size of the mud residual particles in the target mud during the primary screening process in the same way as the acquisition method of the symbolic particle size of the mud residual particles in the target mud during the secondary screening process. .

[0045] The sand content and purity of the target mud in the secondary screening process are recorded as .

[0046] Analyze the secondary screening evaluation index of the target mud ,in They are the reference symbolic particle size and standard sand content of the residual particles of the target mud in the secondary screening process, is the allowable difference between the set sand content and the standard sand content. This is the minimum value set to prevent the denominator from being 0, and its unit is millimeters.

[0047] In a specific example, the allowable difference between the sand content and the standard sand content may be 0.01, which means that a deviation of one percent is allowed between the sand content and the standard sand content.

[0048] The secondary screening treatment requirement of the target mud can be obtained by judging the reverse circulation treatment requirement of the target mud.

[0049] The deep processing requirement analysis module is used to analyze the transmittance and particle concentration of the supernatant of the target mud obtained during the deep processing process, obtain the deep processing evaluation index of the target mud, and judge the deep processing requirement of the target mud.

[0050] It should be further explained that the specific method for obtaining the transmittance and particle concentration of the supernatant of the target mud during the deep treatment process is: using a spectrophotometer to directly detect the supernatant of the target mud after the deep treatment process to obtain the transmittance of the supernatant of the target mud during the deep treatment process.

[0051] The particle counter is used to directly measure the number of particles in the target mud during the deep treatment process, and then the number of particles is compared with the total volume of the target mud during the deep treatment process stored in the database. The obtained ratio is recorded as the particle concentration of the target mud during the deep treatment process.

[0052] As a preferred feasibility example, the specific analysis method of the deep treatment evaluation index of the target mud is: extract the supernatant transmittance and particle concentration of the target mud during the deep treatment process, and record them as , analyze the deep treatment evaluation index of the target mud ,in are the reference supernatant transmittance and reference particle concentration of the target mud during deep treatment, This is the minimum value set to prevent the denominator from being 0, and its unit is per liter.

[0053] The deep treatment requirement of the target mud can be obtained by judging the reverse circulation treatment requirement of the target mud.

[0054] The present invention helps to reflect the state of the target mud at different treatment stages by analyzing the reverse circulation evaluation index, primary screening evaluation index, secondary screening evaluation index and deep processing evaluation index of the target mud, facilitates accurate parameter analysis and corresponding correction, and solves the existing problems of the mud in a targeted manner, thereby ensuring that the target mud maintains good performance, avoiding frequent cleaning of blocked pipes and equipment, maintaining smooth flow of mud, ensuring seamless connection of construction links such as drilling and slag removal, and improving overall construction efficiency.

[0055] The performance correction requirement analysis module is used to obtain the performance information parameters of the target mud after being processed, determine the performance correction requirement direction of the target mud after being processed, and perform performance correction on the target mud accordingly.

[0056] As a preferred feasibility example, the performance information parameters of the target mud after treatment include viscosity, sand content, pH, specific gravity and water loss.

[0057] The performance correction requirements include viscosity correction requirements, sand content correction requirements, pH value correction requirements, specific gravity correction requirements and water loss correction requirements.

[0058] It should be further explained that the specific method for obtaining the viscosity, sand content, pH, specific gravity and water loss of the target mud after treatment is: directly measuring the viscosity, pH and specific gravity of the target mud after treatment using a viscometer, a pH meter and a hydrometer.

[0059] The sand content of the target mud after treatment can be obtained by obtaining the sand content of the target mud in the secondary screening process.

[0060] Place a piece of filter paper on the metal sieve plate of a special water loss meter, fix the filter paper with a metal ring, pour a certain amount (usually 200 ml) of treated mud into the center of the filter paper, install a graduated water loss cylinder, and apply a specified pressure (usually 0.69 MPa) to the water loss cylinder for 30 minutes. During this period, observe the volume of water that seeps from the target mud to the bottom of the filter paper, which is the water loss, and record it as the water loss of the target mud after treatment.

[0061] As a preferred feasibility example, the specific analysis method of the performance evaluation of the target mud after treatment is as follows: extract the viscosity, sand content, pH value, specific gravity and water loss of the target mud after treatment, and subtract them from the standard viscosity, standard sand content, standard pH value, standard specific gravity and standard water loss of the target mud stored in the database at the time of initial preparation, so as to obtain the difference between the viscosity of the target mud after treatment and the standard viscosity, sand content and standard sand content, pH value and standard pH value, specific gravity and standard specific gravity, and water loss and standard water loss, and further compare them with the set allowable differences, respectively. If the difference between the viscosity of the target mud after treatment and the standard viscosity, sand content and standard sand content, pH value and standard pH value, specific gravity and standard specific gravity, and water loss and standard water loss are all less than the allowable differences, the performance evaluation of the target mud after treatment is recorded as qualified; otherwise, the performance evaluation of the target mud after treatment is recorded as unqualified, thereby determining the performance correction demand direction of the target mud after treatment.

[0062] In a specific example, the allowable differences between the viscosity and the standard viscosity, the sand content and the standard sand content, the pH value and the standard pH value, the specific gravity and the standard specific gravity, and the water loss and the standard water loss can all be 0.01, and the units are seconds, percentage, dimensionless, grams per cubic centimeter and milliliters, respectively, which means that a deviation of one percent is allowed between the viscosity and the standard viscosity, the sand content and the standard sand content, the pH value and the standard pH value, the specific gravity and the standard specific gravity, and the water loss and the standard water loss.

[0063] It is necessary to further explain that the performance evaluation flow chart of the target mud after treatment is as follows: Figure 3 shown.

[0064] As a preferred feasibility example, the specific method for determining the performance correction requirement direction of the target mud after treatment is: the difference between the viscosity of the target mud after treatment and the standard viscosity, the sand content and the standard sand content, the pH value and the standard pH value, the specific gravity and the standard specific gravity, and the water loss and the standard water loss are recorded as the difference between each performance information parameter of the target mud after treatment and its standard performance information parameter.

[0065] The performance information parameters of the target mud after being processed and the standard performance information parameters thereof whose differences are greater than or equal to the allowable differences are screened and recorded as the performance correction requirement orientation of the target mud after being processed.

[0066] In a specific example, if the difference between the viscosity of the target mud after treatment and the standard viscosity is greater than or equal to the allowable difference, the performance correction requirement of the target mud after treatment is recorded as the viscosity correction requirement.

[0067] If the difference between the sand content of the target mud after treatment and the standard sand content is greater than or equal to the allowable difference, the performance correction requirement direction of the target mud after treatment is recorded as the sand content correction requirement.

[0068] If the difference between the pH value of the target mud after treatment and the standard pH value is greater than or equal to the allowable difference, the performance correction requirement of the target mud after treatment is recorded as the pH value correction requirement.

[0069] If the difference between the specific gravity of the target mud after treatment and the standard specific gravity is greater than or equal to the allowable difference, the performance correction requirement direction of the target mud after treatment is recorded as the specific gravity correction requirement.

[0070] If the difference between the water loss of the target mud after treatment and the standard water loss is greater than or equal to the allowable difference, the performance correction requirement of the target mud after treatment is recorded as the water loss correction requirement.

[0071] The specific method of correcting the performance of the target mud is: correcting the performance of the target mud according to the correction method of each predefined performance information parameter.

[0072] It should be further explained that the correction method of each performance information parameter of the predefined principle includes: (1) Viscosity performance: If the viscosity of the target mud is lower than the standard viscosity, a thickener such as bentonite or CMC (carboxymethyl cellulose) can be added. The thickener is slowly added to the mud in a certain proportion, and the stirring device is turned on at the same time. Stirring is continued for more than 30 minutes to ensure uniform dispersion. After that, the viscosity is tested again and the addition amount is adjusted as needed.

[0073] If the viscosity of the target mud is higher than the standard viscosity, add an appropriate amount of dispersant, such as sodium carbonate or sodium hexametaphosphate. First, prepare the dispersant into a solution, and then gradually add it dropwise into the mud while stirring. Wait for a while after each addition to test the viscosity until it reaches the ideal range.

[0074] (2) Sand content performance: If the sand content of the target mud is higher than the standard sand content, use cyclone desander, vibrating screen and other equipment to strengthen the desanding process, and treat the mud in multiple cycles until the sand content is reduced to the standard range. During this period, the sand content should be tested regularly to monitor the treatment effect.

[0075] If the sand content of the target mud is lower than the standard sand content, the treated returned sand will be re-introduced into the mud circulation system.

[0076] (3) pH performance: If the pH value of the target mud is lower than the standard pH value, add alkaline substances to increase the pH. Commonly used substances include sodium hydroxide and calcium hydroxide. After preparing them into a solution, slowly add them to the mud and monitor in real time with a pH meter while stirring.

[0077] If the pH value of the target mud is higher than the standard pH value, add an appropriate amount of acidic substance to adjust it, such as dilute hydrochloric acid or acetic acid. Also prepare a solution, add dropwise and stir, and monitor the pH in real time until it meets the requirements.

[0078] (4) Specific gravity performance: If the target mud specific gravity is lower than the standard specific gravity, add weighting materials, such as barite powder or iron ore powder, stir while adding, and measure frequently with a mud hydrometer to accurately control the amount of addition so that the specific gravity gradually approaches the standard value.

[0079] If the target mud density is higher than the standard density, add water to dilute it and turn on the stirring device to allow the water and mud to be fully mixed. After dilution, test it with a hydrometer and add water in small amounts several times until the density meets the standard.

[0080] (5) Water loss performance: If the water loss of the target mud is higher than the standard water loss, add a water loss reducer. Common water loss reducers include starch and cellulose ether. First, prepare the water loss reducer into a solution, then slowly add it to the mud. After sufficient stirring, perform a water loss test and adjust the amount of addition based on the test results.

[0081] If the water loss of the target mud is lower than the standard water loss, add inorganic salts, such as sodium chloride and calcium chloride. First, prepare the inorganic salt into a solution, and then add it to the mud in small amounts and multiple times. Stir it thoroughly after each addition and test the water loss to prevent excessive addition from affecting the overall performance of the mud and causing abnormal phenomena such as flocculation and precipitation.

[0082] The present invention determines the performance correction requirement direction of the target mud after treatment by analyzing the performance evaluation of the target mud after treatment, which helps to ensure that the key properties of the target mud, such as viscosity, specific gravity, pH value, sand content, water loss, etc., always meet the construction requirements, ensure the stability of the bored pile hole wall, and avoid the occurrence of accidents such as hole collapse and diameter shrinkage of the bored pile hole wall.

[0083] The mud treatment effect evaluation module is used to obtain the reverse circulation evaluation index, primary screening evaluation index, secondary screening evaluation index and deep treatment evaluation index of each historical mud cycle, analyze the mud treatment effect evaluation coefficient, and feed it back.

[0084] As a preferred feasibility example, the specific analysis method of the mud treatment effect evaluation coefficient is: extract the reverse circulation evaluation index, primary screening evaluation index, secondary screening evaluation index and deep treatment evaluation index of each historical mud cycle from the database, and record them as ,in , is the number of each historical mud cycle, is the number of historical mud cycles, and is used to analyze the mud treatment effect evaluation coefficient ,in For the history The second and historical The comprehensive evaluation index of the mud cycle, is the set comprehensive evaluation index, and ,in They are the weight factors of the comprehensive evaluation index corresponding to the set reverse circulation evaluation index, primary screening evaluation index, secondary screening evaluation index and deep processing evaluation index.

[0085] A specific example, .

[0086] Deep treatment directly determines whether the mud can meet the requirements of high-precision construction and is related to the quality of the pile. If this stage is not handled properly, all the previous work may be in vain. For example, if the light transmittance and particle concentration of the supernatant of the treated mud do not meet the standards, it is very likely to cause serious defects such as mud inclusions and holes in the pile body, and there is almost no room for remediation. Therefore, the weight factor of the deep treatment evaluation index corresponding to the comprehensive evaluation index is assigned to 0.4.

[0087] Primary screening is the first line of defense in mud treatment. It intercepts large particles, removes a large amount of impurities and gases, and lays the foundation for subsequent treatment. If the primary screening effect is poor, the equipment load of the subsequent secondary screening and deep treatment will increase dramatically, and even cause rapid damage to the equipment, thereby delaying the construction period. Therefore, the weight factor of the primary screening evaluation index corresponding to the comprehensive evaluation index is assigned a value of 0.3.

[0088] Secondary screening is a supplement and refinement of primary screening, further reducing the sand content and optimizing the particle grading. Although its effect also affects the mud performance, it can be compensated to a certain extent by subsequent deep processing. Therefore, the weight factor of the secondary screening evaluation index corresponding to the comprehensive evaluation index is assigned to 0.3.

[0089] Reverse circulation mainly involves the flow rate and stability of mud, and is more about ensuring the smoothness of mud circulation. Compared with the previous processing links that are directly related to the purity and performance of mud, even if there are problems, the impact of rectification on the overall mud quality is not so fatal. Therefore, the weight factor of the reverse circulation evaluation index corresponding to the comprehensive evaluation index is assigned to 0.1.

[0090] The database is used to store the standard density value, standard viscosity, standard sand content, standard pH value, standard specific gravity and standard water loss of the target mud during initial preparation, and to store the reverse circulation evaluation index, primary screening evaluation index, secondary screening evaluation index and deep processing evaluation index of each historical mud cycle.

[0091] The present invention analyzes the mud treatment effect evaluation coefficient based on the reverse circulation evaluation index, primary screening evaluation index, secondary screening evaluation index and deep processing evaluation index of each historical mud circulation, which is helpful to understand the changing trend of the equipment treating the target mud in the historical mud circulation process, so as to timely understand the processing stage of the target mud in the mud circulation process where problems may exist, and conduct targeted troubleshooting of equipment failures or optimize operating procedures, which is conducive to quickly resolving potential hidden dangers, avoiding the recurrence of problems, and ensuring the smooth progress of subsequent construction.

[0092] The above contents are merely examples and explanations of the concept of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the present invention, they shall all fall within the protection scope of the present invention.

Claims

1. An intelligent mud processing system for bored pile construction in pebble strata, characterized by: include: The reverse circulation treatment demand analysis module is used to record the mud used in the construction of bored piles in the target pebble formation as the target mud, obtain the mud flow rate and mud flow rate stability of the target mud in the reverse circulation process, analyze the reverse circulation evaluation index of the target mud based on this, and judge the reverse circulation treatment demand of the target mud; The primary screening treatment demand analysis module is used to obtain the residual particle size distribution diagram and gas content of the target mud during the primary screening process, analyze the primary screening evaluation index of the target mud and determine the primary screening treatment demand; The secondary screening processing demand analysis module is used to analyze the target mud residual particle size distribution diagram, sand content and purity obtained during the secondary screening process to obtain the secondary screening evaluation index of the target mud and determine the secondary screening processing demand of the target mud; The deep processing requirement analysis module is used to analyze the light transmittance and particle concentration of the supernatant of the target mud obtained during the deep processing process, obtain the deep processing evaluation index of the target mud, and determine the deep processing requirement of the target mud; The performance correction requirement analysis module is used to obtain the performance information parameters of the target mud after being processed, determine the performance correction requirement direction of the target mud after being processed, and perform performance correction on the target mud accordingly; The mud treatment effect evaluation module is used to obtain the reverse circulation evaluation index, primary screening evaluation index, secondary screening evaluation index and deep treatment evaluation index of each historical mud cycle, analyze the mud treatment effect evaluation coefficient, and feedback it; The database is used to store the standard density value, standard viscosity, standard sand content, standard pH value, standard specific gravity and standard water loss of the target mud during initial preparation, and to store the reverse circulation evaluation index, primary screening evaluation index, secondary screening evaluation index and deep processing evaluation index of each historical mud cycle.

2. The intelligent processing system for mud in the construction of bored piles in pebble strata according to claim 1 is characterized by: The specific analysis method of the reverse circulation evaluation index of the target mud is: The mud flow rate and mud flow rate stability of the target mud during the reverse circulation process are respectively recorded as , analyze the reverse circulation evaluation index of the target mud ,in The standard mud flow rate of the target mud in the reverse circulation process is set. It is the permissible difference between the set mud flow rate and the standard mud flow rate; The reverse circulation evaluation index of the target mud is compared with the preset reverse circulation evaluation index threshold. If the reverse circulation evaluation index of the target mud is greater than or equal to the reverse circulation evaluation index threshold, the reverse circulation treatment demand of the target mud is recorded as a demand that does not require treatment; otherwise, the reverse circulation treatment demand of the target mud is recorded as a demand that requires treatment.

3. The intelligent processing system for mud in the construction of bored piles in pebble strata according to claim 2 is characterized by: The specific analysis method of the primary screening evaluation index of the target mud is: Extract the particle size distribution diagram of the target mud residual particles in the primary screening process, and obtain the mean value in the particle size distribution diagram of the target mud residual particles in the primary screening process, which is recorded as the symbolic particle size of the target mud residual particles in the primary screening process. ; Extract the gas content of the target mud during the primary screening process ; Analyze the primary screening evaluation index of the target mud ,in The reference symbolic particle size of the residual particles in the target mud during the primary screening process is set. It is the minimum value set to prevent the denominator from being 0, and its unit is dimensionless; The primary screening treatment requirement of the target mud can be obtained by judging the reverse circulation treatment requirement of the target mud.

4. The intelligent processing system for mud in the construction of bored piles in pebble strata according to claim 3 is characterized by: The specific analysis method of the secondary screening evaluation index of the target mud is: Extract the particle size distribution diagram of the residual particles of the target mud in the secondary screening process. The symbolic particle size of the residual particles of the target mud in the primary screening process is obtained in the same way as the symbolic particle size of the residual particles of the target mud in the secondary screening process. ; The sand content and purity of the target mud in the secondary screening process are recorded as ; Analyze the secondary screening evaluation index of the target mud ,in They are the reference symbolic particle size and standard sand content of the residual particles of the target mud in the secondary screening process, is the allowable difference between the set sand content and the standard sand content. This is the minimum value set to prevent the denominator from being 0, and its unit is millimeter; The secondary screening treatment requirement of the target mud can be obtained by judging the reverse circulation treatment requirement of the target mud.

5. The intelligent processing system for mud in the construction of bored piles in pebble strata according to claim 4 is characterized by: The specific analysis method of the target mud depth treatment evaluation index is as follows: The transmittance and particle concentration of the supernatant of the target mud during deep treatment are extracted and recorded as , analyze the deep treatment evaluation index of the target mud ,in are the reference supernatant transmittance and reference particle concentration of the target mud during deep treatment, It is the minimum value set to prevent the denominator from being 0, and its unit is per liter; The deep treatment requirement of the target mud can be obtained by judging the reverse circulation treatment requirement of the target mud.

6. The intelligent processing system for mud in pebble stratum bored pile construction according to claim 1 is characterized by: The performance information parameters of the target mud after treatment include viscosity, sand content, pH value, specific gravity and water loss; The performance correction requirements include viscosity correction requirements, sand content correction requirements, pH value correction requirements, specific gravity correction requirements and water loss correction requirements.

7. The intelligent processing system for mud in the construction of bored piles in pebble strata according to claim 6 is characterized by: In the process of determining the performance correction requirement of the target mud after treatment, it is necessary to construct the performance evaluation of the target mud after treatment, and the specific analysis method is as follows: The viscosity, sand content, pH value, specific gravity and water loss of the target mud after treatment are extracted, and the differences are respectively made with the standard viscosity, standard sand content, standard pH value, standard specific gravity and standard water loss of the target mud at the time of initial preparation stored in the database to obtain the differences between the viscosity of the target mud after treatment and the standard viscosity, sand content and standard sand content, pH value and standard pH value, specific gravity and standard specific gravity, and water loss and standard water loss. The differences are further compared with the set allowable differences. If the differences between the viscosity of the target mud after treatment and the standard viscosity, sand content and standard sand content, pH value and standard pH value, specific gravity and standard specific gravity, and water loss and standard water loss are all less than the allowable differences, the performance evaluation of the target mud after treatment is recorded as qualified. Otherwise, the performance evaluation of the target mud after treatment is recorded as unqualified, thereby determining the performance correction demand direction of the target mud after treatment.

8. The intelligent processing system for mud in the construction of bored piles in pebble strata according to claim 7 is characterized by: The specific method for determining the performance correction requirement of the target mud after treatment is as follows: The difference between the viscosity of the target mud after treatment and the standard viscosity, the sand content and the standard sand content, the pH value and the standard pH value, the specific gravity and the standard specific gravity, and the water loss and the standard water loss are recorded as the difference between each performance information parameter of the target mud after treatment and its standard performance information parameter; The performance information parameters of the target mud after being processed and the standard performance information parameters thereof whose differences are greater than or equal to the allowable differences are screened and recorded as the performance correction requirement orientation of the target mud after being processed.

9. The intelligent processing system for mud in the construction of bored piles in pebble strata according to claim 8 is characterized by: The specific method of correcting the performance of the target mud is: correcting the performance of the target mud according to the correction method of each predefined performance information parameter.

10. The intelligent processing system for mud in the construction of bored piles in pebble strata according to claim 5, characterized in that: The specific analysis method of the mud treatment effect evaluation coefficient is: The reverse circulation evaluation index, primary screening evaluation index, secondary screening evaluation index and deep processing evaluation index of each historical mud cycle are extracted from the database and recorded as ,in , is the number of each historical mud cycle, is the number of historical mud cycles, and is used to analyze the mud treatment effect evaluation coefficient ,in For the history The second and historical The comprehensive evaluation index of the mud cycle, is the set comprehensive evaluation index, and ,in They are the weight factors of the comprehensive evaluation index corresponding to the set reverse circulation evaluation index, primary screening evaluation index, secondary screening evaluation index and deep processing evaluation index.

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