32 results about "Standard penetration test" patented technology

The invention relates to the technical field of overwater survey, and provides an overwater standard penetration test method and device. The method comprises the following steps: determining a wave displacement predicted value of a test site for carrying out an overwater standard penetration test, and calculating a first acceleration of waves according to the wave displacement predicted value; estimating the motion state of the water platform according to the first acceleration of the wave and the motion state parameter of the water platform so as to determine a displacement predicted value of the water platform; calculating a target expansion amount of an expansion compensation mechanism in the overwater standard penetration test equipment based on the displacement predicted value and the current displacement measured value of the overwater platform; optimizing control parameters of a PID controller according to a particle swarm optimization algorithm so as to enable the difference between the current expansion and contraction amount of the expansion and contraction compensation mechanism and the target expansion and contraction amount to be minimum; and the overwater standard penetration test is carried out based on the telescopic motion of the telescopic compensation mechanism. According to the scheme, the accuracy of the overwater standard penetration test can be improved.

The invention relates to the technical field of geotechnical engineering, in particular to a sandy soil liquefaction discrimination method which comprises the following steps: collecting geological survey data, seismic parameters and soil test and in-situ test results of a target area, and determining parameters required by numerical simulation; a three-dimensional calculation model is constructed, grids are subdivided, a constitutive model is set, static balance and an initial pore pressure field are established, and the accuracy of the model is verified through mechanical balance and fluid balance; dynamic waves are processed and applied, a free field boundary, a seepage mode and mechanical damping are set, a coupling constitutive model is constructed, and monitoring points are arranged on the liquefiable stratum; determining liquefaction according to the effective stress, the pore water pressure time history curve and the excess pore pressure ratio; according to the invention, vertical and lateral deformation after liquefaction can be predicted, quantitative deformation data can be provided, errors of a standard penetration test are reduced, and the problems of small application range and strong regionality are solved; and the judgment result is more accurate through the verification of the excess pore pressure ratio, and a reliable basis is provided for the design of engineering anti-liquefaction measures.

To provide a standard penetration test device that can be made smaller.SOLUTION: A standard penetration test device 1 comprises: a drilling mechanism 3 that holds a rod with a drilling tool connected to the bottom so that the rod can rotate and descend and that uses the drilling tool to drill a hole in the ground that is a measurement position where an N value is determined; a first swivel support 4 that rotatably supports the drilling mechanism 3 to allow the drilling mechanism 3 to be retracted from the measurement position; a hydraulic motor 5 that is provided at an upper end of the first swivel support 4 and rotates the rod held by the drilling mechanism 3 via a gear; an impact mechanism 6 that is connected via a rod to a sampler placed in the hole drilled by the drilling mechanism 3 and drives the sampler into the ground to determine the N value; and a second swivel support 7 that rotatably supports the impact mechanism 6 to allow the impact mechanism 6 to be retracted from the measurement position.SELECTED DRAWING: Figure 1B

The utility model belongs to the field of dynamic sounding, and particularly relates to an anti-rebound protection device of a standard penetration test hammer, which comprises a sounding support, a buffer port is arranged on one side of the sounding support, a buffer support is slidably mounted on the inner side of the buffer port, and a buffer mechanism is arranged on the buffer support. A guide hole is formed in one side of the buffer support, a penetration hammer is slidably mounted on the inner side of the guide hole, an annular protrusion is arranged on the outer side of the penetration hammer, a penetration device is arranged at the bottom of the penetration hammer, a locking shell is fixedly mounted at the top of the penetration device, and a locking mechanism is arranged on the inner side of the locking shell. According to the utility model, when the injection hammer hits the injection device, the injection hammer can be clamped, the danger caused by overhigh rebound height of the injection hammer can be prevented, and through the arranged buffer mechanism, the rebound force of the injection hammer can be effectively buffered, the rebound of the injection hammer is further prevented, and the safety of equipment is increased.

The invention discloses a hole bottom standard penetration test device and a use method, and relates to the field of geotechnical investigation. The device comprises a shell, a heavy hammer, a hammering rod, a rotary driving device and a heavy hammer rising and falling device, the heavy hammer is provided with a bearing and pulling assembly, the heavy hammer rising and falling device is provided with a hooking and pulling assembly, the rotary driving device drives the heavy hammer rising and falling device to rotationally rise and fall, connection or disconnection of the hooking and pulling assembly and the bearing and pulling assembly is achieved, and a Hall effect sensor is used for sensing the connection state. Anti-rotation strips are arranged on the inner wall of the shell, narrow-edge notches and wide-edge notches are formed in the heavy hammer and the heavy hammer rising and falling device respectively to be matched with the anti-rotation strips, and movement stability is guaranteed. When in use, the device is lowered after drilling, the heavy hammer rising and falling device is controlled to be connected through the rotary driving device, the heavy hammer is lifted to freely fall to drive the hammering rod, the operation is repeated until the penetration depth reaches the standard, and the hammering frequency is recorded. The device avoids wiring in the motion stroke of the heavy hammer, improves the stability, solves the problems of deep test hammering energy loss and difficulty in cable winding and unwinding of a traditional device, and improves the test accuracy and applicability.

The present disclosure provides a monitoring system and method for standard penetration under a floating platform, a medium and an electronic device, and relates to the technical field of survey management. The monitoring system comprises an inertial measurement unit, a navigation positioning unit, at least one laser displacement sensor, a standard penetration adjustment system and a data processing unit. The data processing unit is configured to acquire detection data sent by the inertial measurement unit, the navigation positioning unit and the laser displacement sensor, determine a deviation type and a deviation degree of the standard penetrator according to the detection data, determine an adjustment instruction according to the deviation type and the deviation degree of the standard penetrator, and send the adjustment instruction to the standard penetration adjustment system to perform an adjustment operation, so as to control the standard penetrator to align with a standard penetration test point. The present disclosure can improve the accuracy of the standard penetration test result.

The utility model particularly relates to a standard penetration test device based on automation. In the application, the guide rod is arranged to guide'vertical falling 'and'vertical lifting' of the standard hammer, and on the basis, the chain is driven to move through the upper gear and the lower gear, so that the standard hammer which freely falls to the bottom is lifted to a preset initial falling height in a reciprocating manner based on the release arranged on the outer side of the chain, and continuous and constant-speed automatic hammer falling hammering is realized; through mechanical automatic assembly line transmission, manual operation can be liberated, and the test efficiency is improved while the test operation risk is reduced. The preset initial falling height and the preset grounding height of the standard hammer can be accurately controlled by adjusting the set heights of the upper gear and the lower gear in combination with actual working conditions; and in combination with the revolutions of the upper gear and the lower gear, the falling striking times of the standard hammer are counted, and the accurate striking times of the standard hammer are visually displayed on the basis of a counting display screen. Therefore, the test measurement error is greatly reduced.

The application relates to the technical field of water standard penetration tests, and relates to a precision improving device for a water standard penetration test, which comprises a sleeve main body, a fixed platform is welded and fixed to the outer surface of the sleeve main body, a first auxiliary fixed tube is welded and fixed to the fixed platform, a first reinforcing plate is welded and fixed between the bottom of the fixed platform and the first auxiliary fixed tube, and a platform mechanism facilitating the water standard penetration test is arranged on the sleeve main body. The precision improving device for the water standard penetration test is characterized in that the detection platform main body and the bottom plate are arranged on the sleeve main body, the second auxiliary fixed tube is welded and fixed between the bottom plate and the sleeve main body to fix the detection platform main body, and the fixed platform arranged below the detection platform main body on the sleeve main body is welded and fixed with the sleeve main body through the first auxiliary fixed tube, so that the sleeve main body is fixed, and the water standard penetration test is conducted through the detection platform main body.

This invention discloses a three-dimensional stratigraphic modeling method for borehole strategy optimization, comprising the following steps: integrating discrete standard penetration test data, continuous static cone penetration test data, predicted unsampled location data, and existing stratigraphic data into multi-confidence geological exploration data; generating virtual boreholes with stratigraphic rationality using the GA-Stacking machine learning algorithm based on the multi-confidence geological exploration data; performing stratigraphic attribute modeling and interface reconstruction using the radial basis function implicit modeling method based on the original exploration data and virtual borehole data; and conducting uncertainty assessment and borehole layout optimization based on the constructed stratigraphic model. This invention addresses the impact of the sparsity of the original exploration data and the randomness of the modeling process on the accuracy of stratigraphic modeling by proposing an ensemble learning implicit stratigraphic modeling method based on multi-source sparse geological exploration data, providing an effective approach for refined stratigraphic modeling and a scientific basis for geological exploration borehole layout.

The utility model discloses an in-situ standard penetration test device, and relates to the field of standard penetration tests. The device comprises a penetrometer; the sleeve is connected with the penetrometer, and a guide groove is formed in the sleeve; the piercing hammer is positioned in the guide groove and can slide along the guide groove; the automatic unhooking mechanism is located in the guide groove and used for lifting the piercing hammer to a certain height and then releasing the piercing hammer; the hoisting mechanism is used for driving the automatic unhooking mechanism to move up and down; and the guide rod is vertically arranged in the guide groove and is used for ensuring that the piercing hammer is kept vertical in the falling process. The device has the beneficial effects that hammering energy is transmitted to a test soil layer through a rod piece system, and the connection time of rod pieces affects the test implementation efficiency; therefore, according to the scheme, the hammering device and the penetrometer are directly hoisted to the test position by adopting the flexible rope, so that the test installation time is saved.

The present disclosure relates to the technical field of water survey, and provides a water standard penetration test method and device. The method comprises: collecting current water environment data of a water test site of a standard penetration test at a current time, predicting an interval length and amplitude of a next wave of the water test site according to the current water environment data; determining a first influence intensity of the next wave of the water test site on the standard penetration test according to the interval length, the amplitude of the next wave and a drill rod length of a standard penetration test device; determining an adjustment coefficient of a control parameter of a controller in the standard penetration test device at the current time based on the interval length, the amplitude of the next wave and the first influence intensity, so as to adjust the control parameter; and driving a servo hydraulic system in the standard penetration test device to perform a standard penetration operation based on the controller adjusted according to the control parameter. The present disclosure can improve the accuracy of the water standard penetration test.

The application discloses a bridge site area concealed geological anomaly body exploration method based on a hole-in-fall weight seismic source, a receiving survey line is laid out in a bridge drilling construction survey area, a standard penetration test or a conical dynamic penetration probe ramming rock-soil layer vibration is used as a seismic exploration seismic source in in-situ drilling test, a plurality of three-component seismic detectors are laid out along a bridge longitudinal section or a transverse section axis where the drilling is located and receive the vibration signals, single-shot seismic records are formed by collating, a diffraction wave event horizon generated by a concealed geological anomaly body is identified, a diffraction wave is extracted by using time-frequency conversion and a polarization parameter is solved, a diffraction wave propagation space line is constructed based on a rectangular coordinate, a diffraction wave propagation path nearest point coordinate of a detector pair is determined by using a space straight line projection method, and an inversion result profile is formed by a discrete grid point number statistical heat map, a diffraction wave occurrence position is identified, and the concealed geological anomaly body is explained.

The invention provides a monitoring system and method for standard penetration under a floating platform, a medium and electronic equipment, and relates to the technical field of survey management. The monitoring system comprises an inertial measurement unit, a navigation positioning unit, at least one laser displacement sensor, a standard penetration adjusting system and a data processing unit, and the data processing unit is used for obtaining detection data sent by the inertial measurement unit, the navigation positioning unit and the laser displacement sensor. And determining the deviation type and the deviation degree of the standard penetration device according to the detection data, determining an adjustment instruction according to the deviation type and the deviation degree of the standard penetration device, and sending the adjustment instruction to a standard penetration adjustment system to execute adjustment operation so as to control the standard penetration device to be aligned with the standard penetration test point. The accuracy of the standard penetration test result can be improved.

The invention provides a standard penetration test measuring method based on machine vision. The measuring method comprises the following steps of: vertically mounting a height reference rod beside a standard penetration test drill rod, and erecting a high-altitude target camera at a position which is 2.5-3.5 meters away from a test device to record a video of the whole test process; carrying out target detection frame by frame for all videos in the test process, forming an original height sequence of the hammer body at different moments in the standard penetration test process, carrying out Gaussian smoothing processing on the original height sequence, calculating a motion trend by adopting a sliding window difference method, and judging the state of the hammer body; and obtaining the initial position coordinate of each hammering and the end position coordinate of the hammering through the original height sequence of the hammer body, calculating the difference between the initial position coordinate and the end position coordinate as the pixel displacement corresponding to the hammering, and converting the pixel displacement into the actual penetration depth of each hammering. According to the invention, through the machine vision technology, the motion state identification and the strike number of the standard penetration hammer are realized, the operation efficiency is obviously improved, a reliable scale coefficient can be obtained, and the anti-interference capability is strong.

The utility model provides a standard penetration test device. The standard penetration test device comprises a mounting cylinder, a marker post is arranged on the mounting cylinder, a pulley is arranged at the top of the marker post, a penetration rod is arranged in the mounting cylinder in a penetrating manner, a hammering seat is fixedly arranged on the penetration rod, a piercing hammer is arranged on the penetration rod in a penetrating manner, the piercing hammer is positioned on the upper side of the hammering seat, a pull rope is arranged on the piercing hammer, and the pull rope bypasses the pulley; the counter comprises a counting assembly arranged on the mounting cylinder and a triggering piece in transmission connection with the counting assembly, and one end of the triggering piece is in contact with the piercing hammer; the limiting piece is arranged in the mounting cylinder and is used for ensuring that the feeler lever is overlapped with the axis of the mounting cylinder; the supporting piece is arranged on the mounting cylinder and is used for supporting the mounting cylinder; the number of times that the penetration rod is knocked by the piercing hammer is recorded through the counter arranged on the marker post, the triggering piece on the counter is triggered when the penetration rod is knocked by the piercing hammer, the number of times of knocking can be accurately recorded by recording once by the counter when the triggering piece is triggered once, and the problems of missed recording and wrong recording during manual recording are avoided.

The invention provides an automatic in-situ test method and system, and relates to the technical field of in-situ test.The method comprises the steps that it is detected that a winch in a standard penetration method is started to lift a penetration hammer, and the stroke displacement of the winch is monitored in real time through a displacement sensor installed on the winch; when the displacement sensor detects that the stroke displacement of the winch reaches an upper limit position, and the lifting state of the penetration hammer is a stable state, an unhooking mechanism is triggered to release the penetration hammer according to a first verification result and a second verification result; and when the displacement sensor detects that the stroke displacement of the winch reaches a lower limit position, an indication signal is sent to the control system, so that the control system drives the unhooking mechanism to release the penetration hammer. According to the invention, the penetration hammer can be accurately released.

The invention relates to the technical field of overwater survey, and provides an overwater standard penetration test method and device. The method comprises the steps that current water area environment data of an overwater test site of a standard penetration test at the current moment are collected, and the interval duration and amplitude of the next wave of the overwater test site are predicted according to the current water area environment data; according to the interval duration and amplitude of the next wave and the length of a drill rod of the standard penetration test equipment, the first influence strength of the next wave of the overwater test site on the standard penetration test is determined; determining an adjustment coefficient of a control parameter of a controller in the standard penetration test equipment at the current moment based on the interval duration, amplitude and first influence intensity of the next wave, so as to adjust the control parameter, and driving a servo hydraulic system in the standard penetration test equipment to execute standard penetration operation based on the controller after the control parameter adjustment. According to the invention, the accuracy of the overwater standard penetration test can be improved.

The utility model discloses a standard penetration test or detection device of dynamic sounding test, including setting in the tubular frame of test pole outside, and the three above -mentioned depth measuring roller of uniform distribution around test pole, the circumference of all depth measuring roller all presses against the lateral surface of test pole, drives all depth measuring roller synchronous rotation when test pole moves along the axial direction, every depth measuring roller all adopts independent roller revolution sensor collection rotation angle respectively, the tubular frame inserts the vibration monitor and internal computer system in, the rotation angle of every depth measuring roller that roller revolution sensor and vibration monitor will gather, and the vibration data of the tubular frame appearance sends internal computer system, internal computer system calculates the depth of test pole, the penetration and the number of hammering, and shows on the display screen outside the tubular frame. The utility model improves the data acquisition accuracy of standard penetration test or dynamic sounding test, eliminates human error, and reduces the labor intensity of data acquisition.

This invention discloses a non-contact method and terminal equipment for acquiring standard penetration test (SPT) or dynamic penetration test (DPT) data. Utilizing video image data from the construction site, a target detection network and target tracker are used to detect and track the falling hammer. The trajectory of the falling hammer is analyzed to calculate the lowest points during the test. After the test video ends, the number of lowest points N is counted, resulting in the number of impacts N-1. The penetration depth is the depth obtained by converting the difference in the ordinates between two lowest points into an actual physical value. This invention enables automated statistics on the number of hammer impacts and drill pipe penetration depth during SPT or DPT tests, ensuring effective data acquisition, significantly improving work efficiency, and further enhancing data accuracy. It is highly adaptable to various situations during operations and meets the needs of practical engineering projects.

The application provides a kind of standard penetration test measurement method based on machine vision.The measurement method is to install a height reference rod vertically beside the drill rod of standard penetration test, and to set up a high-definition monocular camera at a distance of 2.5-3.5 meters from the test device to record the whole process video of the test;target detection is carried out frame by frame for all videos in the test process to form the original height sequence of the hammer body at different times in the standard penetration test process, and Gaussian smoothing processing is carried out on it;the sliding window difference method is used to calculate the motion trend to judge the state of the hammer body;the starting position coordinates and the ending position coordinates of each hammering are obtained from the original height sequence of the hammer body, the difference between the two is calculated as the pixel displacement corresponding to the current hammering, and the actual penetration depth of each hammering is converted.The application realizes the motion state recognition and the number of blows of standard penetration hammer through machine vision technology, significantly improves the operation efficiency, and can obtain reliable scale factor and strong anti-interference ability.

The invention discloses a detection device for a standard penetration test or a dynamic penetration test and a test data preprocessing method. The detection device comprises a tubular frame arranged outside a test rod and more than three depth measurement rollers uniformly distributed around the test rod, the circumferential surfaces of all the depth-measuring rollers abut against the side surface of the test rod, and all the depth-measuring rollers are driven to rotate synchronously when the test rod moves along the axial direction; each depth measuring roller adopts an independent roller revolution sensor to collect the rotation angle; a vibration monitor and an internal computer system are embedded in the tubular frame; a roller revolution sensor and a vibration monitor send the collected rotation angle of each depth measurement roller and vibration data of the tubular frame to an internal computer system; the internal computer system calculates the depth, the penetration and the hammering number of the test rod and displays the depth, the penetration and the hammering number on the display screen outside the tubular frame. According to the invention, the data acquisition precision of the standard penetration test or the dynamic penetration test is improved, human errors are eliminated, and the labor intensity of data acquisition is reduced.

The invention discloses a three-dimensional site liquefaction discrimination method based on cyclic stress. The discrimination method comprises the following steps: obtaining site seismic parameters and geological map layer conditions; establishing a three-dimensional site grid model to carry out attribute assignment on different soil types; carrying out a field standard penetration test and an indoor static and dynamic triaxial test to obtain soil property parameters; soil property parameters are tested; two times of overlying effective stress correction are carried out to generate a three-dimensional field actual measurement average standard penetration field; generating an equivalent 7.5-level earthquake soil circulation resistance ratio field of the three-dimensional field; a three-dimensional site soil body circulation resistance ratio field is generated; generating a three-dimensional field earthquake cyclic shear stress ratio field; a three-dimensional site anti-liquefaction safety coefficient field is generated; and determining the liquefaction possibility of the three-dimensional site. According to the method, the defects of a traditional simplification method in real stress path expression and soil nonlinear response simulation are effectively overcome; the precision of three-dimensional CRR calculation is improved; and the liquefaction evaluation of the site can be integrally and intuitively carried out. The liquefaction judgment result conforms to the actual situation, and engineering application is guided to be more reasonable and effective.

The present application belongs to the field of geotechnical engineering earthquake liquefaction discrimination, and relates to a three-dimensional site liquefaction discrimination method based on SPT, comprising: obtaining site seismic parameters; obtaining geological soil layer conditions; establishing a three-dimensional site grid model; conducting field standard penetration tests on typical soil types; generating a three-dimensional site measured average standard penetration field; generating a three-dimensional site critical standard penetration field; generating a three-dimensional site anti-liquefaction safety factor field; and discriminating the three-dimensional site liquefaction possibility. The present application ensures data reliability and reduces detection cost through twice correction of overlying effective stress; realizes dynamic coupling analysis of stress state and standard penetration value through stress coupling correction technology, and improves discrimination accuracy; represents spatial distribution characteristics and physical properties of soil layers through establishment of a three-dimensional site grid model; and can overall and intuitively evaluate site liquefaction through a three-dimensional visual discrimination system.

The invention relates to the technical field of offshore wind power exploration, and discloses an in-hole standard penetration test device for offshore wind power exploration. The in-hole standard penetration test device comprises an umbilical cable winch; the in-hole through-standard unit is connected with the umbilical cable winch through an umbilical cable, and the in-hole through-standard unit is driven by the umbilical cable winch to move to a target position in the exploration hole; the in-hole standard passing unit comprises a protective cover, an upper centralizing body arranged at the top of the protective cover, a lower centralizing body arranged at the bottom of the protective cover, a guide rod arranged between the upper centralizing body and the lower centralizing body, a standard penetrating hammer which is connected to the guide rod in a sleeving mode and can move in the axial direction of the protective cover, and an automatic hammer falling device arranged at the top of the standard penetrating hammer. The top of the automatic drop hammer device is connected with a measuring rope with scales; a feeler lever, a force transducer, a single-axis clinometer and a standard penetration device are arranged at the bottom of the lower centralizing body; the diameters of the upper centralizing body and the lower centralizing body are larger than the diameter of the protective cover and slightly smaller than the diameter of the exploration hole; and the computer is connected with the umbilical cable and is used for recording standard penetration parameters. The device is accurate in standard penetration number.

An N-value prediction apparatus according to an embodiment of the present invention includes a hypothetical learning data augmentation unit, based on an actual N-value measured at an actual location according to the Standard Penetration Test through drilling investigation, generating at least one of hypothetical N-values corresponding to a preset hypothetical point based on the actual location, an N-value prediction model learning unit learning ground characteristic data corresponding to each of the actual location and the hypothetical point by artificial intelligence, the ground characteristic data including the actual N-value and the hypothetical N-values, and an N-value prediction result calculation unit predicting an N-value at an arbitrary prediction target point by using an N-value prediction model generated by artificial intelligence learning executed in the N-value prediction model learning unit.

The utility model belongs to the engineering reconnaissance technical field, specifically disclose a kind of hydraulic engineering reconnaissance drilling machine, including power module, derrick module, intelligent control module, standard penetration test subassembly, pulley assembly and load cell;Power module is connected with derrick module, load cell is installed in standard penetration test subassembly, pulley assembly is installed in the top of derrick module, standard penetration test subassembly is hung in derrick module by pulley assembly, power module and load cell are electrically connected with intelligent control module respectively, power module, intelligent control module, standard penetration test subassembly are all detachably arranged with derrick module, power module drives derrick module to go up and down.Lift.The utility model is convenient for the transportation transfer of each module of reconnaissance drilling machine, the state of standard penetration test subassembly is monitored in real time in in-situ experiment process, and the accuracy of in-situ experiment data is improved.

The utility model relates to the field of standard penetration testing devices, in particular to a standard penetration testing rod safety stabilizing device which comprises a supporting table, a sleeve, a mounting table and a detecting rod. The sleeve used for providing a straight and stable operation channel for the detection rod is installed at the center of the supporting table, the detection rod used for completing standard penetration testing is embedded in the sleeve, the installation table used for assisting in supporting the detection rod and collecting testing data is installed at the top end of the supporting table, and the sliding threads are formed in the bottom end of the detection rod. A sliding block is installed on the sliding threads, a sensing table is installed outside the sliding block, an experiment rod is fixedly installed at the center of the bottom end of the sensing table, and the experiment rod can be adjusted through the combination of a fixing clamping plate, a rotating rod and a supporting rod outside the supporting table and the synergistic effect of an angle adjusting plate, a supporting column sheath, a rope fixing column and other components. The device can be stably mounted and fixed without depending on large machinery, and meanwhile, the sensing table can accurately monitor the motion state and stress condition of the detection rod in real time.

The utility model provides an automatic recorder for the number of hammers in a standard penetration test, which belongs to the technical field of engineering survey equipment and comprises a shell, a semicircular magnet, a concave rotating wheel, a line wheel, a slide rod, a slide block, a first traction rope, a limiting piece, a first elastic piece, a second traction rope, an elastic trigger and a triple counter. According to the utility model, the vertical displacement of the drill rod is converted into the transverse displacement of the sliding block by adopting the concave rotating wheel in close contact with the drill rod and the first traction rope, and the triple counter at the lower part is triggered by the elastic trigger on the sliding block, so that the automatic segmented counting of a standard penetration test is realized. When the penetration depth of the standard penetration test is completed, the elastic trigger triggers the buzzer to remind an operator to end the test. According to the utility model, errors caused by manual line drawing and counting can be reduced, the test precision is improved, counting errors are avoided, manual counting procedures are reduced, the efficiency is improved, and the influence of human factors on the test accuracy is reduced.

This disclosure relates to the field of marine surveying technology, and provides a method and apparatus for a marine standard penetration test (SPT). The method includes: determining the predicted wave displacement at the test site for the marine SPT; calculating the first acceleration of the wave based on the predicted wave displacement; estimating the motion state of the marine platform based on the first wave acceleration and motion state parameters of the marine platform to determine the predicted displacement of the marine platform; calculating the target extension / retraction amount of the extension / retraction compensation mechanism in the marine SPT apparatus based on the predicted displacement of the marine platform and the current displacement measurement value; optimizing the control parameters of the PID controller using a particle swarm optimization algorithm to minimize the difference between the current extension / retraction amount of the extension / retraction compensation mechanism and the target extension / retraction amount; and conducting the marine SPT based on the extension / retraction motion of the extension / retraction compensation mechanism. This solution can improve the accuracy of marine SPTs.

The application provides a stone column construction real-time quality evaluation method, device, equipment and storage medium. The method comprises the following steps: collecting the horizontal vibration acceleration data of the vibrator and the current data of the driving motor in real time when the vibrator is working; inputting the vibration acceleration data and the current data into the pre-established dynamic model to obtain the equivalent standard penetration blow count value of the current construction soil body through inversion calculation; comparing the equivalent standard penetration blow count value with the preset compactness threshold value to generate the quality evaluation result of the current construction section. The dynamic model is used to represent the quantitative correlation between the vibration acceleration data, the current data and the soil body compactness, and the soil body compactness is quantified by the standard penetration blow count value. The application realizes the real-time quantitative evaluation of the soil body compactness in the construction process, overcomes the defect of the lag of the traditional standard penetration test, the evaluation result is intuitive and reliable, the construction parameters can be adjusted in time, and the construction quality and efficiency are effectively improved.