CN110904940A - Dynamic sounding automatic test instrument and implementation method - Google Patents
Dynamic sounding automatic test instrument and implementation method Download PDFInfo
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Abstract
The invention discloses a dynamic sounding automatic testing instrument which comprises a hammer seat, wherein a drill rod is detachably arranged at the bottom of the hammer seat, a probe is arranged at the bottom of the drill rod, a guide rod is arranged at the top of the hammer seat, a penetrating hammer is movably arranged on the guide rod, and a data processing module, a laser ranging module and an acceleration module which are connected with the data processing module are arranged at the bottom of the hammer seat; the device comprises a data processing module, a punching hammer, a penetration hammer, a data processing module and a data processing module, wherein the data processing module is used for measuring distance data between the bottom of the hammer seat and the ground and sending the measured distance data to the data processing module; the acceleration module is used for measuring the acceleration and the speed of the downward movement of the drill rod after each hammering, measured data are sent to the data processing module, and the data processing module judges whether the hammering is effective or not according to the acceleration and the speed data. The invention can automatically measure, judge, record and process data and has high efficiency and precision.
Description
Technical Field
The invention relates to the technical field of geotechnical engineering investigation, in particular to a dynamic sounding automatic testing instrument and an implementation method thereof.
Background
Dynamic sounding and standard penetration tests are a common in-situ test method in geotechnical engineering investigation and foundation detection, wherein the dynamic sounding is subdivided into light (10kg), medium (28kg), heavy (63.5kg) and extra heavy (120kg) according to different drop weights, and the tests establish correlation of a hammering number N value, a penetration depth △ H, soil layer compactness, bearing capacity and liquefaction indexes of different types of sounding tests according to engineering experiences (forming national standard GB50021-2001(2009 edition) and some local standards) formed by a large amount of test data, and carry out engineering geological stratification and qualitative evaluation on a stratum.
At present, key data obtained by testing, namely the value of the hammering number N, the penetration depth △ H, the inclination of a drill rod and the total length L of the drill rod are measured by adopting a manual tape measure (tape measure), field manual counting, recording, table look-up and correction are carried out.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an automatic dynamic sounding test instrument and an implementation method thereof, which aim at overcoming the defects of the prior art and have the advantages of automatic measurement, judgment, data recording and processing, high efficiency and high precision.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a dynamic sounding automatic test instrument comprises a hammer base, wherein a drill rod is detachably mounted at the bottom of the hammer base, a probe is mounted at the bottom of the drill rod, a guide rod is mounted at the top of the hammer base, a penetrating hammer is movably mounted on the guide rod, and a data processing module, a laser ranging module and an acceleration module are arranged at the bottom of the hammer base and connected with the data processing module;
the laser beam of the laser ranging module is downward vertically and used for measuring distance data between the bottom of the hammer seat and the ground and sending the measured distance data to the data processing module, the punching hammer hammers the hammer seat for multiple times, the distance data can be measured after each hammering, and the data processing module calculates the penetration depth according to a plurality of distance data;
the main measuring shaft of the acceleration module is vertically downward and used for measuring the acceleration and the speed of the downward movement of the drill rod after each hammering, the measured acceleration and speed data are sent to the data processing module, and the data processing module judges whether the hammering at the time is effective or not according to the acceleration and speed data.
Preferably, the laser ranging modules include three, three the laser ranging modules use the drilling rod axis as the center and are installed in hammer block bottom in annular evenly distributed, the distance data after hammering every time is the average value of the data measured by three laser ranging modules.
Preferably, the data processing module judges whether the current hammering is effective hammering according to the acceleration and the speed, specifically, the acceleration and the speed are compared with a preset acceleration threshold and a preset speed threshold, and if the acceleration and the speed are both greater than the threshold, the current hammering is judged to be effective hammering; otherwise, the hammering is invalid.
Preferably, the bottom of the hammer seat is further provided with a positioning module connected with the data processing module and used for measuring the position coordinates of the drill hole and sending the measured position coordinates to the data processing module, and the data processing module judges whether the position coordinates of the drill hole deviate according to prestored coordinate data.
Preferably, the hammer seat is further provided with a communication module connected with the data processing module, and the communication module is used for sending the measurement data and the calculation data obtained in the data processing module to an upper computer.
Preferably, a reflector is arranged on the drill rod, a through hole matched with the drill rod is formed in the center of the reflector, a plurality of concentric circular lines with the axis of the drill rod as the original point are arranged on the surface of the reflector facing the hammer seat, the radius of the plurality of concentric circular lines is increased at equal intervals, laser of the laser ranging module vertically irradiates downwards on the concentric circular line of the innermost circle, and whether the drill rod inclines or not is judged according to whether a laser point irradiated by the laser ranging module is on the concentric circular line or not.
Preferably, the radius difference between adjacent concentric circle lines is an average value of distance data measured by a 2% x laser ranging module.
Preferably, a horizontal leveling indicating bubble is arranged on the surface of the reflector facing the hammer seat and close to the through hole.
Compared with the prior art, the invention has the beneficial effects that:
(1) the data processing module, the laser ranging module and the acceleration module are arranged at the bottom of the hammer seat, the laser ranging module and the acceleration module are connected with the data processing module, the distance data between a plurality of groups of hammer seats before and after hammering and the ground can be measured by the laser ranging module after the hammer seat is hammered for a plurality of times by the piercing hammer, the distance data are sent to the data processing module, the penetration depth of the drill rod is calculated, and when the hammer seat is hammered by the piercing hammer, the acceleration and the speed of the downward movement of the drill rod after hammering can be calculated by the acceleration module and compared with the acceleration threshold and the speed threshold preset by the system, so that whether the hammering at the time is effective or not is judged, the automatic measurement is realized, the validity of the data can be automatically detected, the invalid data are screened out;
(2) the reflector is arranged, so that light beams emitted by the laser ranging modules can be better presented, workers can conveniently observe the light beams, and the reflector is provided with a plurality of concentric circular lines by taking the center of the reflector as an original point;
(3) by arranging the positioning module, the position of a hole to be detected can be accurately positioned during punching and detection respectively, whether the detection point deviates or not is measured, and the detection precision is improved;
(4) through setting up communication module, can send the measured data and the calculation data that obtain in the data processing module to outside receiving arrangement, realize remote detection, improve the practical scope of device.
Drawings
FIG. 1 is a schematic diagram of the dynamic sounding automatic test apparatus of the present invention;
FIG. 2 is a schematic view of the arrangement of sensors on the hammer carrier according to the present invention;
FIG. 3 is a schematic structural diagram of a reflector according to the present invention;
FIG. 4 is a schematic electrical connection diagram of the present invention;
FIG. 5 is a flowchart of the operation of example 1;
FIG. 6 is a flowchart of the operation of example 2;
FIG. 7 is a flowchart of the operation of example 6.
The labels in the figure are: 1-hammer seat, 2-drill rod, 3-probe, 4-guide rod, 5-punching hammer, 6-automatic unhooking device, 7-data processing module, 8-laser ranging module, 9-acceleration module, 10-instrument type distinguishing module, 11-positioning module, 12-communication module, 13-power module, 14-storage module, 15-state indicating module, 16-sound alarm module, 17-reserved module expansion interface, 18-middle partition board, 19-reflector board, 20-through hole, 21-horizontal leveling indicating bubble and 22-concentric circle line.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention:
example 1
As shown in fig. 1 to 5, the present embodiment provides a dynamic sounding automatic testing apparatus, which includes a hammer seat 1, a drill rod 2, a probe 3, a guide rod 4, a piercing hammer 5, an automatic unhooking device 6, a data processing module 7, a laser ranging module 8, an acceleration module 9, a power module 13, a storage module 14, a status indication module 15, and a sound alarm module 16.
The bottom of the hammer seat 1 is provided with a data processing module 7, a laser ranging module 8, an acceleration module 9, a power module 13, a storage module 14, a state indicating module 15 and a sound alarm module 16 which are connected with the data processing module 7; the laser ranging module 8, the acceleration module 9, the storage module 14, the state indicating module 15 and the sound alarm module 16 are respectively connected with the power module 13, and power can be supplied to each module through the power module 13. The data processing module 7, the laser ranging module 8, the acceleration module 9, the storage module 14, the status indication module 15 and the sound alarm module 16 can all adopt interface schemes such as IIc, 232, 485, SPI, canbus, modlebus and the like, and can transmit signals sent by the data processing module 7 to each module.
The status indication module 15 is connected with the pilot lamp, and the pilot lamp is located outside the equipment storehouse, can send the illumination of different colours according to the instruction of difference for remind measurement personnel, whether detect normally, when data or detection abnormal conditions, data processing module 7 sends the instruction to status indication module 15, thereby control the pilot lamp and light the amber light, thereby warn measurement personnel. The sound alarm module 16 is connected with a sound alarm, the sound alarm is located outside the equipment bin, and when data are abnormal, the data processing module 7 sends an instruction to the sound alarm module 16 so as to control the sound alarm to give an alarm and further prompt detection personnel. The memory module 14 can adopt common technical means such as a memory card and a memory bank in the prior art, and the data processed by the data processing module 7 can be stored in the memory module 14 through the memory module 14 for data storage.
A hole matched with the laser ranging module 8 is formed in the bottom surface of the equipment bin, so that a laser beam of the laser ranging module 8 conveniently irradiates out of the equipment bin, and the laser beam of the laser ranging module 8 is vertically downward; the laser ranging module 8 measures the distance between the laser ranging module and the ground by using a laser beam, the measured distance data is sent to the data processing module 7, the penetrating hammer 5 hammers the hammer seat 1 for multiple times, the distance data after hammering is measured after each hammering, the data processing module 7 calculates the drilling depth of the hammering drill rod 2 at this time according to the distance data before hammering and after hammering, and the total drilling depth of the drill rod 2 is calculated through multiple times of distance data, so that the penetration depth is obtained;
the acceleration module 9 adopts a high-precision three-axis acceleration sensor, a main measuring axis is vertically downward and is used for detecting the acceleration and the speed of the downward movement of the drill rod 2 and sending the measured acceleration and speed data to the data processing module 7, the data processing module 7 compares the acceleration and speed data with a preset acceleration threshold C and a preset speed threshold D (the threshold is a numerical value which meets certain statistical guarantee probability (such as 95 percent and 99 percent) after various types of penetration are counted), and if the acceleration and the speed are both greater than the threshold, the effective hammering is judged; otherwise, the data measured by the invalid hammering laser ranging module 8 is valid data or not; meanwhile, the acceleration module 9 should have a high-precision timing module, the timing precision should be greater than 0.01ms, and the sampling interval should be 0.1 ms.
In this embodiment, the specific detection is performed according to the following steps:
s1: determining a detection position, and drilling a hole at the detection position;
s2: the mobile equipment places the probe 3 in a drill hole to be detected, then the laser ranging module 8 is started, and the distance L between the laser ranging module 8 and the ground is measured1；
S3: lifting the punching hammer 5, enabling the punching hammer 5 to move upwards on the guide rod 4, enabling the acceleration module 9 to measure the acceleration a of the movement of the hammer seat 1 to be less than 0 and the speed v to be less than 0, enabling the data processing module 7 to judge that the hammer is in a hammer starting state, and fixing the punching hammer 5 on the automatic unhooking device 6;
s4: starting the automatic unhooking device, sliding the core-penetrating hammer 5 on the guide rod 4 to hammer the upper surface of the hammer seat 1, and measuring the acceleration a, the speed v and the time t of the downward movement of the hammer seat 1 by the acceleration module 9 and sending the acceleration a, the speed v and the time t to the data processing module 7;
s5: the data processing module 7 detects data, when C > a and D > v, the data processing module 7 judges that the hammering state is invalid (possibly caused by insufficient weight height or insufficient weight quality, operation error of workers and the like), at the moment, the data processing module 7 controls the state indicating module 15 and the sound alarm module 16 to operate, the state indicating lamp lights the yellow light, and the sound alarm gives out voice at the same timeAlarming; when the acceleration a is larger than C and v is larger than D, the data processing module 7 judges that the impact is effective, and the laser ranging module 8 measures the distance L between the laser ranging module and the ground again2Sending the data to the data processing module 7 and calculating the penetration depth H through the data processing module 71＝L2-L1Will probe depth H1And the number of hits 1 is recorded in the memory module 14;
s6: repeating the steps S2-S4, and recording the total hammering number NiWhen the total penetration depth ∑ H is 1.2.3 … i, the total penetration depth ∑ H is calculated as H1+H2+…HiAnd stored in the memory module 14.
Example 2
As shown in fig. 6, in this embodiment, basically the same as embodiment 1, only three laser ranging modules 8 are provided, three middle partition plates 18 for respectively installing the laser ranging modules 8 are provided in the equipment bin, and the three middle partition plates 18 are uniformly distributed in an annular shape with the vertical axis of the drill rod 2 as the center of circle; the three laser ranging modules 8 are respectively arranged on different middle partition plates 18, the distances r from the three laser ranging modules 8 to the axis of the drill rod 2 are equal, and the acceleration module 9 is arranged on any one middle partition plate 18. The outer wall of the equipment bin is provided with three knobs for adjusting the initial gradient value of the laser ranging module 8, and the verticality of the laser beam emitted by the laser ranging module 8 is adjusted by manually rotating the knobs.
In this embodiment, the specific detection is performed according to the following steps:
s1: determining a detection position, and punching a hole at the detection position;
s2: the mobile equipment places the probe 3 in a drill hole to be detected, then simultaneously starts the three laser ranging modules 8, and simultaneously measures the distance L between the laser ranging modules 8 and the grounda，Lb，LcAfter measurement, the data are transmitted to the data processing module 7, and the data processing module 7 calculates the maximum difference value Lmax ═ max (L) of the three distancesa，Lb，Lc)-min(La，Lb，Lc) And calculating the inclination B (the inclination of the measurement item) according to the distances r from the three laser ranging modules 8 to the axis of the drill rod 2The degree specification stipulates that the maximum limit does not exceed 2%, i.e. it is required that B.ltoreq.2%), B.max (La，Lb，Lc)-min(La，Lb，Lc))/(r√3)；
S3, if B is less than or equal to 2%, the inclination requirement is met, and the average △ L is calculated to be (L)a+Lb+Lc) A/3; if B is larger than or equal to 2%, the requirement of inclination is not met, the initial inclination of the laser beams emitted by the three adjusting laser ranging modules 8 is adjusted through rotating the knob, and the step S2 is repeated after the initial inclination is adjusted until B is smaller than or equal to 2%, the requirement of inclination is met;
s4: lifting the piercing hammer 5, enabling the piercing hammer 5 to move upwards on the guide rod 4, enabling the acceleration module 9 to measure the acceleration a of the movement of the hammer base 1 to be less than 0 and the acceleration v of the movement of the hammer base to be less than 0, enabling the data processing module 7 to judge that the movement is in a state of lifting the drill rod 2 or adding the drill rod, and fixing the piercing hammer 5 on the automatic unhooking device 6;
s5: starting the automatic unhooking device, enabling the punching hammer 5 to slide downwards on the guide rod 4 to hammer the upper surface of the hammer seat 1, and enabling the acceleration module 9 to measure the acceleration a, the speed v and the time t of the downward movement of the hammer seat 1 and feed back the acceleration a, the speed v and the time t to the data processing module 7;
s6: when C is greater than a and D is greater than v (C, D is a value satisfying a certain statistical guarantee probability (such as 95% and 99%) after various types of sounding are counted), the data processing module 7 determines that the data processing module 7 is in an invalid hammering state (possibly caused by reasons such as insufficient weight height or insufficient weight quality, and operation errors of workers), and at the moment, the data processing module 7 controls the state indicating module 15 and the sound alarm module 16 to operate, the state indicating lamp is turned on, and the sound alarm gives out a sound alarm; when the acceleration a is larger than C and v is larger than D, the data processing module 7 judges that the impact is effective, and at the moment, the three laser ranging modules 8 measure and measure the distance L between the laser ranging modules 8 and the ground againd，LeAnd LfThe data is sent to the data processing module 7 and the average △ Li (L) is calculated by the data processing module 7d+Le+Lf) And/3, calculating the penetration depth H through the data processing module 71＝△Li△ L, penetration depth H1And number of hammering 1 recordIn the memory module 14;
s7: repeating the steps S2-S6, and recording the total hammering number NiWhen the total penetration Σ H is 1.2.3 … i, the total penetration Σ H is calculated as H1+H2+…HiAnd stored in the memory module 14.
Further, the acceleration a, the speed v and the time t measured by the acceleration module 9 are used for calculating the quadratic integral displacement △ S of the current acceleration, and if △ S is more than H1If the precision of the acceleration module 9 meets the requirement of penetration measurement, the laser ranging module 8 can be selected to be closed when a rod is added or an abnormality occurs, and the power-saving working state is realized. However, the error correction is performed by periodically using the measured data of the laser ranging module 8, so as to avoid the accumulated error. In practice, different schemes for turning off the laser ranging module 8 are determined according to different values of E meeting measurement and engineering requirements, namely, different power saving schemes are corresponding to the different schemes, and the schemes can be generally divided into several power saving schemes such as general measurement, high-precision measurement and longest endurance measurement.
Example 3
This embodiment is basically the same as embodiment 1, except that a positioning module 11 connected to the data processing module 7 is additionally arranged in the equipment bin. The positioning module 11 is used for measuring the position coordinates of the drill hole, and can judge whether the position of the drill hole deviates or not by respectively measuring the coordinate data of the position of the drill hole twice. First, coordinate data (X) of a detected position is obtained after the detected position is determined1、Y1、Z1) When the detection of the drilled hole is started, the coordinate data (X) of the position of the detected drilled hole is measured again2、Y2、Z2) And data are transmitted to the data processing module 7 and are compared with the positioning accuracy value A of the positioning module 11, if the transverse displacement is within a set interval, the position of the drill hole is considered to be normal, the subsequent steps are continued, if the transverse displacement is not within the set interval, the drill hole is judged to be displaced or deviate from the designed value, at the moment, the data processing module 7 controls the state indicating module 15 and the sound alarm module 16 to operate, the state indicating lamp lights the yellow light, and meanwhile, the sound alarm gives out a sound alarm.
Example 4
The embodiment is basically the same as embodiment 1, only the communication module 12 is additionally arranged in the equipment bin, and the communication module 12 can adopt wireless connection modes such as zigbee, wifi, gprs and the like, and can also adopt wired connection modes such as 232, 485 and the like. Data in the storage module 14 are transmitted to the outside in real time, result data are output, remote monitoring and automatic measurement are achieved, the operation is circulated until a test project is finished, data output is more convenient, and working efficiency is improved.
Example 5
This embodiment is substantially the same as embodiment 1, except that an instrument type distinguishing module 10 is additionally arranged in the equipment bin for distinguishing different test items, such as N120, N63.5, N28, N10, standard penetration test, and the like. When the device is used, a sliding switch can be connected, the sliding switch is fixedly installed on the outer wall of the equipment bin, the sliding switch is connected with corresponding pins of the instrument type distinguishing module 10, and different test items, such as N120, N63.5, N28, N10, standard penetration test and shutdown can be adjusted respectively by sliding a sliding key on the sliding switch to different positions. Before detection is started, sliding keys are slid onto corresponding switches through different weights of the punching hammers 5 (N120, N63.5, N28 and N10), then testing is started, so that the penetration depth of the drill rod 2 is calculated every 10 times of knocking under different weights of the punching hammers 5, and the hardness and hardness degree of foundation soil is judged through the penetration depth, so that the bearing capacity of a pile foundation or a foundation is determined.
Example 6
The embodiment is basically the same as the embodiment 1, only the reflector 19 is added on the drill rod 2, the reflector 19 is a circular steel plate with a through hole 20 in the middle, the plate thickness is 10mm, the plate outer diameter is 200-300mm, the aperture of the through hole 20 is larger than the diameter of the drill rod 2 by 10mm, the drill rod 2 passes through the through hole 20, the horizontal leveling indication bubble 21 is installed on the surface of the reflector 19 facing the hammer seat 1, which is close to the through hole 20, and the horizontal leveling indication bubble 21 can assist a worker to further judge whether the reflector 19 is in the horizontal position, so that the detection precision is improved.
The surface of the reflector plate 19 facing the hammer base 1 is provided with a plurality of concentric circular lines 22 with the axis of the drill rod 2 as the origin, and the radiuses of the grooves of the plurality of concentric circular lines 22 are equalThe distance increases, the radius r of the groove of each concentric line 22 from inside to outsideiWhen the drill rod 2 is vertical to the ground, the laser beams of the three laser ranging modules 8 are vertically and downwards irradiated on the concentric circular line 22 groove of the innermost circle, i is 0, r0R, when the drill rod 2 is tilted, riThe length of the subaerial drilling rod 2 of x + 2%, according to the laser beam that laser ranging module 8 launches and beat the facula position on reflector panel 19 and subaerial drilling rod 2 length, further judge whether drilling gradient satisfies the requirement that the gradient of "drilling standard" regulation is less than 2%, when three facula all were located the concentric circles that drilling rod 2 length corresponds promptly, the gradient satisfied standard requirement, otherwise unsatisfied standard requirement laser ranging module 8.
In this embodiment, the specific detection is performed according to the following steps:
s1: determining the detection position, punching the detection position, starting the positioning module 11, and obtaining the coordinate data (X) of the detection position1、Y1、Z1)；
S2: sliding a slide switch on the instrument type distinguishing module 10 to a designated position;
s3: the mobile device places the probe 3 in the borehole to be detected, then starts the positioning module 11, and acquires the coordinate data (X) of the detection position again2、Y2、Z2) The data is transmitted to the data processing module 7, compared with the positioning accuracy value A of the positioning module 11, if the transverse displacement is within the set interval, namely-A < (X)2×X2+Y2×Y2)-(X1×X1+Y1×Y1) If the position of the drill hole is less than A, the position of the drill hole is considered to be normal, the subsequent steps are continued, if the position of the drill hole is not met, the drill hole is judged to be shifted or deviate from the design value, at the moment, the data processing module 7 controls the state indicating module 15 and the sound alarm module 16 to operate, the yellow light is turned on by the state indicating lamp, and meanwhile, the sound alarm gives out a voice alarm;
s4: placing the reflector 19 on the ground, observing whether the reflector 19 is horizontal or not through the level leveling indicating bubble 21, and manually adjusting the reflector 19 to be horizontal;
s5: simultaneously starting the three laser ranging modules 8, enabling the laser beams of the three laser ranging modules 8 to vertically and downwards irradiate on the reflector 19, observing whether the three laser beams irradiate on the concentric circle line 22 of the innermost circle, if so, entering the next step, if not, determining that the drill rod 2 is inclined, manually adjusting the drill rod 2 to be horizontal, and enabling the three laser beams to simultaneously irradiate on the concentric circle line 22 of the innermost circle;
s6: by measuring the distance L between the laser ranging module 8 and the grounda，Lb，LcAfter measurement, the data are transmitted to the data processing module 7, and the data processing module 7 calculates the maximum difference value Lmax ═ max (L) of the three distancesa，Lb，Lc)-min(La，Lb，Lc) And calculating the inclination B ═ (max (L) according to the distances r from the three laser ranging modules 8 to the vertical axis of the drill rod 2a，Lb，Lc)-min(La，Lb，Lc))/(r√3)；
S7, if B is less than or equal to 2%, the inclination requirement is met, and the average △ L is calculated to be (L)a+Lb+Lc) A/3; if B is larger than or equal to 2%, the requirement of inclination is not met, the initial inclination of the laser beams emitted by the three adjusting laser ranging modules 8 is adjusted through rotating the knob, and the step S2 is repeated after the initial inclination is adjusted until B is smaller than or equal to 2%, the requirement of inclination is met;
s8: the punching hammer 5 is moved upwards on the guide rod 4, the acceleration module 9 measures the acceleration a of the hammer base 1 to be less than 0 and the acceleration v to be less than 0, the data processing module 7 judges that the punching hammer is in a drilling rod 2 or rod adding state, and the punching hammer 5 is fixed on the automatic unhooking device;
s9: starting the automatic unhooking device, enabling the punching hammer 5 to slide downwards on the guide rod 4 to hammer the upper surface of the hammer seat 1, and enabling the acceleration module 9 to measure the acceleration a, the speed v and the time t of the downward movement of the hammer seat 1 and feed back the acceleration a, the speed v and the time t to the data processing module 7;
s10: the data processing module 7 detects data, and when C is greater than a and D is greater than v (C, D is a value satisfying certain statistical guarantee probability (such as 95% and 99%) after various types of penetration tests are counted), the data processing module processes the dataThe block 7 judges that the hammer is in an invalid hammering state (possibly caused by insufficient weight height or insufficient weight quality, operation errors of workers and the like), at the moment, the data processing module 7 controls the state indicating module 15 and the sound alarm module 16 to operate, the state indicating lamp lights a yellow light, and the sound alarm gives out a voice alarm; when the acceleration a is larger than C and v is larger than D, the data processing module 7 judges that the impact is effective; at this time, the three laser ranging modules 8 measure the distance L between the laser ranging module 8 and the ground againd，LeAnd LfSending the data to the data processing module 7 and calculating the average △ L by the data processing module 7i＝(Ld+Le+Lf) And/3, calculating the penetration depth H through the data processing module 71＝△Li△ L, penetration depth H1And the number of hits 1 is recorded in the memory module 14;
s11: repeating the steps S2-S6, and recording the total hammering number NiWhen the total penetration Σ H is 1.2.3 … i, the total penetration Σ H is calculated as H1+H2+…HiAnd stored in the memory module 14;
s12: the communication module 12 is started to send the data in the data processing module 7 to external receiving equipment (mobile phone, computer, etc.).
As shown in table 1, a table of raw measurement data collected after one detection in this embodiment can obtain raw coordinate data and acceleration data of the drilling position, and distance data from the three laser ranging modules 8 to the reflector 19 before drilling is started.
TABLE 1 raw measurement data sheet
As shown in table 2, for the intermediate processing data sample table collected after one detection in this embodiment, the downward movement speed V and the downward movement S of the hammer seat 1 after the hammer 5 strikes the hammer seat 1, and the penetration depth H of the drill rod 2 can be obtained from the table1And recording whether the test is effective, whether the inclination of the drill hole meets the requirement, and whether the coordinate position of the drill rod 2 is normal.
TABLE 2 intermediate results table for data processing
As shown in table 3, the table is a summary of all the result data after the device performs several detections, and the table can show the change of the overall rod length, the recording of the number of hammering times, and the abnormal condition of the overall detection, so that the operator can conveniently observe the result data. The change of the overall data after multiple detections can be clearly seen through the table, and the change of the rod length data after multiple hammering is recorded, so that the penetration depth is obtained, and the overall earth surface condition is judged.
TABLE 3 summary of results data
Claims (8)
1. The utility model provides a power sounding automatic test instrument, includes hammer carrier (1), hammer carrier (1) bottom demountable installation has drilling rod (2), and probe (3) are installed to drilling rod (2) bottom, and guide arm (4) are installed at hammer carrier (1) top, and movable mounting has punching hammer (5), its characterized in that on guide arm (4): the bottom of the hammer seat (1) is provided with a data processing module (7), a laser ranging module (8) and an acceleration module (9) which are connected with the data processing module (7);
the laser beam of the laser ranging module (8) is downward vertically and used for measuring distance data between the bottom of the hammer seat (1) and the ground and sending the measured distance data to the data processing module (7), the punching hammer (5) hammers the hammer seat (1) for multiple times, the distance data can be measured after each hammering, and the data processing module (7) calculates the penetration depth according to the distance data;
the main measuring shaft of the acceleration module (9) is vertically downward and used for measuring the acceleration and the speed of the downward movement of the drill rod (2) after each hammering, the measured acceleration and speed data are sent to the data processing module (7), and the data processing module (7) judges whether the hammering at the current time is effective hammering according to the acceleration and speed data.
2. The dynamic penetration test apparatus of claim 1, wherein: laser rangefinder module (8) are including three, three laser rangefinder module (8) use drilling rod (2) axis to be annular evenly distributed and install in hammer seat (1) bottom as the center, after hammering every time distance data are three laser rangefinder module (8) measured data's average value.
3. The dynamic penetration test apparatus of claim 1, wherein: the data processing module (7) judges whether the current hammering is effective hammering according to the acceleration and the speed, specifically, the acceleration and the speed are compared with a preset acceleration threshold and a preset speed threshold, and if the acceleration and the speed are both greater than the threshold, the current hammering is judged to be effective hammering; otherwise, the hammering is invalid.
4. The dynamic penetration test apparatus of claim 1, wherein: the hammer seat (1) bottom still is equipped with the orientation module (11) of being connected with data processing module (7) for measure the position coordinate of drilling, and send measured position coordinate to data processing module (7), whether the data processing module (7) judge drilling position coordinate takes place the skew according to the coordinate data that prestore.
5. The dynamic penetration test apparatus of claim 1, wherein: the hammer seat (1) is also provided with a communication module (12) connected with the data processing module (7) and used for sending the measured data and the calculated data obtained in the data processing module (7) to an upper computer.
6. The dynamic penetration test apparatus according to any one of claims 1 to 4, wherein: be equipped with reflector panel (19) on drilling rod (2), reflector panel (19) center is opened has through-hole (20) with drilling rod (2) matching, and reflector panel (19) are equipped with on the face towards hammer block (1) and use drilling rod (2) axis as several concentric circles line (22) of initial point, and the equidistant increase in radius of several concentric circles line (22), the laser of laser rangefinder module (8) is vertical downward irradiation on concentric circles line (22) of inner circle, and whether the laser point that shines according to laser rangefinder module (8) is on concentric circles line (22), judges whether drilling rod (2) take place the slope.
7. The dynamic penetration automatic test instrument according to claim 6, wherein: the radius difference of the adjacent concentric circle lines (22) is 2% multiplied by the average value of distance data measured by the laser ranging module (8).
8. The dynamic penetration automatic test instrument according to claim 6, wherein: and a horizontal leveling indicating bubble (21) is arranged on the surface of the reflector (19) facing the hammer base (1) and close to the through hole (20).
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