CN101705677B - Method and device for automatically detecting thicknesses of penetration type dregs - Google Patents
Method and device for automatically detecting thicknesses of penetration type dregs Download PDFInfo
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- CN101705677B CN101705677B CN2009102729640A CN200910272964A CN101705677B CN 101705677 B CN101705677 B CN 101705677B CN 2009102729640 A CN2009102729640 A CN 2009102729640A CN 200910272964 A CN200910272964 A CN 200910272964A CN 101705677 B CN101705677 B CN 101705677B
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Abstract
The invention discloses a method and a device for automatically detecting the thicknesses of penetration type dregs. The method for automatically detecting the thicknesses of penetration type dregs comprises the steps of: determining the top surface positions of the dregs in a prepressing way; hammering a probe so that the probe penetrates to the dregs till undisturbed soil; measuring penetration amount, and recording corresponding hammering times; finding an inflection point of a relation curve of the penetration amount and the hammering times; and determining the thicknesses of the dregs. The device comprises a test probe, an instrument control box, a control processing unit and a winch, wherein the test probe is sequentially connected with a steel cable, an electric cable and a cablet, the steel cable is fixed and wound on the winch, and the electric cable is connected with the instrument control box; the instrument control box is connected with the control processing unit by the electric cable; the steel cable is also connected with a hammer, and the electric cable is connected with an electric cable joint; a prepressing disc and an inner cylinder body are fastened into a whole through a fixing bolt; the center of the inner cylinder body is provided with a through hole, and the test probe is positioned in the through hole; and an outer protection sleeve, the prepressing disc and an outer cylinder body seal the test probe through a sealing ring. The invention has simple operation process, high testing accuracy and speed as well as automatic recording and analyzing.
Description
Technical field
What the present invention relates to a kind of bored pile pile bottom sediment thickness is quick location, the real-time measurement of benchmark and the detection technique field of analyzing automatically with precompressed, impact and local displacement; More specifically relate to the method that a kind of thicknesses of penetration type dregs detects automatically; Also relate to a kind of thicknesses of penetration type dregs automatic detection device simultaneously, the accurate fast of bored pile pile bottom sediment thickness that is particularly useful for can't arriving deep hole (greater than 100 meters), water-filling (mud) and personnel measured.
Background technology
Pile bottom sediment is loose slag stone or the dregs at the bottom of formed remain in behind when boring drill bit kata-rocks soil body, and it is excessive with the settling amount that causes stake that the existence of blocked up sediment can influence the bearing capacity of stake.Existing relative national standards and standard have clear and definite regulation to sediment thickness, and as being example (JGJ94-94) with " technical code for building pile foundation ", mud off pore-creating filling pile pile bottom sediment thickness index should meet: 1) end bearing pile is less than 50mm; 2) friction end bearing pile, end hold friction pile and diaphragm wall less than 100mm; 3) friction pile is less than 300mm.This strict quality standard has proposed very high requirement to the pile bottom sediment thickness detection apparatus: 1, high accuracy (reaching 0.1mm); 2, measure in real time and fast; 3, has measurement capability in deep hole (greater than 100 meters); 4, has under water (in the mud) measurement capability; 4, can rapid traverse and repeated measurement.
Before the pile with pile after the pile bottom sediment thickness detecting method different, the former is many being the mode of lift heavy hammer, the existence of observational measurement sediment and calculate its thickness; And common employing of the latter surpasses the long boring and coring of stake, judges sediment and measures its thickness with core in kind, if the core of obtaining is imperfect, then can adopt digital boring imaging technique, comes accurately to judge and measure sediment and thickness with hole wall core image.Though the detection method behind the pile is intuitive and reliable, the credible result that obtains, but still the evaluation after belonging to pile foundation engineering and finishing are difficult to change and inherit truely, possibly produce adverse influence to the design and construction of engineering.Therefore, how effectively, accurately and scientifically carry out the preceding pile bottom sediment thickness detection of pile and just become one of key issue that has influence on whole engineering safety.For this reason, the thicknesses of penetration type dregs automatic detection device of the present invention's proposition will fundamentally scientifically solve this technical barrier.
At present, the sediment thickness detection method before the pile is mainly the static(al) penetration method.Measure the sediment top side location through presetting sediment end face mensuration dish, utilize the sediment bottom surface to measure under the self-gravity action of awl after upper load is automatically-unhooked in the slow injection sediment, then until undisturbed soil (natural stratum).The distance of (natural stratum) is sediment thickness from the sediment end face to undisturbed soil.Because in different engineerings place and locational application; The mechanical property and the index of undisturbed soil (natural stratum) can change thereupon; Can't distinguish these variations and have constant static(al) injection rule from heavy load, therefore, it is inevitable that awl injection undisturbed soil (natural stratum) is measured in the sediment bottom surface; The sediment thickness that determine this moment has comprised that part of injection undisturbed soil (natural stratum), greater than the sediment thickness of reality.For enough loads are provided; The equipment of static(al) penetration method will be very huge, and onsite moving is very difficult with operation, and after every completion is once measured; Must determining instrument be risen to ground and read the sediment thickness value, the ability that lacks automatic reading, fast measuring and analyze automatically.
Problem in view of the existence of static(al) penetration method; The present invention proposes the pile bottom sediment thickness detection before a kind of power penetration method is applied to pile; Be the thicknesses of penetration type dregs automatic detection device, make pile preceding pile bottom sediment thickness detecting method and testing arrangement obtain breakthrough and substantial progress.This method adopts traditional precompressed mode to confirm the sediment top side location; Through hammering probe repeatedly make its injection to sediment until undisturbed soil (natural stratum); The injection amount of probe after the each hammering of the automatic record of computer, and the relation curve of formation hammering number and injection total amount.Because the mechanical property of sediment and undisturbed soil (natural stratum) exists than big-difference (being the difference of the order of magnitude at least); Therefore; Tangible flex point must appear on the relation curve of hammering number and injection total amount; Through working out corresponding algorithm routine, make computer be easy to discern this flex point, and calculate sediment thickness.The advantage of power penetration method and testing arrangement is place and environment requirement lower, and is less to the requirement of background informations such as sediment and undisturbed soil (natural stratum) mechanical property, and measuring accuracy is high, speed is fast, record and analysis automated.
Summary of the invention
The object of the invention is exactly in order to overcome the shortcoming and defect that the borehole detection method exists behind the static(al) penetration method and pile before the pile; The method that has been to provide a kind of thicknesses of penetration type dregs to detect automatically; Its principle is simple; Method is feasible, and is lower to place and environment requirement, requires less to background informations such as sediment and undisturbed soil (natural stratum) mechanical properties.
Another object of the present invention is to be to provide a kind of thicknesses of penetration type dregs automatic detection device; This device to test precision is high, speed is fast, record and analysis automated; And simple in structure, easy to operate, be easy to carry about with one, durable in use, good stability, economical and practical, be with a wide range of applications.
To achieve these goals, the present invention adopts following technical measures:
Operating principle of the present invention is:
Utilize sediment and undisturbed soil (natural stratum) mechanical property to have the characteristics of significant difference (being the order of magnitude at least); The thicknesses of penetration type dregs automatic detection device of the present invention's design; Adopt the power penetration method that probe is directly squeezed into sediment in undisturbed soil (natural stratum), the overall process of computer recording test, and according to the relation curve of hammer number and probe displacement; Through calculating, identification and analytic process, realize the automatic detection of sediment thickness; Test probe of the present invention partly utilizes the precompression that provides of deadweight, through the mud on the sediment top of draining, makes the pre-pressed disc bottom surface of test probe be positioned at the sediment end face, and as the relative shift of the accurate measuring probe of test benchmark face; Measuring unit of the present invention utilizes the mutual transfer principle of angle and straight-line displacement; Adopt rotary angle transmitter as measuring cell; Be fixed as one and rotation synchronously with meter wheel, probe and meter wheel are tangent, and the rectilinear motion of probe drives meter wheel and rotates; Rotary angle transmitter record minimum is the probe motion of 0.1mm, and probe maximum linear move distance is 150mm; Controlled processing unit of the present invention utilizes computer communication and control principle and implementation algorithm; Transfer of data to the ground computer that measuring unit obtains is stored, shows, analyzed and calculates; Difference according to the existence of mechanical property in different medium; Set up corresponding algorithm routine, the particular point in the automatic recognition data, thus confirm sediment thickness.
The method that a kind of thicknesses of penetration type dregs detects automatically, its detection method is:
A, confirm sediment top side location (select arbitrarily) with the precompressed mode;
B, hammering probe make its injection arrive sediment until undisturbed soil (natural stratum);
C, measurement injection amount (being the displacement of probe) write down corresponding hammering number;
D, find out the injection amount and the flex point on the relation curve is counted in hammering;
E, confirm sediment thickness.
A kind of device of realizing the thicknesses of penetration type dregs automatic testing method; This device is made up of test probe, wirerope, cable, cablet, instrument control cabinet, controlled processing unit and winch; It is characterized in that: test probe is connected with wirerope, cable and cablet successively; Wirerope is wrapped on the winch, through realizing decline, lifting and the displacement of test probe around arriving winch; Cable is connected with the instrument control cabinet, realizes functions such as power supply, signal transmission; The instrument control cabinet also is connected with cable with controlled processing unit, realizes the real-time Transmission of test data, the figure demonstration of test result and the automatic calculating of sediment thickness.
The test probe of thicknesses of penetration type dregs automatic detection device comprises pre-pressed disc, inner cylinder body, probe, weight, measuring unit, measuring circuit, outer cylinder body, fixed muffle, cable connector, outer casing and set bolt.It is characterized in that: described pre-pressed disc and inner cylinder body fasten as one through set bolt; The center of inner cylinder body is a through hole, and probe is positioned at wherein, and can move up and down; The probe central upper portion has a boring, and weight can move up and down within it, and the hammering probe utilizes hammering that probe is squeezed into the power penetration method of sediment until undisturbed soil (natural stratum).It can be stretched out in the bottom of pre-pressed disc; The cablet that lies in probe top is connected with cable, realizes resetting of probe; Described wirerope is connected with weight, and pull test is popped one's head in and descended, promotes and displacement, and promotes and the release weight.Lie in the wirerope on weight top, realize the action that the aperture is carried hammer and put hammer; Outer cylinder body and inner cylinder body fasten as one through fixed muffle, and probe and weight are restricted to motion in its dead zone, center; Measuring unit is fixed in a side of inner cylinder body, and measuring circuit then is fixed in opposite side, connects through lead between them; Cable connector is connected with the measuring circuit lead with measuring unit, realizes power supply and transfer of data; Measuring unit and measuring circuit are sealed in the test probe by outer casing; Measuring unit is formed (also can be made up of other displacement transducer) by photoelectricity angle-position encoder and meter wheel, and the external hard rubber of meter wheel, diameter are 15.92mm, and meter wheel is fixed on the axle of photoelectricity angle-position encoder; Measuring circuit is made up of 89C51CPU and 82C53 counter.
A kind of thicknesses of penetration type dregs automatic detection device, its testing procedure is:
1, places and jinny in the aperture;
2, wirerope, cable and cablet are connected on the test probe, by artificial or electronic mode test probe is placed the hole through pulley at the bottom of;
3, open the power switch of instrument control cabinet and controlled processing unit, set correlation engineering information (engineering name, testing time, gaging hole numbering etc.) and test parameter (PORT COM, displacement initial value etc.), wait beginning to be tested;
4, promote weight through wirerope, feel stressed after, show that weight has promoted to put in place;
5, put hammer and feel weight hammering probe rapidly, read the displacement of probe on the controlled processing unit this moment, and draw out the relation curve of displacement and hammering number; (asking for an interview the computational methods of specific embodiment sediment thickness)
6, repeat the operation of the 4th and the 5th step, occur the range that tangible flex point or displacement reach 150mm from back zone to curve;
7, controlled processing unit obtains the sediment thickness of this position automatically, through wirerope and cable test probe is moved on on the next position, in shifting process, utilizes the deadweight of test probe and trailing cable that probe is resetted;
8, again the reposition point is tested (5 location points of every Kong Chushe also can require increase or reduce location point quantity according to reality) since the 4th step, from test completion to all location points;
9, preserve all test results, promote test probe to ground, the test in this hole is accomplished.
The bottom of pre-pressed disc has the fixed bolt hole of band counterbore of guide groove 19 and six 60 ° of five equilibriums of six 30 ° of five equilibriums, is respectively applied for the bottom mud of getting rid of pre-pressed disc when test probe is placed in the sediment top and holds the set bolt that can sink in the pre-pressed disc bottom.Probe comprises conical head, anterior movable sealing district, displacement measurement district, rear portion movable sealing district and centre bore; It is characterized in that: described anterior movable sealing district links to each other with conical head, displacement measurement district respectively; The displacement measurement district links to each other with anterior movable sealing district, rear portion movable sealing district respectively, in rear portion movable sealing district, is provided with centre bore, described cable stube cable joint; Described cablet is connected with probe with stube cable, and trailing cable and cablet can make probe reset.Described controlled processing unit is made up of computer and RS232-485 interface convertor; Computer can write down hammering number and displacement; And show its relation curve, and utilize sediment and undisturbed soil (natural stratum) differences of mechanical properties characteristic and characteristic point searching algorithm, realize the assay method of sediment thickness; The RS232-485 interface convertor can be realized the conversion of RS232 to the RS485 interface, thereby utilizes the RS485 interface to realize the long Distance Transmission of test data.Described probe is the three-section type slender rod piece of band conical head, and conical head is through cure process, and anterior movable sealing district and rear portion movable sealing district are through polishing.Described probe central upper portion has a boring, and weight can move up and down within it.Described weight is the two-section type cylinder, and lower edge has four guiding gutters.The displacement of described measuring unit measuring probe.The external hard rubber of described meter wheel.Wherein: conical head has passed through cure process, and intensity is higher, and is not fragile; Polishing has been passed through in anterior movable sealing district and rear portion movable sealing district, and fineness is higher, can realize movable sealing through sealing ring with inner cylinder body better; Roll with measuring unit and contact in the displacement measurement district, ability is the displacement of measuring probe in real time, and precision is higher; Centre bore is the motion and the hammering district of weight.The front and rear portions cross section diameter of weight is different, and the front portion has four guiding gutters, can reduce resistance when weight is moved in centre bore.Measuring unit is made up of sensor and meter wheel, and the external hard rubber of meter wheel is in order to strengthen the contact force in meter wheel and displacement measurement district, to guarantee the precision of displacement measurement.When probe suffers the weight hammering and moves; The displacement measurement district can drive meter wheel and rotate, and sensor and meter wheel rotate synchronously, and measuring circuit is with the turn signal of sensor record exactly; And transfer to the computer on ground, confirm the displacement of probe through converting.
Thicknesses of penetration type dregs automatic detection device through above scheme and measure design; Power penetration method and automatic test technology have been utilized; Real-time relation curve through blow number and injection amount; Set up effective computerized algorithm (asking for an interview the computational methods of specific embodiment sediment thickness), automatically extracted the key point that there is significant difference in sediment and undisturbed soil (natural stratum) mechanical property, reduced demand background informations such as sediment and undisturbed soil (natural stratum) mechanical properties; Solve accuracy, reliability and low efficiency problem that other sediment thickness checkout gear exists, had significant science and economical and practical value.
Test probe utilization of the present invention is artificial or electronic draws through the wirerope on winch; When test probe arrives the test position; Wirerope can be used for doing the action of carrying hammer and putting hammer under manually-operated, and cable (being connected to probe through a cablet) then can make probe reset.
The present invention has the following advantages and good effect:
1) the present invention utilizes the significant difference detection sediment thickness that sediment and undisturbed soil (natural stratum) mechanical property exist, and has reduced the demand to background informations such as sediment and undisturbed soil (natural stratum) mechanical properties.
2) the present invention adopts the power penetration method, can realize repeatedly hammering, guarantees that probe passes sediment, until undisturbed soil (natural stratum).
3) the present invention adopts the real-time displacement mensuration, and displacement that each hammering produced is all handled in the computer on real-time Transmission to ground.
4) the present invention adopts the computer real-time storage, shows, analyzes and calculates, and realizes the automation that sediment thickness is detected.
5) test of the present invention and operating process are simple, and each parts is safe and reliable, not fragile, has reduced testing cost and complexity, has improved the test operability.
6) test philosophy of the present invention is ripe, simple in structure, precision is high, good stability, be easy to assembling and operation, practical.
In a word; The invention provides the scientific method and the utility device of the test sediment thickness that a kind of nature difference characteristic of utilizing power penetration method and different medium realizes, realized high accuracy (0.1mm), wide range (150mm), gun drilling (greater than 100 meters) and measurement (can in a few minutes, accomplish displacement) fast.Device structure is simple, solid and reliable, light portable, can manual work or electric traction, and operating process is simple, and the test analysis automation is to be widely used in on-the-spot a kind of utility device.
Description of drawings
Fig. 1 is a kind of thicknesses of penetration type dregs automatic detection device structural representation;
Fig. 2 is a kind of test probe structural representation;
Fig. 3 is a kind of pre-pressed disc bottom view;
Fig. 4 is a kind of probe structure sketch map;
Fig. 5 is a kind of weight bottom cross-sectional configuration sketch map;
Fig. 6 is a kind of measuring unit structural representation;
Wherein:
The 1-test probe
The 8-pre-pressed disc, 9-inner cylinder body, 10-probe, 11-weight, 12-measuring unit, 13-measuring circuit, 14-outer cylinder body, 15-fixed muffle, 16-cable connector, the outer casing of 17-, 18-set bolt;
The 8-pre-pressed disc
The 19-guide groove, the 20-fixed bolt hole;
The 10-probe
The 21-conical head, the anterior movable sealing of 22-district, 23-displacement measurement district, movable sealing district, 24-rear portion,
The 25-centre bore;
The 11-weight
The 26-guiding gutter;
The 12-measuring unit
27-photoelectricity angle-position encoder, 28-Φ 15.92mm meter wheel.
The specific embodiment
Embodiment 1:
The method that a kind of thicknesses of penetration type dregs detects automatically, its detection method is:
A, confirm sediment top side location (select arbitrarily) with the precompressed mode;
B, hammering probe make its injection arrive sediment until undisturbed soil (natural stratum);
C, measurement injection amount (being the displacement of probe) write down corresponding hammering number;
D, find out the injection amount and the flex point on the relation curve is counted in hammering;
E, confirm sediment thickness.
Embodiment 2:
Below in conjunction with accompanying drawing the present invention is described in further detail:
One, implements structure
1, general structure and annexation:
According to shown in Figure 1, the thicknesses of penetration type dregs automatic detection device is made up of test probe 1, wirerope 2, cable 3, cablet 4, instrument control cabinet 5, controlled processing unit 6 and winch 7.According to the designing requirement of test probe 1, can be the highest the length of configuration wirerope 2 and cable 3 be 200 meters, weight capacity reaches 100 kilograms.Wirerope 2 can be drawn by motor on winch, also can be drawn by manual work.Test probe 1 is connected with wirerope 2, cable 3 and the other end of cablet 4, can implement the action that descends, promotes and be shifted through wirerope 2.Instrument control cabinet 3 places ground with controlled processing unit 4, is connected with cable 3, and by storage battery power supply and the long distance communication of RS-485 interface, and by the automatic detection of computer realization to sediment thickness.
2, modular construction and annexation:
According to Fig. 2, Fig. 3, Fig. 4, Fig. 5 and shown in Figure 6, test probe 1 is cylindrical; Pre-pressed disc 8 with a centre bore and guide groove 19 is positioned at the bottom, is fixed as one through set bolt 18 and inner cylinder body 9, implements static seal by sealing ring; Probe 10 is the three-section type slender rod piece of band conical head, and conical head 21 needs cure process, and anterior movable sealing district 22 and movable sealing district, rear portion 24 need polishing; Probe 10 is positioned at the center of inner cylinder body 9, implements movable sealing by sealing ring and anterior movable sealing district 22 with movable sealing district, rear portion 24, and conical head 21 can stretch out through the centre bore of pre-pressed disc 8 or indentation; Can be known that by Fig. 4 there is a centre bore 25 at the rear portion of probe 10, weight 11 is positioned at wherein, and can move up and down; Weight 11 is the two-section type cylinder, and lower edge has four guiding gutters 26; Outer cylinder body 14 has a centre bore, and the cablet of traction probe 10 and the wirerope of weight 11 pass this hole; Outer cylinder body 14 fastens as one through fixed muffle 15 with inner cylinder body 9, and probe 10 is positioned at wherein with weight 11; Measuring unit 12 is fixed in a side of inner cylinder body 9, utilizes the pulling force of spring, meter wheel 28 is closely rolled with displacement measurement district 23 contact; Through axial and radial direction seal ring, outer casing 17 is sealed in whole electronic devices and components the inside of test probe 1; The sealability of test probe 1 can reach 2MPa, conducts oneself with dignity to be 38Kg, remove buoyancy after, in the bottom of pre-pressed disc 8 21KPa pressure can be provided.
A kind of thicknesses of penetration type dregs automatic detection device, its testing procedure is:
1, places and jinny in the aperture;
2, wirerope 2, cable 3 and cablet 4 are connected on the test probe 1, by artificial or electronic mode test probe 1 is placed the hole through pulley at the bottom of;
3, open the power switch of instrument control cabinet 5 and controlled processing unit 6, set correlation engineering information and test parameter, wait beginning to be tested;
4, promote weights 11 through wirerope 2, feel stressed after, show that weight 11 has promoted to put in place;
5, put hammer and feel weight 11 hammering probes 10 rapidly, read the displacement of probe 10 on the controlled processing unit 6 this moment, and draw out the relation curve of displacement and hammering number; (asking for an interview the computational methods of sediment thickness)
6, repeat the operation of the 4th and the 5th step, occur the range that tangible flex point or displacement reach 150mm from back zone to curve;
7, controlled processing unit 6 obtains the sediment thickness of this position automatically, through wirerope 2 and cable 3 test probe 1 is moved on on the next position, in shifting process, utilizes the deadweight of test probe 1 and trailing cable 3 that probe 10 is resetted;
8, again the reposition point is tested since the 4th step, is set 5 location points, oneself is to the test of all location points completion;
9, preserve all test results, promote test probe 1 to ground, the test in this hole is accomplished.
The computational methods of sediment thickness
If H
cBe sediment thickness, N is the hammering total degree, S
iIt is the displacement of probe after the i time hammering.When being hammered onto the n time, if probe just in time is on the interface of sediment and undisturbed soil (natural stratum), following formula is set up:
K
n/K
o＞E (1)
Wherein: K
n=(S
n-S
0)/n;
K
o＝(S
N-S
n)/(N-n)；
The constant of E for setting
Sediment thickness H then
cBe S
nIf probe is positioned at undisturbed soil (natural stratum), following formula is set up:
K
n-1/K
o＞E (2)
Wherein: K
N-1=(S
N-1-S
0)/(n-1);
Sediment thickness H then
cFor:
H
c＝(S
nK
n-1-nK
n-1K
o)/(K
n-1-K
o) (3)
Usually, hit number and can think the two-section broken line with the relation curve of displacement, computer can calculate sediment thickness automatically through above-mentioned formula thus.But, when the sediment medium is inhomogeneous, hits number and then need represent with the multistage broken line with the relation curve of displacement; For this reason can be by computer elder generation searching inflection point section; Based on the calculating principle of two-section broken line, adopt the mean algorithm of multistage broken line, realize the automatic calculating of sediment thickness.At last, through hitting the relation curve of number and displacement, also can confirm sediment thickness by the manual identified flex point.
Claims (7)
1. the method that detects automatically of a thicknesses of penetration type dregs, its detection method is:
A, confirm the sediment top side location with the precompressed mode;
B, hammering probe make its injection arrive sediment until undisturbed soil;
C, measurement injection amount write down corresponding hammering number;
D, find out the injection amount and the flex point on the relation curve is counted in hammering;
E, confirm sediment thickness.
2. device of realizing the described thicknesses of penetration type dregs automatic testing method of claim 1; It comprises test probe (1), instrument control cabinet (5), controlled processing unit (6) and winch (7); It is characterized in that: test probe (1) is connected with wirerope (2), cable (3) and cablet (4) successively, and wirerope (2) is fixed and is wrapped on the winch (7); Cable (3) is connected with instrument control cabinet (5); Instrument control cabinet (5) is connected with cable (3) with controlled processing unit (6); Described test probe (1) is made up of pre-pressed disc (8), inner cylinder body (9), probe (10), weight (11), measuring unit (12), measuring circuit (13), outer cylinder body (14), fixed muffle (15), cable connector (16), outer casing (17) and set bolt (18), and pre-pressed disc (8) fastens as one through set bolt (18) with inner cylinder body (9); The center of inner cylinder body (9) is a through hole; Probe (10) is arranged in said through hole; Outer cylinder body (14) and inner cylinder body (9) fasten as one through fixed muffle (15), and outer casing (17) utilizes sealing ring to realize the sealing of test probe (1) with pre-pressed disc (8) and outer cylinder body (14).
3. a kind of thicknesses of penetration type dregs automatic detection device according to claim 2 is characterized in that: described wirerope (2) is connected with weight (11) simultaneously.
4. a kind of thicknesses of penetration type dregs automatic detection device according to claim 2 is characterized in that: described cable (3) stube cable joint (16), described cablet (4) is connected with probe (10) with cable (3).
5. a kind of thicknesses of penetration type dregs automatic detection device according to claim 2 is characterized in that: the bottom of described pre-pressed disc (8) has the fixed bolt hole (20) of band counterbore of guide groove (19) and six 60 ° of five equilibriums of six 30 ° of five equilibriums.
6. according to claim 2 or 3 described a kind of thicknesses of penetration type dregs automatic detection devices, it is characterized in that: described weight (11) is the two-section type cylinder, and lower edge has four guiding gutters (26).
7. a kind of thicknesses of penetration type dregs automatic detection device according to claim 2 is characterized in that: described probe (10) central upper portion has a boring.
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| CN102979111A (en) * | 2012-11-30 | 2013-03-20 | 中国十七冶集团有限公司 | Device for measuring sediment thickness of pile base of cast-in-situ bored pile |
| CN103243744B (en) * | 2013-05-30 | 2014-12-03 | 上海绿地建设(集团)有限公司 | Detecting device for sediment thickness of ground foundation engineering construction |
| CN105971034B (en) * | 2016-06-29 | 2018-01-16 | 武汉天宸伟业物探科技有限公司 | A kind of pressure inclination angle type sediment calibrator and its thickness measuring method |
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| CN117779722A (en) * | 2024-02-26 | 2024-03-29 | 中国科学院武汉岩土力学研究所 | Soil layer in-situ testing device and method combining nuclear magnetic resonance with static sounding |
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