CN104131584A - Underground diaphragm wall grooving quality detecting device with electronic compass and underground diaphragm wall grooving quality detecting method - Google Patents
Underground diaphragm wall grooving quality detecting device with electronic compass and underground diaphragm wall grooving quality detecting method Download PDFInfo
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- CN104131584A CN104131584A CN201410244920.8A CN201410244920A CN104131584A CN 104131584 A CN104131584 A CN 104131584A CN 201410244920 A CN201410244920 A CN 201410244920A CN 104131584 A CN104131584 A CN 104131584A
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Abstract
The invention discloses an underground diaphragm wall grooving quality detecting device with an electronic compass and an underground diaphragm wall grooving quality detecting method, and relates to the constructional engineering detecting technology. The underground diaphragm wall grooving quality detecting device with the electronic compass comprises an underground diaphragm wall, a support, a pulley, a signal cable and a main engine connecting line, and is provided with a novel electric winch, a novel main engine and a novel underground probe, wherein the support is arranged in a grooving opening of the underground diaphragm wall; the pulley is arranged on the support; the lower end of the signal cable is connected with the novel underground probe; the higher end of the signal cable is connected with the novel electric winch via the pulley; and the novel electric winch is connected to the novel main engine through the main engine connecting line. By the mechanical contact mode, the underground diaphragm wall grooving quality detecting method is more direct than the traditional sound wave method, so that detection results are accurate and reliable; and the underground diaphragm wall grooving quality detecting device with the electronic compass and the underground diaphragm wall grooving quality detecting method are suitable for detecting the quality of grooving of underground diaphragm walls.
Description
Technical field
The present invention relates to construction work detection technique, relate in particular to a kind of continuous wall trench underground quality detection device and method thereof with electronic compass.
Background technology
Diaphragm wall is in construction work, uses Special digging scouring machine tool, under the condition of mud off, has the groove section of certain length, width and the degree of depth at underground excavation, lays reinforcing cage, concrete perfusion; Then connect each groove section, form continuous underground reinforced concrete wall one.Its Main Function:
1. block underground water, for construction in foundation ditch creates conditions;
2. bear surrounding soil lateral pressure;
3. as body of wall function, use;
4. as the part of foundation, to bear upper load.
Diaphragm wall has been widely used in all kinds of permanent constructions such as dam foundation antiseepage, shaft excavation, industrial premises jumbo basis, city underground, High-Rise Building Deep Foundation, railway and bridge engineering, dock, ship lock, harbour, buried tank, underground detritus tank at present.For guaranteeing the quality of diaphragm wall, the groove section of underground excavation (also claiming continuous wall trench underground) first should meet construction engineering quality requirement.Some local provinces and cities have formulated the technology for detection rules of continuous wall trench underground quality, mandatory provisions the testing requirement to continuous wall trench underground quality, as promulgated < < drilling pouring pile hole, continuous wall trench underground quality detection technology rules > > DGJ32/TJ117-2011 in Jiangsu Province.To the detection of continuous wall trench underground quality, should before laying reinforcing cage, carry out the detection of grooving groove width and grooving verticality, to the requirement of its allowable variation in Table one.
Table one: Jiangsu Province's continuous wall trench underground quality detection technology rules (DGJ32/TJ117 – 2011)
At present, sonic method is the normal detection method about continuous wall trench underground quality of using.
As shown in Figure 1, its checkout gear includes diaphragm wall 10 (measurand), support 11, pulley 12, bearing steel wire 13, signal cable 14, sonic method electric winch 15, main frame line 16, sonic method main frame 17, sonic method underground probe 18 and sonic sensor 19;
Its position and annexation are:
Between diaphragm wall 10, form grooving, notch place in grooving is provided with support 11, on support 11, be provided with pulley 12, the sonic method underground probe 18 that is placed in grooving is connected with the lower end of two bearing steel wires 13, the upper end of two bearing steel wires 13 is connected with sonic method electric winch 15 through pulley 12, and sonic method electric winch 15, main frame line 16 and sonic method main frame 17 are connected successively;
Two sonic sensors 19 are installed on sonic method underground probe 18, and the detected acoustic signals of sonic sensor 19 is delivered in sonic method main frame 17 through main frame line 16.
Its operating principle is:
Sonic sensor 19 transmitting acoustic signals, it is propagated from starting, and then arrives grooving groove face, then the time that reflects back into sonic sensor 19 is exactly the time of advent of acoustic reflection signal; Acoustic reflection signal can be differentiated in the acoustic signals picking up, the time span that its time of advent is as represented in dotted line in Fig. 2.
In grooving, be conventionally full of the muddy water that contains mud, if the spread speed of known acoustic signals in muddy water is v, sonic sensor 19 is to the distance d=v * t/2 of grooving groove face.Under different depth position, by two distance d that sonic sensor 17 is detected, can be plotted on curve as shown in Figure 3.The desired grooving groove width of table one is that these two sonic detection are apart from sum.
On Fig. 3, draw out two medium lines between sonic detection distance, and it is carried out to linear fit, the slope of resulting straight line can represent the desired grooving verticality of table one.
According to the requirement of table one, should become the detection of groove depth, it is to complete by the device for counting depth on electric winch 17.
The domestic normal instrument using is the DM series borehole sidewall detector of Japanese KODEN company.
But in actual applications, there is larger limitation in the successful utilization of sonic method, this be mainly because:
1. in grooving, be full of mixed water, the many mud particles that wherein suspend easily cause that acoustic signals produces the physical phenomenons such as scattering and diffusion, cause the decay of acoustic signals Propagation of Energy, thereby acoustic reflection weak output signal;
2. acoustic signals reflects at grooving groove face place, and reflected intensity depends on the difference of the wave impedance (it equals the product of velocity of wave and Media density) of groove face place both sides medium; Difference is larger, reflects stronger.But because the medium on both sides is respectively earth and mixed water, its wave impedance difference the so large of expectation that be far from, thereby acoustic reflection signal is not strong, causes it not easy to identify;
3. aqueous medium viscosity is higher, and while making near acoustic reflection signal is got back to sonic sensor, originally the acoustic signals of transmitting does not disappear completely; Like this, the synergistic effect of signal has been flooded originally just fainter acoustic reflection signal;
4. the spread speed of sound wave in mixed aqueous medium should be slightly less than the spread speed in pure water, but actual accurate numerical value is difficult, determines, this can affect the computational accuracy of Acoustic Wave Propagation distance.
5. such checkout equipment is heavy, is difficult for carrying, and expensive.
Summary of the invention
The object of the invention is to overcome the limitation of prior art, a kind of continuous wall trench underground quality detection device and method thereof with electronic compass is provided.
The object of the present invention is achieved like this:
One, with the continuous wall trench underground quality detection device (abbreviation device) of electronic compass
This device comprises diaphragm wall (measurand), support, pulley, signal cable, main frame line;
Displacement has electric winch and novel main frame, and is provided with Novel down-hole probe;
Its position and annexation are:
Grooving notch place at diaphragm wall is provided with support, is provided with pulley on support;
The low side of signal cable is connected with Novel down-hole probe, and the high-end of signal cable is connected with electric winch through pulley;
Electric winch is connected on novel main frame by main frame line.
Described Novel down-hole probe includes main circuit board, side arm circuit board, cable plug, compression spring, interconnector, side arm turning cylinder, side arm locking disk, sealed cylindrical, side arm, linear electric motors, linear electric motors screw mandrel, polished rod and dynamic seal ring;
Its position and annexation are:
The lower end of signal cable connects the cable plug of Novel down-hole probe;
Cable plug is arranged on the top of sealed cylindrical;
In sealed cylindrical, be provided with main circuit board, interconnector, linear electric motors, linear electric motors screw mandrel and polished rod; Bottom at sealed cylindrical is provided with dynamic seal ring, and the polished rod being connected with linear electric motors screw mandrel can pass freely through this dynamic seal ring;
The interconnector of Novel down-hole probe couples together cable plug, main circuit board, side arm circuit board and linear electric motors;
The surrounding of Novel down-hole probe is provided with four side arms in cross quadrature position;
Compression spring is arranged on the top of side arm, and its normal pressure applying can make side arm freely outwards open around side arm turning cylinder; Before detection starts, side arm is locked in side arm locking disk;
Linear electric motors drive linear electric motors screw mandrel to move up and down, and linear electric motors screw mandrel connects polished rod, and polished rod connects again side arm locking disk; When detecting beginning, linear electric motors drive side arm locking disk to move downward, and side arm finally can be thrown off side arm locking disk, and relies on the effect of compression spring outwards freely to open.
Two, with the continuous wall trench underground quality determining method (abbreviation method) of electronic compass
This method comprises the following steps:
1. first utilize the electronic compass in Novel down-hole probe, detect on the ground the azimuth (before detection starts, confirming that four side arms are locked in side arm locking disk interior) under the geomagnetic field of continuous wall trench underground;
2. by electric winch, Novel down-hole probe is put into continuous wall trench underground, according to the device for counting depth in electric winch, understand underground probe residing depth location in grooving simultaneously;
3. by the degree of tightness of judgement signal cable, confirm whether underground probe arrives grooving bottom, and detect (table one is desired) one-tenth groove depth by the device for counting depth in electric winch;
4. the linear electric motors in programme-control Novel down-hole probe, to drive linear electric motors screw mandrel and polished rod to move downward, finally make four side arms throw off side arm locking disk and outwards freely open; Two pairs of side arms, in cross positive angle position, therefore, regardless of the azimuth of underground probe, at least have the relative a pair of side arm in position and contact with grooving groove face;
5. programme-control electric winch lifting Novel down-hole probe, under each depth location setting in advance, goes out and stores azimuth that in underground probe, electronic compass detects and the open-angle of four side arms by Novel main is machine-readable;
6. according to the bearing data of the grooving detecting on the ground, and the bearing data of underground probe and the open-angle data of test arm under each depth location in grooving, ground novel main frame can calculate grooving groove width and verticality (and provide result as shown in Figure 3, to meet the requirement of table one).
The present invention has following advantages and good effect:
1. accuracy of detection is high
The accuracy of detection of grooving groove width and verticality depends on the precision that is arranged on the electronic compass on main circuit board in Novel down-hole probe, and the precision of the open-angle sensing chip on side arm circuit board.The azimuth detection range of electronic compass is 0 °～360 °, and its accuracy of detection can reach 1 °; And the detection range of open-angle sensing chip is 0 °～90 °, its accuracy of detection can reach 0.1 °; Generally, whole equipment is without demarcation;
2. testing process is efficient and convenient
Checkout gear is lightweight, and a dead lift is convenient, and operating process is simple; And the equipment that traditional sonic method is used is owing to adopting a signal cable and two bearing steel wires, make the structure of sonic method electric winch more complicated, whole equipment is heavier, sometimes needs crane to coordinate, and could be placed into detection site.
In a word, the present invention adopts mechanical contact, and more traditional sonic method is more direct, so testing result is more accurate and reliable, is applicable to continuous wall trench underground quality examination.
Accompanying drawing explanation
Fig. 1 utilizes sonic method to detect the structural representation of the checkout gear of continuous wall trench underground quality;
Fig. 2 is acoustic reflection signal schematic representation;
Fig. 3 is the curve map that sonic method detects continuous wall trench underground groove width and verticality;
Fig. 4 is the structural representation of this device;
Fig. 5 is the structural representation of Novel down-hole probe;
Fig. 6 is main circuit board circuit theory diagrams;
Fig. 7 is side arm board circuit schematic diagram;
Fig. 8 is programme controlled workflow diagram;
Fig. 9 is that schematic diagram (top view) is detected at continuous wall trench underground azimuth;
Figure 10 .1 is one of continuous wall trench underground inner webs position view (top view);
Figure 10 .2 is two of continuous wall trench underground inner webs position view (top view);
Figure 11 is that side arm projector distance detects schematic diagram (lateral view);
Figure 12 is that side arm projector distance detects schematic diagram (top view);
Figure 13 is side arm end points movement locus schematic diagram (lateral view);
Figure 14 is continuous wall trench underground groove width and verticality result of calculation schematic diagram.
Wherein:
10-diaphragm wall; 11-support; 12-pulley;
13-bearing steel wire; 14-signal cable; 15-sonic method electric winch;
16-main frame line; 17-sonic method main frame; 18-sonic method underground probe;
19-sonic sensor.
20-electric winch; 21-novel main frame;
100-Novel down-hole probe;
1A0-main circuit board;
1A1-communication signal socket;
1A2-serial converter;
1A3-ARM host scm;
1A4-electronic compass;
1A4A-main accelerometer; 1A4B-magnetoresistive transducer;
1A5-digital multi-channel switch;
1A6-side arm signal baseplug;
1B0-side arm circuit board;
1B1-side arm signal current tap socket;
1B2-ARM divides single-chip microcomputer;
1B3-side arm accelerometer.
101-cable plug; 102-compression spring; 103-interconnector;
104-side arm turning cylinder; 105-side arm locking disk; 106-sealed cylindrical;
107-side arm; 108-linear electric motors; 109-linear electric motors screw mandrel;
110-polished rod; 111-dynamic seal ring.
The specific embodiment
Below in conjunction with drawings and Examples to the detailed description of the invention:
One, device
1, overall
As Fig. 4, this device comprises diaphragm wall 10 (measurand), support 11, pulley 12, signal cable 14, main frame line 16;
Displacement has electric winch 20 and novel main frame 21, and is provided with Novel down-hole probe 100;
Its position and annexation are:
Grooving notch place at diaphragm wall 10 is provided with support 11, is provided with pulley 12 on support 11;
The low side of signal cable 14 is connected with Novel down-hole probe 100, and the high-end of signal cable 14 is connected with electric winch 20 through pulley 12;
Electric winch 20 is connected on novel main frame 21 by main frame line 16.
2, functional part
1) electric winch 20
Electric winch 20 provides power to promote or decline Novel down-hole probe 100; It is built-in with general AC motor, and can under programme-control, complete forward or reverse.
2) novel main frame 21
Novel main frame 21 is a kind of general secondary meters, and its internal construction consists predominantly of: general touch demonstration liquid crystal display, general Industry Control computer and general communicating circuit plate.
Touch and show that liquid crystal display receives instruction or the parameter of user's input, and can show testing result;
It is programme-control that Industry Control computer moves independently developed application software, comprises and controls testing process, processing detection data, demonstration or storage testing result (seeing below explanation).
Communicating circuit plate completes the communication function with Novel down-hole probe 100.
Novel main frame 21 carries out data communication by signal cable 14 and Novel down-hole probe 100, and drives electric winch 20, to control the lifting of Novel down-hole probe 100 in grooving; The azimuth of the Novel down-hole probe 100 under each degree of depth of final entry and the open-angle of four side arms 107.
3) Novel down-hole probe 100
As Fig. 5, described Novel down-hole probe 100 includes main circuit board 1A0, side arm circuit board 1B0, cable plug 101, compression spring 102, interconnector 103, side arm turning cylinder 104, side arm locking disk 105, sealed cylindrical 106, side arm 107, linear electric motors 108, linear electric motors screw mandrel 109, polished rod 110 and dynamic seal ring 111;
Its position and annexation are:
The lower end of signal cable 14 connects the cable plug 101 of Novel down-hole probe 100;
Cable plug 101 is arranged on the top of sealed cylindrical 106;
In sealed cylindrical 106, be provided with main circuit board 1A0, interconnector 103, linear electric motors 108, linear electric motors screw mandrel 109 and polished rod 110; In the bottom of sealed cylindrical 106, dynamic seal ring 111 is installed, the polished rod 110 being connected with linear electric motors screw mandrel 109 can pass freely through this dynamic seal ring 111;
The interconnector 103 of Novel down-hole probe 100 couples together cable plug 101, main circuit board 1A0, side arm circuit board 1B0 and linear electric motors 108;
The surrounding of Novel down-hole probe 100 is provided with four side arms 107 in cross quadrature position;
Compression spring 102 is arranged on the top of side arm 107, and its normal pressure applying can make side arm 107 freely outwards open around side arm turning cylinder 104; Before detection starts, side arm 107 is locked in side arm locking disk 105;
Linear electric motors 108 drive linear electric motors screw mandrel 109 to move up and down, and linear electric motors screw mandrel 109 connects polished rod 110, and polished rod 110 connects again side arm locking disk 105; When detecting beginning, linear electric motors 108 can drive side arm locking disk 105 to move downward like this, and side arm 107 finally can be thrown off side arm locking disk 105, and relies on the effect of compression spring 102 outwards freely to open.
As known from the above, this device is that prior art is improved, and signal cable 14 not only transmits detection signal, and the weight of carrying Novel down-hole probe 100, has therefore saved two bearing steel wires, has simplified the structure of electric winch.
* main circuit board 1A0
As Fig. 6, main circuit board 1A0 includes communication signal socket 1A1, serial converter 1A2, ARM host scm 1A3, electronic compass 1A4, digital multi-channel switch 1A5 and side arm signal baseplug 1A6;
Electronic compass 1A4 includes main accelerometer 1A4A and magnetoresistive transducer 1A4B;
Communication signal socket 1A1 is connected with serial converter 1A2;
Side arm signal baseplug 1A6 is connected with digital multi-channel switch 1A5;
Serial converter 1A2, main accelerometer 1A4A, magnetoresistive transducer 1A4B, digital multi-channel switch 1A5 and side arm signal baseplug 1A6 are connected with ARM host scm 1A3 respectively.
The operating principle of main circuit board 1A0:
Main accelerometer 1A4A will detect angle of slope data and be sent in ARM host scm 1A3 by SPI interface, and magnetoresistive transducer 1A4B is sent to by I2C interface the magnetic resistance three-component detecting in ARM host scm 1A3; Finally by the general-purpose algorithm being stored in ARM host scm 1A3, calculate the azimuth under geomagnetic field;
ARM host scm 1A3 can receive respectively the open-angle data that come from four side arm circuit board 1B0 by digital multi-channel switch 1A5;
Side arm circuit board 1B0 is connected to side arm signal baseplug 1A6 by interconnector 103;
ARM host scm 1A3 passes through serial converter 1A2, connecting communication signal plug 1A1, then be connected with cable plug 101 by interconnector 103, to complete the data communication of Novel down-hole probe 100 and ground novel main frame 21.
The main devices of main circuit board 1A0:
* communication signal socket 1A1
Communication signal socket 1A1 selects general RS-422 interface.
* serial converter 1A2
Serial converter 1A2 selects the MAX3422 of MAXIM company, and its effect is to convert RS-232 serial ports (TXD, RXD) to RS-422 serial ports (A, B, Z, Y), so that the transmission of long line.
* ARM host scm 1A3
ARM host scm 1A3 selects the LPC2114 series of Philips company.
The main accelerometer 1A4A of *
Main accelerometer 1A4A selects the ADIS16003 of Analog Devices company, and its 4 holding wire MOSI, MISO by SPI interface, CLK, CS are connected with ARM host scm 1A3.
* magnetoresistive transducer 1AB
Magnetoresistive transducer 1AB selects the HMC5843 of Honeywell company, and its 2 holding wire SDA, SCL by I2C interface are connected with ARM host scm 1A3.
* digital multi-channel switch 1A5
Digital multi-channel switch 1A5 selects general 74LS151, and data I/O mouth (P10, P11, P12) of its address signal end (A0, A1, A2) and ARM host scm 1A3 is connected; The RXDO end of the data output end Y of digital multi-channel switch 1A5 and ARM host scm 1A3 is connected; The data input pin of digital multi-channel switch 1A5 (D0, D1, D2, D3) is connected to side arm signal baseplug 1A6.
* side arm signal baseplug 1A6
Side arm signal baseplug 1A6 selects general purpose I C socket, and its connection comes from the serial data line (TXD0, TXD1, TXD2, TXD3) of four side arm circuit board 1B0; Wherein, the PWM of side arm signal baseplug 1A6 is data transmission synchronization end, and it connects the pwm signal end of ARM host scm 1A3.
* side arm circuit board 1B0
As Fig. 6, side arm circuit board 1B0 divides single-chip microcomputer 1B2 and side arm accelerometer 1B3 to form by the side arm signal current tap socket 1B1, the ARM that connect successively.
The operating principle of test arm circuit board 1B0:
Side arm accelerometer 1B3 is for detection of the open-angle of side arm 107, and testing result is sent to ARM by SPI interface (holding wire MOSI, MISO, CLK, CS) and divides in single-chip microcomputer 1B2;
ARM divides the serial ports output TXD of single-chip microcomputer 1B2 to be connected to the TXD of side arm signal current tap socket 1B1;
ARM divides the synchronizing signal end EINT of single-chip microcomputer 1B2 to be connected to the data transmission synchronization end PWM of side arm signal current tap socket 1B1.
The main devices of side arm circuit board 1B0:
* side arm signal current tap socket 1B1
Side arm signal current tap socket 1B1 selects general purpose I C socket; Its rs 232 serial interface signal output TXD is connected to side arm signal baseplug 1A6 in main circuit board 1A0 (in TXD1, TXD2, TXD3, TXD4).
* ARM divides single-chip microcomputer 1B2
The LPC2114 series that ARM divides single-chip microcomputer 1B2 to select Philips company.
* side arm accelerometer 1B3
Side arm accelerometer 1B3 selects the ADIS16003 of Analog Device company, and its 4 holding wire MOSI, MISO, CLK, CS and ARM by SPI interface divide single-chip microcomputer 1B2 to be connected.
* cable plug 101
Cable plug 101 is a kind of general parts, connects the lower end of signal cable 14, and the upper end of signal cable 14 connects ground electric winch 20 and novel main frame 21.
* compression spring 102
Four compression springs 102 are arranged on respectively on four side arms 107; Compression spring 102 provides normal pressure, side arm 107 can outwards be rotated around side arm turning cylinder 104, and can freely outwards open.
* interconnector 103
Interconnector 103 is for connecting the signal of telecommunication between main circuit board 1A0, four side arm circuit board 1B0 and cable plug 101.
* side arm turning cylinder 104
Side arm turning cylinder 104 is tie points of side arm 107 and sealed cylindrical 111; Test arm 107 can rotate around it.
* side arm locks disk 105
Does is side arm locking disk 105 a kind of?
* sealed cylindrical 106
Sealed cylindrical 106 is main bodys of Novel down-hole probe 100, adopts stainless steel material, can guarantee that Novel down-hole probe 100 100 meters under water (1MPa pressure) normally work.
* side arm 107
Side arm 107 contacts with the groove face of grooving after opening, and along with the variation of groove width, the open-angle of side arm 107 changes thereupon.
* linear electric motors 108
Linear electric motors 108 are a kind of universal products.
* linear electric motors screw mandrel 109
Linear electric motors screw mandrel 109 is a kind of spiral metal stocks.
* polished rod 110
Polished rod 110 is a kind of long metal bars.
* dynamic seal ring 111
Dynamic seal ring 111 is a kind of universal products.
Linear electric motors 108 connect linear electric motors screw mandrel 109 and polished rod 110; Polished rod 110 is connected to side arm locking disk 105 through dynamic seal ring 111; Under the driving of linear electric motors 108, side arm locking disk 105 can move up or down.
Two, method
As Fig. 8, described programme-control comprises the following step:
A, work start;
B, use on the ground the azimuth λ of " Novel down-hole probe " detection grooving;
Whether C, hand inspection four " side arm " in " side arm locking disk ", are to enter step e, otherwise enter step D;
D, manually four " side arms " are put into four " side arm locking disks ";
E, in grooving, transfer " Novel down-hole probe ", and start depth counter counting;
Whether F, hand inspection " signal cable " relax, to confirm whether " Novel down-hole probe " arrives the bottom of grooving; Be to enter step G, otherwise jump to step e;
G, by depth counter, show that the degree of depth of grooving is D; It is S that " Novel down-hole probe " lifting step pitch is set; Calculate the quantity of test point: N=D/S; Degree of depth array H (i): sequence number i=1 is set ... N; Detect while starting: i=N, and: H (N)=D;
H, programme-control " linear electric motors ", and move downward by " linear electric motors screw mandrel " and " polished rod " drive " side arm locking disk ", until throwing off also completely, four " side arm " outwards freely open, to be attached to the groove face of grooving;
I, at the lower record of depth location H (i): the azimuthal angle beta (i) of " Novel down-hole probe ", and the open-angle of four " side arms "
j=1 wherein ... 4;
J, according to side arm length L, the azimuth λ of grooving, the azimuthal angle beta (i) of " Novel down-hole probe ", the open-angle of four " side arms "
calculate width W (i) and the verticality of the grooving under depth location H (i);
K, by step pitch S, promote underground probe: sequence number i ﹤=i-1; Depth location H (i) ﹤=H (i)-S;
L, judgement i≤0, be to enter step M, otherwise jump to step I;
M, stop promoting " Novel down-hole probe ";
N, drafting W (i) – H (i) (i=1 ... N) curve;
The verticality of O, calculating grooving;
P, end-of-job.
Three, operating principle
The present invention is that electronic compass 1A4 (including main accelerometer 1A4A and magnetoresistive transducer 1A4B) and the upper side arm accelerometer 1B3 (open-angle sensing chip) installing of side arm circuit board 1B0 by installing on the main circuit board 1A0 at Novel down-hole probe 100 realizes.
The tilt angle information of the Novel down-hole probe 100 recording according to main accelerometer 1A4A, and the geomagnetic field information that records of magnetoresistive transducer 1AB, used general-purpose algorithm can calculate the azimuth under the geomagnetic field of Novel down-hole probe 100.
The upper side arm accelerometer 1B3 installing of side arm circuit board 1B0 can directly provide the open-angle of side arm 107.
Specific works principle is as follows:
1,, as Fig. 9 (top view), with Novel down-hole probe 100, detect first on the ground the azimuth λ of grooving, the direct north that the reference azimuth of this angle is geomagnetic field.Novel down-hole probe 100 has 4 side arms 107, places Novel down-hole pop one's head in 100 o'clock on ground, and the side arm 107 that wherein sequence number is 1 should vertically point to a face of grooving, and obviously, the side arm 107 that the relative sequence number in position is 3 will vertically point to another face; Now, novel main frame 21 on the ground can be read the azimuth λ of grooving;
2, according to the workflow shown in Fig. 8, grooving quality is detected.At Novel down-hole probe 100, be placed into after grooving, because signal cable 14 likely twists, cause Novel down-hole probe 100 also to twist, thereby its azimuth change; Therefore, this need to detect the azimuth of Novel down-hole probe 100 under each depth location.After testing process finishes, can obtain lower column data:
1) the azimuth λ of grooving;
2) depth D of grooving;
3) under each depth location H (i), the azimuthal angle beta of underground probe 100 (i), the open-angle of four side arms 107
here, the sequence number i=1 of indicated depth position ... N, and N=D/S and H (N)=D, S represents the lifting step pitch of Novel down-hole probe 100; Sequence number j=1 ... 4, indicate four side arms 107.
3, under each depth location, Novel down-hole probe 100 always has at least the relative a pair of side arm in position 107 to contact with grooving groove face, occurs a kind of in two kinds of situations shown in Figure 10 .1 and Figure 10 .2 (top view).The relative a pair of side arm 107 in position that only has shown in Figure 10 .1 contacts with grooving groove face, and two pairs of side arms 107 shown in Fig. 9 all contact with grooving groove face.Which kind of situation judgement belongs to, and only need know whether that the open-angle of a pair of side arm 107 that position is relative reaches maximum.Yet, when carrying out the calculating of grooving groove width, only need to choose arbitrarily a pair of side arm 107 contacting with groove face, position is relative and get final product (this does not reach maximum to the open-angle of side arm 107).
4, as Figure 11 (lateral view), suppose that sequence number is that 1 and 3 side arm 107 is chosen, its side arm length be all L, and its end points is respectively P1 and P3, and pop one's head in 100 vertical center line of Novel down-hole is C0; Under depth location H (i), if the open-angle of side arm 107 is respectively
with
can calculate L1 and L3, it is projector distance in the horizontal direction of side arm 107 (or end points P1 and P3 be C0 to vertical center line horizontal range):
5, as Figure 12 (top view), O point is the central point of Novel down-hole probe 100, and line segment cb and line segment uv point to the normal direction of grooving groove face; Under depth location H (i), above measured horizontal range L1 and L3 be respectively the length of line segment oa and line segment ob; L1 and the L3 projector distance in normal direction is respectively W1 (length of line segment ou) and W3 (length of line segment ov) like this, can calculate:
W1＝L1*cos[β(i)–λ] [3]
W3＝L3*cos[β(i)–λ] [4]
As seen from Figure 11: if
with
unequal, the end points P1 of side arm 107 and P3, not on same horizon, like this, can not be considered as the grooving groove width under depth location H (i) by W1 and W3 sum simply.
6, by Figure 13 (lateral view), set up plane coordinate system (X-Y), X represents horizontal range here, and Y represents depth location.The vertical center line of Novel down-hole probe 100 is C0, its line correspondence X=X0 (X0 can be given as arbitrary value in advance); Depth location H (i) refers to initial point O (intersection point of straight line Y=H (i) and straight line X=X0) on Novel down-hole probe 100 with respect to the vertical distance bottom grooving; The coordinate of side arm end points P1 (X, Y) and P3 (X, Y) is like this:
When Novel down-hole probe 100 is upwards promoted by grooving bottom, side arm 107 end points along the movement locus of depth direction as shown in black circle in Figure 13.
7, the black circle data that occur in Figure 13 are further processed.First two of side arm 107 groups of end points movement locus are carried out to Quadratic Spline Interpolation, obtain spline curve C1 and C3 as shown in figure 14, and suppose that its function expression is respectively X=f1 (Y) and X=f3 (Y); Like this, the desired grooving groove width of table one can be provided by following formula (Y represents any depth location):
W(Y)＝f3(Y)-f1(Y) [7]
As shown in figure 14, the center line curve of spline curve C1 and C3 is C5, its expression formula:
0.5*[f3(Y)+f1(Y)] [8]
Center line curve C 5 is carried out to linear fit, can obtain linear equation:
X=AY+B [9] or,
Parameter 1/A in Y=(1/A) * X-B [10] above formula is the verticality of the desired grooving of table one.
Claims (5)
1. with a continuous wall trench underground quality detection device for electronic compass, comprise diaphragm wall (10), support (11), pulley (12), signal cable (14) and main frame line (16);
It is characterized in that:
Displacement has electric winch (20) and novel main frame (21), and is provided with Novel down-hole probe (100);
Its position and annexation are:
Grooving notch place at diaphragm wall (10) is provided with support (11), is provided with pulley (12) on support (11);
The low side of signal cable (14) is connected with Novel down-hole probe (100), and the high-end of signal cable (14) is connected with electric winch (20) through pulley (12);
Electric winch (20) is connected on novel main frame (21) by main frame line (16);
Described Novel down-hole probe (100) includes main circuit board (1A0), side arm circuit board (1B0), cable plug (101), compression spring (102), interconnector (103), side arm turning cylinder (104), side arm locking disk (105), sealed cylindrical (106), side arm (107), linear electric motors (108), linear electric motors screw mandrel (109), polished rod (110) and dynamic seal ring (111);
Its position and annexation are:
The lower end of signal cable (14) connects the cable plug (101) of Novel down-hole probe (100);
Cable plug (101) is arranged on the top of sealed cylindrical (106);
In sealed cylindrical (106), be provided with main circuit board (1A0), interconnector (103), linear electric motors (108), linear electric motors screw mandrel (109) and polished rod (110); In the bottom of sealed cylindrical (106), dynamic seal ring (111) is installed, the polished rod (110) being connected with linear electric motors screw mandrel (109) can pass freely through this dynamic seal ring (111);
The interconnector (103) of Novel down-hole probe (100) couples together cable plug (101), main circuit board (1A0), side arm circuit board (1B0) and linear electric motors (108);
The surrounding of Novel down-hole probe (100) is provided with four side arms (107) in cross quadrature position;
Compression spring (102) is arranged on the top of side arm (107), and its normal pressure applying can make side arm (27) freely outwards open around side arm turning cylinder (104); Before detection starts, side arm (107) is locked in side arm locking disk (105);
Linear electric motors (108) drive linear electric motors screw mandrels (109) to move up and down, and linear electric motors screw mandrel (109) connects polished rod (110), and polished rod (110) connects again side arm locking disk (105); When detecting beginning, linear electric motors (108) drive side arm locking disks (105) to move downward, and side arm (107) finally can be thrown off side arm locking disk (105), and relies on the effect of compression spring (102) outwards freely to open.
2. by continuous wall trench underground quality detection device claimed in claim 1, it is characterized in that:
Described main circuit board (1A0) includes communication signal socket (1A1), serial converter (1A2), ARM host scm (1A3), electronic compass (1A4), digital multi-channel switch (1A5) and side arm signal baseplug (1A6);
Electronic compass (1A4) includes main accelerometer (1A4A) and magnetoresistive transducer (1A4B);
Communication signal socket (1A1) is connected with serial converter (1A2);
Side arm signal baseplug (1A6) is connected with digital multi-channel switch (1A5);
Serial converter (1A2), main accelerometer (1A4A), magnetoresistive transducer (1A4B), digital multi-channel switch (1A5) and side arm signal baseplug (1A6) are connected with ARM host scm (1A3) respectively.
3. by continuous wall trench underground quality detection device claimed in claim 1, it is characterized in that:
Described side arm circuit board (1B0) divides single-chip microcomputer (1B2) and side arm accelerometer (1B3) to form by the side arm signal current tap socket (1B1), the ARM that connect successively.
4. the method for utilizing the continuous wall trench underground quality detection device described in claim 1 to detect, is characterized in that comprising the following steps:
1. first utilize the electronic compass in Novel down-hole probe, detect on the ground the azimuth under the geomagnetic field of continuous wall trench underground;
2. by electric winch, Novel down-hole probe is put into continuous wall trench underground, according to the device for counting depth in electric winch, understand underground probe residing depth location in grooving simultaneously;
3. by the degree of tightness of judgement signal cable, confirm whether underground probe arrives grooving bottom, and detect into groove depth by the device for counting depth in electric winch;
4. the linear electric motors in programme-control Novel down-hole probe, to drive linear electric motors screw mandrel and polished rod to move downward, finally make four side arms throw off side arm locking disk and outwards freely open; Two pairs of side arms, in cross positive angle position, therefore, regardless of the azimuth of underground probe, at least have the relative a pair of side arm in position and contact with grooving groove face;
5. programme-control electric winch lifting Novel down-hole probe, under each depth location setting in advance, goes out and stores azimuth that in underground probe, electronic compass detects and the open-angle of four side arms by Novel main is machine-readable;
The bearing data of the grooving that 6. basis detects on the ground, and the bearing data of underground probe and the open-angle data of test arm under each depth location in grooving, ground novel main frame can calculate grooving groove width and verticality.
5. by continuous wall trench underground quality determining method claimed in claim 1, it is characterized in that described programme-control is:
A, work start;
B, use on the ground the azimuth λ of " Novel down-hole probe " detection grooving;
Whether C, hand inspection four " side arm " in " side arm locking disk ", are to enter step e, otherwise enter step D;
D, manually four " side arms " are put into four " side arm locking disks ";
E, in grooving, transfer " Novel down-hole probe ", and start depth counter counting;
Whether F, hand inspection " signal cable " relax, to confirm whether " Novel down-hole probe " arrives the bottom of grooving; Be to enter step G, otherwise jump to step e;
G, by depth counter, show that the degree of depth of grooving is D; It is S that " Novel down-hole probe " lifting step pitch is set; Calculate the quantity of test point: N=D/S; Degree of depth array H (i): sequence number i=1 is set ... N; Detect while starting: i=N, and: H (N)=D;
H, programme-control " linear electric motors ", and move downward by " linear electric motors screw mandrel " and " polished rod " drive " side arm locking disk ", until throwing off also completely, four " side arm " outwards freely open, to be attached to the groove face of grooving;
I, at the lower record of depth location H (i): the azimuthal angle beta (i) of " Novel down-hole probe ", and the open-angle of four " side arms "
j=1 wherein ... 4;
J, according to side arm length L, the azimuth λ of grooving, the azimuthal angle beta (i) of " Novel down-hole probe ", the open-angle of four " side arms "
calculate width W (i) and the verticality of the grooving under depth location H (i);
K, by step pitch S, promote underground probe: sequence number i ﹤=i-1; Depth location H (i) ﹤=H (i)-S;
L, judgement i≤0, be to enter step M, otherwise jump to step I;
M, stop promoting " Novel down-hole probe ";
N, drafting W (i) – H (i) (i=1 ... N) curve;
The verticality of O, calculating grooving;
P, end-of-job.
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| CN104963680A (en) * | 2015-06-23 | 2015-10-07 | 武汉中岩科技有限公司 | Control method and device for pore-forming and grooving detection |
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| CN112281938A (en) * | 2020-11-23 | 2021-01-29 | 戴连根 | Pouring amount measuring device for cast-in-place pile and using method thereof |
| CN112359884A (en) * | 2020-10-28 | 2021-02-12 | 武汉中岩科技股份有限公司 | Ultrasonic grooving detection probe device and detection method thereof |
| CN115198783A (en) * | 2022-07-08 | 2022-10-18 | 中交第二航务工程局有限公司 | Construction control method of partition chamber type diaphragm wall anchorage foundation |
| CN115506422A (en) * | 2022-08-23 | 2022-12-23 | 中交二航局第四工程有限公司 | Contact type grooving detection equipment and method suitable for grooving detection of diaphragm wall |
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| CN112281938A (en) * | 2020-11-23 | 2021-01-29 | 戴连根 | Pouring amount measuring device for cast-in-place pile and using method thereof |
| CN115198783A (en) * | 2022-07-08 | 2022-10-18 | 中交第二航务工程局有限公司 | Construction control method of partition chamber type diaphragm wall anchorage foundation |
| CN115198783B (en) * | 2022-07-08 | 2023-09-08 | 中交第二航务工程局有限公司 | Construction control method of compartment type ground continuous wall anchorage foundation |
| CN115506422A (en) * | 2022-08-23 | 2022-12-23 | 中交二航局第四工程有限公司 | Contact type grooving detection equipment and method suitable for grooving detection of diaphragm wall |
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