CN102031771A - Deep static cone penetration test method for geotechnical engineering - Google Patents
Deep static cone penetration test method for geotechnical engineering Download PDFInfo
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- CN102031771A CN102031771A CN2009100705798A CN200910070579A CN102031771A CN 102031771 A CN102031771 A CN 102031771A CN 2009100705798 A CN2009100705798 A CN 2009100705798A CN 200910070579 A CN200910070579 A CN 200910070579A CN 102031771 A CN102031771 A CN 102031771A
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Abstract
The invention discloses a deep static cone penetration test method for geotechnical engineering. On the basis of the conventional wireless static cone penetration test method, a casing with a protection function is provided for a static cone penetration feeler lever by using the property that a rotary cone penetration vehicle rotatably penetrates a power head, and is rotatably penetrated, the bottom of the casting is provided with a cutting tooth (a rib drill) which contributes to rotatable penetration, and water or slurry with lubrication action, which is provided by the rotary cone penetration vehicle, is fully used by the rotatable penetration of the casing, so that the depth of the rotatably penetrated casting is obviously greater than that of the casting which is penetrated under static pressure and the feeler level can be prevented from being stressed, bent and then broken; therefore, the static penetration depth of a wireless static cone penetration rod can be improved. Tests prove that the method can realize the deep static cone penetration, and the largest test depth in the Tianjin area is 70 meters. The method has the advantages of obviously improving the static cone penetration depth, along with simplicity in operation.
Description
Technical field
The invention belongs to the feeler inspection method of geotechnical engineering, particularly relate to a kind of deep layer static sounding method of testing of geotechnical engineering.
Background technology
Static sounding is to adopt the injection pressure of power source that the feeler inspection probe is pressed into a kind of engineer geological prospecting method that soil layer is implemented in-situ test.
In known static sounding method of testing, the sensor that is arranged at probe is connected with surface recorder by the cable in the feeler lever, has been commonly referred to as the cable feeler inspection, so the pillar of feeler lever and feeler lever must at the uniform velocity be pressed into soil layer synchronously.
In the prior art, no cable static sounding rod member is is normally connected and composed successively by probing rod joint, storage-pole and probe, probe can be single bridge probe or doube bridge probe, and storage-pole is to be provided with the storage device that the analog quantity that the probe body sensors is exported is converted to digital quantity and real-time storage or arrives ground receiving equipment in ground forwarding.Frictional resistance when reducing the feeler lever injection and make static sounding probe reach certain feeler inspection degree of depth, the static sounding probe that has also is provided with reamer, reamer mainly contains straight-tooth shape, cydariform etc., reamer is provided with the center that is connected with the probing rod joint water channel and crosses the water sidewalk for visually impaired people, and the recess on reamer surface is provided with its center and crosses the weep hole that the water sidewalk for visually impaired people is connected.The on-position of reamer is normally between probing rod joint and the storage-pole.
Though above-mentioned cone penetration method can only be applicable to the shallow-layer geological test more than 40 meters obtained application widely in engineer geological prospecting.
In the prior art, a kind of geotechnical engineering original position rotation contact-surveying vehicle, by car body, earth anchor, hydraulic leg, bearing soleplate, oil pump, hydraulic means, feeler lever and sleeve pipe dismounting cutting ferrule, feeler lever and sleeve pipe fairlead, each control valve console is housed to be formed, be characterised in that hydraulic means is made of two hydraulic jacks arranged side by side and piston rod thereof, be provided with synchronization lifting with it between two hydraulic jacks arranged side by side and transmit the main spindle box and the main shaft of injection pressure, main shaft is provided with axle center water channel and the swiveling faucet that is connected vehicle-mounted slush pump, the main shaft lower end is provided with the feeler lever nipple of feeler lever dismounting cutting ferrule and belt lacing water channel, also be provided with feeler lever hydraulic pressure, air-actuated jaw, console also is provided with the control valve of main shaft and vehicle-mounted slush pump oil motor, the quick liter of two hydraulic jacks arranged side by side, fast prompt drop and unsteady control valve and each the anchor clamps control valve of falling.
The utility model of notification number CN201138519 " digital treating meter that is used for rotation touch investigating " is a kind of ground readout instrument that is applied to not have the cable rotation touch investigating, it is by housing, control panel, LCDs, control circuit board and battery supply are formed, its control panel is provided with menu and selects acknowledgement key, subprogram is selected and the acknowledgement key group, the status indicator lamp group, housing is provided with gang socket and multi-functional cable and USB standard socket, multi-functional cable respectively with the degree of depth of rotation touch investigating system equipment, the speed probe output cable, upper PC exchanges data cable, the charger output cable is connected with the underground data harvester, control circuit board is provided with single-chip microcomputer, is connected to the reception data storage of single-chip microcomputer corresponding port, the LCDs interface circuit, keyboard control circuit, usb circuit, RS485 communication interface circuit, rotating speed, depth transducer input control circuit and clock circuit.
The utility model of notification number CN201107634 " the underground data memory of rotation touch investigating system " comprises that barrel-type casing, field joint, circuit board and battery power and switch, circuit board setting are the computer of core with the master cpu.Battery power is provided with the power management mechanism that is made up of master cpu, relay drive circuit, this mechanism can realize that the underground data memory detects on ground, parameter is set and the process of exchanges data in the main external power that uses ground, can also charge to battery power simultaneously.When this underground data storage was about to drop into the feeler inspection operation, the instruction that master cpu receives ground data equipment started interior external power changeover program, and the relay of master cpu control is finished power supply and switched.In the prior art, described underground data memory combines with feeler lever and rotation touch investigating head and constitutes underground data test storage bar, be that the underground data memory is fixed in the feeler lever, feeler lever bottom and rotation touch investigating head of the prior art join, and the signal of telecommunication of rotation touch investigating head output is gathered amplification, A/D conversion by the underground data memory and stored.
Above notification number is that the utility model of CN201138519 and CN201107634 is the major technique condition that constitutes no cable feeler inspection.
Summary of the invention
The present invention has the technical problem that the static sounding method of testing can only be applicable to the shallow-layer geological test now in order to solve, and the deep layer static sounding method of testing of disclosed a kind of geotechnical engineering.
Deep layer static sounding method of testing of the present invention is made up of following steps:
1. smooth place, the rotation touch investigating car arrives exploratory point, and the feeler inspection vehicle hydraulic system is opened in the feeler lever centring ring mating holes position of rotation touch investigating car, carries out the leveling of feeler inspection car supporting leg;
2. descend earth anchor or give feeler inspection car counterweight;
3. dug mud sump, injected water or mud, water pipe connects water inlet, water outlet, the drain water circuit of slush pump, and the delivery port of slush pump links to each other with the swiveling faucet of rotation touch investigating car;
4. before the feeler inspection operation, the underground data memory that will not have cable static sounding rod member on ground is connected in readout instrument on the ground through its communication interface, readout instrument enters on-the-spot test option program on the ground, On-Site Test Procedure mainly detects underground data memory and battery power state, the option program comprises input hole number, sampling interval, selection probe type, and makes the underground data memory of no cable static sounding rod member synchronous with ground readout instrument clock; Disconnection ground, on-the-spot test option program execution back readout instrument is connected with no cable static sounding rod member, and the ground readout instrument is joined with the depth-registering device of popping one's head in;
5. pass through the feeler lever fairlead of rotation touch investigating car at no cable static sounding rod member adjunction feeler lever, the beginning feeler inspection, sounding machine will not have cable static sounding rod member and will be pressed in the stratum by certain speed, side by side go up the static sounding head depth of penetration of readout instrument record through the output of probe depth-registering device; In the process of probe injection, open slush pump, water or mud inject gap between no cable static sounding rod member and the stratum through the feeler lever inner chamber from the reamer weep hole, and return ground through this gap;
6. feeler inspection stops the injection of water or mud behind certain depth, with a water blocking with the inner chamber shutoff of feeler lever upper end;
7. the feeler lever fairlead with the rotation touch investigating car is changed to the sleeve pipe fairlead and inserts sleeve pipe, first sleeve pipe lower end bead has cutting teeth, casing pipe sleeve is loaded on the feeler lever outside on feeler inspection stratum, the unit head of rotation touch investigating car drives the sleeve pipe that connects successively and is rotated down injection, open slush pump in the time of sleeve pipe rotation injection, flow out from first sleeve pipe lower end in water or the mud gap between sleeve pipe and feeler lever, and ground is returned in water or the mud gap between sleeve pipe and stratum;
8. end distance does not have the rotation injection operation that stops sleeve pipe when cable static sounding rod member bottom is no less than 1 meter under first sleeve pipe of rotation injection, clamps sleeve pipe with sleeve clamp, and ground unnecessary sleeve pipe is laid down;
9. the sleeve pipe fairlead is changed to the feeler lever fairlead, the static sounding operation that the water blocking of dismounting feeler lever upper end and adjunction feeler lever are proceeded water filling or mud;
10. as needing setting of casing again, then dismantle sleeve clamp, repeat above 6～9 steps;
11. feeler inspection after projected depth, stops feedwater or mud implant operation, and the feeler lever fairlead is pulled down, the adjunction sleeve pipe is pulled down sleeve clamp, under hydraulic chucks cooperates, sleeve pipe is risen by root pull out earlier;
12. sleeve pipe rise pull out finish after, carry first-class utensil by feeler lever and cooperate down feeler lever to be risen by root and pull out, work no cable static sounding rod member after pulling out and clean and oil;
13. will not having cable static sounding rod member with communication cable is connected with the ground readout instrument, the test data of no cable static sounding rod member storage is transferred to this ground readout instrument, browse test data and test curve, readout instrument logs off on the ground, and the test data of readout instrument unloading is uploaded in host computer and carried out Data Post on the ground;
14. wash slush pump with clear water, pull down inlet and outlet pipe then;
15. rise and pull out rotation touch investigating car earth anchor, fall oil cylinder, pack up supporting leg, close the feeler inspection vehicle hydraulic system.
The cutting teeth of described first sleeve pipe lower end bead is the rib coring bit.
Beneficial effect of the present invention and advantage are: the present invention is on the basis of existing no cable static sounding method of testing; utilize the characteristic of rotation touch investigating car rotation injection unit head that the sleeve pipe with protective effect is provided for the static sounding feeler lever; this sleeve pipe also has the cutting teeth (rib drill bit) of the precession of being beneficial to for rotation injection mode and casing shoe; the rotation injection of sleeve pipe also makes full use of the rotation touch investigating car mud with lubrication is provided; therefore the tubing depth of this method rotation injection obviously helps preventing the stressed bending of feeler lever and fractures greater than the tubing depth of static pressure injection, thereby has improved the static(al) depth of penetration of no cable static sounding rod member.Facts have proved that this method can realize the deep layer static sounding, reach 70 meters in the maximum test of the Efficiency in Buildings in Tianjin Area degree of depth.The outstanding advantage that the present invention has is simple to operate, can obviously improve the static sounding degree of depth.
Description of drawings
Accompanying drawing 2 is ground readout instrument example structure schematic diagrames.
Accompanying drawing 3 is ground readout instrument embodiment electricity theory structure block diagrams.
Accompanying drawing 4 is no cable static sounding member structure schematic diagrames.
Accompanying drawing 5 is underground data memory construction schematic diagrames.
Accompanying drawing 6 is multi-functional cable structural representations.
Accompanying drawing 7 is underground data memory electricity theory structure block diagrams.
Accompanying drawing 8 is first sleeve structure schematic diagram.
Accompanying drawing 9 is this method FB(flow block)s.
Number in the figure: 1 feeler inspection car car body, 2 main shafts, 3 hydraulic jacks arranged side by side, 4 main shaft oil motors, 5 rotation water pipe heads, 6 main spindle boxes, 7 consoles, 8 vehicle-mounted slush pumps, 9 hydraulic legs, 10 earth anchors, 11 fairleads, 12 ground readout instruments, 13USB standard socket, 14 power switches, 15 multi-functional cables, 16 sensor relaying boxes, 17 communications or charging relaying box, 18 probing rod joints, 19 reamers, 19-1 crosses at the center water sidewalk for visually impaired people, 19-2 weep hole, 20 transition joints, 21 storage-pole, 22 underground data memories, 22-1 side cover, the 22-2 seat ring, 22-3 end cap, 22-4 field joint, the 22-5 holding wire, 23 probes, 24 relaying boxes, the 24-1 cable, the shared communication cable of 24-2,24-3 feed cable, 24-4 charger input cable, 25 first sleeve pipes, 26 rib coring bits.
The specific embodiment
Below in conjunction with accompanying drawing the related capital equipment of this deep layer static sounding method of testing is described at first.
As shown in Figure 1, the main shaft 2 of feeler inspection car car body 1 is by the bearings of main spindle box 6, the main shaft 2 that main shaft oil motor 4 is connected in through the gearbox drive of reduction gearing train, main spindle box 6 is fixedly connected on two hydraulic jack 3 cylinder bodies arranged side by side through gripper shoe, makes main spindle box 8 with two hydraulic jack synchronization liftings arranged side by side and transmit injection pressure.Main shaft 2 is provided with the main shaft water channel that connects the axle center, and the main shaft upper end is provided with the swiveling faucet 5 that is connected mutually with the main shaft water channel, and the import of swiveling faucet is connected in vehicle-mounted slush pump 8 outlets, and the manually-operated gate of swiveling faucet is used to control flow of inlet water.The main shaft lower end is fixed with feeler lever and the pneumatic dismounting cutting ferrule of sleeve pipe, feeler lever in this dismounting cutting ferrule or sleeve pipe are finished the unclamping of feeler lever or sleeve pipe, are tightened, static(al) injection, rotation injection and rise and pull out operation respectively under the rotation of two hydraulic jack liftings arranged side by side, main shaft oil motor drives.
Fairlead 11 is corresponding with main shaft, and fairlead is the feeler lever fairlead or the sleeve pipe fairlead that can change the outfit, and half chuck of this fairlead is a hydraulic chuck.
Feeler inspection car car body undersurface of bottom disc is symmetrically distributed with quadruplet hydraulic leg 9 and is arranged at the earth anchor 10 at both ends, chassis.The motor of feeler inspection car drives oil pump and air pump.
Two hydraulic jacks arranged side by side of present embodiment are when the oil pump output pressure is 16.0MPa, lifting force is 492kN, penetrating power is 289kN, hoisting velocity: Vbm=0-2.27m/min at a slow speed, quick Vbk=5.50-7.07m/min, injection speed: the worker advances Vtg max=0-3.87m/min, fast Vtk max=3.87-4.98m/min.Main shaft oil motor discharge capacity is 39ml/r, the M=5 of gear-box driving gear, Z=16; The M=5 of driven gear, Z=38, speed of mainshaft n=0-29r/min, main-shaft torque N=0-1600Nm.Slush pump oil motor discharge capacity is 16mL/r, and pump stroke is 100mm.Oil pressure clamp power Nj=90kN.Air-actuated jaw clamping force Nj=3.9kN.
As shown in Figure 2, on the ground the control panel setup menu of readout instrument 12 is selected acknowledgement key " P ", the subprogram that is made of key " K1 ", " K2 ", " K3 ", " K4 " is selected and acknowledgement key group and be respectively the status indicator lamp group of green, blue, white, Red LED1 " D1 ", " D2 ", " D3 ", " D4 " formation.The top of control panel is the LCDs of 240*128 dot matrix image, Chinese character 15 row 8 row.The housing right side is provided with socket and the USB standard socket 13 that connects multi-functional cable 15, and the housing left side is provided with the power switch 14 of battery supply.
Multi-functional cable makes on the ground through sensor relaying box 16 that depth transducer, the speed probe output cable of readout instrument 12 and rotation touch investigating system equipment join, when being used for feeler inspection to the field observation of the degree of depth, rotating speed.Sensor relaying box 16 is provided with connection or cuts off the K switch N1 of each sensor and the inching button K switch N2 of manual analog depth sensor pulse output.
Communication or charging relaying box 17 are provided with the bidirectional transducer of RS485-RS232, and RS232 is for adapting to upper PC, and RS485 is used for the transfer of data of underground data harvester.Multi-functional cable is via the respective socket realization ground readout instrument 12 of communication or charging relaying box 17 and being connected of upper PC or underground data harvester.Multi-functional cable also via the respective socket of communication or charging relaying box 17 by of the battery supply charging of external charge device to ground readout instrument 12, the battery supply of readout instrument 12 provides working power to the underground data harvester that is in ground and depth transducer, speed probe respectively in different phase on the ground.
As shown in Figure 3, the system supervisor of the single-chip microcomputer installation in the readout instrument 12 of ground has on-site land survey program, data readback program, transducer calibration program, file previewer, system's setting program.Wherein on-site land survey program is mainly finished MTD record, surveillance operation conditions.The data readback program is mainly finished controls such as data acquisition, storage, transmission, printing.The transducer calibration program is mainly finished sensor inspection, initial value setting and affirmation, clock setting, makes no cable static sounding rod member synchronous with ground readout instrument clock.The file previewer is mainly finished the selection control of browsing the feeler inspection curve from the present embodiment interface, operations such as the moving of file, copy, deletion, rename.System's setting program is finished engineering name, hole number, the depth coefficient of mark test file and is measured the date, and curve generates, show and select and longitudinal and transverse grid scale is set.
" P " selects and acknowledgement key for system program in the keyboard special, and " K1 ", " K2 ", " K3 ", " K4 " are respectively the subprogram of " P " key hit program and select and acknowledgement key.Status indicator lamp respectively the video data acquisition state, enter controlled plant running status etc. after certain program, wherein lamp D1 is a power supply indicator, lamp D2 is a degree of depth reception of impulse indicator lamp, D2 is once glittering for a degree of depth reception of impulse of every reception indicator lamp, and lamp D3 and D4 are the data transmission procedure and the indicator lamp that finishes.
No cable static sounding rod member embodiment as shown in Figure 4, it is by probing rod joint 18, reamer 19, transition joint 20, storage-pole 21 and pop one's head in and 23 connect and compose successively, and wherein reamer 19 is provided with the center and crosses water sidewalk for visually impaired people 19-1 and weep hole 19-2.
As shown in Figure 5, the tubular body of underground data memory 22 is provided with side cover 22-1, the seat ring 22-2 of tubular body upper end is provided with the end cap 22-3 of sealing tubular body, the tubular body lower end is provided with hollow field joint 22-4, and the holding wire 22-5 of probe 23 each sensor introduces this underground memory from hollow field joint.
As shown in Figure 6, be provided with the cable of relaying box 24 in the middle of the underground data memory configuration of Fig. 5, diagram relaying box right side is the common cable 24-1 that connects blanket socket, and the left side is the communication cable 24-2 that connects data processing equipment, the feed cable 24-3 that connects 12V and 5V external power and charger input cable 24-4.
As shown in Figure 7, the underground data memory is provided with the computer of being made up of master cpu, FIASH E2ROM holder, multi-channel A/D circuit, clock circuit and RS-232 communication interface, and the K switch rear end of the promptly interior power supply of the 12V battery power in the tubular body is connected in master cpu power input and 5VDC-DC DC converter input.One control output end of master cpu is through photoelectric isolating circuit control relay drive circuit J, and the status indicator lamp of this underground data storage is controlled in a control output end through photoelectric isolating circuit.The switch rear end of interior power supply is connected in the constant open contact of one group of control of relay contact J-1, and its constant close contact is connected in the 12V external power, and stationary contact is connected in 3.3VDC-DC DC converter input, and its output is drawn the sensor that is connected to probe.5VDC-DC DC converter output is connected in the constant open contact of another group control of relay contact J-2, and its constant close contact is connected in the 5V external power, and stationary contact is connected in the power input of each circuit of this holder.RS-485 communication interface, 12V and 5V external power are connected in blanket socket among the figure, and the charger connector of this socket is connected in interior power supply.
As shown in Figure 8, first sleeve pipe 25 lower end bead has cutting teeth, and cutting teeth is a rib coring bit 26.
Below in conjunction with Fig. 9 this deep hole static sounding method of testing is described.
At first smooth place, rotation touch investigating car arrive exploratory point, and the feeler inspection vehicle hydraulic system is opened in the feeler lever centring ring mating holes position of rotation touch investigating car, carries out the leveling of feeler inspection car hydraulic leg, earth anchor or give feeler inspection car counterweight under the hydraulic pressure.
Dug mud sump, injected water or mud, water pipe connects water inlet, water outlet, the drain water circuit of vehicle-mounted slush pump slush pump, and the delivery port of vehicle-mounted slush pump links to each other with the swiveling faucet of rotation touch investigating car, make draw water, feedwater, backwater be unimpeded.
Before the feeler inspection operation, the underground data memory that will not have cable static sounding rod member on ground is connected in readout instrument on the ground through its communication interface, readout instrument enters on-the-spot test option program on the ground, comprise: detect underground data memory and battery power state, measurement parameter district calibrating procedure-engineering name, hole number, depth coefficient and measure the date; Demarcate no cable static sounding rod member, comprise that input hole number, sampling interval (have 1cm, 2cm, 5cm, 10cm ...), select probe type doube bridge (single bridge, doube bridge, three bridges to be arranged, reserve four bridges) etc. content, and the underground data memory that makes no cable static sounding rod member is with the readout instrument clock is synchronous on the ground; Inspection and disconnection ground, demarcation back readout instrument are connected with no cable static sounding rod member, and the ground readout instrument and the depth-registering device of popping one's head in are joined.
Feeler lever fairlead by the rotation touch investigating car is at the upper end adjunction feeler lever of no cable static sounding rod member, the beginning feeler inspection, sounding machine will not have cable static sounding rod member and will be pressed in the stratum by certain speed, side by side go up the static sounding head depth of penetration of readout instrument record through the output of probe depth-registering device; In the process of probe injection, open slush pump, water or mud are through the gap of feeler lever inner chamber between reamer weep hole no cable static sounding rod member of injection and stratum, and mud returns ground through this gap.
Feeler inspection stops water filling or mud behind certain depth, with a water blocking shutoff of water inner chamber is crossed in the feeler lever upper end.
The feeler lever fairlead of rotation touch investigating car is changed to the sleeve pipe fairlead and inserts first sleeve pipe that the lower end bead has cutting teeth, first casing pipe sleeve is loaded on the feeler lever on feeler inspection stratum, the unit head of rotation touch investigating car drives the sleeve pipe that connects successively and is rotated down injection, open slush pump in the time of sleeve pipe rotation injection, flow out from first sleeve pipe lower end in the gap of mud between sleeve pipe and feeler lever, and ground is returned in the gap of mud between sleeve pipe and stratum.
End distance does not have the rotation injection operation that stops sleeve pipe when cable static sounding rod member bottom is 1 meter under first sleeve pipe of rotation injection, clamps sleeve pipe with sleeve clamp, and ground unnecessary sleeve pipe is laid down.
The sleeve pipe fairlead is changed to the feeler lever fairlead, and the water blocking of dismounting feeler lever upper end, adjunction feeler lever are proceeded water filling or the operation of mud static sounding.
As the not enough projected depth of the feeler inspection degree of depth, need setting of casing once more, then dismantle sleeve clamp, repeat above corresponding steps.
Feeler inspection stops feedwater or mud implant operation after projected depth, the feeler lever fairlead is pulled down, and the adjunction sleeve pipe is pulled down sleeve clamp, under hydraulic chucks cooperates, sleeve pipe is risen by root pull out earlier.
Sleeve pipe rise pull out finish after, carry first-class utensil at feeler lever and feeler lever risen by root under cooperating and pull out, work no cable static sounding rod member after pulling out and clean and oil.
To not have cable static sounding rod member with communication cable is connected with the ground readout instrument, the test data of no cable static sounding rod member is transferred to this ground readout instrument, browse test data and test curve, readout instrument logs off on the ground, and the test data of readout instrument unloading is uploaded in host computer and carried out Data Post on the ground.
Wash slush pump with clear water, pull down inlet and outlet pipe then.
Rise and pull out rotation touch investigating car earth anchor, fall oil cylinder, pack up supporting leg, close the feeler inspection vehicle hydraulic system.
Claims (2)
1. the deep layer static sounding method of testing of a geotechnical engineering is characterized in that being made up of following steps:
1) smooth place, the rotation touch investigating car arrives exploratory point, and the feeler inspection vehicle hydraulic system is opened in the feeler lever centring ring mating holes position of rotation touch investigating car, carries out the leveling of feeler inspection car supporting leg;
2) following earth anchor or give feeler inspection car counterweight;
3) dug mud sump, injected water or mud, water pipe connects water inlet, water outlet, the drain water circuit of slush pump, and the delivery port of slush pump links to each other with the swiveling faucet of rotation touch investigating car;
4) before the feeler inspection operation, the underground data memory that will not have cable static sounding rod member on ground is connected in readout instrument on the ground through its communication interface, readout instrument enters on-the-spot test option program on the ground, On-Site Test Procedure mainly detects underground data memory and battery power state, the option program comprises input hole number, sampling interval, selection probe type, and makes the underground data memory of no cable static sounding rod member synchronous with ground readout instrument clock; Disconnection ground, on-the-spot test option program execution back readout instrument is connected with no cable static sounding rod member, and the ground readout instrument is joined with the depth-registering device of popping one's head in;
5) pass through the feeler lever fairlead of rotation touch investigating car at no cable static sounding rod member adjunction feeler lever, the beginning feeler inspection, sounding machine will not have cable static sounding rod member and will be pressed in the stratum by certain speed, side by side go up the static sounding head depth of penetration of readout instrument record through the output of probe depth-registering device; In the process of probe injection, open slush pump, water or mud inject gap between no cable static sounding rod member and the stratum through the feeler lever inner chamber from the reamer weep hole, and return ground through this gap;
6) feeler inspection stops the injection of water or mud behind certain depth, with a water blocking with the inner chamber shutoff of feeler lever upper end;
7) the feeler lever fairlead with the rotation touch investigating car is changed to the sleeve pipe fairlead and inserts sleeve pipe, first sleeve pipe lower end bead has cutting teeth, casing pipe sleeve is loaded on the feeler lever on feeler inspection stratum, the unit head of rotation touch investigating car drives the sleeve pipe that connects successively and is rotated down injection, open slush pump in the time of sleeve pipe rotation injection, flow out from first sleeve pipe lower end in water or the mud gap between sleeve pipe and feeler lever, and ground is returned in the gap of mud between sleeve pipe and stratum;
8) end distance does not have the rotation injection operation that stops sleeve pipe when cable static sounding rod member bottom is not less than 1 meter under first sleeve pipe of rotation injection, clamps sleeve pipe with sleeve clamp, and ground unnecessary sleeve pipe is laid down;
9) the sleeve pipe fairlead is changed to the feeler lever fairlead, the static sounding operation that the water blocking of dismounting feeler lever upper end and adjunction feeler lever are proceeded water filling or mud;
10) as need setting of casing again, then dismantle sleeve clamp, repeat above 6～9 steps;
11) feeler inspection stops feedwater or mud implant operation after projected depth, and the feeler lever fairlead is pulled down, and the adjunction sleeve pipe is pulled down sleeve clamp, under hydraulic chucks cooperates, sleeve pipe is risen by root pull out earlier;
12) sleeve pipe rise pull out finish after, carry first-class utensil by feeler lever and cooperate down feeler lever to be risen by root and pull out, work no cable static sounding rod member after pulling out and clean and oil;
13) will not having cable static sounding rod member with communication cable is connected with the ground readout instrument, the test data of no cable static sounding rod member storage is transferred to this ground readout instrument, browse test data and test curve, readout instrument logs off on the ground, and the test data of readout instrument unloading is uploaded in host computer and carried out Data Post on the ground;
14) wash slush pump with clear water, pull down inlet and outlet pipe then;
15) rise and pull out rotation touch investigating car earth anchor, fall oil cylinder, pack up supporting leg, close the feeler inspection vehicle hydraulic system.
2. the deep layer static sounding method of testing of geotechnical engineering according to claim 1, it is characterized in that: the cutting teeth of described first sleeve pipe lower end bead is the rib coring bit.
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| CN200910070579.8A CN102031771B (en) | 2009-09-25 | 2009-09-25 | Deep static cone penetration test method for geotechnical engineering |
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| CN102345284A (en) * | 2011-06-09 | 2012-02-08 | 上海市城市建设设计研究院 | Static penetration test zero return detection method and system |
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