The method and apparatus of the quiet spy pillar of deep hole cone penetration test is set at the soil layer superficial part
Technical field
The present invention relates to the deep hole cone penetration test, particularly relate to a kind of method and apparatus that the quiet spy pillar of deep hole cone penetration test is set at the soil layer superficial part.
Background technology
Cone penetration test is that the taper shape probe with certain specification at the uniform velocity is pressed in the soil by machinery, to measure the isoparametric a kind of home position testing method of probe resistance.
In deep hole cone penetration test penetration process, tend to take place feeler lever deflection even disconnected bar phenomenon.This mainly is owing to along with depth of penetration increases probe deflection takes place easily; If press down and meet pan soil in the process, then penetration resistance increases, and feeler lever bends, and finally causes disconnected bar.At cone penetration test hole superficial part quiet spy pillar being set, is one of main method that solves by feeler lever deflection and disconnected bar, promptly sends into quiet spy pillar in superficial part certain depth scope, and pillar plays guide effect on the one hand, prevents deflection; Limit the degree of crook of feeler lever in the pillar on the other hand, prevent the feeler lever fracture, thereby play protective effect feeler lever.
The quiet spy pillar of Set For Current is to finish by drilling equipment, like this, in implementation process, needs the construction of marching into the arena of another set of drilling equipment.Concrete implementation step: carry out upper soil horizon with quiet spy machine earlier and test, generally to the 30m, then quiet spy machine is withdrawn from, with rig the proof soil layer in top is removed, transferred pillar, rig is withdrawn from then, again quiet spy machine is put back to original position, carry out the test of following soil layer.This method need be marched into the arena by two complete equipments, and will be used alternatingly, time-consuming like this effort again, inefficiency.
As seen how the quiet spy pillar of superficial part being sent in the soil layer quickly and efficiently is the key of dealing with problems.
Summary of the invention
Technical problem to be solved by this invention is exactly to provide a kind of for the defective that overcomes above-mentioned prior art existence at the soil layer superficial part method and apparatus of the quiet spy pillar of deep hole cone penetration test to be set, thereby raises the efficiency, saves cost.
Purpose of the present invention can be achieved through the following technical solutions: at the soil layer superficial part method of the quiet spy pillar of deep hole cone penetration test is set, may further comprise the steps:
1) in the vertical shaft bottom of static sounding machine slips is set;
2) quiet spy pillar is passed slips;
3) vertical shaft of lifting static sounding machine;
4) with slips quiet spy pillar is blocked;
5) press down the vertical shaft of static sounding machine.
Among other embodiment of the present invention, can also may further comprise the steps:
6) slips unclamps quiet spy pillar;
7) vertical shaft of lifting static sounding machine;
8) with slips quiet spy pillar is blocked;
9) press down the vertical shaft of static sounding machine;
10) repeating step 6)~step 9), so that quiet spy pillar is pressed in the soil layer of desired depth.
Described static sounding machine adopts fluid pressure type static sounding machine.
Described static sounding machine promotes and presses down vertical shaft by its hydraulic power mechanism.
The present invention also provides a kind of equipment that the quiet spy pillar of deep hole cone penetration test is set at the soil layer superficial part, it is characterized in that, comprise static sounding machine and the slips that is used to block quiet spy pillar, described static sounding facility have an actuating unit that is used for to soil layer injection probe, described actuating unit has the vertical shaft that transmission is used, and described slips is located at the bottom of vertical shaft.
Described static sounding machine adopts fluid pressure type static sounding machine or mechanical type static sounding machine.
Compared with prior art, the present invention utilizes the hydraulic power of static sounding machine, quiet spy pillar is pressed in the soil layer, no longer utilize rig to carry out the pillar setting, can transport a set of equipment less to the job site, also no longer need being used alternatingly of two complete equipments, improved efficiency of construction greatly, saved cost.
Description of drawings
Fig. 1 is the schematic diagram of one embodiment of the present of invention.
Wherein: the quiet spy pillar of 1-, 2-oil cylinder, 3-slips, 4-vertical shaft, 5-oil circuit, 6-crossbeam, 7-grade beam.
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing.
Of the present inventionly method one specific embodiment of the quiet spy pillar of deep hole cone penetration test is set, may further comprise the steps at the soil layer superficial part:
1) in the vertical shaft bottom of static sounding machine slips is set;
2) quiet spy pillar is passed slips;
3) vertical shaft of lifting static sounding machine;
4) with slips quiet spy pillar is blocked;
5) press down the vertical shaft of static sounding machine.
When quiet spy pillar was failed to be pressed in the soil layer of desired depth, the present invention can also may further comprise the steps:
6) slips unclamps quiet spy pillar;
7) vertical shaft of lifting static sounding machine;
8) with slips quiet spy pillar is blocked;
9) press down the vertical shaft of static sounding machine;
10) repeating step 6)~step 9), so that quiet spy pillar is pressed in the soil layer of desired depth.
The present invention also provides a kind of equipment that the quiet spy pillar of deep hole cone penetration test is set at the soil layer superficial part, comprise static sounding machine and the slips that is used to block quiet spy pillar, described static sounding facility have an actuating unit that is used for to soil layer injection probe, described actuating unit has the vertical shaft that transmission is used, and described slips is located at the bottom of vertical shaft.
Described static sounding machine adopts fluid pressure type static sounding machine or mechanical type static sounding machine.
Preferably, present embodiment adopts fluid pressure type static sounding machine, promotes and presses down vertical shaft by its hydraulic power mechanism, and as shown in Figure 1, the detailed process of present embodiment is as follows:
Vertical shaft 4 bottoms at fluid pressure type static sounding machine are provided with slips 3; Quiet spy pillar 1 is passed the crossbeam 6 and the grade beam 7 of fluid pressure type static sounding machine.At this moment, the vertical shaft 4 by the lifting of the oil pressure in the fluid pressure type static sounding Oil cylinder 2 static sounding machine blocks quiet spy pillar 1 with slips 3 then; Press down the vertical shaft 4 of static sounding machine by the oil pressure in the fluid pressure type static sounding Oil cylinder 2, quiet spy pillar 1 is pressed in the soil layer.
If do not reach the predetermined degree of depth, can make slips unclamp quiet spy pillar, promote static sounding machine vertical shaft, press down vertical shaft once more after with slips quiet spy pillar being blocked to certain altitude, but like this repeated multiple times, in the soil layer that quiet spy pillar is pressed into desired depth till.