CN102183230A

CN102183230A - An anchoring device of a datum mark in a boring

Info

Publication number: CN102183230A
Application number: CN 201010608508
Authority: CN
Inventors: 姚爱军; 杜修力; 赵强
Original assignee: Beijing University of Technology
Current assignee: Beijing University of Technology
Priority date: 2010-12-27
Filing date: 2010-12-27
Publication date: 2011-09-14
Anticipated expiration: 2030-12-27
Also published as: CN102183230B

Abstract

The invention discloses an anchoring device of a datum mark in a boring. The anchoring device of a datum mark in a boring, which belongs to the testing technical field of geotechnical engineering, is used for detection of displacement or deformation of rock-soil body such as ground pit, side slope and the like. The anchoring device includes a guiding ball 1, a chute 2, a PVC (Polyvinyl chloride) sleeve 3, a support arm 4, an inner tube 5, a separation blade 6, a pin 7, a traction steel wire 8, and a screw 9. The anchoring device has advantages of convenient installation, good stability in anchoring datum marks, easy acquisition of manufacture material, and low cost.

Description

Reference point anchor in a kind of boring

Technical field

The invention discloses reference point anchor in a kind of boring, belong to the Geotechnical Engineering technical field of measurement and test, be used for the displacement or the deformation monitoring of rock soil mass such as foundation ditch or side slope.

Background technology

In the Geotechnical Engineering measuring technology, the displacement of engineerings such as foundation ditch, side slope or deformation monitoring are common engineering projects.At present, technology commonly used is the tiltmeter test, is reference point with the earth formation deep point, calculates the distortion situation at each position of deviational survey pipe.Perhaps, adopting total powerstation to carry out ground deformation and measure, is reference point with certain point away from engineering rock mass, carries out long-term observation.Wherein, the reference point setting of tiltmeter is comparatively complicated, needs sometimes to pour into a mould with pile body; Being provided with of ground deformation datum marks such as total powerstation is simple, but only can satisfy the surface displacement or the deformation monitoring of rock soil mass

Summary of the invention

Reference point anchor in this technology is promptly holed is mainly used in foundation ditch or slope ground displacement body or deformation monitoring, and this anchor has made up the reference point of draw-wire displacement sensor in the stratum, to ensure the accuracy of displacement or deformation measurement data.Carry out the position of displacement or deformation monitoring at needs, adopt Luoyang Spade to form the boring of certain depth, prefabricated anchor is sent into the hole at the bottom of, the stretch-draw grouting behind shaft or drift lining can form the reference point that is fixed well.

The present invention adopts following technical scheme:

Reference point anchor in a kind of boring, comprise SDeflector 1, chute 2, PVC sleeve pipe 3; Support arm 4, interior pipe 5, catch 6, pin 7, traction steel wire 8, screw 9 is characterized in that: SDeflector 1 is connected with interior pipe 5, and outside the pipe 5, on the pipe 5, the other end was fixed on the PVC sleeve pipe 3 by the circle hoop in support arm 4 one ends were fixed in by the circle hoop in PVC sleeve pipe 3 was placed in.Interior pipe 5 has chute 2 near ends of SDeflectors, and PVC sleeve pipe 3 can slide at interior pipe chute 2 places.Catch 6 is positioned on the PVC sleeve pipe 3, catch 6 upper edge PVC sleeve pipes 3 axially grooved, and two screws 9 radially are fixed on it on PVC sleeve pipe, and are longitudinally-slidable, and catch 6 has traction steel wire 8 away from SDeflector 1 one ends system.Traction steel wire 8 passes by chute 2, pipe 5 in entering, and draw hell and be used for tractive.Pin 7 is positioned at 6 times close SDeflector 1 sides of catch, in the hole that insertion PVC sleeve pipe 3 and interior pipe 5 overlap PVC sleeve pipe 3 is fixed on the interior pipe 5, and the pin heelpiece has spring.

The using method of reference point anchor is as follows in a kind of the boring: after excavation is portalled, at the bottom of this device sent into the hole, the tension traction steel wire, catch endwisely slips along the PVC sleeve pipe, pin ejects, along sliding away from the guiding pommel, traction drives support arm and struts the PVC sleeve pipe along interior pipe, can strengthen the stable of reference point.Traction steel wire in being located in the pipe is fixed on the catch of anchor, under the protection of interior pipe, is connected with the rock soil mass surface probe, plays the effect of slotted line bar.

Compare with existing reference point anchor, the present invention can obtain following beneficial effect:

(1) device simple installation, the reference point steadiness is better;

(2) construction material obtains easily, and is with low cost.

Description of drawings

Fig. 1 forms synoptic diagram for reference point anchor in the boring;

Fig. 2 installs for reference point anchor in the boring and uses synoptic diagram;

Fig. 3 is reference point anchor support arm collapsed state structural drawing in the boring;

Fig. 4 is reference point anchor support arm softened state structural drawing in the boring;

Fig. 5 is reference point anchor sectional view in the boring;

Among the figure: 1, SDeflector, 2, chute, 3, the PVC sleeve pipe, 4, support arm, 5, interior pipe, 6, catch, 7, pin, 8, traction steel wire, 9, screw.

Embodiment

Be illustrated in figure 1 as in the boring reference point anchor and form synoptic diagram, comprise SDeflector 1, chute 2, PVC sleeve pipe 3; Support arm 4, interior pipe 5, catch 6, pin 7, traction steel wire 8, screw 9 is characterized in that: SDeflector 1 is connected with interior pipe 5, and outside the pipe 5, on the pipe 5, the other end was fixed on the PVC sleeve pipe 3 by the circle hoop in support arm 4 one ends were fixed in by the circle hoop in PVC sleeve pipe 3 was placed in.Interior pipe 5 has chute 2 near ends of SDeflectors, and PVC sleeve pipe 3 can slide at interior pipe chute 2 places.As shown in Figure 5, catch 6 is positioned on the PVC sleeve pipe 3, catch 6 upper edge PVC sleeve pipes 3 axially grooved, and two screws 9 radially are fixed on it on PVC sleeve pipe, and are longitudinally-slidable, and catch 6 has traction steel wire 8 away from SDeflector 1 one ends system.Traction steel wire 8 passes by chute 2, pipe 5 in entering, and draw hell and be used for tractive.Pin 7 is positioned at 6 times close SDeflector 1 sides of catch, in the hole that insertion PVC sleeve pipe 3 and interior pipe overlap PVC sleeve pipe 3 is fixed on the interior pipe 5, and the pin heelpiece has spring.

As shown in Figure 2, for reference point anchor in the hole of certain building foundation pit hole wall displacement monitoring engineering application example is installed.

Main implementation step is:

(1) adopt Luoyang Spade, nearly level (general about 10 °) is drawn and is dug boring, bore diameter 140mm, hole depth 15m.

(2) surface dust in the cleaning boring is standby.

(3) at ground assembling anchor, will penetrate traction steel wire in the pipe in the PVC, segmentation and anchor connect, and successively anchor are sent in the hole.

(4) after anchor is delivered at the bottom of the hole, the tension traction steel wire, pin ejects, and the PVC sleeve pipe is in free movement state, and strutted by traction drive support arm, and support arm is stuck on the hole wall.

(5) configuration cement grout, and at hole-bottom slurry-injection, the about 2m of slip casting segment length.

(6) maintenance is after 24 hours, and setting completed on schedule for the hole base.

Be illustrated in figure 3 as reference point anchor support arm collapsed state structural drawing in the boring of completing steps (3) back; Figure 4 shows that reference point anchor support arm softened state structural drawing in the boring of completing steps (4) back.

Claims

1. reference point anchor in the boring, comprise SDeflector (1), chute (2), PVC sleeve pipe (3), support arm (4), interior pipe (5), catch (6), pin (7), traction steel wire (8), screw (9), it is characterized in that: SDeflector (1) is connected with interior pipe (5), PVC sleeve pipe (3) is placed in outside the interior pipe (5), support arm (4) one ends are fixed on the interior pipe (5) by the circle hoop, and the other end is fixed on the PVC sleeve pipe (3) by the circle hoop; Interior pipe (5) has chute (2) near an end of SDeflector, and PVC sleeve pipe (3) can be located to slide at interior pipe chute (2); Catch (6) is positioned on the PVC sleeve pipe (3), catch (6) upper edge PVC sleeve pipe (3) axially grooved, and two screws (9) radially are fixed on it on PVC sleeve pipe, and are longitudinally-slidable, and catch (6) has traction steel wire (8) away from SDeflector (1) one end system; Traction steel wire 8 passes by chute (2), enters interior pipe (5), and draws hell and be used for tractive; Pin (7) is positioned at close SDeflector (1) side under the catch (6), in the hole that insertion PVC sleeve pipe (3) and interior pipe (5) overlap PVC sleeve pipe (3) is fixed on the interior pipe (5), and pin (7) heelpiece has spring.