CN103205984A

CN103205984A - Seepage-proof water-stop cushion for inspection shaft

Info

Publication number: CN103205984A
Application number: CN2013101432489A
Authority: CN
Inventors: 詹春生
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-04-24
Filing date: 2013-04-24
Publication date: 2013-07-17
Anticipated expiration: 2033-04-24
Also published as: CN103205984B

Abstract

The invention discloses a seepage-proof water-stop cushion for an inspection shaft. The seepage-proof water-stop cushion comprises a cushion plate made of elastic flexible materials, wherein a round, fan-shaped or rectangular through hole is formed in the center of the cushion plate; the outer ring of the cushion plate has the same shape as the through hole; the size of the through hole is same as that of the cross section of the inner wall of the inspection shaft; and the size of the outer ring of the cushion plate is greater than that of the cross section of the outer wall of the inspection shaft. According to the technical scheme, the cushion plate is laid between the upper surface of a walling crib of the inspection shaft and the lower surface of a well lid base, the edge of the inner ring of the cushion plate is consistent with the inner ring of the inspection shaft wall, and the outer edge of the cushion plate is laid between a roadbase and a pavement, so that the elastic sealing function of the cushion plate can effectively prevent rainwater on the pavement from seeping along the crack and gap between the outer side of the inspection shaft wall and the pavement, a rammed earth layer around the inspection shaft is prevented from losing strength after long-term immersion by rainwater, the roadbase can maintain favorable consistency and bearing capacity all along, the smoothness of a road can be maintained, the inspection shaft can be protected, and the service life of the inspection shaft can be prolonged.

Description

Inspection shaft water seepage prevention pad

Technical field

The invention belongs to the civil engineering technical field, particularly a kind of inspection shaft water seepage prevention pad.

Background technology

At present, the material of the walling crib of inspection shaft and well lid base generally is to be precast concrete, metal or plastics on the urban road, itself and flexible pavement adhere to unlike material separately, has the different characteristics of expanding with heat and contract with cold, and adhere to different manufacturing procedures and period separately, can between well lid base or walling crib and surface course and basic unit, form slit or crack under the dynamic load effect of regular period.Meet the rainwater time, rainwater can be along oozing long term under above-mentioned slit or the crack, can influence the borehole wall consolidation on basis on every side, add the spreading that inspection shaft suffers vehicle for a long time, in the course of time, rammer soil layer around the inspection shaft just subsides easily, even has influence on the stability on inspection shaft basis.

Summary of the invention

The present invention provides a kind of rainwater that prevents along the inspection shaft that oozes under borehole wall water seepage prevention pad in order to solve weak point of the prior art.

For solving the problems of the technologies described above, the present invention adopts following technical scheme: inspection shaft water seepage prevention pad, comprise by playing the backing plate that flexible material is made, backing plate central authorities offer the through hole of circle, fan-shaped or rectangle, the outer ring of backing plate is identical with the shape of through hole, the shape size of through hole is identical with the shape size of inspection shaft cross section of inboard wall, and the shape size of backing plate outer ring is greater than the shape size of inspection shaft external wall cross-section.

Described backing plate is made up of the fanning strip of two identical sizes at least, and every fanning strip radially is respectively equipped with draw-in groove with card article with both sides simultaneously, and the section of card article and draw-in groove is suitable trapezium structure; Be embedded in the draw-in groove of another piece fanning strip by the card article on the fanning strip, all fanning strips are combined into the backing plate of annular.

Described every fanning strip surface is equipped with fin and/or groove, and fin and/or groove are the arcuate structure along the fanning strip circumferential direction.

Be provided with the pressure-bearing muscle in the described backing plate, the pressure-bearing muscle radially constitutes net structure with circumferential arrangement along fanning strip.

Adopt technique scheme, between inspection shaft walling crib upper surface and well lid base lower surface, lay backing plate, the inner ring edge of backing plate and inspection shaft borehole wall inner ring are consistent, the outward flange of backing plate is laid between roadbase and the surface course simultaneously, the elastic packing effect of backing plate can stop effectively that the rainwater on the road surface no longer oozes under between the crack between the inspection shaft borehole wall outside and surface course and slit, it is strong through the possible mistake of rainwater long period of soaking to avoid inspection shaft to ram soil layer on every side, makes basic unit remain good consolidation and supporting capacity.Can keep the smooth of road preferably like this, also protect inspection shaft and prolonged its application life.Because the shape of cross section of the inspection shaft borehole wall has circle, fan-shaped or rectangle, thus the shape of backing plate and through hole all the shape with inspection shaft is consistent, can lay at heteroid inspection shaft like this.Because the backing plate radius is bigger, make the high and transportation inconvenience of monoblock backing plate cost, therefore backing plate is designed to the fanning strip of the identical size of polylith, and in the both sides of fanning strip draw-in groove and card article is set radially, be convenient to like this make and install.The effect that the pressure-bearing muscle plays good pressure-bearing and improves fanning strip intensity.The fanning strip surface arranges fin and/or the groove of arc, so not only help to improve the stability that the monoblock backing plate is laid, and infiltration is mobile along the backing plate surface to play good preventing.

Description of drawings

Fig. 1 is structural representation of the present invention;

Fig. 2 is the structural representation of a fanning strip in the middle of Fig. 1;

Fig. 3 is A-A sectional view embodiment one among Fig. 2;

Fig. 4 is A-A sectional view embodiment two among Fig. 2;

Fig. 5 is A-A sectional view embodiment three among Fig. 2.

The specific embodiment

Embodiment one: as Fig. 1, Fig. 2 and shown in Figure 3, inspection shaft of the present invention water seepage prevention pad, comprise by playing the backing plate that flexible material is made, backing plate central authorities offer circular through hole 7, the outer ring of backing plate is identical with the shape of through hole 7, the shape size of through hole 7 is identical with the shape size of inspection shaft cross section of inboard wall, and the shape size of backing plate outer ring is provided with pressure-bearing muscle 1 greater than the shape size of inspection shaft external wall cross-section in the backing plate.

Backing plate is made up of the fanning strip 2 of two identical sizes at least, is six fanning strips 2 among Fig. 1, and every fanning strip 2 radially is respectively equipped with draw-in groove 3 with card article 4 with both sides simultaneously, and the section of card article 4 and draw-in groove 3 is suitable trapezium structure; Be embedded into by the card article 4 on the fanning strip 2 in the draw-in groove 3 of another piece fanning strip 2, all fanning strips 2 are combined into the backing plate of annular.Draw-in groove 3 on same fanning strip 2 and card article 4 are for being made into integration.

Every fanning strip 2 surfaces are equipped with fin 5, and fin 5 is the arcuate structure along fanning strip 2 circumferential direction.

Pressure-bearing muscle 1 radially constitutes net structure with circumferential arrangement along fanning strip 2.

Between inspection shaft walling crib upper surface and well lid base lower surface, lay backing plate, the inner ring edge of backing plate and inspection shaft borehole wall inner ring are consistent, the outward flange of backing plate is laid between roadbase and the surface course simultaneously, the elastic packing effect of backing plate, can stop effectively that like this rainwater on the road surface no longer oozes under between the crack between the inspection shaft borehole wall outside and surface course and slit, it is strong through the possible mistake of rainwater long period of soaking to avoid inspection shaft to ram soil layer on every side, makes basic unit remain good consolidation and supporting capacity.Can keep the smooth of road preferably like this, also protect inspection shaft and prolonged its application life.Because the backing plate radius is bigger, make the high and transportation inconvenience of monoblock backing plate cost, therefore backing plate is designed to the fanning strip 2 of the identical size of polylith, and in the both sides of fanning strip 2 draw-in groove 3 and card article 4 is set radially, be convenient to like this make and install.The effect that pressure-bearing muscle 1 plays good pressure-bearing and improves fanning strip 2 intensity.Fanning strip 2 surfaces arrange fin 5 and/or the groove of arc, so not only help to improve the stability that the monoblock backing plate is laid, and infiltration are mobile along the backing plate surface to play good preventing.

Embodiment two: as Fig. 1, Fig. 2 and shown in Figure 4, be that with the difference of embodiment one every fanning strip 2 surfaces are equipped with groove 6, groove 6 is the arcuate structure along fanning strip 2 circumferential direction.

Embodiment three: as Fig. 1, Fig. 2 and shown in Figure 5, be that with the difference of embodiment one every fanning strip 2 surfaces are equipped with fin 5 and groove 6, fin 5 and groove 6 are along the arcuate structure of fanning strip 2 circumferential direction.

Because the shape of cross section of the inspection shaft borehole wall has circle, fan-shaped or rectangle, thus the shape of backing plate and through hole 7 all the shape with inspection shaft is consistent, can lay at heteroid inspection shaft like this.The shape of backing plate and through hole 7 is circle among above-mentioned three embodiment.Certainly, the backing plate of fan-shaped or rectangle is equally within protection scope of the present invention.

Claims

1. inspection shaft water seepage prevention pad, it is characterized in that: comprise by playing the backing plate that flexible material is made, backing plate central authorities offer the through hole of circle, fan-shaped or rectangle, the outer ring of backing plate is identical with the shape of through hole, the shape size of through hole is identical with the shape size of inspection shaft cross section of inboard wall, and the shape size of backing plate outer ring is greater than the shape size of inspection shaft external wall cross-section.

2. inspection shaft according to claim 1 water seepage prevention pad, it is characterized in that: described backing plate is made up of the fanning strip of two identical sizes at least, every fanning strip radially is respectively equipped with draw-in groove with card article with both sides simultaneously, and the section of card article and draw-in groove is suitable trapezium structure; Be embedded in the draw-in groove of another piece fanning strip by the card article on the fanning strip, all fanning strips are combined into the backing plate of annular.

3. inspection shaft according to claim 2 water seepage prevention pad, it is characterized in that: described every fanning strip surface is equipped with fin and/or groove, and fin and/or groove are the arcuate structure along the fanning strip circumferential direction.

4. according to claim 1 or 2 or 3 described inspection shaft water seepage prevention pads, it is characterized in that: be provided with the pressure-bearing muscle in the described backing plate, the pressure-bearing muscle radially constitutes net structure with circumferential arrangement along fanning strip.