CN2591093Y

CN2591093Y - Vertical water-permeable pipe core pipe

Info

Publication number: CN2591093Y
Application number: CN 02250266
Authority: CN
Inventors: 李兰英
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-12-13
Filing date: 2002-12-13
Publication date: 2003-12-10
Anticipated expiration: 2012-12-13

Abstract

The utility model discloses a core pipe of a vertical water permeable pipe, which comprises a spiral spring. The utility model is characterized in that in the spiral spring, the thread pitch of adjacent to one end is smaller than the thread pitch adjacent to the other end. when the utility model is in actual use, the end of with small thread pitch of the spiral spring of the vertical Water permeable pipe of the utility model is arranged in the deep part of an earth body; thus, the pressure resistance of the vertical permeable pipe is consistent with change of the earth pressure from small to large; moreover, because the thread pitch of the spiral spring in the deep part of the earth body is decreased, the safe lodging resistance is improved. The utility model can be used for various vertical drainage occasions such as a soft foundation vertical drainage channel, a retaining wall, bridge abutment back drainage, slope horizontal hole drainage, a pressure relief well, etc.

Description

Vertical permeable tube core pipe

One), technical field

The utility model relates to a kind of vertical water-permeable pipe that is applied to underground eliminating infiltration, relate in particular to be arranged in the ground and with the cross-shaped vertical permeable tube core pipe of ground surface.

Two), background technology

In the civil engineering underdrainage, need use water-permeable pipe and get rid of infiltration, especially in the following occasion: the occasion of vertical drainages such as the retaining wall back of the body, the draining of the abutment back of the body, soft foundation vertical drainage passage, relief well, sliding mass horizontal hole drainage.The utility model is related vertically is meant and is arranged in the ground and is vertically with direction that extraneous ground intersects, therefore, the sliding mass horizontal hole drainage is because flat hole and domatic intersecting also belong to the vertical drainage occasion, put flexible porous tube and get rid of infiltration in that these vertical drainage occasions are standing at present, flexible porous tube promptly is to be covered with permeatable filter layer outside helical spring, the permeable tube core pipe of flexible porous tube is a uniform pitch helical spring at present, as shown in Figure 1, in these occasions, having shortcoming with the uniform pitch helical spring as the core pipe of flexible porous tube is: the permeable tube core pipe of uniform pitch structure itself causes vertical applied force unreasonable: because the vertical drainage occasion of saying in the above, all having soil pressure acts on the water-permeable pipe, and, vertically overhead dark more, the soil pressure that acts on the water-permeable pipe is big more, and being uniform pitch helical spring core pipe, prior art bears the ascending soil pressure effect that is applied to it, cause near the big end distortion of soil pressure excessive like this, especially soft basic vertical drainage body soil body depths one end is out of shape excessive in soft basic deformation process and lodging, makes the vertical drainage passage ineffective; When the sliding mass horizontal hole drainage, soil pressure also is from inside to outside to change equally.

Notification number is to disclose a kind of bullet in the Chinese utility model patent manual of CN2238852Y to mould flexible porous tube, this water-permeable pipe comprises tube wall supporting mass and permeable filtration beds, wherein the tube wall supporting mass is made up of helical spring steel wire wild card plastics card article, its shortcoming also as mentioned above: unreasonable structure when being used in the vertical drainage occasion and the easily row's of causing infiltration failure.

Three), utility model content

The purpose of this utility model provides a kind of vertical permeable tube core pipe, and the vertical water-permeable pipe that is made of this vertical permeable tube core pipe can overcome the shortcoming of prior art flexible porous tube in the vertical drainage occasion.

The purpose of this utility model realizes by following technical measures: vertical permeable tube core pipe, comprise helical spring, and it is characterized in that: the pitch of the close end of this helical spring is less than the pitch near the other end.

As a kind of form of the present utility model, described helical spring pitch can be the gradual change shape to the other end by an end; Can also be provided with vertical muscle on the described helical spring.

As another kind of form of the present utility model, the quantity of the vertical muscle of the end that described helical spring pitch is little can be more than the quantity of the vertical muscle of the helical spring other end; The quantity of the vertical muscle of the end that described helical spring pitch is little can be the even-multiple of the vertical muscle quantity of the helical spring other end.

As another kind of form of the present utility model, described helical spring at least one end can be provided with permeable; Described permeable can be the three-dimensional sleave entangled web of vegetable sponge network shape.

As another kind of form of the present utility model, described helical spring is outer can be coated with latticed layer; Described latticed layer is outer can to have swathed silk thread.

As another kind of form of the present utility model, described helical spring is outer can be provided with permeatable filter layer, and permeatable filter layer has swathed silk thread outward again.

Vertical permeable tube core pipe of the present utility model compared with prior art has the following advantages: because permeable tube core pipe described in the utility model is the pitch of the pitch of the close end of helical spring less than the close other end, when reality is used, when the vertical water-permeable pipe that is made of vertical permeable tube core pipe is arranged at the occasion of various vertical drainages, an end little helical spring pitch is arranged at soil body depths, like this, the ascending variation of the anti-pressure ability of vertical water-permeable pipe itself and soil pressure is consistent, and because soil body depths helical spring pitch reduces, the lodging tolerance of itself is strengthened, if be provided with vertical muscle on the helical spring again, then thoroughly eradicated helical spring lodging phenomenon, and make the vertical permeable tube core pipe itself not only can draining, the function that also has reinforcement, in addition when helical spring vertical muscle in soil body depths increases, can better support the outer permeatable filter layer that covers, not cause the permeatable filter layer distortion excessive, strengthen water-permeable pipe intensity and drainability greatly.

Four), description of drawings

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Fig. 1 is the permeable tube core pipe perspective view of prior art flexible porous tube.

Fig. 2 is the perspective view of the utility model embodiment 1.

Fig. 3 is the perspective view of the utility model embodiment 2.

Fig. 4 is the perspective view of the utility model embodiment 3.

Fig. 5 is the perspective view of the utility model embodiment 4.

Fig. 6 is the viewgraph of cross-section of the utility model embodiment 5.

Fig. 7 is the latticed layer perspective view that the utility model embodiment 5 uses.

Fig. 8 is the outer silk thread schematic diagram that swathes of the utility model embodiment 5 latticed layers.

Five), the specific embodiment

As shown in Figure 2, the permeable tube core pipe of present embodiment 1 is a helical spring 1, the pitch h of this helical spring 1 close lower end is less than the pitch h of helical spring near the upper end, and helical spring 1 pitch h from bottom to top is ascending gradual change shape, and the pitch of gradual change shape can adapt to the descending gradual change of soil pressure preferably.Certain helical spring pitch also can be made into non-gradual change shape, h refers to the distance between adjacent two rings of helical spring among the figure, be pitch, the helical spring of present embodiment 1 is for to be curved by high tensile steel wire, during actual the use, on high tensile steel wire, carry out antirust processing and can be coated with one deck PVC layer, outside helical spring, coat the occasion that permeatable filter layer such as geotextile promptly can be used for various vertical drainages then, little pitch the vertical little end of water-permeable pipe helical spring pitch is arranged at soil body depths, owing to can make vertical water-permeable pipe better resist the effect of soil pressure.

As shown in Figure 3, present embodiment 2 is substantially the same manner as Example 1, difference is to be provided with in helical spring ring inboard together vertical muscle 2, the vertical muscle 2 of present embodiment 2 is a high tensile steel wire, be welded on helical spring inboard, vertical muscle 2 not only can strengthen helical spring lodging tolerance, and can be to the permeable tube core pipe of former helical spring reinforcement, certainly, vertically muscle adopts the strip shape body of plastic strip or other materials all to be fine.

As shown in Figure 4, present embodiment 3 is substantially the same manner as Example 2, difference has been in helical spring ring arranged outside the vertical muscle 2 of twice, and in the little end ring outside of helical spring pitch, set up the short vertical muscle 3 of twice, the vertical muscle 3 of the weak point of setting up is distributed between the former vertical muscle 2, certainly, the vertical muscle of present embodiment 2 can be many, and can be so that the total vertical muscle quantity of the little end of helical spring pitch is the even-multiple of the other end, because the vertical muscle quantity of the little end of helical spring pitch is many, thereby the permeatable filter layer that can powerful support covers is outward resisted the big influence of dark soil pressure.

As shown in Figure 5, present embodiment 4 is substantially the same manner as Example 3, difference is that the vertical permeable tube core pipe of present embodiment is on the basis of embodiment 3, be provided with permeable 4 at helical spring two ends, can be various forms such as perforated plate for permeable 4, the permeable 4 three-dimensional sleave entangled web of sponge gourd grain shape for the formation of modified poly ethylene spray silk of present embodiment, caulked is bonded in helical spring two ends.Permeable 4 of the end not only can drainage, in case foreign material enter in the pipe, and when outside this vertical permeable tube core pipe, coating permeatable filter layer, vertical muscle and helical spring termination can lunge in permeable 4, in order to avoid puncture the permeatable filter layer of termination, the helical spring of permeable 4 all right supporting base end portion.Certainly, only be provided with permeable 4 and also be fine the permeable 4 helical spring termination that can be applied to each embodiment at an end of present embodiment 4.

As shown in Figure 6, present embodiment 5 is substantially the same manner as Example 4, difference is that the vertical permeable tube core pipe of present embodiment is on the basis of embodiment 4, also coated the latticed layer 5 of one deck in helical spring periphery, and outside latticed layer 5, swathed silk thread 6 again, the latticed layer 5 of present embodiment is the tubular polypropylene lattice, and as shown in Figure 7, latticed layer 5 also can be coated on outside the helical spring for the plane grid layer; Latticed layer 5 plays permeatable filter layer and the anti-helical spring lodging effect that support is covered outward, and latticed layer 5 can be coated on outside the helical spring of above each embodiment; The silk thread 6 of present embodiment 5 is a dacron thread, is bonded in outside the latticed layer 5, and dacron thread 6 as shown in Figure 8; Latticed layer 5 can certainly be replaced by one deck permeatable filter layer such as geotextile.

Claims

1, vertical permeable tube core pipe comprises helical spring, it is characterized in that: the pitch of the close end of this helical spring is less than the pitch near the other end.

2, vertical permeable tube core pipe according to claim 1, it is characterized in that: described helical spring pitch is the gradual change shape by an end to the other end.

3, vertical permeable tube core pipe according to claim 1 is characterized in that: also be provided with vertical muscle on the described helical spring.

4, vertical permeable tube core pipe according to claim 3, it is characterized in that: the quantity of the vertical muscle of the end that described helical spring pitch is little is more than the quantity of the vertical muscle of the helical spring other end.

5, vertical permeable tube core pipe according to claim 4, it is characterized in that: the quantity of the vertical muscle of the end that described helical spring pitch is little is the even-multiple of the vertical muscle quantity of the helical spring other end.

6, according to the described arbitrary vertical permeable tube core pipe of claim 1 to 5, it is characterized in that: described helical spring at least one end is provided with permeable.

7, vertical permeable tube core pipe according to claim 6 is characterized in that: described permeable is the three-dimensional sleave entangled web of sponge gourd grain shape.

8, according to the described arbitrary vertical permeable tube core pipe of claim 1 to 5, it is characterized in that: described helical spring is coated with latticed layer.

9, vertical permeable tube core pipe according to claim 8 is characterized in that: the outer silk thread that swathed of described latticed layer.

10, according to the described arbitrary vertical permeable tube core pipe of claim 1 to 5, it is characterized in that: described helical spring is outside equipped with permeatable filter layer, and permeatable filter layer has swathed silk thread outward.