CN201224887Y

CN201224887Y - Well point tube for flexible soil foundation water drain consolidation

Info

Publication number: CN201224887Y
Application number: CNU2008200778573U
Authority: CN
Inventors: 聂庆科; 胡建敏; 王国辉; 李友东; 张春来; 高飞; 陈军红
Original assignee: Hebei Construction Prospecting Research Institute Co Ltd
Current assignee: Hebei Construction Prospecting Research Institute Co Ltd
Priority date: 2008-07-14
Filing date: 2008-07-14
Publication date: 2009-04-22
Anticipated expiration: 2018-07-14

Abstract

The utility model relates to a well point pipe used for drainage consolidation for the soft soil foundation. The pipe core of the well point pipe is a PVC pipe, the PVC pipe is divided into three sections from down to up, wherein a sealing end cover is arranged at the bottom end of the lower section, i.e., deposition section; water permeable holes distributed in an intercrossed way are arranged at the middle section, i.e., draining section; a dead pipe section is arranged on the upper section; a supporting pipe support is longitudinally bound outside the pipe core of the draining section, a nonwoven inner filtering screen is covered outside the supporting pipe support, centralizers are longitudinally arranged on the draining section at intervals, the centralizers are of double-ring structures, the distance between the inner and the outer rings is 3 cm to 5 cm, the inner and the outer rings are connected through pull rods, the inner ring is respectively sleeved on the pipe core and an inner filtering screen and fixed on the pipe core via tapping screws, a nylon outer filtering screen is sleeved outside the outer ring, and filtering material is filled between the inner filtering screen and the outer filtering screen. The well point pipe has the advantages of no sand flying, no clogging and no abandoned well during the draining process, simple manufacturing process, low cost, non-leakage of the filtering material, good drainage effect and long service life.

Description

A kind of well point pipe that is used for soft foundation discharge fixing

Technical field

The utility model relates to the device of soft foundation discharge fixing, particularly a kind of well point pipe that is used for soft foundation discharge fixing.

Background technology

Under the situation of China's land resources anxiety, reclaiming land from the sea is the important channel that increases arable land and construction land.The general method that adopts hydraulic reclamation of reclaiming land from the sea, be about to marine earth through the piping hydraulic reclamation to the seabeach, the formation soil.Just the place of hydraulic reclamation because the very high and dead-soft of water content can not be directly used in engineering construction, must be handled through discharging consolidation, improves its intensity.The dewatering installation that adopts has plastic drain (plastic draining board) at present, and water discharge method has light well point precipitation etc.Plastic drain is to apply a constant load again to carry out draining after the overlay film sealing; Light well point precipitation is to carry out precipitation by form vacuum in the well point, and its key device is the well point pipe.Well point pipe unit commonly used is at present made complicated, and cost is higher, and the drainage weak effect is undesirable to the weak soil drainage effect that transmission coefficient is very little, and the well point pipe often occurs by silting, the problem of well point tube failure.

Summary of the invention

The purpose of this utility model provide a kind of simple in structure, be easy to make, cost is low and can recycle and reuse, drainage effect is good, can be used for the well point pipe of the soft foundation discharge fixing of permeance property difference.

The purpose of this utility model is to realize like this.A kind of well point pipe that is used for soft foundation discharge fixing is divided into three sections from bottom to top, and there is end cover the hypomere bottom, is precipitating phase; The permeable hole of cross-distribution is arranged on the stage casing, for the drainage section; Epimere is dead pipeline section, is used to guarantee the vacuum of well point pipe.The outer vertically binding of drainage section tube core has the support pipe support, its outer wrapping nonwoven Inner filter net, go back longitudinal separation on the drainage section centralizer is set, centralizer is a twin nuclei, and inner and outer ring is 3～5cm at interval, has pull bar to connect, inner ring sleeve is put on tube core and Inner filter net, be fixed on the tube core with tapping screw, outer shroud is nested with the nylon outer leaching net outward, filling filtrate between Inner filter net and the outer leaching net.Tube core can be the pvc pipe of diameter 30～40cm.The permeable hole diameter can be 5～10mm; Outer leaching net is 60～80 purpose nylon leaching nets, and the transmission coefficient of Inner filter net should be less than outer leaching net.

It is one group with 30～50 when the utility model well point pipe uses, place the weak soil wellhole, by the suction of drainage power unit, underground water sees through outer leaching net and enters filter material layer, filtered by filter material layer after Inner filter net, permeable hole enter well point pipe tube core, be sucked out ground again.Since be by centralizer and interior outer leaching net guarantee the well point pipe in wellhole the tram and well point pipe outside the effective thickness of filtrate, multiple filtration through outer leaching net, filter material layer, Inner filter net, guaranteed the drainage effect of this device, tiny soil particle after the precipitating phase of well point pipe will filter deposits, thereby do not run sand, non-silting, disused well not in drainage procedure, increase application life greatly.

The beneficial effect that the utility model is obtained is: well point pipe manufacturer technology is simple, cost is low, filtrate is not missed, dewatering effect is good, long service life.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is Figure 1A-A sectional view.

The specific embodiment

As shown in Figure 1 and Figure 2, a kind of well point pipe that is used for soft foundation discharge fixing is divided into three sections from bottom to top, and there is end cover 8 the hypomere bottom, is precipitating phase 9; The permeable hole 4 that cross-distribution is arranged on the stage casing, permeable hole diameter are 5～10mm, are drainage section 10; Its epimere is dead pipeline section 11, is used to guarantee the vacuum of whole well point pipe.The 1 outer vertically binding of drainage section 10 tube cores has the pipe support 5 of support, its outer wrapping nonwoven Inner filter net 6; Go back longitudinal separation 30～50cm on the drainage section 10 centralizer 2 is set, centralizer 2 is a twin nuclei, inner and outer ring distance 3～5cm, there is pull bar to connect, inner ring sleeve is put on tube core 1 and Inner filter net 6, be fixed on the tube core 1 with tapping screw, outer shroud is equipped with 60～80 purpose nylon leaching nets 3 outward, filling filtrate 7 between Inner filter net 6 and the outer leaching net 3.Tube core 1 is the pvc pipe of diameter 30～40cm.

Claims

1, a kind of well point pipe that is used for soft foundation discharge fixing is characterized in that the tube core (1) of said well point pipe is a pvc pipe, is divided into three sections from bottom to top, and there is end cover (8) the hypomere bottom, is precipitating phase (9); The permeable hole (4) that cross-distribution is arranged on the stage casing is drainage section (10); Epimere is the dead pipeline section (11) that is used to guarantee well point pipe vacuum; The outer vertically binding of the tube core (1) of drainage section (10) has support pipe support (5), its outer wrapping nonwoven Inner filter net (6), drainage section (10) goes up also, and longitudinal separation is provided with centralizer (2), centralizer (2) is a twin nuclei, and inner and outer ring distance 3～5cm has pull bar to connect, inner ring sleeve is put on tube core (1) and Inner filter net (6), be fixed on the tube core (1) with tapping screw, outer shroud is nested with nylon outer leaching net (3) outward, filling filtrate (7) between Inner filter net (6) and the outer leaching net (3).

2, the well point pipe that is used for soft foundation discharge fixing according to claim 1, it is characterized in that said tube core (1) is the pvc pipe of diameter 30～40cm, said permeable hole (4) diameter is 5～10mm, outer leaching net (3) is 60～80 purpose nylon leaching nets, and the transmission coefficient of Inner filter net (6) is less than outer leaching net (3).