CN105113525A

CN105113525A - Light casing pipe for well point

Info

Publication number: CN105113525A
Application number: CN201510527639.XA
Authority: CN
Inventors: 祝建明; 陈建中; 孙拥军; 王金鸽; 李红; 王晓增; 丘永展; 娄渊辉
Original assignee: Henan DR Construction Group Co Ltd
Current assignee: Henan DR Construction Group Co Ltd
Priority date: 2015-08-26
Filing date: 2015-08-26
Publication date: 2015-12-02
Anticipated expiration: 2035-08-26
Also published as: CN105113525B

Abstract

The invention discloses a light casing pipe for a well point. The light casing pipe comprises a high-pressure water gun. Four propelling plates are evenly distributed on the pipe wall of the lower end of the high-pressure water gun and arranged in vertical grooves of inner lantern rings on the inner wall of the casing pipe respectively. The lower ends of the propelling plates make contact with the groove bottom faces of the vertical grooves of the inner lantern rings. Eight outer lantern rings are evenly distributed on the outer circumferential face of the casing pipe along the circumference and provided with outward bends. Vertical grooves are formed by the bends and the casing pipe, steel rings are arranged in the evenly-distributed outer lantern ring grooves, the multiple outer lantern rings are evenly distributed in the axial direction of the casing pipe, the inner lantern rings and the outer lantern rings are fixed to the casing pipe through bolts, and the casing pipe is formed by rubber plates. The light casing pipe has the remarkable advantages that no dried-up well exists, and construction is convenient.

Description

A kind of light well point sleeve pipe

Technical field:

The present invention relates to a kind of building construction technology, particularly reduce building foundation pit groundwater table light well point sleeve pipe.

Background technology:

Often want excavation pit in building operations, when groundwater table of constructing is higher, in order to ensure deep pit monitor, require groundwater table to be reduced to below hole end absolute altitude at least 0.5m.For the soil property situation that the transmission coefficient such as silt or viscosity is less, usual employing light well point constructure scheme, namely chimney filter is inserted after adopting giant impact holing, and insert the filter material such as coarse sand or meter Shi, filter pipe is connected with water header, make to form negative pressure in pipe with vacuum machine water pump, the water outside pipe is drawn onto in pipe and is drawn out of, make groundwater table be down to the height of requirement.This technique has the advantage that construction is fast, cost is low and dewatering effect is good, but its maximum defect is, fill out the factor such as not in place by operant level, geological condition and filtrate to affect, frequent appearance " dried-up well " phenomenon, namely well point can not reduce water level, when this " dried-up well " quantity is more than 10%, the effect reducing water level can not be realized.

Summary of the invention:

The object of the invention is to provide one and does not occur " dried-up well " and a kind of light well point sleeve pipe of easy construction.

The technical scheme realizing the object of the invention is, a kind of light well point sleeve pipe, comprise giant, it is characterized in that: the tube wall of giant lower end is evenly equipped with four pushing plates, this pushing plate is placed in the vertical slot of the inner sleeve on internal surface of sleeve pipe respectively, its lower surface contacts with the groove bottom of inner sleeve vertical slot, eight outer sleeves that the outer peripheral face of sleeve pipe is uniformly distributed along the circumference, this outer sleeve has outside bending, this bending and sleeve pipe form vertical slot, steel ring is placed in uniform overcoat annular groove, described outer sleeve is axially uniform multiple along sleeve pipe, inner sleeve and outer sleeve are bolted on sleeve pipe, described sleeve pipe is that rubber tile surrounds.

The present invention has the remarkable advantage not occurring " dried-up well " and easy construction compared with the prior art.

Accompanying drawing illustrates:

Fig. 1 is light well point sleeve structure schematic diagram of the present invention; Fig. 2 is the A-A sectional drawing of Fig. 1.

Detailed description of the invention:

Technical scheme of the present invention is, the tube wall of giant 1 lower end is evenly equipped with four pushing plates 2, this pushing plate is placed in the vertical slot of the inner sleeve 6 on sleeve pipe 4 inwall respectively, its lower surface contacts with the groove bottom of inner sleeve vertical slot, the outer peripheral face of sleeve pipe 4 is uniformly distributed along the circumference eight outer sleeves 5, this outer sleeve has outside bending, this bending and sleeve pipe form vertical slot, steel ring 7 is placed in uniform overcoat annular groove, described outer sleeve is axially uniform multiple along sleeve pipe, inner sleeve and outer sleeve are bolted on sleeve pipe, and described sleeve pipe is that rubber tile surrounds.

Operating principle of the present invention and method of operating, first will be distributed in rubber tile with bolt, outer sleeve is fixed on rubber tile, after making rubber tile bend to tubular, by the lower end of described steel ring sleeve at sleeve pipe, the lower end of rubber tile is made to form tubular, and be enclosed within outside the shower nozzle 3 of giant, rubber tile top major part is that plate-like support is on ground, along with giant advances formation wellhole downwards, sleeve pipe is driven to enter in shaping wellhole by the pushing plate on giant, rubber tile is made to curve sleeve pipe gradually from bottom to top by steel ring, be enclosed within wellhole, when wellbore depth reaches requirement, extract giant out, sleeve pipe is stayed in wellhole, now in the stiffness by itself of sleeve pipe and sleeve pipe, the pressure of water can resist the pressure of the outer water and soil of balance wellhole, thus prevent collapse hole from causing the generation of " dried-up well ", just filter pipe and pointing filtrate can be inserted, due to protection and the buffer action of sleeve pipe, filtrate wraps up water pipe also completely at the bottom of pointing to hole completely, along with the filling of filtrate can extract sleeve pipe gradually, remove steel ring one by one, sleeve pipe is finally made to become rubber tile, this structural casing avoids operating personnel and takes handling frame, the advantage only just can constructed on the ground.

Claims

1. a light well point sleeve pipe, comprise giant, it is characterized in that: the tube wall of giant lower end is evenly equipped with four pushing plates, this pushing plate is placed in the vertical slot of the inner sleeve on internal surface of sleeve pipe respectively, its lower surface contacts with the groove bottom of inner sleeve vertical slot, eight outer sleeves that the outer peripheral face of sleeve pipe is uniformly distributed along the circumference, this outer sleeve has outside bending, this bending and sleeve pipe form vertical slot, steel ring is placed in uniform overcoat annular groove, described outer sleeve is axially uniform multiple along sleeve pipe, inner sleeve and outer sleeve are bolted on sleeve pipe, described sleeve pipe is that rubber tile surrounds.