CN1095807A

CN1095807A - Under-road pipeline construction method without breaking road surface

Info

Publication number: CN1095807A
Application number: CN 94110046
Authority: CN
Inventors: 戴君
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-01-31
Filing date: 1994-01-31
Publication date: 1994-11-30

Abstract

A kind of under-road pipeline construction method without breaking road surface.Winch is installed in operating pit, makes a call to earlier an aperture on the direction that needs pass through, earth-marker, soil-cutter, the dumper that draws various outer diameter successively with winch enlarges the hole gradually then, until the hole of needs directly.Following Guan Houzai tamps the slit between pipeline and hole wall with the pressurized air sandblast.This method is compared with pipe method under the ditching, have save time, save a large amount of expenses, do not destroy the road surface, do not block the traffic, advantage free from environmental pollution, applied widely.

Description

Under-road pipeline construction method without breaking road surface

The invention belongs to and lay various pipe technologies under the road.

Along with the develop rapidly of urban construction, the laying project amount of the various underground pipe networks in city is also increasing, and the method for laying various pipelines employings at present has three kinds.One, pipe jacking method: respectively dig an operating pit in the road both sides that needs pass through, will manage jacking with top pick or jack, this method is long in time limit, jacking is apart from weak point, only be applicable to and the laying of small-caliber metal tubes be difficult to assurance duration and construction quality.Inapplicable to pipelines such as big caliber, more piece pipe, band thermal insulation layers.Two, tyretube process: this method is to use the above hole of machinery or one meter in diameter of hand digging earlier, and the tubule that needs laying is put in bassoon of jacking then again in bassoon.Equipment was huge when this method machinery excavated, operating pit is big, expense is high, serious to environmental disruption; Hand digging is then long in time limit, labor intensity is high.The third method is the trench digging laying-out tube process that wide model uses: be about to the road surface and manually dig trench, tubing in ditch, this method extensively adopts in general city, this method to the city bring very harmful, destroy urban construction, seriously block the traffic, pollute urban environment, the road surface is damaged serious.

The object of the present invention is to provide that a kind of speed of application is fast, efficient is high, quality is good, do not destroy the method for tubing under the road on road surface.

Technological scheme of the present invention is as follows: respectively dig an operating pit in the road both sides that needs pass through, make a call to an aperture along passing through route to another operating pit (second hole) direction from an operating pit (first hole) earlier; The hole is got through the back and penetrate a wire rope in the hole, one end of wire rope is wrapped on the winch in the first operating pit, one of another termination has an end of the earth-marker of several upright swords, wire rope on the winch in the second operating pit connects the other end of earth-marker, passes through aperture by the traction of the winch in the first operating pit earth-marker hole wall is divided into several pieces; And then change a soil-cutter that has several chisel edges, by the winch traction soil of hole wall is drawn down; Change the staggered dumper of several chisel edges again, the soil in the hole is discharged by the winch traction; Draw soil, cut soil, the casting operation according to the size of the diameter in the hole that will dig repeatedly several times with earth-marker, soil-cutter and the dumper of various outer diameter, till reaching the size that needs; Again the reamer that baffle plate is arranged with winch traction tubular, a rear portion in the hole repeatedly carrying-off remove surflaes several times, the hole wall is repaired moulding; By the bloated earthenware of taper of winch traction, with the extruding of hole wall once, make the hole wall smooth at last; Tubing tamps the slit between pipeline and the hole wall at last then.The first step of the present invention spiles and can use following means: with the punching of air pressure punch, be power with pressurized air promptly one,, promote the head extruding perforation of punch, this method is applicable to the soil property that water content is lower; Two, driling machine horizontal drilling is applicable to that soil structure is than complicated situation; Three, hydraulic ceiling coil machine push pipe is applicable to the soil property that water content is bigger; Four, bump push pipe: pneumatic impact hammer and process duct are installed on the same adjustable support, process duct are banged in the soil, be applicable to the backfill soil property that water content is bigger with beche.

The present invention compares with additive method has that speed of application is fast, efficient is high, the measured advantage of matter, lays the following pipeline of 25 centimetres of calibers and compares with trench method, saves time 50%, reduces expenses 50%; Lay the following pipeline of 50 centimetres of calibers and compare, save time 30%, reduce expenses 20% with trench method; Lay the pipeline of 100 centimetres of left and right sides calibers and compare with tyretube process, efficient improves 5 times, reduces expenses 50%.This method advantage when railroad crossing and building is very outstanding, is that additive method can't be compared.It is tetragonal hole that method provided by the invention can be excavated the cross section, is particularly suitable for the laying of communication cable.

Embodiment

With 4000 centimetres of roads of crossing length, footpath, hole is example for 50 centimetres.Earlier respectively dig long 280 centimetres, wide 180 a centimetres operating pit in the road both sides that needs pass through, 200 centimetres of the degree of depth in hole are punched 15 centimetres in aperture with the air pressure punch under the lower situation of soil property water content.A winch respectively is installed in two operating pits, and the winch in the first operating pit is done the reaming traction and is used main frame, 17 watt thousand of power, and by gearbox, multiplying power is 25 tons.Winch in the second operating pit is as the secondary machine of the wire rope of pulling back, and pulling force is 3 tons.The diameter of the wire rope that main frame uses is 2.5 centimetres, and secondary machine is 1 centimetre.Earlier external diameter of traction is to have 6 upright sword earth-markers on 20 centimetres, axostylus axostyle, hole wall is divided into 6 parts, in the hole, pass through once with earth-marker again, divided soil on the hole wall is drawn down, the structure of earth-marker is the riser that is welded with 3～6 equal angles distributions radially on an axostylus axostyle, is welded with chisel edge on the riser.Be that 20 centimetres dumper is pulled in the hole carrying-off by winch and several times soil is discharged successively with an external diameter again.The structure of dumper is to be welded with the riser that two rows have 3～6 equal angles to distribute on an axostylus axostyle, is welded with chisel edge on the riser, staggers mutually in two rows' chisel edge position, and this spline structure makes dumper to pass through smoothly in the hole, does not stop up; Soil zone can be gone out again.Using external diameter more successively is 25,30,35,40,45,50 centimetres soil-cutter, earth-marker, dumper, by the winch traction, the hole is directly expanded into 50 centimetres.Again with tubular, a rear portion have baffle plate, diameter is 50 centimetres reamer, is pulled in the hole repeatedly carrying-off by winch and removes surflaes several times, wall finishing in hole is shaped.As to make a call to a cross section be square hole, is square reamer in an available profile of this step, and being pulled in the hole repeatedly by winch, carrying-off then is trimmed to the hole square several times.In order to strengthen hole wall soil property density, be convenient to the laying of pipeline at last, expand earthenware once with a taper again, make the hole wall smooth the extruding of hole wall.After this pipeline can be introduced in the hole with winch, with pressurized air fine sand be sprayed in the slit between pipeline and hole wall again, the slit is tamped.Can also cement slurry or other mud be pumped in the slit with the casting stock pump.

Claims

1, a kind of under-road pipeline construction method without breaking road surface respectively digs an operating pit in the road both sides that needs pass through, and makes a call to an aperture along passing through route to another operating pit (second hole) direction from an operating pit (first hole) earlier; The hole is got through the back and penetrate a wire rope in the hole, one end of wire rope is wrapped on the winch in the first operating pit, one of another termination has an end of the earth-marker of several upright swords, wire rope on the winch in the second operating pit connects the other end of earth-marker, pass through aperture by the traction of the winch in first operating pit earth-marker, hole wall is divided into several pieces; And then change a soil-cutter that has several chisel edges, by the winch traction soil of hole wall is drawn down; Changed the staggered dumper of several chisel edges again, the soil in the hole has been discharged by the winch traction; Draw soil, cut soil, the casting operation according to the size of the diameter in the hole that will dig repeatedly several times with earth-marker, soil-cutter and the dumper of various outer diameter, till reaching the size that needs; Again the reamer that baffle plate is arranged with winch traction tubular, a rear portion in the hole repeatedly carrying-off remove surflaes several times, the hole wall is repaired moulding; By the bloated earthenware of taper of winch traction, with the extruding of hole wall once, make the hole wall smooth at last; Tubing tamps the slit between pipeline and the hole wall at last then.

2, under-road pipeline construction method without breaking road surface according to claim 1 is characterized in that aperture adopts the punching of air pressure punch.

3, under-road pipeline construction method without breaking road surface according to claim 1, its feature adopts the driling machine horizontal drilling at aperture.

4, under-road pipeline construction method without breaking road surface according to claim 1 is characterized in that aperture adopts hydraulic ceiling coil machine apical pore.

5, under-road pipeline construction method without breaking road surface according to claim 1 is characterized in that aperture adopts the punching of bump method push pipe.

6, according to claim 1 or 2 or 3 or 4 or 5 described under-road pipeline construction method without breaking road surface, it is characterized in that the slit between pipeline and the hole wall is tamped with the pressurized air sandblast.

7,, it is characterized in that the slit between pipeline and the hole wall is tamped with the method for casting stock pump casting slurry according to claim 1 or 2 or 3 or 4 or 5 described under-road pipeline construction method without breaking road surface.