CN1141489C

CN1141489C - Directly sucking and reversely circular bottom slag-removing method and equipment before filling concrete for drilling cast-in-situ pile

Info

Publication number: CN1141489C
Application number: CNB011246790A
Authority: CN
Inventors: 宁晋生
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-08-03
Filing date: 2001-08-03
Publication date: 2004-03-10
Anticipated expiration: 2021-08-03
Also published as: CN1332309A

Abstract

The present invention provides a method and a device for cleaning a directly sucking and reversely circulating hole bottom before concrete is filled into a drilling filling pile. The device is characterized in that the device is composed of a guide tube 1, a mud pump 2, a support frame 3, a frame lifting ring 5, a hydrocyclone 6, a water outlet pipe 4, a slurry return pipe 7, etc. Mud with large loam content is pumped from the bottom of a pile hole via the guide pipe by the mud pump or a sewage pump to be delivered to the hydrocyclone. The mud is divided into sand and slurry by the vortex of the hydrocyclone. The sand is discharged from a sand discharge port, and the slurry is returned to the pile hole by the slurry return pipe. In the process of cleaning, deposit at a hole bottom is churned up by moving the mud pump and the guide pipe, and is pumped out. The method and the device have the advantages of simplicity, easy operation, high cleaning speed, cleanness, high efficiency and low cost, and can be used for treating a drill rod burying accident in drilling.

Description

Direct absorbing type reversing port bottom slag-removing method and device before the bored pile concrete pouring

One, technical field

The invention belongs to construction process for bored pile and equipment, particularly hole bottom slag-removing method and the device before the bored pile concrete pouring.

Two, background technology

In using rotary drilling rig, percussive drill pore-creating filling pile work progress, sediment problem at the bottom of the preceding hole of bored pile filling stake does not all obtain fine solution all the time.As Chinese patent 98113538 disclosed a kind of drilled pile hole forming method and equipment, its drilled pile hole forming method, employing is revolved to grab and is drilled to the hole, get earlier core or comprehensively the broken churn drill of going up of revolution cutting advance, then, portal deslagging or mud circulation deslagging of grab bucket, or grab bucket portals and the compound deslagging of mud circulation, repeat to creep into, tapping process, until pore-forming.Behind pore-forming, the sediment that exists at the bottom of the hole does not have solution.And at present, bored pile irritated the processing of sediment mainly contains following several method at the bottom of the preceding hole:

(1) the anti-pore-forming that circulates uses the inverse circulation pump scarfing cinder, and this is a clinker removal method preferably at present, the problem and the shortcoming of its existence are: need wait for scarfing cinder to the preceding rig of this hole perfusion after the Completion of Drilling Hole, promptly adopt scarfing cinder behind the pore-forming of background technology, boring work stops, and the rig utilization rate is lower.And used anti-circulation sandstone pump configuration is complicated and heavy, and fault is more, and operation technique is had relatively high expectations, and its price is also higher.

(2) direct circulation pore-forming, processing to sediment at the bottom of the hole only is to use slush pump, send into the lower mud punching of sand content by conduit, sediment at the bottom of the hole dashed and the tape loop outer precipitation of portalling gradually, this method length consuming time and scarfing cinder are not thorough, the mud sand content is higher in the hole, stops after the punching that silt particle can very fast precipitation produce sediment in the mud.

(3) to no circulation pore-forming, as the rotary drilling rig pore-forming, percussive drill pore-forming etc., then can't cleaning hole after being lowered to conduit at the bottom of sediment.The objective of the invention is to overcome in the above existing drilling pouring stake construction, the deficiency of sediment method for cleaning before the concrete pouring, it is improved, and provide a kind of use equipment simple, operating procedure is simple, scarfing cinder speed is fast, cleans out thoroughly preceding direct absorbing type reversing port bottom slag-removing method of the concrete pouring that use cost is cheap and device.

Three, summary of the invention

The invention provides before the bored pile concrete pouring slag cleaning device at the bottom of the direct absorbing type reversing port, it comprises that the concrete that gos deep at the bottom of the hole irritates the outlet pipe that is connected on the framework of the foul water pump of conduit, following connecting duct or slush pump, the supporting pump housing and conduit, the pump housing, and also is provided with drop handle on framework.

Slag cleaning device at the bottom of the direct absorbing type reversing port before above-described a kind of bored pile concrete pouring is characterized in: also comprise the hydrocyclone that an outlet pipe connects, and be connected the return pipe of hydrocyclone top to the stake hole.

Direct absorbing type reversing port bottom slag-removing method before the bored pile concrete pouring of the present invention, be characterized in: adopt the sludge pump or the slush pump that are connecting conduit, conduit is goed deep into bottom, stake hole, carrying conduit, pump and framework by drop handle goes here and there up and down, stir at the bottom of the hole behind the sediment, transfer framework and make mud flood pump head, start pump and will extract the stake hole out, and drain in the mud pit through outlet pipe with the mud of slag.Simultaneously, replenish clear water or mud in the stake hole, continuous drawing is cleaned out until sediment.

Direct absorbing type reversing port bottom slag-removing method before the above bored pile concrete pouring, be characterized in: the band slag mud of extracting out in the described method is sent into hydrocyclone through outlet pipe, behind its parting sand and the slurry, sand is got rid of to walk clearly, slurry is back to a hole again by return pipe, the straight suction instead circulated, and cleans out until sediment.

Direct absorbing type reversing port bottom slag-removing method is applicable to that all underwater drilling castinplace piles irritate scarfing cinder work at the bottom of the preceding hole, and it is simple, easy to operate to have technology, and scarfing cinder speed is fast, thoroughly clean, and the duration is short, low cost and other advantages.Equipment therefor is simple in structure, floor space is little, easy to install.This method underground drilling accident that also can be used for holing is handled.

Four, description of drawings

Fig. 1 is a slag cleaning device at the bottom of the direct absorbing type reversing port.

Five, the specific embodiment

Below in conjunction with description of drawings exemplary embodiments of the present invention.

Slag cleaning device at the bottom of the direct absorbing type reversing port before Fig. 1, a kind of bored pile concrete pouring.By the conduit 1 that concrete at the bottom of deep stake 8 holes, hole is irritated, bottom connecting the foul water pump of conduit or slush pump 2, the supporting pump housing and conduit framework 3,, outlet pipe 4, spiral-flow type desander 6 and return pipe 7 are formed.Described pump is contained on the framework, setting up the connection of upper and lower flange or other form under the framework makes conduit be communicated with pump housing water inlet, its delivery port connects outlet pipe, and to hydrocyclone, revolve desander sand removing hole is arranged, the overfall mouth, the silt particle that sand removing hole is discharged is in time walked clearly, and the overfall mouth connects return pipe also to a stake aperture.Also has a drop handle 5 at the top of described framework.Described hydrocyclone is a kind of cyclonic separator, and it separates sand with slurry.

Use one of method of slag cleaning device of the present invention; Concrete steps:

1, connects foul water pump (perhaps slush pump) and irritate conduit, connect foul water pump upper water-out pipe and hydrocyclone, connect the outlet pipe on the desander and put into an aperture with concrete.

2, carry stress frame and go here and there up and down,, transfer framework and make mud flood pump head with sediment at the bottom of the stirring hole.

3, start foul water pump (or slush pump) and inhale hole bottom slurry, simultaneously, start the hydrocyclone desanding.Foul water pump is with the hole bottom slurry inspiration and send into hydrocyclone, and behind its parting sand and the mud, sand is discharged by sand removing hole, and mud is in the return pipe return aperture.

4, transfer conduit gradually according to the situation of shaking out, at the bottom of the hole, after the desander sand production rate reduces, the hole is described at the bottom of sediment remove substantially.

5, switch off the pump, sediment at the bottom of the desander, measured hole.As still there being sediment at the bottom of the measured hole, repeat above process, continue scarfing cinder, clean out until reaching sediment.

Two of the method for use slag cleaning device of the present invention; Concrete steps:

1, connects foul water pump or slush pump and irritate conduit, connect pump upper water-out pipe mud pit to the hole with concrete.

2, carry stress frame and go here and there up and down,, transfer framework and make mud flood foul water pump or mud pump head with sediment at the bottom of the stirring hole.

3, start slurry at the bottom of foul water pump (or slush pump) is inhaled the hole, simultaneously, moisturizing or mend slurry guarantees the water level in the hole.

4, till sediment is cleaned out at the bottom of the hole.

Points for attention in using operation scarfing cinder process:

1, should be constantly in the scarfing cinder process in the hole, injects clear water or mud, keep certain height of water level, prevent out that the quantity of slag it's the end causes in the hole to past too greatly water level.

2, perfusion frame mouth should be big, so that the pump housing and framework pass through.

3, advance to starch hose length and the pulp hose length should suitably be adjusted according to field condition, to satisfy the demand.

Claims

1, slag cleaning device at the bottom of the preceding direct absorbing type reversing port of a kind of bored pile concrete pouring, it comprises that the concrete that gos deep at the bottom of the hole irritates conduit (1), it is characterized in that: concrete is irritated the outlet pipe (4) that is connected on the framework (3), the pump housing of the foul water pump of the following connecting duct of conduit or slush pump (2), the supporting pump housing and conduit, and also is provided with drop handle (5) on framework.

2, slag cleaning device at the bottom of the preceding direct absorbing type reversing port of a kind of bored pile concrete pouring according to claim 1, it is characterized in that: it also comprises the hydrocyclone (6) that an outlet pipe connects, and is connected the return pipe (7) of hydrocyclone top to stake hole (8).

3, direct absorbing type reversing port bottom slag-removing method before a kind of bored pile concrete pouring, it is characterized in that: adopt the sludge pump or the slush pump (2) that are connecting conduit (1), with the deep bottom, stake hole (8) of conduit, put forward catheter pump and framework is gone here and there up and down by drop handle (5), at the bottom of the stirring hole behind the sediment, transferring framework makes mud flood pump head, starting pump will extract the stake hole out with the mud of slag, drain in the mud pit, simultaneously, replenish clear water or mud in the stake hole, continuous drawing is cleaned out until sediment.

4, direct absorbing type reversing port bottom slag-removing method before a kind of bored pile concrete pouring, employing is connecting the sludge pump or the slush pump (2) of conduit (1), conduit is goed deep into bottom, stake hole (8), put forward catheter pump and framework is gone here and there up and down by drop handle (5), stir at the bottom of the hole behind the sediment, transferring framework makes mud flood pump head, start pump and will extract the stake hole out with the mud of slag, it is characterized in that: the band slag mud of extraction is sent into hydrocyclone (6) through outlet pipe (4), behind its parting sand and the slurry, sand is got rid of to walk clearly, and slurry is back to a hole again by return pipe (7), the straight suction instead circulated, and cleans out until sediment.