CN205776263U - A kind of intake transformation structure - Google Patents

Abstract

The utility model discloses a kind of intake transformation structure, it is kettle mouth colligation to be cascaded by plural plastic kettle (2) plastic ties (3) and load the intake transformation assembly (11) formed in netted knitted bag (4), fills the waterglass (1) of 20% concentration in plastic kettle (2).After plugging structure of the present utility model is transferred in solution cavity, at the object equipped with waterglass broken at the bottom of hole so that it is with the cement grout in concrete, chemical reaction occurs in hole, form induration, decrease pipeline water flow and serosity is washed away number of dropouts；At backfill excavation landwaste on the basis of the bottom sediments of hole, waterglass concrete, in mixing consolidation process, forms the packing sealing of filling, beneficially hole stake sidewall to stake solution cavity periphery, hole certain limit.

Description

A kind of intake transformation structure

Technical field

This utility model relates to a kind of to bore and meet big pitot tube channel type karst in the drilling construction of lava stratum for pile foundation Or stake periphery in hole carries out a kind of technology of closure process when growing deep cavern, belong to pile foundation construction intake transformation hole creating technology neck Territory.

Background technology

Southwestern China karst is extremely grown.In the pile foundation pore-forming of municipal administration field, karst area, use rotation the most in a large number Dig drilled as holes technology.Churning driven is when boring chance karst, it may appear that fall brill, collapse hole etc., and on-the-spot generally employing concrete perfusion is carried out Process.But when boring the big flow velocity karst of chance or relatively cavern, the super side of concrete of perfusion is serious, causes cost to increase Add, as depicted in figs. 1 and 2.

When boring chance karst in Pile In Karst Area pore forming process at present, main employing concrete plugging method, steel pile casting envelope Every method, and the form sack grouting method of application and chemical grouting method in terms of leak stopping sealing.To big flow velocity karst or the most molten Hole, uses the concrete plugging method super side of often groundwater increment seriously, and cost is compared with greatly and effect is poor；To steel pile casting packing method due to steel Casing cannot reclaim and site construction technology is complicated, uses actually rare；Form sack grouting is to the stitching of geotechnique's cloth bag, on-the-spot grouting Equipment and technique all there are certain requirements, and additionally mould bag extends out existence restriction to cement grout volume in solution cavity, and churning driven exists After drilling this section of induration, its sealing and intensity are all more difficult to get guarantee, and Pipeline Water can be by between Seed harvest and slotted wall Gap continues towards pile body, isolates when causing concrete perfusion；Chemical grouting method construction technology is more complicated, to grout cures Time controls requirement height, and change fills the multipair environment of material and there is pollution.

Summary of the invention

The purpose of this utility model is the problem in order to exist when solving churning driven pore-forming in prior art, it is provided that a kind of Pile foundation becomes hole drill to meet the intake transformation structure of karst.

This utility model is achieved in that in hole solution cavity position backfills a part of landwaste in advance, then makes chemical pulp Liquid waterglass and the cement generation fast chemical reaction in concrete, accelerate its hardening process, utilize object and the net of large volume simultaneously Shape couples thing and forms cross-linked structure, the concrete in hardening process is produced certain protection and tractive fixation, makes concrete in hole stake Filling quickly form hardening induration in interior solution cavity and peripheral smaller range thereof, formation plugging effect.

Intake transformation of the present utility model comprises the steps:

Step 1: several fill the plastic kettle of the waterglass of 20% concentration, goes here and there each plastic kettle mouth by plastic ties It is linked togather, and loads netted knitted bag, and sealing ties, and forms intake transformation assembly；

Step 2: landwaste and shiver stone that aperture is dug stake generation use churning driven to be backfilled in hole；

Step 3: when backfill chip body progressively sinks down into Upper Plate of Karst Cave position in hole, pump into concrete in hole by concrete pump；

Step 4: concrete face sinks down into the above 1m in solution cavity top when highly locating in hole, and intake transformation assembly is put into hole Interior concrete face；

Step 5: under enter churning driven to relevant position, utilize the drill bit of churning driven vertically to be smash by intake transformation assembly Broken, and rotary drilling-head is stirred mixing simultaneously；

Step 6: whether the concrete face in peephole declines or directly miss；

Step 7: if concrete face did not occurred being decreased obviously in 10 minutes, then continue directly to after waiting 0.5 hour drill this section of envelope Blocking layer, and bore toward bottom；If slowly declining occurs in concrete face, then continue to pump into concrete；If being decreased obviously occurring and collapsing to solution cavity base plate, Then repeat step 3,4,5.

It is will by plural plastic kettle plastic ties that the intake transformation structure that this utility model uses is such that it Kettle mouth colligation is cascaded and loads the intake transformation assembly formed in netted knitted bag, fills 20% concentration in plastic kettle Waterglass.

Applicable elements of the present utility model: in cast-in-place concrete pile pile foundation pore-forming, bores and meets the karst that karst water flow velocity is higher Pipeline or hole stake sidewall grow relatively cavern, use under conditions of using the super side of filling concrete serious.

Advantage of the present utility model: (1) is at the object equipped with waterglass broken at the bottom of hole so that it is exist with the cement grout in concrete There is chemical reaction in hole, form induration, decrease pipeline water flow and serosity is washed away number of dropouts；(2) at backfill excavation rock Considering to be worth doing on the basis of the bottom sediments of hole, stake solution cavity periphery, hole certain limit, in mixing consolidation process, is formed and fills by waterglass-concrete Fill out, beneficially the packing sealing of hole stake sidewall；(3) main material and equipment all take from scene, easy construction, use cost Low, meet the requirement of municipal works duration anxiety；(4) the equal avirulence of raw material, environmentally friendly.

Accompanying drawing explanation

Fig. 1 illustrates when prior art is implemented because hole wall periphery grows large-scale solution cavity, fills concrete leakage serious；

Fig. 2 illustrates when prior art is implemented and takes away concrete because underground karst Pipeline Water washes away；

Fig. 3 illustrates material composition and the combination simplified schematic diagram of intake transformation assembly of the present utility model；

Fig. 4 illustrates the principle that this utility model is implemented: concrete solidification coalescence forms plugging action in office's bulk；

When Fig. 5 illustrates this utility model enforcement: pump into concrete and miss, continue to irrigate super side serious；

When Fig. 6 illustrates this utility model enforcement: landwaste and rock mass that stake excavation in backfill hole produces push up 1 ~ 2m to hole；

When Fig. 7 illustrates this utility model enforcement: after backfill material settles, pump into concrete and push up upper 2m to hole；

Fig. 8 illustrate this utility model implement time: under enter to block assembly；

When Fig. 9 illustrates this utility model enforcement: churning driven destroys closure assembly, serosity leaks；

When Figure 10 illustrates this utility model enforcement: in pumping concrete to hole, waterglass and concrete generation rapid hardening, and in braiding Bag, plastic kettle occur cementing, and hardening forms block；

When Figure 11 illustrates this utility model enforcement: drill the hardening induration of solution cavity section, continue drilling and forming hole；

Description of reference numerals: 1-waterglass, 2-plastic kettle, 3-plastic ties, 4-knitted bag, the large-scale solution cavity of 5-, 6-hole, 7- Concrete, 8-concrete pump, 9-landwaste and sillar stone, 10-churning driven, 11-intake transformation assembly, 12-karst.

Detailed description of the invention

The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.

As it is shown on figure 3, of the present utility model enforcement needs to use a kind of intake transformation assembly 11, this intake transformation group Kettle mouth colligation is cascaded and loads in netted knitted bag 4 by three plastic kettles 2 by plastic ties 3 by fit 11 to be formed, Plastic kettle 2 is filled the waterglass 1(Na2O nSiO2 of 20% concentration) (explanation: will concentration of sodium silicate 40Be, modulus is 2.4 It is diluted).

This utility model is based primarily upon following principle and realizes hole stake intake transformation:

(1) landwaste and the sillar stone 9 that produce during early stage is dug stake are backfilled to certain altitude in hole 6, and it is at karst pipe Form deposit buildup bottom road 12 or large-scale solution cavity 5, under pipeline water flow effect, hole stake periphery can be dispersed to.This process Formed and backfill closure for the first time.

(2) waterglass 1 and the cement grout generation chemical reaction in concrete 7, produce rapid hardening effect, and concrete 7 setting rate is exceedingly fast. The concrete 7 of prose style free from parallelism state can be produced cementing " in bulk " effect.Concrete 7 block has antiscour effect to pipeline water flow, and volume is more Big deposit filling effect is the best.Due in block and concrete 7 amount of flow-like is very big, rapid filling and bottom and solution cavity periphery.

The calcium hydroxide following chemical reaction of generation that waterglass and cement grout aquation separate out:

(2) broken plastic kettle 2 and knitted bag 4 accelerate in bonding process at concrete 7, due to self parcel wherein, and can be to respectively The cementing block of concrete 7 continuously forms build-in crosslinked action, advantageously forms more agglomerate body；Simultaneously because plastic kettle 2 has self Certain is irregularly shaped, can form build-in in solution cavity narrow port, slow down the loss speed of serosity.Netted knitted bag 4 also has There is similar effect.

(3) it is liquid due to waterglass 1, there is preferable mobility, plastic kettle 2 destructive process occurs earial drainage, can Solution cavity hole wall, backfill disintegrating slag and the follow-up concrete 7 pumped into are respectively provided with certain bonding solidification；Owing to waterglass 1 amount is big and stream The degree of dissipating is good, is conducive to gradually forming the concrete block of more agglomerate body.

(4) concrete 7 block formed is the biggest, and Pipeline Water effect or himself action of gravity are the biggest to its displacement difficulty, can be by Gradually in hole 6, solution cavity position and peripheral little scope thereof form huge block, and finally form closure in hole stake solution cavity section.Such as Fig. 4 Shown in.

This utility model is formed first with the landwaste backfill digging stake generation and tentatively backfills closure, then utilizes waterglass 1 Producing quick-hardening, cementing in bulk with cement grout generation chemical reaction in concrete 7, other simultaneously continued in forming with material are moulded There is physical crosslinking effect in material kettle 2 and knitted bag 4, forms solution cavity in more agglomerate body and then final plugging hole.

When this utility model is implemented, construction technology is as follows:

(1) when finding in pile foundation drilling construction, occur the concrete that pumps into as shown in Figure 5 to miss, continue to irrigate super Fang Yan In the case of Chong, prepare several plastic kettles 2 filling 20% concentration waterglass 1, by plastic ties 3 by the Hu Koukou of each plastic kettle 2 It is cascaded, and loads netted knitted bag 4, and sealing ties, form intake transformation assembly 11, as shown in Figure 3.

(2) landwaste and shiver stone 9 that first aperture is dug stake generation use churning driven 10 to be backfilled in hole, and Altitude control exists More than distance solution cavity hole 1 ~ 2m, as shown in Figure 6.

(3), when backfill chip body progressively sinks down into Upper Plate of Karst Cave position in hole, in hole, concrete 7 is pumped into by concrete pump 8, its Altitude control is at the distance above 2m in solution cavity top, as shown in Figure 7.

(4) in hole, concrete face sinks down into the above 1m in solution cavity top when highly locating, and will be equipped with the net of the plastic kettle 2 of waterglass 1 Shape knitted bag 4 puts into concrete face in hole 6, and in pumping concrete 7 to hole 6, waterglass 1 and concrete 7 occur rapid hardening, and in knitted bag 4, plastics Kettle 2 occurs cementing, and hardening forms block, as shown in Fig. 8, Figure 10.

(5) enter churning driven 10 to relevant position under, utilize churning driven 10 drill bit to be carried out vertically by intake transformation assembly 11 Smash up, and rotary drilling-head is stirred mixing simultaneously, pull out of hole after about 5 minutes, as shown in Figure 9.

(6) whether the concrete face in peephole 6 declines or directly misses；

(7) if not occurring being decreased obviously in 10 minutes, then 0.5 hour (consolidation and sclerosis according to waterglass Yu cement is waited Time determines) after can continue directly to drill this section of plugged zone, and bore toward bottom, as shown in figure 11；If slowly declining occurs in concrete face, Can continue to pump into the above 2m in solution cavity top in concrete 7 to hole 6；If being decreased obviously occurring and collapsing to solution cavity base plate, the most repeatable on State (3), (4), (5) step.

Certainly, being more than concrete exemplary applications of the present utility model, this utility model also has other embodiment, all Use the technical scheme that equivalent or equivalent transformation are formed, within all falling within the protection domain required by this utility model.

Claims (1)

1. an intake transformation structure, it is characterised in that: it is by Hu Kou by plural plastic kettle (2) plastic ties (3) Colligation is cascaded and loads the intake transformation assembly (11) formed in netted knitted bag (4), and plastic kettle is filled in (2) The waterglass (1) of 20% concentration.