CN205260041U - Method of freezing supporting construction is spouted soon to level - Google Patents

Abstract

The utility model discloses a method of freezing supporting construction is spouted soon to level spouts to insert between the stake in adjacent level to be equipped with horizontal freezing pipe soon, through horizontal freezing pipe freeze make the soil body that adjacent level is spouted between the stake soon form a frozensoilwall. Construction principle as follows: (1 ), build the work well and receive the well, (2 ), the pile driving construction is spouted soon to the level, (3 ), horizontal freezing pipe construction between the stake is spouted soon to the level, (4 ), actively freeze, form method of freezing supporting construction is spouted soon to level, beneficial effect: the utility model discloses the freezing pipe materials significantly reduce, freeze to need cold volume also to significantly reduce, and the frozen swelling volume of sinking of melting is also very little, especially in the sealing effect, have practiced thrift the energy greatly guaranteeing to reinforce the effect to have better economic benefits, have great popularization and application and worth.

Description

A kind of horizontal jet grouting freezing process supporting construction

Technical field

The utility model relates to a kind of supporting construction, particularly a kind of horizontal jet grouting freezing process supporting construction.

Background technology

At present, along with the acceleration of Urbanization Process In China, under downtown roads or important building, build large-scaleUnderground structure is more and more. For the large section of shallow embedding, short-range city tunnel, adopt shield method to executeWork is uneconomical, adopts cut and cover method to disturb larger to city productive life. When geological conditions is poor, buried depthWhen Sensitive Buildings is arranged at more shallow, top, if adopt shallow burial hidden digging construction, surface subsidence is difficult to control, and oneThere is construction accident in the dawn, will cause significant social influence. Therefore, how to find one to be suitable for saturated richnessThe constructing structure of wearing Sensitive Buildings under the shallow large-section underground structure of water soft soil layer is extremely important.

Horizontal jet grouting stake method is taking high-pressure pump as power source, prepares by horizontal drill drilling rod, nozzle handleSlurries are ejected in the soil body, and injection stream is penetrated the soil body in certain limit to wear with huge energy, and at nozzleCutting soil when making slow circumvolve and advance and retreat, forces a soil position to be mixed with slurry agitation. Treat that slurries solidifyAfter, forming horizontal circle column soil cement induration is horizontal jet grouting stake, can significantly improve the soil body intensity andArchitectural characteristic, when after the mutual interlock of rotary churning pile, just forms sealing with concentric circles form at tunnel vault and peripheryHorizontal jet grouting curtain body, play anti-quicksand, antiskid move, impermeable, anti-collapse and prevent because of tunnel excavationAnd make the effect of the ground settlement that the excessive dehydration in stratum causes.

Freezing process is to utilize artificial cooling technology, makes the water freezing in stratum, and natural ground is become to frozen soil,Increase its strength and stability, completely cut off contacting of underground water and underground engineering, so that under the protection of frost wallCarry out the special construction technology of underground engineering construction, its essence is and utilize artificial cooling Iterim Change rock and soil propertiesWith strengthening stratum. Artificial Soil freezing process, can be effective owing to not substantially being subject to the restriction of supporting scope and the supporting degree of depthPrevent the distortion of adjacent upper body during excavate in water burst and city, Drilling is constructed and be subject to increasing attention,Become one of technical way of underground engineering.

Summary of the invention

The purpose of this utility model is in order to solve shallow large-section underground structure in saturated rich water soft soil layerUnder wear the problem of Sensitive Buildings and a kind of horizontal jet grouting freezing process supporting construction of providing.

The horizontal jet grouting freezing process supporting construction that the utility model provides is to insert between adjacent horizontal jet grouting stakeBe provided with horizontal frozen pipe, by horizontal frozen pipe freeze make the soil body between adjacent level rotary churning pile form oneFrozen Soil Cylinder.

Construction Principle is as described below:

(1), construct active well and received well;

(2), horizontal jet grouting pile driving construction;

(3), horizontal frozen pipe construction between horizontal jet grouting stake, the number of horizontal frozen pipe is by the level designingRotary churning pile spacing and determining;

(4), actively freeze formation horizontal jet grouting freezing process supporting construction;

(5), in horizontal jet grouting freezing process supporting construction, excavate excavation limit, limit support (or employing box culvertJacking scheme performs internal structure);

(6) construct, piecemeal internal structure, and progressively remove horizontal jet grouting freezing process supporting construction inner support,The complete underground structure of final formation.

The beneficial effects of the utility model:

The utility model is that horizontal jet grouting stake support form and horizontal frozen support form are combined, and formsLarge rigidity watertightness horizontal jet grouting freezing process supporting construction, can effectively control the loss of underground water, ensures to executeWork and operation security, be particularly suitable as under the shallow large-section underground structure of saturated rich water soft soil layer, wear quickThe supporting construction of sense when construction, also can be applied to the soil stabilization of shield structure turnover termination, hole. If incite somebody to action thisUtility model supporting construction is vertically arranged, also can be applicable to the building enclosure of base pit engineering, and ground processingIn engineering. Compared with traditional horizontal freezing, the utility model freezing pipe materials greatly reduce, and freezing needsCold also greatly reduces, and frozen swell and melt settlement amount is also very little, ensureing that consolidation effect is particularly in stagnant water effect,Greatly save the energy, thereby there is good economic benefit, there is larger application value.

Brief description of the drawings

Fig. 1 is the utility model section structure schematic diagram.

1, horizontal jet grouting stake 2, horizontal frozen pipe 3, Frozen Soil Cylinder.

Detailed description of the invention

Refer to shown in Fig. 1:

The horizontal jet grouting freezing process supporting construction that the utility model provides is between adjacent horizontal jet grouting stake 1Be inserted with horizontal frozen pipe 2, freeze to make the soil body between adjacent level rotary churning pile 1 by horizontal frozen pipe 2Form a Frozen Soil Cylinder 3.

Construction Principle is as described below:

(1), construct active well and received well;

(2), horizontal jet grouting stake 1 is constructed;

(3), horizontal frozen pipe 2 is constructed between horizontal jet grouting stake 1, the number of horizontal frozen pipe 2 is by designingHorizontal jet grouting stake 1 spacing and determine;

(4), actively freeze formation horizontal jet grouting freezing process supporting construction;

(5), in horizontal jet grouting freezing process supporting construction, excavate excavation limit, limit support (or employing box culvertJacking scheme performs internal structure);

(6) construct, piecemeal internal structure, and progressively remove horizontal jet grouting freezing process supporting construction inner support,The complete underground structure of final formation.

Claims (1)

1. a horizontal jet grouting freezing process supporting construction, is characterized in that: be adjacent horizontal jet grouting stake itBetween be inserted with horizontal frozen pipe, freeze to make the soil body shape between adjacent level rotary churning pile by horizontal frozen pipeBecome a Frozen Soil Cylinder.