CN203114299U - Long-distance horizontal reinforced construction structure capable of spraying vortically and plugging water - Google Patents

Long-distance horizontal reinforced construction structure capable of spraying vortically and plugging water Download PDF

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Publication number
CN203114299U
CN203114299U CN 201320053764 CN201320053764U CN203114299U CN 203114299 U CN203114299 U CN 203114299U CN 201320053764 CN201320053764 CN 201320053764 CN 201320053764 U CN201320053764 U CN 201320053764U CN 203114299 U CN203114299 U CN 203114299U
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CN
China
Prior art keywords
jet grouting
horizontal jet
water
spraying
vortically
Prior art date
Application number
CN 201320053764
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Chinese (zh)
Inventor
冯振鲁
王亚丽
荆永波
苏庆
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中铁十四局集团有限公司
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Application filed by 中铁十四局集团有限公司 filed Critical 中铁十四局集团有限公司
Priority to CN 201320053764 priority Critical patent/CN203114299U/en
Application granted granted Critical
Publication of CN203114299U publication Critical patent/CN203114299U/en

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Abstract

The utility model discloses a long-distance horizontal reinforced construction structure capable of spraying vortically and plugging water. Multiple horizontal rotary spaying piles are arranged on the outer periphery of an excavating contour line of a cross-section vault of a tunnel. Multiple deep holes are evenly formed in an excavating tunnel face for filling slurry. Water discharging holes are arranged in two arch angle positions respectively. The long-distance horizontal reinforced construction structure capable of spraying vortically and plugging water is mainly used for plugging water, and can reduce excavating risks, control settlement of the ground, reduce circulating times of the horizontal spraying piles, accelerate an excavating process and ensure a construction period.

Description

Greatly apart from horizontal jet grouting water reinforcement constructing structure

Technical field

The utility model relates to the construction technology on bored tunnel Fu Shui stratum, relates in particular to a kind of big apart from horizontal jet grouting water reinforcement constructing structure.

Background technology

Rotary churning pile be utilize rig with rotary jet grouting pipe and shower nozzle bore place at the bottom of design altitude, after making liquid stream obtain huge energy by high-voltage generator the slurries that prepare in advance, eject from the nozzle high speed of slip casting tube edge, form the liquid stream that one energy height is concentrated, directly destroy the soil body, in the course of injection, drilling rod promotes while rotating, slurries and the soil body are fully mixed, in soil, form the column induration of certain diameter, thereby make ground reach reinforcing.Generally be divided into two workflows in the construction, namely spray after the subdrilling, bore down again and spray, promote then and stir, guarantee every meter stake puddled soil ratio and quality.

The horizontal jet grouting stake is to carry out the churning operation in the horizontal direction, and the characteristics of horizontal jet grouting stake are: strengthening stratum, play the effect of sealing curtain, control sedimentation, protection ground surrounding building;

And similar churning water-plugging technique generally adopts along the one circle horizontal jet grouting stake of excavation outline line cloth, and face is arranged a certain amount of horizontal jet grouting stake by blossom type, once sets length less than 30 meters, and a cycle period is long, and the duration progress is slow.

The utility model content

At the problems referred to above, it is a kind of big apart from horizontal jet grouting water reinforcement constructing structure that the purpose of this utility model is to provide.

For achieving the above object, described in the utility model a kind of big apart from horizontal jet grouting water reinforcement constructing structure, in tunnel cross-section vault excavation outline line periphery a plurality of horizontal jet grouting stakes are set, on the excavation face, a plurality of deep hole groutings are set evenly, on two Gong Jiao positions, spilled water hole is set respectively.

Preferably, in tunnel cross-section hoop 158 degree scopes, a plurality of horizontal jet grouting stakes are set.

Preferably, the length of described horizontal jet grouting stake is 30m, and the stake diameter is 80mm, and pile spacing is 400-450mm, and the interlock distance is 300-400mm between adjacent two.

The beneficial effects of the utility model are:

Big main purpose apart from horizontal jet grouting water reinforcement constructing structure described in the utility model is exactly water blockoff, reduces the excavation risk, and control surface settlement reduces horizontal jet grouting stake cycle-index, accelerates the excavation progress, guarantees the duration.

Description of drawings

Fig. 1 is the described big floor map apart from horizontal jet grouting water reinforcement constructing structure of the utility model embodiment.

The specific embodiment

Below in conjunction with Figure of description the utility model is further described.

As shown in Figure 1, the utility model embodiment is described a kind of big apart from horizontal jet grouting water reinforcement constructing structure, in tunnel cross-section vault excavation outline line periphery a plurality of horizontal jet grouting stakes 1 are set, on the excavation face, a plurality of deep hole groutings 2 are set evenly, on two Gong Jiao positions, spilled water hole 3 are set respectively.

This constructing structure is auxilliary based on the horizontal jet grouting stake with deep hole grouting, and rotary churning pile combines with deep hole grouting length, and the comprehensive control measures that combines with stifled row in work progress excavation is smoothly finished, and realizes benefit.

By deep hole grouting with the front of tunnel heading soil stabilization and with the water body in the arch springing place layer of sand extrude the excavation outline line beyond; The horizontal jet grouting stake forms the curtain body beyond the excavation outline line of topping bar, have the advance support effect and can play antiseep, prevent the effect that drift sand, antiskid move, thereby guarantee that tunnel safety tunnels fast; Horizontal spilled water hole is discharged the water body beyond the rotary churning pile, reduces water body to the influence of the place ahead face.

In force, after deep hole grouting finishes, begin to apply the horizontal jet grouting stake.The horizontal jet grouting stake is arranged in excavation outer contour place, along arranging 26 of horizontal jet grouting stakes altogether in 158 ° of scopes of tunnel cross-section hoop, and the long 30m of every pile, a diameter is 800mm, and pile spacing is 400~450mm, and the mutual interlock of adjacent studs is 300~400mm.

During construction, churning pressure is not less than 35Mpa, slurries requirement water: cement is 1: 0.8~1: 1, and the bar time of moving back of every drilling rod (3m/ root) is not less than 18 minutes, and the drilling rod rotary speed is controlled at 13~15 rev/mins; It is 1.5%~2% (on the existing line gradient basis) that the pre-guide hole of horizontal jet grouting stake sets angle; The every linear meter(lin.m.) cement consumption control of single pile is at 150Kg.

More than; it only is preferred embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claim was defined.

Claims (3)

1. one kind greatly apart from horizontal jet grouting water reinforcement constructing structure, it is characterized in that, in tunnel cross-section vault excavation outline line periphery a plurality of horizontal jet grouting stakes are set, on the excavation face, a plurality of deep hole groutings are set evenly, on two Gong Jiao positions, spilled water hole is set respectively.
2. according to claim 1 it is characterized in that apart from horizontal jet grouting water reinforcement constructing structure greatly, in tunnel cross-section hoop 158 degree scopes, a plurality of horizontal jet grouting stakes are set.
3. according to claim 1 and 2ly it is characterized in that apart from horizontal jet grouting water reinforcement constructing structure the length of described horizontal jet grouting stake is 30m greatly, a stake diameter is 80mm, and pile spacing is 400-450mm, and the interlock distance is 300-400mm between adjacent two.
CN 201320053764 2013-01-31 2013-01-31 Long-distance horizontal reinforced construction structure capable of spraying vortically and plugging water CN203114299U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320053764 CN203114299U (en) 2013-01-31 2013-01-31 Long-distance horizontal reinforced construction structure capable of spraying vortically and plugging water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320053764 CN203114299U (en) 2013-01-31 2013-01-31 Long-distance horizontal reinforced construction structure capable of spraying vortically and plugging water

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Publication Number Publication Date
CN203114299U true CN203114299U (en) 2013-08-07

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104453946A (en) * 2014-11-19 2015-03-25 北京首尔工程技术有限公司 Advanced reinforcing construction method for building tunnel in soft surrounding rock
CN104695456A (en) * 2015-03-27 2015-06-10 济南轨道交通集团有限公司 Construction method novel vertical shaft horizontal rotation jet grouting pile foundation pit lateral wall water stopping curtain
CN105781557A (en) * 2016-03-25 2016-07-20 广东水电二局股份有限公司 Method for constructing underground excavated tunnel by adopting chemical grouting for sand layer consolidation
CN106801365A (en) * 2017-01-18 2017-06-06 彭峰 Existing railway line Tunnel Base sluicing anchor bolt grouting restorative procedure
CN108547639A (en) * 2018-03-13 2018-09-18 北京市政路桥股份有限公司 Tunnel closes on the advanced same more conduit delamination pour slurry construction methods in hole of existing buildings
CN110486049A (en) * 2019-08-29 2019-11-22 龙口矿业集团有限公司 A kind of rich water sandstone tunnel passing fault crushed zone comprehensive processing method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104453946A (en) * 2014-11-19 2015-03-25 北京首尔工程技术有限公司 Advanced reinforcing construction method for building tunnel in soft surrounding rock
CN104453946B (en) * 2014-11-19 2017-03-22 北京首尔工程技术有限公司 Advanced reinforcing construction method for building tunnel in soft surrounding rock
CN104695456A (en) * 2015-03-27 2015-06-10 济南轨道交通集团有限公司 Construction method novel vertical shaft horizontal rotation jet grouting pile foundation pit lateral wall water stopping curtain
CN105781557A (en) * 2016-03-25 2016-07-20 广东水电二局股份有限公司 Method for constructing underground excavated tunnel by adopting chemical grouting for sand layer consolidation
CN105781557B (en) * 2016-03-25 2018-10-02 广东水电二局股份有限公司 A kind of construction method of bored tunnel chemical grouting consolidation layer of sand
CN106801365A (en) * 2017-01-18 2017-06-06 彭峰 Existing railway line Tunnel Base sluicing anchor bolt grouting restorative procedure
CN108547639A (en) * 2018-03-13 2018-09-18 北京市政路桥股份有限公司 Tunnel closes on the advanced same more conduit delamination pour slurry construction methods in hole of existing buildings
CN108547639B (en) * 2018-03-13 2019-12-03 北京市政路桥股份有限公司 Tunnel closes on the advanced same more conduit delamination pour slurry construction methods in hole of existing buildings
CN110486049A (en) * 2019-08-29 2019-11-22 龙口矿业集团有限公司 A kind of rich water sandstone tunnel passing fault crushed zone comprehensive processing method

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