CN103711504A - Propelling method for combined portion between shield tunnel segment and mine tunnel segment in subway tunnel - Google Patents
Propelling method for combined portion between shield tunnel segment and mine tunnel segment in subway tunnel Download PDFInfo
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- CN103711504A CN103711504A CN201310699942.9A CN201310699942A CN103711504A CN 103711504 A CN103711504 A CN 103711504A CN 201310699942 A CN201310699942 A CN 201310699942A CN 103711504 A CN103711504 A CN 103711504A
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Abstract
Provided is a propelling method for a combined portion between a shield tunnel segment and a mine tunnel segment in a subway tunnel. The propelling method includes the first step that a steel sleeve is horizontally struck into the surrounding rock in front of a tunnel face of the mine tunnel segment after construction of the mine tunnel segment is finished, and then a shotcrete support is applied on the tunnel face; the second step that glass fiber ribs of separation end walls are bound tightly close to the shotcrete support, the glass fiber ribs and steel bars for ring beams behind the glass fiber ribs are connected in a bound mode, next the steel bars for the ring beams are connected with reserved steel bar heads of a primary support of the mine tunnel segment in a welded mode, and then the separation end walls and the ring beams are poured; the third step that an arc-shaped concrete guiding platform is poured at the bottom of the mine tunnel segment; the fourth step that when a shield tunneling machine approaches to the mine tunnel segment, the propelling speed is lowered, the shield tunneling machine is accommodated in the steel sleeve, and then the shield tunneling machine is used for directly cutting and removing the surrounding rock in the steel sleeve, the shotcrete support of the tunnel face and the separation end walls and carrying out grouting and slag removing until the shield tunneling machine passes through the ring beams and is accommodated on the arc-shaped concrete guiding platform. According to the propelling method, construction risks are low, construction is easy, efficiency is high and the cost is low.
Description
Technical field
The present invention relates to the propulsion method of shield tunnel section and mining tunnel section binding site in a kind of subway tunnel.
Background technology
When building at present subway tunnel and encountering long-distance hard rock stratum, adopt shield driving to have the shortcomings such as the slow and tool wear of fltting speed is fast.Therefore, often first adopt Mining Method to carry out hard rock tunnel excavation and form mining tunnel section, when then shield machine is advanced into shield tunnel section and mining tunnel section binding site, first abolishes separation termination wall and make shield machine enter mining tunnel section, realize the perforation of shield tunnel section and mining tunnel section.
Because mining tunnel section will complete prior to longer a period of time of shield tunnel section, therefore, the face of mining tunnel section for a long time exposure can make its stability variation gradually, only by being performed to simple gunite, face is not enough to the stability that guarantees that face is long-term, after shield machine arrives and while being advanced into front of tunnel heading, the powerful thrust of shield machine makes face be very easy to total collapse occurs, and causes near the soil layer unstability of face.Unstability post-processing difficulty is large, increases and builds cost and construction risk.
In order to guarantee the resistance to overturning of face, traditional way is that together with performing with the binding site of mining tunnel section in shield tunnel section, steelframe mixes earth termination wall, before shield machine arrives, first manually abolishes this termination wall, and then shield driving passes through binding site.This method has higher risk in construction, especially at artificial chisel, reach maximum except the process risk of termination wall: termination wall construction prop up shelves its soil body behind, once abolish this termination wall, the soil body will expose, mechanical balance state between stratum and a mark structure is broken, and the soil body easily occurs simultaneously under the powerful thrust of shield machine and cave in, and causes subsidence, personnel casualty accidents even occurs, and is important risk factors in shield-tunneling construction.
Because shield machine is by after binding site, shield machine fuselage is led the arc that docks and enter in mining tunnel with mining tunnel section on platform, now between shield driving route and Tunnel Design axis, allowable variation error rate is low, existing construction method to the control of shield driving deviation require high, difficulty is large, need to repeatedly adjust, have that constructional difficulties, time-consuming length, efficiency are low, high in cost of production shortcoming.
Summary of the invention
The propulsion method that the object of this invention is to provide shield tunnel section and mining tunnel section binding site in a kind of subway tunnel, by the method, construct, the soil body of shield tunnel section and mining tunnel section binding site is difficult for unstability, and construction risk is low, and construction is simple, efficiency is high, cost is low.
It is that in a kind of subway tunnel, the propulsion method of shield tunnel section and mining tunnel section binding site, the steps include: that the present invention realizes the technical scheme that its goal of the invention adopts
In subway tunnel, a propulsion method for shield tunnel section and mining tunnel section binding site, the steps include:
A, the first complete mining tunnel section of constructing, then in mining tunnel section front of tunnel heading country rock, level is squeezed into circular steel bushing, and the rear end face of steel bushing flushes with face, then face is performed to gunite;
B, be close to the glass fiber muscle that termination wall is separated in gunite colligation, and glass fiber muscle is connected with reinforcing bar binding with the ring beam after it, ring beam is welded to connect with the reserved steel bar end of the preliminary bracing of mining tunnel section again with reinforcing bar; Build again and separate termination wall and ring beam;
C, in mining tunnel section bottom, build mixed earth arc and lead platform;
When the shield machine of D, shield tunnel section approaches mining tunnel section, reduce fltting speed, be accommodated among steel bushing; Then, shield machine keeps low-speed propulsion, directly to the gunite of the country rock in steel bushing, face with separate termination wall and cut and abolish, carry out slip casting, scarfing cinder simultaneously, until the arc that shield machine is all received in mining tunnel section by ring beam mixes earth, lead on platform.
Compared with prior art, the beneficial effect of tool of the present invention is:
One, the glass fiber muscle adopting in the present invention replaces traditional reinforcing bar to build and separates termination wall,, the feature such as modulus of elasticity little, ductility lower, easy brittle failure little with the binding strength of mixed earth that glass fiber muscle has on the one hand, easy fracture under the effect of cutting of shield cutter, thereby can adopt shield machine directly termination wall to be cut propelling and removes termination wall without artificial chisel, reduced artificial chisel except the construction risk in the wall process of termination, accelerated construction speed simultaneously, reduced construction cost; On the other hand, glass fiber muscle have again that tensile strength is high, supporting capacity is large, impact resistance is good etc. feature, and glass fiber muscle is connected with the reinforcing bar of mining tunnel section by the reinforcing bar of ring beam, thereby separate termination wall and can guarantee the resistance to overturning of face before being cut, the part staying after being cut also has higher tensile strength simultaneously, self stability is good, also can guarantee not unstability of surrounding soil, and its construction risk is little.
Two, the binding site shield machine of two tunnel construction sections advances in steel bushing and ring beam, by the location of steel bushing and ring beam, can guarantee that shield machine is when cutting smoothly binding site country rock and separating termination wall, the arc that can be advanced to accurately in mining tunnel is led on platform, avoided the deviation of shield driving direction, reduce difficulty of construction, also improved the drivage efficiency in tunnel, reduced construction cost.
Three, the steel bushing that the binding site of two tunnel construction sections is squeezed into can provide larger support action to country rock around, disturbance to country rock while having reduced shield machine driving, and without this position country rock being carried out to grouting and reinforcing, also reduced construction sequence, improved efficiency of construction.
As the further improvement of technique scheme, in above-mentioned separation termination wall body of wall, glass fiber muscle district diameter is greater than the external diameter of steel bushing.
Like this, the remainder of separating after the wall cutting of termination remains with enough glass fiber muscle being connected with ring beam reinforcing bar and mining tunnel section supporting reinforcing bar, and the separation termination wall after further assurance cutting is unstability not, and construction risk is little.
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the longitudinal section schematic diagram of subway tunnel when shield machine has just been accommodated among steel bushing in the embodiment of the present invention.
Fig. 2 is A-A schematic cross-sectional view in Fig. 1.
Fig. 3 is the enlarged drawing at B place in Fig. 1.
The specific embodiment
Fig. 1-3 illustrate, and one embodiment of the present invention are that in a kind of subway tunnel, the propulsion method of shield tunnel section and mining tunnel section binding site, the steps include:
In subway tunnel, a propulsion method for shield tunnel section and mining tunnel section binding site, the steps include:
A, the first complete mining tunnel section 21 of constructing, then in mining tunnel section 21 face 21a the place ahead country rocks, level is squeezed into circular steel bushing 31, and the rear end face of steel bushing 31 flushes with face 21a, then face 21a is performed to gunite;
B, be close to the glass fiber muscle 34 that termination wall is separated in gunite colligation, and glass fiber muscle 34 is connected with reinforcing bar 35 colligations with the ring beam after it, ring beam is welded to connect with the reserved steel bar end 36 of the preliminary bracing 22 of mining tunnel section 21 again with reinforcing bar 35; Build again and separate termination wall 32 and ring beam 33;
C, in mining tunnel section 21 bottoms, build mixed earth arc and lead platform 23;
When the shield machine 12 of D, shield tunnel section 11 approaches mining tunnel section 21, reduce fltting speed, be accommodated among steel bushing 31; Then, shield machine 12 keeps low-speed propulsion, directly to the gunite of the country rock in steel bushing 31, face with separate termination wall 32 and cut and abolish, carry out slip casting, scarfing cinder, until the mixed earth of arc that shield machine 12 is all received in mining tunnel section 21 by ring beam 33 is led on platform 23 simultaneously.
In separation termination wall 32 bodies of wall of this example, glass fiber muscle district diameter is greater than the external diameter of steel bushing.
Claims (2)
1. a propulsion method for shield tunnel section and mining tunnel section binding site in subway tunnel, the steps include:
A, the first complete mining tunnel section (21) of constructing, then in the country rock of mining tunnel section (21) face (21a) the place ahead, level is squeezed into circular steel bushing (31), the rear end face of steel bushing (31) flushes with face (21a), then face (21a) is performed to gunite;
B, be close to the glass fiber muscle (34) that termination wall is separated in gunite colligation, and glass fiber muscle (34) is connected with reinforcing bar for ring beam (35) colligation after it, reinforcing bar for ring beam (35) is welded to connect with the reserved steel bar end (36) of the preliminary bracing (22) of mining tunnel section (21) again; Build again and separate termination wall (32) and ring beam (33);
C, in mining tunnel section (21) bottom, build mixed earth arc and lead platform (23);
When the shield machine (12) of D, shield tunnel section (11) approaches mining tunnel section (21), reduce fltting speed, be accommodated among steel bushing (31); Then, shield machine (12) keeps low-speed propulsion, directly to the gunite of the country rock in steel bushing (31), face with separate termination wall (32) and cut and abolish, carry out slip casting, scarfing cinder, until the mixed earth of arc that shield machine (12) is all received in mining tunnel section (21) by ring beam (33) is led on platform (23) simultaneously.
2. the propulsion method of shield tunnel section and mining tunnel section binding site in subway tunnel according to claim 1, is characterized in that: in described separation termination wall (32) body of wall, the diameter in glass fiber muscle (34) region is greater than the external diameter of steel bushing (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310699942.9A CN103711504B (en) | 2013-12-18 | 2013-12-18 | The propulsion method of shield tunnel section and mining tunnel section binding site in subway tunnel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310699942.9A CN103711504B (en) | 2013-12-18 | 2013-12-18 | The propulsion method of shield tunnel section and mining tunnel section binding site in subway tunnel |
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| Publication Number | Publication Date |
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| CN103711504A true CN103711504A (en) | 2014-04-09 |
| CN103711504B CN103711504B (en) | 2016-02-03 |
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| CN201310699942.9A Expired - Fee Related CN103711504B (en) | 2013-12-18 | 2013-12-18 | The propulsion method of shield tunnel section and mining tunnel section binding site in subway tunnel |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863651A (en) * | 2016-05-30 | 2016-08-17 | 中铁工程装备集团有限公司 | Tunnel construction method with shield methodand new Austrian tunneling method being combined |
| CN106285691A (en) * | 2016-08-05 | 2017-01-04 | 中铁工程装备集团有限公司 | The method for tunnel construction that a kind of shield formula multi-arm development machine combines with New Austrian Tunneling Method |
| CN106907164A (en) * | 2017-03-27 | 2017-06-30 | 中铁隧道勘测设计院有限公司 | A kind of water-bed combination of mine shield tunnel docking structure form and its construction method |
| CN107091101A (en) * | 2017-03-27 | 2017-08-25 | 中铁隧道勘测设计院有限公司 | Mine shield handing-over tunnel folded type joint design and construction method in the middle part of marine site |
| CN109026043A (en) * | 2018-09-18 | 2018-12-18 | 中铁第六勘察设计院集团有限公司 | A kind of long range submerged tunnel mine shield dynamic lays pattern and method from joint |
| CN109505612A (en) * | 2018-12-21 | 2019-03-22 | 中铁二十五局集团第五工程有限公司 | Big descending bored tunnel shield sky selection structure and construction technology |
| CN110080296A (en) * | 2019-04-29 | 2019-08-02 | 中铁四局集团有限公司 | A kind of unilateral glass muscle-reinforcement cage structure for tunnel shielding portal ground-connecting-wall |
| CN110159291A (en) * | 2019-05-06 | 2019-08-23 | 广州电力设计院有限公司 | Method for tunnel construction and tunnel structure |
| CN110792457A (en) * | 2019-10-12 | 2020-02-14 | 成都建工路桥建设有限公司 | Tunnel portal structure installation method for shield tunneling through mine tunnel |
| CN110905527A (en) * | 2019-12-11 | 2020-03-24 | 中铁二十局集团第四工程有限公司 | Construction method of tunnel with upper soft and lower hard strata |
| CN112901176A (en) * | 2020-12-24 | 2021-06-04 | 南昌轨道交通集团有限公司 | Shield tunneling machine passing method capable of reducing disturbance |
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| BE1029262B1 (en) * | 2022-06-24 | 2023-07-25 | China 19Th Metallurgical Group Co Ltd | Construction method of tunnel passage section by shield method and mine method |
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| JPH1072995A (en) * | 1996-08-30 | 1998-03-17 | Taisei Corp | Construction method for branch tunnel and structure of main track tunnel branch part |
| CN101403307A (en) * | 2008-08-04 | 2009-04-08 | 中铁十一局集团城市轨道工程有限公司 | Construction method of composite soil pressure balance tunnel shielding machine for traversing shallow-buried water-rich sand layer |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863651B (en) * | 2016-05-30 | 2018-06-22 | 中铁工程装备集团有限公司 | The method for tunnel construction that a kind of shield is combined with New Austrian Tunneling Method |
| CN105863651A (en) * | 2016-05-30 | 2016-08-17 | 中铁工程装备集团有限公司 | Tunnel construction method with shield methodand new Austrian tunneling method being combined |
| CN106285691A (en) * | 2016-08-05 | 2017-01-04 | 中铁工程装备集团有限公司 | The method for tunnel construction that a kind of shield formula multi-arm development machine combines with New Austrian Tunneling Method |
| CN106285691B (en) * | 2016-08-05 | 2018-08-03 | 中铁工程装备集团有限公司 | A kind of method for tunnel construction that shield formula multi-arm development machine is combined with New Austrian Tunneling Method |
| CN107091101B (en) * | 2017-03-27 | 2023-09-01 | 中铁第六勘察设计院集团有限公司 | Superimposed joint structure of middle mine shield junction tunnel in sea area and construction method |
| CN106907164A (en) * | 2017-03-27 | 2017-06-30 | 中铁隧道勘测设计院有限公司 | A kind of water-bed combination of mine shield tunnel docking structure form and its construction method |
| CN107091101A (en) * | 2017-03-27 | 2017-08-25 | 中铁隧道勘测设计院有限公司 | Mine shield handing-over tunnel folded type joint design and construction method in the middle part of marine site |
| CN109026043A (en) * | 2018-09-18 | 2018-12-18 | 中铁第六勘察设计院集团有限公司 | A kind of long range submerged tunnel mine shield dynamic lays pattern and method from joint |
| CN109026043B (en) * | 2018-09-18 | 2023-11-10 | 中铁第六勘察设计院集团有限公司 | Dynamic self-joint laying type and method for long-distance underwater tunnel mine shield |
| CN109505612A (en) * | 2018-12-21 | 2019-03-22 | 中铁二十五局集团第五工程有限公司 | Big descending bored tunnel shield sky selection structure and construction technology |
| CN110080296A (en) * | 2019-04-29 | 2019-08-02 | 中铁四局集团有限公司 | A kind of unilateral glass muscle-reinforcement cage structure for tunnel shielding portal ground-connecting-wall |
| CN110080296B (en) * | 2019-04-29 | 2021-02-02 | 中铁四局集团有限公司 | A unilateral glass muscle-steel reinforcement cage structure for shield tunnel portal ground is wall even |
| CN110159291A (en) * | 2019-05-06 | 2019-08-23 | 广州电力设计院有限公司 | Method for tunnel construction and tunnel structure |
| CN110792457A (en) * | 2019-10-12 | 2020-02-14 | 成都建工路桥建设有限公司 | Tunnel portal structure installation method for shield tunneling through mine tunnel |
| CN110905527A (en) * | 2019-12-11 | 2020-03-24 | 中铁二十局集团第四工程有限公司 | Construction method of tunnel with upper soft and lower hard strata |
| CN110905527B (en) * | 2019-12-11 | 2021-09-03 | 中铁二十局集团第四工程有限公司 | Construction method of tunnel with upper soft and lower hard strata |
| CN112901176A (en) * | 2020-12-24 | 2021-06-04 | 南昌轨道交通集团有限公司 | Shield tunneling machine passing method capable of reducing disturbance |
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| CN103711504B (en) | 2016-02-03 |
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Granted publication date: 20160203 Termination date: 20181218 |