CN103590836A - Method for processing tunnel collapse caused by shallow-buried excavation - Google Patents

Method for processing tunnel collapse caused by shallow-buried excavation Download PDF

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Publication number
CN103590836A
CN103590836A CN201310602710.7A CN201310602710A CN103590836A CN 103590836 A CN103590836 A CN 103590836A CN 201310602710 A CN201310602710 A CN 201310602710A CN 103590836 A CN103590836 A CN 103590836A
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China
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construction
excavation
tunnel
line
lining
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CN201310602710.7A
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CN103590836B (en
Inventor
裴利华
林东
杨均
陈星�
曾新平
乐师军
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SW survey and Design Co., Ltd.
China Railway Siyuan Survey and Design Group Co Ltd
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China Railway Siyuan Survey and Design Group Co Ltd
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Abstract

The invention relates to a method for processing tunnel collapse caused by shallow-buried excavation. The method comprises the first step of clearing soil bodies at the collapse part to a primary excavation line, the second step of carrying out secondary excavation according to the borderline of a secondary excavation line, constructing arch foot channel steel underboardings and upper half primary supports and then backfilling a vault to a soil body backfilling line, the third step of carrying out inside-tunnel construction by adopting the benching stepping method, the fourth step of constructing lower half primary supports and closing the lower half primary supports into rings by adopting the alternative bay method, and the fifth step of carrying out secondary lining construction on inverted arches at the bottom of a tunnel and then carrying out secondary lining construction on the upper portion of the tunnel by adopting lining trolleys. Through the combination of design construction and construction steps of the design construction, the method for processing the tunnel collapse caused by the shallow-buried excavation is completed. Therefore, the good effects that engineering investments are saved, and the construction period of the tunnel and safety in construction are guaranteed are achieved.

Description

A kind of shallow buried covered excavation Tunnel Landslide processing method
Technical field
The present invention relates to building engineering field, espespecially a kind of shallow buried covered excavation Tunnel Landslide processing method.
Background technology
At present, the safety problem feature of shallow buried covered excavation Tunnel Landslide causes that industry notes, for guaranteeing engineering safety, generally adopts cut and cover method to construct, as simple in site condition, can select the slope excavation method of putting that construction costs is saved most to construct; But in site condition, be subject in limited time, need to select diaphragm wall, bored pile etc. vertically to go along with sb. to guard him according to the buried depth of construction of tunnel, add the construction of inner supporting structure pattern, this constructure scheme construction costs is high, the duration is also difficult to guarantee.
Summary of the invention
For solving the problems of the technologies described above, main purpose of the present invention is a kind of shallow buried covered excavation Tunnel Landslide processing method.
For reaching above-mentioned purpose, the right technical scheme of the present invention is: a kind of shallow buried covered excavation Tunnel Landslide processing method, and the step that the method comprises: the one, remove landslide place soil body excavation line position extremely first; The 2nd, according to the boundary line of excavation line again again excavate and construct arch springing channel-section steel backing plate and first half preliminary bracing, carry out afterwards vault and be backfilled to soil body backfill line; The 3rd, adopt benching tunnelling method to carry out in-cavity construction; The 4th, construction Lower Half preliminary bracing also adopts and jumps storehouse method and make it to seal into ring, and five are bottom inverted arch Second Lining Construction, then adopts lining trolley construction top secondary lining.
In this programme, preferably, described arch springing channel-section steel backing plate further comprises with supporting shaped steel and is woven into netted laying step.
In this programme, preferably, described benching tunnelling method is step excavation method, is design section to be divided to the step of first section and lower half section excavation.
In this programme, preferably, described jumping storehouse method is the step of constructing in the mode of partition programming, spacer block construction, placement layer by layer, global formation.
In this programme, preferably, described face is the work plane that can push ahead over against constructor.
Compared with prior art, its useful effect is in the present invention: in limited situation, both guaranteed the enforcement safety of engineering on construction ground, and reduced again construction costs, and saved construction investment.In addition, adopt liner structure form of fracture both to guarantee that liner structure can bear the effect of water and soil load and other imposed load, reduce as far as possible again structure section size and reduce liner structure arrangement of reinforcement, equally also saved construction costs.
Accompanying drawing explanation
Fig. 1 is that the first half preliminary bracing of the present embodiment tunnel applies schematic diagram
Fig. 2 is that the first half backfill of the present embodiment tunnel applies schematic diagram
Fig. 3 is that Lower Half preliminary bracing of the present invention applies schematic diagram
Fig. 4 is that Tunnel Second Lining of the present invention applies schematic diagram
Fig. 5 is first half preliminary bracing floor map of the present invention
As shown in Fig. 1~5,1-is excavation line first, and 2-is excavation line again, 3-preliminary bracing, 4-arch chamfered groove billet, the 5-core soil body, 6-supporting shaped steel, 7-soil body backfill line, 8-bottom secondary lining, 9-top secondary lining.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Refer to Fig. 1 also in conjunction with consulting shown in Fig. 2 to Fig. 5, a kind of shallow buried covered excavation Tunnel Landslide processing method of the present invention, the step comprising is:
The first step, removes landslide place soil body excavation line 1 position extremely first;
Second step, according to the boundary line of excavation line 2 again again excavating, and construct arch springing channel-section steel backing plate 4 and first half preliminary bracing 3, after district to be caved in first half preliminary bracing 3 constructions, carry out vault backfill, be backfilled to soil body backfill line 7, described arch springing channel-section steel backing plate 4 is woven into netted laying with supporting shaped steel 6;
The 3rd step, adopt benching tunnelling method to carry out in-cavity construction, described benching tunnelling method is that one of job practices of tunnel and underground construction has again dividing of positive benching tunnelling method and negative benching tunnelling method, by step length, there is three kinds, bucket step, short step and ultrashort step, due to the design of large cross-section tunnel, have again the interim inverted arch method of three steps, remaining core soil in advance body 5 benching tunnelling methods, even many benching tunnelling methods, because benching tunnelling method is not the design main points of the present embodiment, are not described in detail at this;
The 4th step, construction Lower Half preliminary bracing 3, this Lower Half preliminary bracing 3 adopts jumping storehouse method to carry out, and makes it to seal into ring.Described jumping storehouse method is to take full advantage of concrete performance during 5 ~ 10 days not yet stablize and thoroughly do not solidify front easily by internal stresses release " resist and put " characteristic principle out, it is that structure foundation or large-area concrete plane mechanism are divided into several regions, according to the principle construction of " partition programming, spacer block construction, placement layer by layer, global formation ", its pattern is the same with Chinese checkers, every one section, waters one section.The adjacent two spacer segment times are no less than seven days, and to avoid the fierce temperature difference of concrete construction initial stage part and desiccation, such practice can not stayed ater-casting.Owing to jumping storehouse method, be industry term, at this, be not also described in detail;
The 5th step, 8 constructions of bottom secondary lining, when preliminary bracing 3 is sealed into ring and closes on face, with lining trolley construction top secondary lining 9, described face is a term in tunnel construction, excavates the work plane that constantly push ahead in tunnel (or in construction of tunnel), also can be called Zhang face, it is a fixing face not, and excavation face has face, abutment wall face and vault face, is exactly that work plane of constantly pushing ahead over against constructor.
By the shallow buried covered excavation Tunnel Landslide processing method of above-mentioned construction sequence, can effectively save construction investment, also duration and construction safety have been obtained to guarantee.
In sum, only, for the present invention's preferred embodiment, with this, do not limit protection scope of the present invention, all equivalences of doing according to the scope of the claims of the present invention and description change and modify, within being all the scope that patent of the present invention contains.

Claims (5)

1. a shallow buried covered excavation Tunnel Landslide processing method, is characterized in that, the method comprises:
Step 1: remove landslide place soil body excavation line position extremely first;
Step 2: according to the boundary line of excavation line again again excavate and construct arch springing channel-section steel backing plate and first half preliminary bracing, carry out afterwards vault and be backfilled to soil body backfill line;
Step 3: adopt benching tunnelling method to carry out in-cavity construction;
Step 4: construction Lower Half preliminary bracing also adopts jumping storehouse method to make it to seal into ring, and
Step 5: bottom inverted arch Second Lining Construction, then adopts lining trolley construction top secondary lining.
2. shallow buried covered excavation Tunnel Landslide processing method as claimed in claim 1, is characterized in that, described arch springing channel-section steel backing plate further comprises with supporting shaped steel and is woven into netted laying step.
3. shallow buried covered excavation Tunnel Landslide processing method as claimed in claim 1, is characterized in that, described benching tunnelling method is step excavation method, is design section to be divided to the step of first section and lower half section excavation.
4. shallow buried covered excavation Tunnel Landslide processing method as claimed in claim 1, is characterized in that, described jumping storehouse method is the step of constructing in the mode of partition programming, spacer block construction, placement layer by layer, global formation.
5. shallow buried covered excavation Tunnel Landslide processing method as claimed in claim 1, is characterized in that, described face is the work plane that can push ahead over against constructor.
CN201310602710.7A 2013-11-26 2013-11-26 Method for processing tunnel collapse caused by shallow-buried excavation Active CN103590836B (en)

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Cited By (9)

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Publication number Priority date Publication date Assignee Title
CN104060999A (en) * 2014-03-03 2014-09-24 中国水电顾问集团贵阳勘测设计研究院有限公司 Method and structure for treating tunnel collapse
CN104389612A (en) * 2014-11-21 2015-03-04 中南大学 Treatment method for tunnel local collapse
CN105041333A (en) * 2015-07-13 2015-11-11 中铁十九局集团第二工程有限公司 Method for treating tunnel collapse through dugand covered method
CN105401954A (en) * 2015-10-23 2016-03-16 中电建路桥集团有限公司 Tunnel anti-expansion support design method
CN105909262A (en) * 2016-05-12 2016-08-31 中国五冶集团有限公司 Subsurface tunnel driving method
CN106761771A (en) * 2016-11-22 2017-05-31 宁波市交通规划设计研究院有限公司 A kind of construction method for crossing native shallow tunnel on rock under the location of mountain valley
CN107503754A (en) * 2017-06-26 2017-12-22 中铁十二局集团有限公司 A kind of construction method of VI grade of country rock rich water Shallow tunnel with large cross-section
CN109854255A (en) * 2018-11-30 2019-06-07 中国电建集团成都勘测设计研究院有限公司 The processing method of type landslide is not restrained in tunnel
CN112983439A (en) * 2021-03-16 2021-06-18 北京市市政工程研究院 Construction passing method for tunnel collapse section

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104060999A (en) * 2014-03-03 2014-09-24 中国水电顾问集团贵阳勘测设计研究院有限公司 Method and structure for treating tunnel collapse
CN104389612A (en) * 2014-11-21 2015-03-04 中南大学 Treatment method for tunnel local collapse
CN105041333A (en) * 2015-07-13 2015-11-11 中铁十九局集团第二工程有限公司 Method for treating tunnel collapse through dugand covered method
CN105401954A (en) * 2015-10-23 2016-03-16 中电建路桥集团有限公司 Tunnel anti-expansion support design method
CN105401954B (en) * 2015-10-23 2017-05-10 中电建路桥集团有限公司 Tunnel anti-expansion support design method
CN105909262A (en) * 2016-05-12 2016-08-31 中国五冶集团有限公司 Subsurface tunnel driving method
CN105909262B (en) * 2016-05-12 2019-06-18 中国五冶集团有限公司 A kind of bored tunnel driving method
CN106761771A (en) * 2016-11-22 2017-05-31 宁波市交通规划设计研究院有限公司 A kind of construction method for crossing native shallow tunnel on rock under the location of mountain valley
CN107503754A (en) * 2017-06-26 2017-12-22 中铁十二局集团有限公司 A kind of construction method of VI grade of country rock rich water Shallow tunnel with large cross-section
CN109854255A (en) * 2018-11-30 2019-06-07 中国电建集团成都勘测设计研究院有限公司 The processing method of type landslide is not restrained in tunnel
CN109854255B (en) * 2018-11-30 2020-06-30 中国电建集团成都勘测设计研究院有限公司 Method for processing tunnel unconverged collapse
CN112983439A (en) * 2021-03-16 2021-06-18 北京市市政工程研究院 Construction passing method for tunnel collapse section

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