CN104018846A - Hydraulic tunnel structure spanning large-scale active fault zone - Google Patents

Hydraulic tunnel structure spanning large-scale active fault zone Download PDF

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Publication number
CN104018846A
CN104018846A CN201410225915.2A CN201410225915A CN104018846A CN 104018846 A CN104018846 A CN 104018846A CN 201410225915 A CN201410225915 A CN 201410225915A CN 104018846 A CN104018846 A CN 104018846A
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China
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tunnel
lining
active fault
spanning
layer
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CN201410225915.2A
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CN104018846B (en
Inventor
陈海坤
杨家修
赵继勇
李晓彬
魏勇
何俊
罗玉霞
任兴普
李清石
李刚
何建峰
秦晓亮
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China Hydropower Consulting Group Guiyang Survey and Design Institute
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China Hydropower Consulting Group Guiyang Survey and Design Institute
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Abstract

The invention relates to a hydraulic tunnel structure spanning a large-scale active fault zone and belongs to the technical field of water conservancy and hydropower application. According to the technical scheme, the hydraulic tunnel structure comprises an active fault spanning section, a buried type steel penstock section with two connected ends and an overhaul tunnel communicated with the active fault spanning section in the longitudinal direction of a tunnel, a combined type lining structure is adopted in the active fault spanning section, the active fault spanning section is composed of an outer layer structure and an inner layer structure in the radial direction of the tunnel, the outer layer structure comprises a one-stage annular support and a one-stage annular lining on the outer side in the radial direction, the one-stage annular support and the one-stage annular lining are of reinforced concrete lining structures, and the inner layer structure comprises a combined lining structure with steel pipes and corrugate telescopic joints, wherein the steel pipes and the corrugate telescopic joints are connected in series alternatively. The hydraulic tunnel structure spanning the large-scale active fault zone is safe and convenient to construct, has the good seismic capacity and the capacity for resisting large-scale fault creep diastrophism damage and is high in safety.

Description

A kind of hydraulic tunnel structure of crossing over large-scale activity fault zone
Technical field
The present invention relates to a kind of hydraulic tunnel structure of crossing over large-scale activity fault zone, belong to water conservancy and hydropower applied technical field.
Background technology
In the last few years, due to the motion of some larger active faults, cause occurring larger earthquake in the neighbourhood, caused destruction and the loss of engineering works.In Hydraulic and Hydro-Power Engineering, for the hydraulic tunnel requiring to meet generating and irrigation water delivery etc., if meet tomography, first should take to dodge the measure of detouring; If in the time of must passing through active fault because of Decision Making of Line Schemes restriction, if hydraulic tunnel, without specially treated, will be difficult to meet the needs of engineering operation steady in a long-term.Active fault is to the threat of engineering works safety mainly from fault movement, and it comprises the burst changing of the relative positions (producing the stick-slip of earthquake) and the slowly changing of the relative positions (not producing the creep of earthquake).The changing of the relative positions of which kind of mode all can threaten to diversion system engineering works.Because fault properties is active fault, be subject to earthquake effect that nondirectional displacement can occur, the differential settlement of active fault section is large, and constantly changes, and when it runs up to the relative displacement of certain magnitude, its safety to hydraulic tunnel has a strong impact on formation.
Current, Chinese scholars is less to passing through the hydraulic tunnel research of active fault, and the less tomography of the scale that is mainly.Hydraulic tunnel passes through tomography scale hour, can adopt the flexible material steel concrete composite lining structure by once lining, secondary lining and middle backfill.But sometimes can run into unavoidably some complicated geological conditionss, especially high earthquake intensity is regional, may run into some larger active fault bands, adopt above-mentioned liner structure, cannot reach required shock resistance and resist the ability that the large-scale fault creep changing of the relative positions destroys, thereby cannot meet security requirement.
Summary of the invention
For above technological deficiency, the object of the present invention is to provide a kind of hydraulic tunnel structure of crossing over large-scale activity fault zone, its construction safety, convenience, and there is good shock resistance and resist the ability that the large-scale fault creep changing of the relative positions destroys, it is safe.
To achieve these goals, the present invention is by the following technical solutions:
A kind of hydraulic tunnel structure of crossing over large-scale activity fault zone, along tunnel, longitudinally comprise active fault leap section, the embedded penstock section that two ends join, cross over active fault the maintenance tunnel that section is connected, described active fault is crossed over section and is adopted composite lining structure, along tunnel, radially by layer structure and endothecium structure, formed, layer structure comprises first phase annular supporting and the lining cutting of first phase annular of radial outside, first phase annular supporting and the lining cutting of first phase annular are reinforced concrete lining layer structure, endothecium structure comprises steel pipe and the bellow-type expansion joint composite lining structure that interval series winding is arranged.
Described steel pipe is vertically arranged with Supporting ring and bearing.
Described Supporting ring adopts lower support pattern.
The pattern that described bearing employing fixed bearing or sliding support and fixed bearing and sliding support are alternately arranged.
Compared with prior art, the present invention has following beneficial effect:
Active fault band of the present invention is crossed over section layer structure and is adopted reinforced concrete lining layer structure as the primary structure of bearing rock pressure and external water pressure, and the composite lining structure that internal layer adopts steel pipe to add FlexbleJoint is born the creep displacement of internal water pressure and earthquake generation; The inhomogeneous displacement that adopts bellow-type expansion joint compensation earthquake to produce, by steel pipe and bellow-type expansion joint series winding, make total form a larger flexible body, the displacement occurring to adapt to any position of tunnel, there is good shock resistance and resist the ability that the large-scale fault creep changing of the relative positions destroys, safe, it has the operation maintenance of being convenient to, is conducive to observe the advantages such as facility layout, energy convenient construction and later maintenance, has significant economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is the longitudinal section structural representation of the present invention;
Fig. 2 is the horizontal section structure schematic diagram of the present invention;
In figure: active fault is crossed over section 1, penstock section 2, maintenance tunnel 3, the supporting 4 of first phase annular, the lining cutting 5 of first phase annular, steel pipe 6, bellow-type expansion joint 7, Supporting ring 8, bearing 9.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described, but claimed scope is not limited to content described in the present embodiment.
As depicted in figs. 1 and 2, the present invention is a kind of hydraulic tunnel structure of crossing over large-scale activity fault zone, along tunnel, longitudinally comprise active fault leap section 1, the embedded penstock section 2 that two ends join, cross over the section 1 maintenance tunnel 3 being connected with active fault, described active fault is crossed over section 1 and is adopted composite lining structure, along tunnel, radially by layer structure and endothecium structure, formed, layer structure comprises first phase annular supporting 4 and the lining cutting 5 of first phase annular of radial outside, first phase annular supporting 4 and the lining cutting 5 of first phase annular are reinforced concrete lining layer structure, endothecium structure comprises steel pipe 6 and the bellow-type expansion joint 7 composite lining structures that interval series winding is arranged.
Described steel pipe 6 is longitudinally provided with Supporting ring 8 and bearing 9 according to certain distance.
Described Supporting ring 8 adopts lower support pattern.
The pattern that described bearing 9 employing fixed bearings or sliding support and fixed bearing and sliding support are alternately arranged.
Active fault of the present invention is crossed over the outer reinforced concrete lining layer structure that adopts of section as the primary structure of bearing rock pressure and external water pressure, and the composite lining structure that internal layer adopts steel pipe to add FlexbleJoint is born the creep displacement of internal water pressure and earthquake generation, the inhomogeneous displacement that adopts bellow-type expansion joint compensation earthquake to produce, by bellow-type expansion joint and rigid structures series winding, make total form a larger flexible body, the displacement occurring to adapt to any position of tunnel, has good shock resistance and resists the ability that the large-scale fault creep changing of the relative positions destroys.

Claims (4)

1. a hydraulic tunnel structure of crossing over large-scale activity fault zone, it is characterized in that: along tunnel, longitudinally comprise active fault leap section (1), the embedded penstock section (2) that two ends join, cross over active fault the maintenance tunnel (3) that section (1) is connected, described active fault is crossed over section (1) and is adopted composite lining structure, along tunnel, radially by layer structure and endothecium structure, formed, layer structure comprises first phase annular supporting (4) and the lining cutting (5) of first phase annular of radial outside, first phase annular supporting (4) and first phase annular lining cutting (5) are reinforced concrete lining layer structure, endothecium structure comprises steel pipe (6) and bellow-type expansion joint (7) the composite lining structure that interval series winding is arranged.
2. the hydraulic tunnel structure of leap large-scale activity fault zone according to claim 1, is characterized in that: described steel pipe (6) is vertically arranged with Supporting ring (8) and bearing (9).
3. the hydraulic tunnel structure of leap large-scale activity fault zone according to claim 2, is characterized in that: described Supporting ring (8) adopts lower support pattern.
4. the hydraulic tunnel structure of leap large-scale activity fault zone according to claim 2, is characterized in that: the pattern that described bearing (9) employing fixed bearing or sliding support and fixed bearing and sliding support are alternately arranged.
CN201410225915.2A 2014-05-26 2014-05-26 A kind of hydraulic tunnel structure of crossing over large-scale activity fault zone Active CN104018846B (en)

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Publication number Priority date Publication date Assignee Title
CN106089235A (en) * 2016-07-21 2016-11-09 中国科学院武汉岩土力学研究所 A kind of water-conveyance tunnel error resilience passing through large-scale activity fracture belt is broken structure
CN107255033A (en) * 2017-06-23 2017-10-17 乌鲁木齐城市轨道集团有限公司 The error resilience for passing through active fault moves the construction method of Tunnel Second Lining
CN108798716A (en) * 2018-06-07 2018-11-13 中国科学院武汉岩土力学研究所 A kind of bright pipe structure of disconnected adaptability of the antidetonation error resilience of buried water-conveyance tunnel
CN110630290A (en) * 2019-09-24 2019-12-31 中水北方勘测设计研究有限责任公司 Method for treating large amount of water gushing of tunnel in river-crossing permeable fault
CN112267901A (en) * 2020-10-23 2021-01-26 西南交通大学 Tunnel structure penetrating through creeping active fault

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106089235A (en) * 2016-07-21 2016-11-09 中国科学院武汉岩土力学研究所 A kind of water-conveyance tunnel error resilience passing through large-scale activity fracture belt is broken structure
CN107255033A (en) * 2017-06-23 2017-10-17 乌鲁木齐城市轨道集团有限公司 The error resilience for passing through active fault moves the construction method of Tunnel Second Lining
CN108798716A (en) * 2018-06-07 2018-11-13 中国科学院武汉岩土力学研究所 A kind of bright pipe structure of disconnected adaptability of the antidetonation error resilience of buried water-conveyance tunnel
CN110630290A (en) * 2019-09-24 2019-12-31 中水北方勘测设计研究有限责任公司 Method for treating large amount of water gushing of tunnel in river-crossing permeable fault
CN112267901A (en) * 2020-10-23 2021-01-26 西南交通大学 Tunnel structure penetrating through creeping active fault

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