CN105065038A - Tunnel collapse disposing method and tunnel collapse support structure - Google Patents
Tunnel collapse disposing method and tunnel collapse support structure Download PDFInfo
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- CN105065038A CN105065038A CN201510488563.4A CN201510488563A CN105065038A CN 105065038 A CN105065038 A CN 105065038A CN 201510488563 A CN201510488563 A CN 201510488563A CN 105065038 A CN105065038 A CN 105065038A
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Abstract
The invention discloses a tunnel collapse disposing method and a tunnel collapse support structure. The method is characterized in that an arch-on-arch structure corresponding to the shape and the range of a collapse cavity is arranged on the top of a steel arch frame of a primary support; the collapse cavity is supported through the arch-on-arch structure; and meanwhile, network concrete and anchor rods are used in an auxiliary way, so that the further enlargement of the collapse is prevented. Through the arrangement of the arch-on-arch structure on the top of the steel arch frame, the problems that the collapse cavity stress continuously changes and the collapse cavity trend is further enlarged are effectively solved; through engineering measures, the engineering requirements are met; the engineering investment is reduced; and the engineering construction period is shortened.
Description
Technical field
the present invention relates to a kind of processing method and Tunnel Collapse supporting and protection structure of Tunnel Collapse, belong to the hydraulic architecture technical field in Hydraulic and Hydro-Power Engineering.
Background technology
in Hydraulic and Hydro-Power Engineering Tunnel excavation process, the surrounding rock category that tunnel passes through varies, after judging surrounding rock category according to geology personnel on site, carry out first liner timbering in time, as three class surrounding rocks take shotcrete measure, four class surrounding rocks take shotcrete local be aided with steel shotcrete support etc.; According to engineering experience, the needs of engineering mostly can be met after supporting completes, but due to the existence that Stress relieving of surrounding rocks and adjustment, the effect of underground water, country rock weakness are with, tunnel local still may cave in, bolt-spary supports is generally taked in chamber of collapsing now for tunnel crown, this kind of engineering measure, if for the good situation of crown geological conditions, can solve the trend that chamber of collapsing expands further timely and effectively; If poor for geological conditions, when there is water burst, weak intercalated layer, often can not solve chamber of collapsing and cave in again, finally cause the increase of investment, the delay of duration.
Summary of the invention
the object of the invention is to, a kind of processing method and Tunnel Collapse supporting and protection structure of Tunnel Collapse is provided, with while reduction engineering construction difficulty, effective reduction construction costs, shorten the construction period, solve Tunnel Collapse problem timely rapidly, thus overcome the deficiencies in the prior art.
technical scheme of the present invention is achieved in that
the processing method of a kind of Tunnel Collapse of the present invention is, the method arranges arch structure on arch corresponding with landslide cavity shape and scope together again at the steel arch-shelf top of first liner timbering, by encircleing upper arch structure, landslide cavity is supported, be aided with in-network processing and anchor pole simultaneously, expand further to prevent from caving in.
of the present invention a kind of Tunnel Collapse supporting and protection structure according to said method formation is that this structure comprises first liner timbering, is provided with the arch identical with first liner timbering structure arches up in landslide place at first liner timbering top.
in aforementioned structure, the shape of described arch arch is similar to landslide cavity shape, and the length of arch arch is greater than landslide extent length.
in aforementioned structure, described arch arch is respectively equipped with steel arch-shelf and in-network processing from the inside to the outside, and in-network processing is fixed on landslide cavity surface through anchor pole.
owing to have employed technique scheme, compared with prior art, the present invention, by laying arch structure on arch at the top of steel arch-shelf, effectively solves the chamber stress that collapses and continues change, the problem that chamber trend of collapsing expands further in the present invention; By this engineering measure, meet the needs of engineering, saved construction investment, shortened the duration of a project.
Accompanying drawing explanation
structural representation when Fig. 1 is the invention process use;
fig. 2 is the structural representation of first liner timbering;
fig. 3 is the structural representation that landslide cavity appears in first liner timbering top.
mark in accompanying drawing: 1-first liner timbering, 2-encircles arch, 3-steel arch-shelf, 4-in-network processing, 5-anchor pole, and 6-caves in cavity.
Detailed description of the invention
below in conjunction with drawings and Examples, the present invention is described in further detail, but not as any limitation of the invention.
the processing method of a kind of Tunnel Collapse of the present invention, as shown in Figure 1: the method arranges arch structure on arch corresponding with landslide cavity shape and scope together again at the steel arch-shelf top of existing first liner timbering, by encircleing upper arch structure, landslide cavity is supported, be aided with in-network processing and anchor pole simultaneously, expand further to prevent from caving in.
according to of the present invention a kind of Tunnel Collapse supporting and protection structure that said method is formed, as shown in Figure 1: this structure comprises existing first liner timbering 1, be provided with the arch identical with first liner timbering structure in landslide place at first liner timbering 1 top and arch up 2.The shape of arch arch is similar to landslide cavity shape, and the length of arch arch is slightly larger than landslide extent length.Arch arch is respectively equipped with steel arch-shelf 3 and in-network processing 4 from the inside to the outside, and in-network processing is fixed on landslide cavity 6 surface through anchor pole 5.
Embodiment
in this example, existing first liner timbering as shown in Figure 2, structural representation during the invention process as shown in Figure 1, due to the existence that Stress relieving of surrounding rocks and adjustment, the effect of underground water, country rock weakness are with, caving in as shown in Figure 2 is there occurs at the part of first liner timbering, if carry out supporting not in time to cave in and likely continue expanded scope, therefore need to carry out secondary supporting to the position that caves in of tunnel.Secondary supporting adopts the support pattern of arch arch.
structure of the present invention is as shown in Figure 1: the first liner timbering 1 before this structure comprises, secondary supporting is carried out in the landslide cavity 6 at first liner timbering top, the structure of secondary supporting is identical with first liner timbering structure, comprises steel arch-shelf 3, in-network processing 4 and anchor pole more than 5 part.The steel arch-shelf of secondary supporting and the steel arch-shelf top being fixed on first liner timbering, play restriction to surrouding rock deformation, be aided with in-network processing and anchor pole simultaneously, the further expansion in the chamber that effectively prevents from collapsing.On arch, the shape of arch structure, material can be selected according to the shape in chamber of collapsing, scope and the order of severity, and common materials mainly contains reinforcing bar, i iron, angle steel etc.; The spacing of anchor pole is determined according to collapse chamber execution conditions, the order of severity of job site.
as follows in the present embodiment work progress:
1, after tunnel excavation one segment length, carry out first liner timbering in time, mainly comprise linked network, anchor pole, pneumatically placed concrete, bracing members etc., can choose according to surrounding rock category; Excavation length is determined according to on-the-spot country rock situation and execution conditions.
2, after first liner timbering completes, continue in work progress at tunnel, if supporting completes hole section before finding, there is landslide phenomenon on top, hole, processes in time.
3, first treatment measures clear up the slag body caved in hole, clear up in time loosening block in Ding Ta chamber, hole during cleaning, after having cleared up, carry out in-network processing 4 and anchor pole 5 is constructed, anchor spacing, length, thickness of shotcrete are determined according to collapse chamber situation or engineering experience.
4, after in-network processing 4 and anchor pole 5 have been constructed, carry out arch arch construction, shape, the material of arch arch 2 structure can be selected according to the shape in chamber of collapsing, scope and the order of severity, and common materials mainly contains reinforcing bar, i iron, angle steel etc.; If collapse, chamber situation is relatively serious, can ribbing in the middle of arch structure on arch, increases the strong point.
when 5, carrying out arch arch construction, if find, first liner timbering steel arch-shelf loosens or instability should be fixed in time; If find, first liner timbering is without steel arch-shelf, first can carry out steel arch-shelf construction, carries out arch arch construction after completing.
Claims (4)
1. the processing method of a Tunnel Collapse, it is characterized in that: the method arranges arch structure on arch corresponding with landslide cavity shape and scope together again at the steel arch-shelf top of first liner timbering, by encircleing upper arch structure, landslide cavity is supported, be aided with in-network processing and anchor pole simultaneously, expand further to prevent from caving in.
2. according to claim 1 method form a Tunnel Collapse supporting and protection structure, comprise first liner timbering (1), it is characterized in that: be provided with the arch identical with first liner timbering (1) structure in landslide place at first liner timbering (1) top and arch up (2).
3. Tunnel Collapse supporting and protection structure according to claim 2, is characterized in that: the shape of described arch arch (2) is similar with landslide cavity shape, and the length that arch arches up is greater than landslide extent length.
4. Tunnel Collapse supporting and protection structure according to claim 2, is characterized in that: described arch arch (2) is respectively equipped with steel arch-shelf (3) and in-network processing (4) from the inside to the outside, and it is surperficial that in-network processing is fixed on landslide cavity (6) through anchor pole (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510488563.4A CN105065038A (en) | 2015-08-11 | 2015-08-11 | Tunnel collapse disposing method and tunnel collapse support structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510488563.4A CN105065038A (en) | 2015-08-11 | 2015-08-11 | Tunnel collapse disposing method and tunnel collapse support structure |
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| CN105065038A true CN105065038A (en) | 2015-11-18 |
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| CN201510488563.4A Pending CN105065038A (en) | 2015-08-11 | 2015-08-11 | Tunnel collapse disposing method and tunnel collapse support structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837373A (en) * | 2017-04-13 | 2017-06-13 | 中国电建集团成都勘测设计研究院有限公司 | A kind of tunnel abutment wall collapses the supporting construction at place |
| CN106894826A (en) * | 2017-05-08 | 2017-06-27 | 中国水利水电建设工程咨询中南有限公司 | The supporting construction and method for protecting support of section of being caved in a kind of hole |
| CN108343447A (en) * | 2017-01-22 | 2018-07-31 | 新疆北方建设集团有限公司 | A kind of tunnel inner steel web safety support construction suitable for frangible rock stratum |
| CN111878121A (en) * | 2020-08-03 | 2020-11-03 | 天津爱纷销科技有限公司 | Tunnel repairing method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343447A (en) * | 2017-01-22 | 2018-07-31 | 新疆北方建设集团有限公司 | A kind of tunnel inner steel web safety support construction suitable for frangible rock stratum |
| CN106837373A (en) * | 2017-04-13 | 2017-06-13 | 中国电建集团成都勘测设计研究院有限公司 | A kind of tunnel abutment wall collapses the supporting construction at place |
| CN106894826A (en) * | 2017-05-08 | 2017-06-27 | 中国水利水电建设工程咨询中南有限公司 | The supporting construction and method for protecting support of section of being caved in a kind of hole |
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| CN111878121A (en) * | 2020-08-03 | 2020-11-03 | 天津爱纷销科技有限公司 | Tunnel repairing method |
| CN111878121B (en) * | 2020-08-03 | 2022-09-30 | 中铁九局集团第五工程有限公司 | Tunnel repairing method |
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Application publication date: 20151118 |