CN204646240U - Underground shaft supporting and protection structure in a kind of loose media - Google Patents

Underground shaft supporting and protection structure in a kind of loose media Download PDF

Info

Publication number
CN204646240U
CN204646240U CN201520345258.5U CN201520345258U CN204646240U CN 204646240 U CN204646240 U CN 204646240U CN 201520345258 U CN201520345258 U CN 201520345258U CN 204646240 U CN204646240 U CN 204646240U
Authority
CN
China
Prior art keywords
anchor pole
shaped steel
loose media
protection structure
steel arch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201520345258.5U
Other languages
Chinese (zh)
Inventor
胡旺兴
李国权
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PowerChina Zhongnan Engineering Corp Ltd
Original Assignee
PowerChina Zhongnan Engineering Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by PowerChina Zhongnan Engineering Corp Ltd filed Critical PowerChina Zhongnan Engineering Corp Ltd
Priority to CN201520345258.5U priority Critical patent/CN204646240U/en
Application granted granted Critical
Publication of CN204646240U publication Critical patent/CN204646240U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses the underground shaft supporting and protection structure in a kind of loose media, be included in the grouting small pilot pipe that the loose media of below excavation face is arranged, and around hole wall arrange linked network and anchor pole, described linked network and anchor pole along vertical shaft axially past downward-extension, and are sprayed with the first layer of concrete on the hole wall being provided with linked network and anchor pole; Anchor pole free end Zhi Li has the annular shaped steel arch of horizontal arrangement, and this shaped steel arch along vertical shaft axially down interval setting, and is sprayed with the second layer of concrete on the hole wall being provided with shaped steel arch.This shaft support structure has carried out appropriate transformation to loose rock mass, loose rock mass is cemented to have the carrying arch ring of certain thickness and intensity, carrying arch ring and shaped steel arch and bolt-spary supports structure organic assembling, coaction, enough supporting drags can be provided for wellbore stability, thus guarantee that the excavation of safety and the vertical shaft excavated in loose media is shaping, there is easy construction, speed of application be fast, advantage that construction costs is relatively low.

Description

Underground shaft supporting and protection structure in a kind of loose media
Technical field
The utility model relates to the underground shaft supporting and protection structure in a kind of loose media, belongs to and utilizes vertical shaft positive well method to excavate shaping supporting and protection structure in the loose rock mass of underground.
Background technology
In prior art, rather ripe in the technology of earth's surface excavating shaft; When underground construction shaft excavation, for ensureing construction safety, often initiatively avoid loose rock mass or landslide slag body.In current underground engineering construction case, adit is excavated comparatively common in loose rock mass or landslide slag body, but to excavating shaft in loose rock mass or landslide slag body, because its difficulty of construction is large, and be difficult to select suitable supporting and protection structure ensure construction safety and excavate shaping, be still a great problem so far.
Utility model content
For the problems referred to above, the utility model aims to provide the underground shaft supporting and protection structure in a kind of loose media, and this supporting and protection structure can ensure construction safety and excavate shaping, and easy construction, save cost.
The technical scheme that the utility model is dealt with problems is: the underground shaft supporting and protection structure in a kind of loose media, be included in the grouting small pilot pipe that the loose media of below excavation face is arranged, and around hole wall arrange linked network and anchor pole, described linked network and anchor pole along vertical shaft axially past downward-extension, and are sprayed with the first layer of concrete on the hole wall being provided with linked network and anchor pole;
Anchor pole free end Zhi Li has the annular shaped steel arch of horizontal arrangement, and this shaped steel arch along vertical shaft axially down interval setting, and is sprayed with the second layer of concrete on the hole wall being provided with shaped steel arch.
According to the stressing conditions of hole wall, be also provided with the channel-section steel arranged along vertical shaft axis direction before shaped steel arch does not spray the second concrete, and many channel-section steel hoop intervals are arranged, channel-section steel welds with shaped steel arch contact point place.Being arranged so that channel-section steel is combined with shaped steel arch and forming net-like frame structure of channel-section steel, adds the integral rigidity of supporting and protection structure.
Further, described channel-section steel is arranged along whole hole wall one-week interval, and when the position that channel-section steel is arranged contacts with anchor pole free end, is welded by channel-section steel with the contact point place of anchor pole.
Described grouting small pilot pipe opposed vertical direction tilts to insert loose media.
Described shaped steel arch is formed by i iron clod wash.
Preferably, described anchor pole is self-feeding anchor pile
Implementation step of the present utility model is:
A () loose media below excavation face become low-angle to arrange grouting small pilot pipe with vertical direction;
B () then digs clearly, dug clearly to carry out linked network, just spray the first layer of concrete to hole wall afterwards, and beats a small amount of anchor pole;
C () be a vertical annular shaped steel arch on anchor pole, on shaped steel arch, spacer ring is put channel-section steel around hole wall cloth and welds;
D () then sprays the second layer of concrete again to the braced structures that shaped steel arch and channel-section steel are formed, and the system anchor bolt of full of constructing.
Carry out according to above-mentioned steps circulation, after digging certain depth clearly, carry out supporting and protection structure, then continue to deep-cut, until complete the support construction of this vertical shaft.
Remarkable result of the present utility model is: this shaft support structure has carried out appropriate transformation to loose rock mass, by ductule and bolt grouting, preliminary consolidation is carried out to loose rock mass, loose rock mass is cemented to have the carrying arch ring of certain thickness and intensity, carrying arch ring and shaped steel arch and bolt-spary supports structure organic assembling, coaction, enough supporting drags can be provided for wellbore stability, thus guarantee that the excavation of safety and the vertical shaft of constructing in loose media is shaping.
Meanwhile, because whole supporting and protection structure is for tempering toughness with gentleness, its easy construction, speed of application is very fast, construction costs is relatively low.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is shaft support construction profile of the present utility model.
Fig. 2 is the partial enlarged drawing of supporting and protection structure in Fig. 1.
Fig. 3 is shaft support structure drawing in side sectional elevation of the present utility model.
In figure, 1-grouting small pilot pipe, 2-shaped steel arch, 3-self-feeding anchor pile, 4-channel-section steel, 5-linked network, 6-first layer of concrete, 7-second layer of concrete, 8-loose media.
Detailed description of the invention
As shown in Figures 1 to 3, underground shaft supporting and protection structure in a kind of loose media, be included in the grouting small pilot pipe 1 that the loose media 8 of below excavation face is arranged, and around hole wall arrange linked network 5 and self-feeding anchor pile 3, described linked network 5 and self-feeding anchor pile 3 along vertical shaft axially past downward-extension, and are sprayed with the first layer of concrete 6 on the hole wall being provided with linked network 5 and self-feeding anchor pile 3;
Self-feeding anchor pile 3 free end Zhi Li has the annular shaped steel arch 2 of horizontal arrangement, this shaped steel arch 2 is along vertical shaft axially down interval setting, shaped steel arch 2 is provided with the channel-section steel 4 arranged along vertical shaft axis direction, and many channel-section steel 4 hoop intervals are arranged, channel-section steel 4 welds with shaped steel arch 2 contact point place.When the position that channel-section steel 4 is arranged contacts with self-feeding anchor pile 3 free end, channel-section steel 4 is welded with the contact point place of self-feeding anchor pile 3.
The braced structures that described shaped steel arch 2 and channel-section steel 4 are formed is sprayed with the second layer of concrete 7 again, and the system self-feeding anchor pile 3 of full of constructing.
Described grouting small pilot pipe 1 opposed vertical direction tilts to insert loose media 8.
Described shaped steel arch 2 is formed by i iron clod wash.

Claims (6)

1. the underground shaft supporting and protection structure in a loose media, it is characterized in that: be included in the grouting small pilot pipe that the loose media of below excavation face is arranged, and around hole wall arrange linked network and anchor pole, described linked network and anchor pole along vertical shaft axially past downward-extension, and are sprayed with the first layer of concrete on the hole wall being provided with linked network and anchor pole;
Anchor pole free end Zhi Li has the annular shaped steel arch of horizontal arrangement, and this shaped steel arch along vertical shaft axially down interval setting, and is sprayed with the second layer of concrete on the hole wall being provided with shaped steel arch.
2. the underground shaft supporting and protection structure in loose media according to claim 1, it is characterized in that: do not spray the second concrete on shaped steel arch before, be also provided with the channel-section steel arranged along vertical shaft axis direction, and many channel-section steel hoop intervals are arranged, channel-section steel welds with shaped steel arch contact point place.
3. the underground shaft supporting and protection structure in loose media according to claim 2, is characterized in that: described channel-section steel is arranged along whole hole wall one-week interval, and when the position that channel-section steel is arranged contacts with anchor pole free end, is welded by channel-section steel with the contact point place of anchor pole.
4. the underground shaft supporting and protection structure in the loose media according to any one of claims 1 to 3, is characterized in that: grouting small pilot pipe opposed vertical direction tilts to insert loose media.
5. the underground shaft supporting and protection structure in the loose media according to any one of claims 1 to 3, is characterized in that: described shaped steel arch is formed by i iron clod wash.
6. the underground shaft supporting and protection structure in the loose media according to any one of claims 1 to 3, is characterized in that: described anchor pole is self-feeding anchor pile.
CN201520345258.5U 2015-05-26 2015-05-26 Underground shaft supporting and protection structure in a kind of loose media Active CN204646240U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520345258.5U CN204646240U (en) 2015-05-26 2015-05-26 Underground shaft supporting and protection structure in a kind of loose media

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520345258.5U CN204646240U (en) 2015-05-26 2015-05-26 Underground shaft supporting and protection structure in a kind of loose media

Publications (1)

Publication Number Publication Date
CN204646240U true CN204646240U (en) 2015-09-16

Family

ID=54099004

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520345258.5U Active CN204646240U (en) 2015-05-26 2015-05-26 Underground shaft supporting and protection structure in a kind of loose media

Country Status (1)

Country Link
CN (1) CN204646240U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105201514A (en) * 2015-09-15 2015-12-30 中国矿业大学 Water-bearing rock stratum borehole wall structure and construction method
CN109854285A (en) * 2019-02-28 2019-06-07 长沙有色冶金设计研究院有限公司 A kind of depth vertical supporting construction and construction method
CN110985000A (en) * 2019-11-28 2020-04-10 苏州中车建设工程有限公司 Vertical shaft annular steel support assembly and construction method
CN111894598A (en) * 2020-07-01 2020-11-06 中国恩菲工程技术有限公司 Shaft reinforcing method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105201514A (en) * 2015-09-15 2015-12-30 中国矿业大学 Water-bearing rock stratum borehole wall structure and construction method
CN109854285A (en) * 2019-02-28 2019-06-07 长沙有色冶金设计研究院有限公司 A kind of depth vertical supporting construction and construction method
CN109854285B (en) * 2019-02-28 2020-10-02 长沙有色冶金设计研究院有限公司 Deep vertical shaft supporting structure and construction method
CN110985000A (en) * 2019-11-28 2020-04-10 苏州中车建设工程有限公司 Vertical shaft annular steel support assembly and construction method
CN110985000B (en) * 2019-11-28 2021-06-15 苏州中车建设工程有限公司 Vertical shaft annular steel support assembly and construction method
CN111894598A (en) * 2020-07-01 2020-11-06 中国恩菲工程技术有限公司 Shaft reinforcing method

Similar Documents

Publication Publication Date Title
CN204646240U (en) Underground shaft supporting and protection structure in a kind of loose media
CN202690082U (en) Combined steel frame structure for preventing deformation and subsidence of tunnel
CN102155232B (en) Construction method of large-span asymmetrical double-arch railway tunnel under terrain bias pressure condition
CN103590406A (en) Construction method for synchronously excavating ultra-large type deep foundation pits in partitioned mode
CN204098043U (en) After staying soil, excavation is in conjunction with inner support Retaining Structure with Double-row Piles
CN103469802A (en) Combined lattice steel frame spray anchoring supporting method and combined lattice steel frame spray anchoring supporting structure
CN103899318A (en) Medium ground tunnel milling excavating and mating mechanized construction method
CN205277460U (en) Interim strutting arrangement of tunnel excavation
CN203583493U (en) Combined lattice steel frame spray anchoring foundation pit supporting structure
CN103541364A (en) Design and construction method of large area foundation pit deformation control with roundabout method
CN204511463U (en) The two spray anchor combined type supporting and protection structure of country rock smashed to pieces
CN204738819U (en) Tunnel is with non - disturbance type chamber supporting construction that collapses
CN204825923U (en) Relay formula underground structure
CN204738302U (en) Multi -storey frame formula double row pile supporting construction
CN103132531A (en) Foundation pit supporting system construction method
CN202090352U (en) Deep foundation pit bracing system with steel pipe piles-self-drilling type pre-stress anchor rods
CN205475257U (en) A composite pile anchor supporting construction for deepening excavation
CN102704958B (en) Construction method for large section underground cavity excavation supporting
CN205154188U (en) Supplementary bearing structure that excavates of big hunch of city offspur tunnel section
CN104389609A (en) No-blasting mechanical digging method
CN104141500A (en) Hardened sand gravel stratum cavern construction method
CN104612704A (en) Middle-wall-free multi-arch tunnel
CN104533431A (en) Construction method for multiple-arch tunnel without middle walls
CN204609897U (en) A kind of pipe curtain freezing process supporting and protection structure
CN207829905U (en) A kind of drift-sand stratum bored tunnel three-dimensional supporting construction in advance

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant