CN206530341U - A kind of underground cavern crown structure and its underground chamber - Google Patents
A kind of underground cavern crown structure and its underground chamber Download PDFInfo
- Publication number
- CN206530341U CN206530341U CN201720220485.4U CN201720220485U CN206530341U CN 206530341 U CN206530341 U CN 206530341U CN 201720220485 U CN201720220485 U CN 201720220485U CN 206530341 U CN206530341 U CN 206530341U
- Authority
- CN
- China
- Prior art keywords
- hole
- cavern
- auxiliary stress
- underground
- stress hole
- 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
Links
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses a kind of underground cavern crown structure, including the construction transportation hole longitudinally disposed in the rock mass of both sides positioned at the crown portion of main Mass Near The Top of Underground Cavity, above the crown portion, the auxiliary stress hole for being across above crown portion, being dug in rock mass, aid in stress hole to be provided with multiple along longitudinal direction, and connected with construction transportation hole；Poured in auxiliary stress hole and be filled with armored concrete, be equipped between each auxiliary stress hole and crown portion to wearing prestress anchorage cable.Additionally provide a kind of underground chamber simultaneously.The utility model not only easy construction, quick, and the support reinforcement in main cavern's crown portion is completed before main cavern excavation, firm crown structure is formed, the effect reinforced in advance is achieved, adds country rock globality, country rock itself bearing capacity is effectively played.Compared to conventional construction technology, the overall security in cavern, reliability and stability, the complex geologic conditions that are particularly suitable for use in, the super-span underground chamber of surrounding rock stability extreme difference are significantly improved.
Description
Technical field
The utility model belongs to underground engineering, and in particular to a kind of underground cavern crown structure and its underground chamber, especially
Constructed suitable for super-span under complex geological condition.
Background technology
The section span of conventional underground chamber is usually no more than 40 meters, the reinforcing to underground cavern crown, conventional measure
After cavern excavation, then using the supporting type of some support.
The span of large section cavern often reaches 60-70 meters.Conventional supporting measure due to exist excavation slag tap the duration with
In the supporting construction cycle, it is latter until supporting construction is completed that face explosion forms cavern, a period of time is needed during this, so as to make
, there is engineering safety hidden danger in cavitation ceiling arch non-support within a period of time.
For the large section cavern under the complex geological conditions such as surrounding rock of chamber condition difference, usually due to surrounding rock of chamber condition
Difference causes cavern's crown to excavate after shaping, excavation just to cave in therewith, it is impossible to form conventional cavern.It can even excavate
The geological conditions of shaping, because the span of large section cavern is excessive, using conventional support form, also results in cavern's crown and encloses
Rock is unstable.
Above mentioned problem is limited by a variety of conditions, is arranged in the super large in the poor stratum of complex geologic conditions, wall rock condition
It is especially prominent in span underground chamber.
In addition, being defined to the direction vocabulary being previously mentioned in this case, in the art, technical staff generally assert longitudinal direction
It is along the direction of underground chamber depth；It is laterally the direction in underground chamber cross section, perpendicular to underground chamber axis.
Utility model content
In view of the above-mentioned problems, the utility model aims to provide the underground cavern crown structure of safety and firmness a kind of and supporting
Underground chamber.
The utility model solve problem technical scheme be：A kind of underground cavern crown structure, including positioned at main Dong Shiding
The crown portion in portion, is additionally included in construction transportation hole longitudinally disposed in the rock mass of both sides above crown portion, is across crown portion
Top, the auxiliary stress hole dug in rock mass, the auxiliary stress hole are provided with multiple along longitudinal direction, and connect with construction transportation hole
It is logical；
Poured in the auxiliary stress hole and be filled with armored concrete, be all provided between each auxiliary stress hole and crown portion
Have to wearing prestress anchorage cable.
In such scheme, bearing beam is formed after the pouring reinforcement concrete of auxiliary stress hole, by wearing prestress anchorage cable
Crown portion of Fan Diaozhu caverns country rock, so as to ensure the stabilization in crown portion.
Further, poured in the construction transportation hole and be filled with armored concrete, be filled with the solid of armored concrete
Construction transportation hole is the bearing in auxiliary stress hole；The construction transportation hole is externally provided with the anchoring piece for stretching into rock mass, to construction transportation
Hole is pulled.
Construction transportation hole forms stress bearing, can further increase the ability that load is born in auxiliary stress hole.Anchoring piece
For anchor pole or anchor cable, construction transportation hole is formed by anchor pole or anchor cable and pulled, by increasing capacitance it is possible to increase the bearing capacity in construction transportation hole.
The arrangement in auxiliary stress hole has a variety of, e.g., is arranged at intervals between the adjacent auxiliary stress hole.
Or, continuously set between the adjacent auxiliary stress hole.
Further, the cross section in the auxiliary stress hole is arch or linear pattern.Preferably arch, domes are born
Power is bigger.
Further, auxiliary stress hole is led upwards provided with the prestress anchorage cable for stretching into rock mass in each auxiliary stress hole
Draw.
It is preferred that, radially being arranged to wearing prestress anchorage cable on each auxiliary stress hole.
Meanwhile, the utility model also provides a kind of underground chamber, including main cavern, and the top of the main cavern is above-mentioned side
Crown structure described in case.
The utility model not only easy construction, quick, and complete before main cavern excavation the branch in main cavern's crown portion
Shield is reinforced, and is formed firm crown structure, is achieved the effect reinforced in advance, add country rock globality, effectively play country rock
Itself bearing capacity.Compared to conventional construction technology, the overall security in cavern, reliability and stability are significantly improved, especially
Suitable for complex geologic conditions, the super-span underground chamber of surrounding rock stability extreme difference.
Brief description of the drawings
The utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the underground chamber drawing in side sectional elevation of embodiment 1.
Fig. 2 is the underground chamber profilograph of embodiment 1.
Fig. 3 is the underground chamber drawing in side sectional elevation of embodiment 2.
Fig. 4 is the underground chamber profilograph of embodiment 2.
In figure：1-auxiliary stress hole, 2-construction transportation hole, 3,6-prestress anchorage cable, 4-auxiliary construction hole, 5-main
Cavern, 8- anchor poles.
Embodiment
Embodiment 1
As shown in Fig. 1~2, a kind of underground cavern crown structure, including crown portion positioned at the top of main cavern 5, in crown
Construction transportation hole 2 longitudinally disposed in the rock mass of both sides, the auxiliary for being across above crown portion, being dug in rock mass above portion
Stress hole 1.
The auxiliary stress hole 1 is longitudinally spaced to be provided with multiple, and is connected with construction transportation hole 2.
Poured in the auxiliary stress hole 1 and be filled with armored concrete, between each auxiliary stress hole 1 and crown portion
Provided with radially arranging to wearing prestress anchorage cable 3.Each auxiliary stress hole 1 is radially provided with upwards stretches into rock mass
Prestress anchorage cable 6, auxiliary stress hole 1 is pulled.
Poured in the construction transportation hole 2 and be filled with armored concrete, be filled with the solid construction transportation of armored concrete
Hole 2 is the bearing in auxiliary stress hole 1.The construction transportation hole 2 is externally provided with the anchor pole 8 for stretching into rock mass, and construction transportation hole 2 is led
Draw.
The cross section in the auxiliary stress hole 1 is arch.
The present embodiment also provides a kind of underground chamber, including main cavern 5, and the top of the main cavern 5 is above-mentioned crown knot
Structure.
Above-mentioned Cavity Construction method is：
a）Before the main excavation construction of cavern 5, in the rock mass for the overlying regions both sides that main cavern 5 is excavated in design, along longitudinal direction
Excavation construction access tunnel 2, construction transportation hole 2 is externally provided with the anchor pole 8 for stretching into rock mass, and construction transportation hole 2 is pulled.Construction transportation hole
2 length is more than or equal to main cavern's length.
b）Construction transportation hole 2 with wherein side is starting point, the construction transportation hole 2 of opposite side is terminal, is laterally excavated auxiliary
Stress hole 1 is helped, auxiliary stress hole 1 is longitudinally spaced to be provided with multiple, and is connected with construction transportation hole 2；Spread in auxiliary stress hole 1
If reinforcing bar or formed steel construction, and aid in stress hole 1 with concreting filling is whole.
c）Within the excavating sideline of main cavern 5, along the sideline in crown portion of main cavern 5, auxiliary stress hole 1 is corresponded,
Laterally excavate multiple auxiliary construction holes 4；Each auxiliary construction hole 4 is located at immediately below its corresponding auxiliary stress hole 1.
d）In horizontal auxiliary construction hole 4, radially upwards construction to wearing prestress anchorage cable 3, until deeply auxiliary by
Power hole 1 is simultaneously fixed, by wearing the crown portion country rock of 3 Fan Diaozhu caverns of prestress anchorage cable 5 so that crown portion is stable.To wearing pre- answer
After the completion of power anchor cable 3 is constructed, then the prestress anchorage cable 6 for stretching into rock mass is set up from auxiliary stress hole 1, by auxiliary stress hole 1
Drawing.
e）The pouring reinforcement concrete in construction transportation hole 2, makes the construction transportation hole 2 of both sides form auxiliary stress hole 1
Bearing.
f）Carry out auxiliary construction hole 4 in the excavation of main cavern 5, digging process to be abolished, the region where auxiliary construction hole 4
A part as main cavern 5.Afterwards, the main supporting construction of cavern 5 is carried out.
In above-mentioned steps method, load and the span of main cavern 5 that the cross dimensions in auxiliary stress hole 1 is born according to it etc.
Condition is calculated and construction transportation needs comprehensive determine.
Embodiment 2
As shown in figs. 34, embodiment 1 is repeated, except that：For complex geologic conditions, wall rock condition extreme difference it is super
Continuously set between the main cavern of big cross section, adjacent auxiliary stress hole 1.
Exist in its construction method following different：
Step b）In continuously set between adjacent auxiliary stress hole 1, the auxiliary stress hole 1 continuously arranged is applied using storehouse is jumped
Work, eventually forms entirety closely.
Step c）In each auxiliary construction hole 4 be located at immediately below its corresponding auxiliary stress hole 1, auxiliary construction hole 4
It is continuous arrangement, it is same using the construction of jump storehouse.
Claims (8)
1. a kind of underground cavern crown structure, including positioned at main cavern（5）The crown portion at top, it is characterised in that：It is additionally included in
Construction transportation hole longitudinally disposed in the rock mass of both sides above crown portion（2）, be across above crown portion, dug in rock mass
Auxiliary stress hole（1）, the auxiliary stress hole（1）Along longitudinal direction provided with multiple, and with construction transportation hole（2）Connection；
The auxiliary stress hole（1）Inside pour and be filled with armored concrete, each auxiliary stress hole（1）Between crown portion
Provided with to wearing prestress anchorage cable（3）.
2. underground cavern crown structure according to claim 1, it is characterised in that：The construction transportation hole（2）Inside pour
Armored concrete is filled with, the solid construction transportation hole of armored concrete is filled with（2）For auxiliary stress hole（1）Bearing；Institute
State construction transportation hole（2）The anchoring piece for stretching into rock mass is externally provided with, to construction transportation hole（2）Drawing.
3. underground cavern crown structure according to claim 1, it is characterised in that：The adjacent auxiliary stress hole（1）It
Between be arranged at intervals.
4. underground cavern crown structure according to claim 1, it is characterised in that：The adjacent auxiliary stress hole（1）It
Between continuously set.
5. underground cavern crown structure according to claim 1, it is characterised in that：The auxiliary stress hole（1）It is cross-section
Face is arch or linear pattern.
6. underground cavern crown structure according to claim 1 or 2, it is characterised in that：Each auxiliary stress hole（1）To
Provided with the prestress anchorage cable for stretching into rock mass（6）, by auxiliary stress hole（1）Drawing.
7. underground cavern crown structure according to claim 1, it is characterised in that：Each auxiliary stress hole（1）On
To wearing prestress anchorage cable（3）Radially arrange.
8. a kind of underground chamber, including main cavern（5）, it is characterised in that：The main cavern（5）Top be the claims
Crown structure described in 1~7 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720220485.4U CN206530341U (en) | 2017-03-08 | 2017-03-08 | A kind of underground cavern crown structure and its underground chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720220485.4U CN206530341U (en) | 2017-03-08 | 2017-03-08 | A kind of underground cavern crown structure and its underground chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206530341U true CN206530341U (en) | 2017-09-29 |
Family
ID=59918847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720220485.4U Active CN206530341U (en) | 2017-03-08 | 2017-03-08 | A kind of underground cavern crown structure and its underground chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206530341U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640117A (en) * | 2017-03-08 | 2017-05-10 | 中国电建集团中南勘测设计研究院有限公司 | Underground cavern top arc structure, underground cavern and construction method of underground cavern |
| CN110207649A (en) * | 2019-06-26 | 2019-09-06 | 中国电建集团成都勘测设计研究院有限公司 | Aided measurement device for cavern's crown structural plane occurrence |
| CN114320340A (en) * | 2021-12-28 | 2022-04-12 | 中铁第六勘察设计院集团有限公司 | Large-span pillar-free underground tunnel structure and method based on advanced pilot tunnel and counter-pulling anchor cable |
-
2017
- 2017-03-08 CN CN201720220485.4U patent/CN206530341U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640117A (en) * | 2017-03-08 | 2017-05-10 | 中国电建集团中南勘测设计研究院有限公司 | Underground cavern top arc structure, underground cavern and construction method of underground cavern |
| CN106640117B (en) * | 2017-03-08 | 2019-02-19 | 中国电建集团中南勘测设计研究院有限公司 | A kind of underground cavern crown structure, underground chamber and Cavity Construction method |
| CN110207649A (en) * | 2019-06-26 | 2019-09-06 | 中国电建集团成都勘测设计研究院有限公司 | Aided measurement device for cavern's crown structural plane occurrence |
| CN110207649B (en) * | 2019-06-26 | 2023-12-01 | 中国电建集团成都勘测设计研究院有限公司 | Auxiliary measuring device for calorifics roof arch structural plane shape |
| CN114320340A (en) * | 2021-12-28 | 2022-04-12 | 中铁第六勘察设计院集团有限公司 | Large-span pillar-free underground tunnel structure and method based on advanced pilot tunnel and counter-pulling anchor cable |
| CN114320340B (en) * | 2021-12-28 | 2023-09-12 | 中铁第六勘察设计院集团有限公司 | Large-span non-column underground tunnel structure and method based on advanced pilot tunnel and opposite-pulling anchor cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106014452B (en) | A kind of Confined High Strength Concrete support system suitable for subterranean tunnel | |
| SE1750913A1 (en) | Method for constructing extra-large variable cross section tunnel | |
| CN104074529B (en) | A kind of cave continuous bivalve, lane, deep reinforcement means | |
| CN107725068A (en) | A kind of assembled supporting construction and its construction method based on outside steel arch-shelf and inner side concrete slab | |
| CN103898916B (en) | Mini stake Composite Braced Retaining Structure and construction method | |
| CN103615273A (en) | Square steel confined concrete arch center wall back filling bolting-grouting support system and construction method | |
| CN203515604U (en) | Tunnel Support structure for schist layer in deformation | |
| CN105696602A (en) | Composite pile-anchor supporting method and structure for deepening excavation | |
| CN101775988A (en) | Construction method for inclined shaft to main tunnel of weak surrounding rock | |
| CN106481343A (en) | A kind of Soft Rock Tunnel Excavation and preliminary bracing method | |
| CN206530341U (en) | A kind of underground cavern crown structure and its underground chamber | |
| CN109930609A (en) | A kind of campshed composite supporting construction and its construction method for upper-soft lower-hard ground | |
| CN203939034U (en) | The slope treatment structure that a kind of antislide pile is combined with anchor cable, anchor caverns | |
| CN110629671A (en) | Suspension bridge anchorage and construction method thereof | |
| CN101899837A (en) | Active anti-shear concrete supporting structure for reinforcing deep sliding surfaces of rock slopes | |
| CN103939115B (en) | A kind of method of half shallow mining method hangar tunnel and structure | |
| CN110206038A (en) | Supporting construction and construction method at a kind of concave foundation pit external corner | |
| CN106640117B (en) | A kind of underground cavern crown structure, underground chamber and Cavity Construction method | |
| CN107503779A (en) | A kind of extrusion pressing type Support System in Soft Rock Tunnels prestress anchorage cable group supporting construction and construction technology | |
| CN201665875U (en) | Light gravity-type anti-earthquake concrete retaining wall | |
| CN104612719B (en) | The anti-collapse processing method in a kind of soft rock tunnel hole | |
| CN109826644A (en) | The globality support system and construction method of rock pillar in a kind of double-hole tunnel | |
| CN106640118B (en) | A kind of underground cavern crown structure, underground chamber and Cavity Construction method | |
| CN203655324U (en) | Square steel confined concrete arch center back filling bolt-grouting retaining and protecting system | |
| CN206722841U (en) | A kind of underground cavern crown structure and its underground chamber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |