CN206957714U - Deep-lying tunnel rock burst relief structure that is a kind of double-deck while excavating in the same direction - Google Patents
Deep-lying tunnel rock burst relief structure that is a kind of double-deck while excavating in the same direction Download PDFInfo
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- CN206957714U CN206957714U CN201720518954.0U CN201720518954U CN206957714U CN 206957714 U CN206957714 U CN 206957714U CN 201720518954 U CN201720518954 U CN 201720518954U CN 206957714 U CN206957714 U CN 206957714U
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Abstract
The utility model belongs to underground engineering field, more particularly, to deep-lying tunnel rock burst relief structure that is a kind of double-deck while excavating in the same direction.Deep-lying tunnel rock burst relief structure that is provided by the utility model double-deck while excavating in the same direction passes through drilling, reasonable Arrangement blast hole and its arranged direction in deep-lying tunnel region of stress concentration, rock mass shape is changed using short drilling depth, multicycle Excavation blasting mode, it is horizontal to eliminate or reduce the energy accumulation of rock mass weight, substantially improves construction safety（Including personal security and equipment safety）；Driving progress is simultaneously effective ensure that, and on the premise of quality is ensured, shortens the duration.
Description
Technical field
The utility model belongs to underground engineering field, more particularly, to deep-lying tunnel rock that is a kind of double-deck while excavating in the same direction
Quick-fried relief structure.
Background technology
Rock burst is country rock caused by the potential energy accumulated in rock mass or the unexpected release of strain energy during Underground Engineering Excavation
Destroy, casualties, working face or equipment can be caused to destroy, its fundamental characteristics is unexpected and violent.By the duration or other
Factor influences, it is sometimes desirable to while upper and lower two layers of multiple caverns are tunneled in the same direction.When two this underground deep cavern group's rock mass
The hole footpath for being smaller than upper and lower cavern when, it is most likely that the position rock mass rock burst occurs.This rock burst destruction direction perpendicular to
Cavern direction, country rock sheet country rock can be made to come off, cause to cave in, penetrate 2 adjacent caverns, have a strong impact on or even destroy work
Journey.When this rock burst occurs, vibrations are strong, and duration length, damage envelope is big, turn into control engineering construction safety, tunnel into
Degree or even the key factor of success or failure.
So far, the bilayer of neither one fixation is gone back in global deep-buried underground engineering construction while excavates rock in the same direction
Quick-fried construction control method, the method for domestic often step excavation, but this method need to expend larger manpower, financial resources and when
Between cost, more effective this kind of rockburst control method be substantially at space state.
The content of the invention
The purpose of this utility model is, for the deficiencies in the prior art, there is provided one kind is double-deck while opens in the same direction
The deep-lying tunnel rock burst relief structure of digging.
Therefore, above-mentioned purpose of the present utility model is achieved through the following technical solutions：
Deep-lying tunnel rock burst relief structure that is a kind of double-deck while excavating in the same direction, it is described double-deck while excavate in the same direction buried
Tunnel rock burst relief structure includes upper strata chamber and lower floor's chamber, and upper strata chamber and lower floor's chamber are in be arranged in up and down on rock mass,
The upper strata chamber and lower floor's chamber are gateway opening type；Upper strata is set to push up respectively from top to bottom on the rock mass of the upper strata chamber
Hole, upper strata mesopore, upper strata lower opening and upper strata bottom outlet, set respectively from top to bottom on the rock mass of lower floor's chamber lower floor's apical pore,
Lower floor's mesopore, lower floor's lower opening and lower floor's bottom outlet, under the upper strata apical pore, upper strata mesopore, upper strata lower opening and lower floor's mesopore, lower floor
Hole and lower floor's bottom outlet are blast hole, and the upper strata bottom outlet and lower floor's apical pore are control hole, are used to load explosive in blast hole, control
Loading explosive is not used in hole；The upper strata apical pore is arranged on corresponding to the Dong Ding regions of gateway opening type upper strata chamber on rock mass,
The upper strata mesopore and upper strata lower opening are arranged on corresponding to the barrel region of gateway opening type upper strata chamber on rock mass, the upper strata bottom
Hole is arranged on corresponding to the hole bottom surface of gateway opening type upper strata chamber on rock mass；Lower floor's apical pore is arranged on gateway opening type lower floor cave
Corresponding to the hole top surface of room on rock mass, lower floor's mesopore and lower floor's lower opening are arranged on the barrel region of gateway opening type lower floor chamber
On corresponding rock mass, lower floor's bottom outlet is arranged on corresponding to the barrel region bottom of gateway opening type lower floor chamber on rock mass.
While using above-mentioned technical proposal, the utility model can also be used or combined using further below
Technical scheme：
The upper strata apical pore is four, and four upper strata apical pores are arranged to two rows, and four upper strata apical pores are arranged on camber line.
Lower floor's apical pore is four, and four lower floor's apical pores are arranged to two rows, and four lower floor's apical pores are arranged in hole top surface and thrown
Shadow is on the camber line on rock mass.
The upper strata mesopore, upper strata lower opening and upper strata bottom outlet are multiple and are separately positioned on same horizontal plane.
Lower floor's mesopore, lower floor's lower opening and lower floor's bottom outlet are multiple and are separately positioned on same horizontal plane.
The hole depth length of the control hole is identical, and the hole depth length of the blast hole is identical；The hole depth length of the control hole
In the hole depth of blast hole.
The upper strata mesopore arranges and is 5 ~ 6 degree with the angle of horizontal direction obliquely, upper strata lower opening cloth obliquely
Put and be 2 ~ 3 degree with the angle of horizontal direction；Lower floor's mesopore arranges and is 2 ~ 3 degree with the angle of horizontal direction obliquely,
Lower floor's lower opening is arranged and is 2 ~ 3 degree with the angle of horizontal direction obliquely.
The hole depth length of the control hole is 4.5 m, and the hole depth length of the blast hole is 4 m；Upper strata bottom outlet, lower floor top
Hole is not less than 0.5 m with upper strata lower opening, the distance of lower opening mesopore respectively.
Each blast hole and control hole are arranged in area of stress concentration, and hole depth is to reach or through area of stress concentration as original
Then, the number of blast hole, pore size and explosive useful load cause to prop up at utmost to weaken rock mass, damage rock mass not too much
The increase for protecting workload is principle, while also needs to consider potential rock burst intensity and the validity of live supporting.
The utility model provides deep-lying tunnel rock burst relief structure that is a kind of double-deck while excavating in the same direction, should in deep-lying tunnel
Power concentrated area is by drilling, reasonable Arrangement blast hole and its arranged direction, using short drilling depth, multicycle Excavation blasting mode
Change rock mass shape, eliminate or reduce the energy accumulation level of rock mass weight, substantially improve construction safety（Including personal security
And equipment safety）；Driving progress is simultaneously effective ensure that, and on the premise of quality is ensured, shortens the duration.
Brief description of the drawings
Fig. 1 is provided by the utility model a kind of double-deck while deep-lying tunnel rock burst relief structure that is excavating in the same direction shows
It is intended to；
Fig. 2 is the sectional view in A-A ' directions in Fig. 1；
Fig. 3 is the sectional view in B-B ' directions in Fig. 1；
Fig. 4 is the sectional view in C-C ' directions in Fig. 2；
Fig. 5 is the sectional view in D-D ' directions in Fig. 3；
In figure：1- rock mass；2- upper stratas chamber；3- lower floors chamber；201- upper stratas apical pore；202- upper stratas mesopore；203- upper stratas
Lower opening；204- upper stratas bottom outlet；301- lower floors apical pore；302- lower floors mesopore；303- lower floors lower opening；304- lower floors bottom outlet.
Embodiment
The utility model is described in further detail with specific embodiment referring to the drawings.
Respectively be drilled with the excavation face of upper and lower two layers of chamber 2 and 3 of rock mass 1 between upper and lower two layers of chamber some groups it is quick-fried
Holes and control hole.12 blast holes and 4 control holes are drilled with the excavation face of each chamber.Each blast hole and control hole are uniform
Put in area of stress concentration, hole depth is to reach or through area of stress concentration as principle；Explosion number of perforations, pore size and explosive payload
At utmost to weaken rock mass, damage rock mass not too much causes the increase of support work amount as principle, while needs to consider potential
Rock burst intensity and live supporting validity.
Along upper strata chamber 2 in upper strata chamber 2（Cross section is in gateway opening type）Axis be sequentially arranged upper strata from top to bottom
Apical pore 201, upper strata mesopore 202, upper strata lower opening 203, and some upper strata bottom outlets 204 for putting of hole base fabric along upper strata chamber,
All holes are symmetric each along the axis of upper strata chamber 2；Upper strata apical pore 201, upper strata mesopore 202, upper strata lower opening 203
For blast hole, upper strata lower opening 204 is control hole.Upper strata apical pore 201 is provided with 4, is put in the arrangement of camber line two, wherein the row of highest one
Hole has two, and on same horizontal plane, a round also is located on same horizontal plane in addition；Upper strata mesopore 202 totally 4,
And on same horizontal plane, the spacing between two holes of arbitrary neighborhood is equal；Lower floor's lower opening 203 shares 4, and positioned at same
On one horizontal plane, the spacing between two holes of arbitrary neighborhood is equal；Upper strata bottom outlet 204 shares 4, is arranged in gateway opening type
Corresponding to the hole bottom surface of layer chamber on rock mass, and the spacing between two holes of arbitrary neighborhood is equal.
Along lower floor's chamber 3 in lower floor's chamber 3（Cross section is in gateway opening type）Axis be sequentially arranged lower floor from top to bottom
Apical pore 301, lower floor's mesopore 302, lower floor's lower opening 303, and lower floor's bottom outlet 304, lower floor's apical pore 301 are arranged on gateway opening type lower floor
Corresponding to the hole top surface of chamber on rock mass, all holes are symmetric each along the axis of lower floor's chamber 3；Lower floor's apical pore
301 be control hole；Lower floor's mesopore 302, lower floor's lower opening 303 and lower floor's bottom outlet 304 are blast hole.The cloth in the hole in lower floor's chamber 3
Put in mode except the arrangement of lower floor's apical pore 301 and lower floor's bottom outlet 304 and upper strata chamber 2 apical pore 201 and upper strata bottom outlet at the middle and upper levels
Outside 204 arrangement difference, the arrangement in other holes and the hole in upper strata chamber 2 is substantially similar.In lower floor's chamber 3,
Lower floor's apical pore 301 is arranged on corresponding to the hole top surface of gateway opening type lower floor chamber on rock mass, and lower floor's bottom outlet 304 is arranged on gateway opening
Corresponding to the barrel region bottom of type lower floor chamber on rock mass.
Because the emphasis of stress relieving is rock mass 1, therefore the upper and lower layer in the position bores upper strata bottom outlet 204 and lower floor's apical pore is
Control hole, it is horizontal direction, i.e., along tunnel excavation direction zero deflection, hole depth is 4.5 m, attaches and excavates border, and whole process does not fill
Explosive is carried, and respectively with should be greater than 0.5 m on the distance principle of upper strata lower opening 203 and lower floor's mesopore 302.
Upper strata apical pore 201 is horizontal, and pushes up about 0.4 m away from hole, and hole depth is about 4 m, and whole process loads explosive；Upper strata mesopore 202
Level simultaneously turns 5 ~ 6 degree or so to away from the lateral deviation of rock mass 1, and hole depth is about 4 m, loads explosive in the m of bottom 2.5 depth bounds, i.e.,
It is 2.5 m to load explosive segment length；Upper strata lower opening 203 is horizontal and turns 2 ~ 3 degree or so to away from the lateral deviation of rock mass 1, and hole depth is about 4
M, whole powder charge.
Lower floor's mesopore 302 is horizontal and turns 2 ~ 3 degree or so to away from the lateral deviation of rock mass 1, and hole depth is about 4 m, and whole process loads explosive；
Lower floor's lower opening 303 is horizontal and turns 2 ~ 3 degree or so to away from the lateral deviation of rock mass 1, and hole depth is about 4 m, in the m of bottom 2.5 depth bounds
Explosive is loaded, that is, it is 2.5 m to load explosive segment length；Lower floor's bottom outlet 304 is horizontal, and hole depth is about 4 m, and whole process loads explosive.Always
Body burst strength considers by 0.04 ~ 0.05 kg/T, digitized representation blast charging amount with release in the range of rock mass weight it
Than the influence that explosive type first can not be considered during, design.
During explosion, upper and lower two chambers need to complete drilling construction simultaneously.Preferred lower floor's chamber 3 preferentially detonates, during detonation
Preferential explosion lower floor mesopore 302, it is spaced 1 minute or so, explosion lower floor lower opening 303 and lower floor's bottom outlet 304, are spaced 5 seconds left sides successively
The right side, now lower floor's chamber 3 can not slag tap.
Interval at least 10 minutes（No maximum）Afterwards, then to upper strata chamber 2 detonate, preferential explosion upper strata apical pore 201 during detonation,
Interval 30 seconds or so, explosion upper strata lower opening 203 and upper strata mesopore 202, are spaced 1 minute or so between the two successively.
Preferentially go out the slag of upper strata chamber 2 after the completion of explosion, then the slag of Zai Chu lower floors chamber 3.
Above step is repeated in until completing the excavation of whole tunnel.
Above-mentioned embodiment is used for illustrating the utility model, preferred embodiment only of the present utility model, and
It is not that the utility model is limited, it is new to this practicality in spirit of the present utility model and scope of the claims
Any modification, equivalent substitution and improvements that type is made etc., both fall within the scope of protection of the utility model.
Claims (8)
1. deep-lying tunnel rock burst relief structure that is a kind of double-deck while excavating in the same direction, it is characterised in that described double-deck while in the same direction
The deep-lying tunnel rock burst relief structure of excavation includes upper strata chamber and lower floor's chamber, and upper strata chamber and lower floor's chamber are in arrangement up and down
On rock mass, the upper strata chamber and lower floor's chamber are gateway opening type；Distinguish from top to bottom on the rock mass of the upper strata chamber
Upper strata apical pore, upper strata mesopore, upper strata lower opening and upper strata bottom outlet are set, set respectively from top to bottom on the rock mass of lower floor's chamber
Lower floor's apical pore, lower floor's mesopore, lower floor's lower opening and lower floor's bottom outlet, in the upper strata apical pore, upper strata mesopore, upper strata lower opening and lower floor
Hole, lower floor's lower opening and lower floor's bottom outlet are blast hole, and the upper strata bottom outlet and lower floor's apical pore are control hole, are used to load in blast hole
Explosive, loading explosive is not used in control hole；The Dong Ding regions that the upper strata apical pore is arranged on gateway opening type upper strata chamber are corresponding
Rock mass on, the upper strata mesopore and upper strata lower opening are arranged on corresponding to the barrel region of gateway opening type upper strata chamber on rock mass,
The upper strata bottom outlet is arranged on corresponding to the hole bottom surface of gateway opening type upper strata chamber on rock mass；Lower floor's apical pore is arranged on city gate
Corresponding to the hole top surface of Dong Xing lower floors chamber on rock mass, lower floor's mesopore and lower floor's lower opening are arranged on gateway opening type lower floor chamber
Barrel region corresponding on rock mass, lower floor's bottom outlet is arranged on corresponding to the barrel region bottom of gateway opening type lower floor chamber
On rock mass.
2. deep-lying tunnel rock burst relief structure that is according to claim 1 a kind of double-deck while excavating in the same direction, its feature exist
In the upper strata apical pore is four, and four upper strata apical pores are arranged to two rows, and four upper strata apical pores are arranged on camber line.
3. deep-lying tunnel rock burst relief structure that is according to claim 1 a kind of double-deck while excavating in the same direction, its feature exist
In lower floor's apical pore is four, and four lower floor's apical pores are arranged to two rows, and four lower floor's apical pores are arranged in hole top projection in rock
On camber line on body.
4. deep-lying tunnel rock burst relief structure that is according to claim 1 a kind of double-deck while excavating in the same direction, its feature exist
In the upper strata mesopore, upper strata lower opening and upper strata bottom outlet are multiple and be separately positioned on same horizontal plane.
5. deep-lying tunnel rock burst relief structure that is according to claim 1 a kind of double-deck while excavating in the same direction, its feature exist
In lower floor's mesopore, lower floor's lower opening and lower floor's bottom outlet are multiple and be separately positioned on same horizontal plane.
6. deep-lying tunnel rock burst relief structure that is according to claim 1 a kind of double-deck while excavating in the same direction, its feature exist
In the hole depth length of the control hole is identical, and the hole depth length of the blast hole is identical；The hole depth of the control hole is longer than explosion
The hole depth in hole.
7. deep-lying tunnel rock burst relief structure that is according to claim 1 a kind of double-deck while excavating in the same direction, its feature exist
Arranged obliquely in, the upper strata mesopore and be 5 ~ 6 degree with the angle of horizontal direction, the upper strata lower opening arrange obliquely and with
The angle of horizontal direction is 2 ~ 3 degree；Lower floor's mesopore is arranged and is 2 ~ 3 degree with the angle of horizontal direction obliquely, under described
Layer lower opening is arranged and is 2 ~ 3 degree with the angle of horizontal direction obliquely.
8. deep-lying tunnel rock burst relief structure that is according to claim 1 a kind of double-deck while excavating in the same direction, its feature exist
In the hole depth length of the control hole is 4.5 m, and the hole depth length of the blast hole is 4 m；Upper strata bottom outlet, lower floor's apical pore point
0.5 m is not less than it with upper strata lower opening, the distance of lower opening mesopore.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720518954.0U CN206957714U (en) | 2017-05-11 | 2017-05-11 | Deep-lying tunnel rock burst relief structure that is a kind of double-deck while excavating in the same direction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720518954.0U CN206957714U (en) | 2017-05-11 | 2017-05-11 | Deep-lying tunnel rock burst relief structure that is a kind of double-deck while excavating in the same direction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060775A (en) * | 2017-05-11 | 2017-08-18 | 中国电建集团华东勘测设计研究院有限公司 | A kind of bilayer is while the deep-lying tunnel rock burst relief structure excavated in the same direction and its application |
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2017
- 2017-05-11 CN CN201720518954.0U patent/CN206957714U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060775A (en) * | 2017-05-11 | 2017-08-18 | 中国电建集团华东勘测设计研究院有限公司 | A kind of bilayer is while the deep-lying tunnel rock burst relief structure excavated in the same direction and its application |
| CN107060775B (en) * | 2017-05-11 | 2023-09-12 | 中国电建集团华东勘测设计研究院有限公司 | Double-layer simultaneous and homodromous excavation deep-buried tunnel rock burst releasing structure and application thereof |
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