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 PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
upper strata
lower floor
chamber
hole
deep
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
CN201720518954.0U
Other languages
Chinese (zh)
Inventor
彭鹏
单治钢
李华
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 Huadong Engineering Corp Ltd
Original Assignee
PowerChina Huadong 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 Huadong Engineering Corp Ltd filed Critical PowerChina Huadong Engineering Corp Ltd
Priority to CN201720518954.0U priority Critical patent/CN206957714U/en
Application granted granted Critical
Publication of CN206957714U publication Critical patent/CN206957714U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Earth Drilling (AREA)

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

Deep-lying tunnel rock burst relief structure that is a kind of double-deck while excavating in the same direction
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.
CN201720518954.0U 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 Active CN206957714U (en)

Priority Applications (1)

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

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
CN206957714U true CN206957714U (en) 2018-02-02

Family

ID=61374875

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720518954.0U Active 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

Country Status (1)

Country Link
CN (1) CN206957714U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN107764144B (en) A kind of tunnel Millisecond Controlled Blasting method
CN101270967B (en) Stress-relief blasting method
CN105781560B (en) A kind of construction method of the remote base tunnel look-ahead explosion in super low coverage superimposing thread tunnel
CN108007285A (en) A kind of stone head deep hole sublevel is segmented efficient Cut Blasting method
CN103123247A (en) Damping blasting method for steep dip small crossing angle layered surrounding rock small-distance tunnel excavation
CN106091848B (en) It is a kind of to realize overlength, the method for high inclination-angle tunnel anchorage top bar explosion
CN102692164B (en) Stress unloading, water injecting and drilling and blasting method for longitudinal structure surface structural strong rockburst regions
CN101713290A (en) Method for clearing rock burst of full-mine laneway deep in mine
CN107035377A (en) A kind of construction method of tailwater tunnel excavation supporting
CN104482817B (en) A kind of deep-lying tunnel stress relieving presplit blasting method
CN110374600A (en) A kind of ultra close distance coal seam group stope drift active workings are error-free away from formula method for arranging
CN102937399A (en) Stress relief blasting method based on ground stress transient release
CN108301841A (en) The construction of advanced reserved side soil is led in highway large cross-section tunnel
CN107060773B (en) A kind of underground chamber drilling and blasting method damping excavation method of static(al) explosion presplitting shock insulation
CN109577989A (en) A kind of novel deeps mines shaft wall structure and construction method
CN206957714U (en) Deep-lying tunnel rock burst relief structure that is a kind of double-deck while excavating in the same direction
CN105065004B (en) A kind of Shallow Large Span rock tunnel Portal Section weak blast excavation construction method
CN206513372U (en) A kind of drilling and blasting method point pilot drive structure
CN102980453B (en) Water injection drilling and blasting method for unloading stress of structural strong rock burst area of horizontal structural surface
CN101493305A (en) Damping blasting method for tunnel diggin
CN110924398B (en) High-strength rock slope widening excavation construction method under condition of traffic protection
CN112432566A (en) Full-section rapid excavation method for large-section tunnel
CN108061491A (en) A kind of Pile Diameter is the bridge cylinder pile foundation blasting method of 1.4-1.6m
CN103185491A (en) Stress relieving blasting method for side wall rock pillar type rock burst of two synchronously tunneling deeply-buried tunnels
CN103075936B (en) Rock pillar rockburst step-by-step relief water filling blasting method in deep-buried tunnel penetrating process

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant