CN108643920A - A kind of blast working structure and construction method for the interim ditch in tunnel - Google Patents
A kind of blast working structure and construction method for the interim ditch in tunnel Download PDFInfo
- Publication number
- CN108643920A CN108643920A CN201810344180.3A CN201810344180A CN108643920A CN 108643920 A CN108643920 A CN 108643920A CN 201810344180 A CN201810344180 A CN 201810344180A CN 108643920 A CN108643920 A CN 108643920A
- Authority
- CN
- China
- Prior art keywords
- ditch
- interim
- eye
- interim ditch
- tunnel
- 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.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 28
- 238000009412 basement excavation Methods 0.000 claims abstract description 16
- 238000004880 explosion Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000011435 rock Substances 0.000 claims description 32
- 239000002360 explosive Substances 0.000 claims description 15
- 125000004122 cyclic group Chemical group 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000005641 tunneling Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 230000036541 health Effects 0.000 abstract description 5
- 230000009471 action Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 239000002893 slag Substances 0.000 abstract description 3
- 238000005422 blasting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/006—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by making use of blasting methods
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
A kind of blast working structure and construction method for the interim ditch in tunnel, the present invention is just meeting first cycle constructing structure and method using ditch eye lag tunnel, effectively reduce the clamping action of interim ditch eye explosion, promote demolition effect, it effectively controls roadway floor and backbreaks and repeat the interim ditch eye of explosion rectification, it reduces artificial, the input of material cost, it is horizontal to promote the comprehensive treatment of roadway highly civilized health, demolition effect with interim ditch is good, the advantages that applied widely, the secondary artificial and material input for mending big gun rectification in interim ditch is greatly reduced simultaneously, it effectively reduces artificial, material consumption, reduce the excavation cost in tunnel, increase income, in addition interim ditch is excavated timely, in place, effectively control road surface accumulated slag, seeping phenomenon, it is beneficial to the promotion of underground highly civilized health comprehensive treatment level.
Description
Technical field
The invention belongs to mine blasting construction fields, and in particular to a kind of blast working structure for the interim ditch in tunnel
And construction method.
Background technology
Currently, in the driving of development engineering, when to encounter rock Protodyakonov coefficient be f=8-12, rock is relatively hard, construction
Ditch eye is more than 1000mm with the depth that has a down dip of tunnel bottom eye synchronous construction, ditch eye, is more than minimum burden, explosion folder
It makes of greatly, demolition effect is poor, and foundation phenomenon is frequent, and the repetition explosion rectification of ditch eye causes firer's cost to waste, time-consuming to take
Power takes roadway floor rectification body to backbreak 300mm, roadway floor paving barren rock to solve the foundation phenomenon in interim ditch
Interim ditch is excavated out after 300mm, this method causes the expenses such as firer's cost, transportation cost to increase, while tunnel being caused to pass through
It is unsmooth.
Invention content
In order to solve the above technical problems, the present invention provides a kind of blast working structure for the interim ditch in tunnel and applying
Work method.
The present invention is achieved by the following technical programs.
A kind of constructing structure for the interim ditch in tunnel provided by the invention, including interim ditch, wait excavating interim water
Ditch, rock mass to be excavated and interim ditch eye, wherein interim ditch and wait that excavating interim ditch is respectively positioned on tunnel bottom, temporarily
Ditch with wait that excavating interim ditch connect, wait excavating the bottom that interim ditch extends to rock mass to be excavated；Interim ditch eye setting
In waiting excavating in interim ditch, at the center for waiting excavating interim ditch, the aperture of interim ditch eye is connect with interim ditch,
It is described wait excavating interim ditch and be located at the plane of rock mass to be excavated fallen back at a construction cyclic advance length toward access adit.
Further, the depth of the interim ditch eye is 350-450mm.
Further, the width in the interim ditch is 300-350mm, is highly 300-350mm.
Further, the eyelet plane of the interim ditch eye is parallel with waiting excavating the explosion scope of freedom in interim ditch.
Further, the eyelet depth of the interim ditch eye and roadway excavation rock mass cyclic advance are isometric.
Further, the explosive loading line density of the interim ditch eye is 0.3kg/m, and powder charge total amount is 0.6kg.
A kind of construction method using the interim ditch constructing structure in above-mentioned tunnel includes the following steps：
Step 1 organizes the normal driving of tunnel rock mass to be excavated, in tunneling process, tunnel rock mass construction to be excavated bottom
At the moment, the construction ditch eye not in the rock mass, ensures that the bottom plate after the roadway excavation is smooth；
Step 2 is moved back in roadway excavation rock mass at a construction circulation position, interim ditch of constructing, and at interim ditch
It constructs interim ditch eye, keeps the eyelet depth of interim ditch eye and roadway excavation rock mass cyclic advance isometric；
Step 3 installs explosive in interim ditch intraocular, and the powder charge line density of explosive is 0.3kg/m, and explosive payload is
0.6kg；
Step 4, the explosive for the interim ditch intraocular that detonates, then clears up demolition site.
Further, the construction size in interim ditch is 300mm × 300mm in the step 2.
Further, it when carrying out interim ditch eye construction in the step 2, is carried out less than at the 400mm of tunnelling bottom
It constructs into eye, the depth that has a down dip for drill steel of constructing is less than 200mm.
The beneficial effects of the present invention are：Implementation through the invention is just being met first using ditch eye lag tunnel and is being followed
Ring constructing structure and method effectively reduce the clamping action of interim ditch eye explosion, promote demolition effect, effectively control tunnel
Bottom plate is backbreak and is repeated explosion and rectifies and improves interim ditch eye, reduces artificial, material cost input, it is comprehensive to promote roadway highly civilized health
The level of improvement is closed, has many advantages, such as that the demolition effect in interim ditch is good, applied widely, while greatly reducing interim ditch two
The secondary artificial and material input for mending big gun rectification, effectively reduces artificial, material consumption, reduces the excavation cost in tunnel, increase warp
Ji is taken in, and interim ditch is excavated in time, in place in addition, is effectively controlled road surface accumulated slag, seeping phenomenon, is beneficial to underground civilization and defends
The promotion of raw comprehensive treatment level.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the A-A direction views of Fig. 1 of the present invention；
In figure：The interim ditches 1-, 2- wait excavating interim ditch, 3- rock mass to be excavated, the interim ditch eyes of 4-.
Specific implementation mode
Be described further below technical scheme of the present invention, but claimed range be not limited to it is described.
As shown in Figs. 1-2, a kind of constructing structure for the interim ditch in tunnel, including interim ditch 1, wait excavating interim water
Ditch 2, rock mass to be excavated 3 and interim ditch eye 4, wherein interim ditch 1 with wait that excavating interim ditch 2 is respectively positioned on tunnel bottom,
Interim ditch 1 with wait that excavating interim ditch 2 connect, wait excavating the bottom that interim ditch 2 extends to rock mass 3 to be excavated；Interim water
Ditch eye 4, which is set to, to be waited excavating in interim ditch 2, at the center for waiting excavating interim ditch 2, the aperture of interim ditch eye 4 with
Interim ditch 1 connects, it is described wait excavating interim ditch 2 and be located at the plane of rock mass 3 to be excavated followed toward access adit one construction of retroversion
At ring drilling depth length.
Further, the depth of the interim ditch eye 4 is 350-450mm.
Further, the width in the interim ditch 1 is 300-350mm, is highly 300-350mm.
Further, the eyelet plane of the interim ditch eye 4 is parallel with waiting excavating the explosion scope of freedom in interim ditch 2.
The eyelet of interim ditch eye 4 is parallel with the explosion scope of freedom, and the explosion clamping action that can be greatly reduced improves demolition effect.
Further, the eyelet depth of the interim ditch eye 4 and roadway excavation rock mass cyclic advance are isometric.
Further, the explosive loading line density of the interim ditch eye 4 is 0.3kg/m, and powder charge total amount is 0.6kg.
A kind of construction method using the interim ditch constructing structure in above-mentioned tunnel includes the following steps：
Step 1 organizes the normal driving of tunnel rock mass 3 to be excavated, and in tunneling process, tunnel rock mass 3 to be excavated is constructed
When bottom eye, ditch eye of constructing not in the rock mass ensures that the bottom plate after the roadway excavation is smooth；
Step 2 is moved back in roadway excavation rock mass at a construction circulation position, interim ditch 1 of constructing, and in interim ditch 1
The interim ditch eye 4 of place's construction, keeps the eyelet depth of interim ditch eye 4 and roadway excavation rock mass cyclic advance isometric；
Step 3 installs explosive in interim ditch eye 4, and the powder charge line density of explosive is 0.3kg/m, and explosive payload is
0.6kg；
Step 4, the explosive to detonate in interim ditch eye 4, then clears up demolition site.In addition, to prevent interim ditch eye
The non-fulgurite of roadway excavation rock mass is damaged when 4 explosion, is miss-fired, the auxiliary being arranged in interim ditch eye 4 and tunnel
Eye detonates with section.
Further, the construction size in interim ditch 1 is 300mm × 300mm in the step 2.
Further, when carrying out interim ditch eye 4 in the step 2 and constructing, at less than tunnelling bottom 400mm into
Traveling eye is constructed, and the depth that has a down dip for drill steel of constructing is less than 200mm.
The present invention is just meeting first cycle constructing structure and method using ditch eye lag tunnel, effectively reduces interim ditch
The clamping action of eye explosion, promotes demolition effect, effectively controls roadway floor and backbreaks and repeat the interim ditch eye of explosion rectification,
Artificial, material cost input is reduced, roadway highly civilized health comprehensive treatment level, the demolition effect with interim ditch are promoted
The advantages that good, applied widely, while the secondary artificial and material input for mending big gun rectification in interim ditch is greatly reduced, effectively drop
Low artificial, material consumption, reduces the excavation cost in tunnel, increases income, and interim ditch is excavated in time, in place in addition,
Road surface accumulated slag, seeping phenomenon effectively are controlled, is beneficial to the promotion of underground highly civilized health comprehensive treatment level.
Claims (9)
1. a kind of constructing structure for the interim ditch in tunnel, it is characterised in that：Including interim ditch (1), wait excavating interim water
Ditch (2), rock mass to be excavated (3) and interim ditch eye (4), wherein interim ditch (1) and wait excavating interim ditch (2) equal position
In tunnel bottom, interim ditch (1) with wait that excavating interim ditch (2) connect, wait that excavating interim ditch (2) extends to rock to be excavated
The bottom of body (3)；Interim ditch eye (4), which is set to, waits excavating in interim ditch (2), positioned at waiting excavating in interim ditch (2)
At the heart, the aperture of interim ditch eye (4) is connect with interim ditch (1), described to wait that excavating interim ditch (2) is located at rock mass to be excavated
(3) plane is fallen back toward access adit at a construction cyclic advance length.
2. being used for the constructing structure in the interim ditch in tunnel as described in claim 1, it is characterised in that：The interim ditch eye
(4) depth is 350-450mm.
3. being used for the constructing structure in the interim ditch in tunnel as described in claim 1, it is characterised in that：The interim ditch (1)
Width be 300-350mm, be highly 300-350mm.
4. being used for the constructing structure in the interim ditch in tunnel as described in claim 1, it is characterised in that：The interim ditch eye
(4) eyelet plane is parallel with waiting excavating the explosion scope of freedom in interim ditch (2).
5. being used for the constructing structure in the interim ditch in tunnel as described in claim 1, it is characterised in that：The interim ditch eye
(4) eyelet depth and roadway excavation rock mass cyclic advance are isometric.
6. being used for the constructing structure in the interim ditch in tunnel as described in claim 1, it is characterised in that：The interim ditch eye
(4) explosive loading line density is 0.3kg/m, and powder charge total amount is 0.6kg.
7. a kind of construction method using the interim ditch constructing structure in above-mentioned tunnel, it is characterised in that include the following steps：
Step 1, the normal driving of tissue tunnel rock mass to be excavated (3), in tunneling process, tunnel rock mass to be excavated (3) construction
When bottom eye, ditch eye of constructing not in the rock mass ensures that the bottom plate after the roadway excavation is smooth；
Step 2 is moved back in roadway excavation rock mass at a construction circulation position, interim ditch (1) of constructing, and in interim ditch (1)
The interim ditch eye (4) of place's construction, keeps the eyelet depth of interim ditch eye (4) and roadway excavation rock mass cyclic advance isometric；
Step 3 installs explosive in interim ditch eye (4), and the powder charge line density of explosive is 0.3kg/m, and explosive payload is
0.6kg；
Step 4, the explosive to detonate in interim ditch eye (4), then clears up demolition site.
8. construction method as claimed in claim 7, it is characterised in that：The construction size of interim ditch (1) in the step 2
For 300mm × 300mm.
9. construction method as claimed in claim 7, it is characterised in that：Interim ditch eye (4) construction is carried out in the step 2
When, it constructs into traveling eye at less than tunnelling bottom 400mm, the depth that has a down dip for drill steel of constructing is less than 200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810344180.3A CN108643920A (en) | 2018-04-17 | 2018-04-17 | A kind of blast working structure and construction method for the interim ditch in tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810344180.3A CN108643920A (en) | 2018-04-17 | 2018-04-17 | A kind of blast working structure and construction method for the interim ditch in tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108643920A true CN108643920A (en) | 2018-10-12 |
Family
ID=63746308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810344180.3A Pending CN108643920A (en) | 2018-04-17 | 2018-04-17 | A kind of blast working structure and construction method for the interim ditch in tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108643920A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61165490A (en) * | 1985-01-17 | 1986-07-26 | 清水建設株式会社 | Method and device for forming ditch |
| CN102296962A (en) * | 2011-06-14 | 2011-12-28 | 中国水电顾问集团华东勘测设计研究院 | Adverse slope excavating construction method of large-section tunnel in water-rich tunnel section |
| CN102678174A (en) * | 2012-05-28 | 2012-09-19 | 中交第一公路勘察设计研究院有限公司 | Tunnel drainage system passing through permafrost region and non-frozen ground region and arrangement method thereof |
| CN103291307A (en) * | 2013-05-22 | 2013-09-11 | 中南大学 | Advanced drainage method by aid of drilled holes for water-rich rock strata |
-
2018
- 2018-04-17 CN CN201810344180.3A patent/CN108643920A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61165490A (en) * | 1985-01-17 | 1986-07-26 | 清水建設株式会社 | Method and device for forming ditch |
| CN102296962A (en) * | 2011-06-14 | 2011-12-28 | 中国水电顾问集团华东勘测设计研究院 | Adverse slope excavating construction method of large-section tunnel in water-rich tunnel section |
| CN102678174A (en) * | 2012-05-28 | 2012-09-19 | 中交第一公路勘察设计研究院有限公司 | Tunnel drainage system passing through permafrost region and non-frozen ground region and arrangement method thereof |
| CN103291307A (en) * | 2013-05-22 | 2013-09-11 | 中南大学 | Advanced drainage method by aid of drilled holes for water-rich rock strata |
Non-Patent Citations (1)
| Title |
|---|
| 陈壮文、周晋华: "湘潭锰矿平巷一次成巷施工的经验", 《工业建筑》 * |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181012 |
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| RJ01 | Rejection of invention patent application after publication |