CN107605491A - A kind of tunneling method - Google Patents
A kind of tunneling method Download PDFInfo
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- CN107605491A CN107605491A CN201710826619.1A CN201710826619A CN107605491A CN 107605491 A CN107605491 A CN 107605491A CN 201710826619 A CN201710826619 A CN 201710826619A CN 107605491 A CN107605491 A CN 107605491A
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000005641 tunneling Effects 0.000 title claims abstract description 15
- 239000011435 rock Substances 0.000 claims abstract description 156
- 230000006378 damage Effects 0.000 claims abstract description 95
- 238000004880 explosion Methods 0.000 claims abstract description 34
- 238000005065 mining Methods 0.000 claims abstract description 27
- 238000009412 basement excavation Methods 0.000 claims description 27
- 208000027418 Wounds and injury Diseases 0.000 claims description 25
- 208000014674 injury Diseases 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
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- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- 239000007787 solid Substances 0.000 abstract description 7
- 230000001771 impaired effect Effects 0.000 description 8
- 238000001514 detection method Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000002360 explosive Substances 0.000 description 4
- 238000005422 blasting Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- LLJRXVHJOJRCSM-UHFFFAOYSA-N 3-pyridin-4-yl-1H-indole Chemical compound C=1NC2=CC=CC=C2C=1C1=CC=NC=C1 LLJRXVHJOJRCSM-UHFFFAOYSA-N 0.000 description 1
- 239000003708 ampul Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
Embodiments of the invention disclose a kind of tunneling method, are related to building engineering field, efficiently can excavate solid rock under conditions of surrounding enviroment are not influenceed.Methods described, usage mining equipment and standing Combined Mining, including：First blasthole is set on target rock and carries out Single Point Blow Up using first blasthole；Determine that the Single Point Blow Up damages to caused by the target rock, and determine the damage threshold corresponding to the mining ability of the excavating equipment；It is related to the damage threshold to carry out the distance between explosion, each second blasthole to the target rock that multiple second blastholes are set on the target rock；The target rock after explosion is excavated using the excavating equipment.The present invention can be used in tunnelling.
Description
Technical field
The present invention relates to construction engineering technical field, more particularly to a kind of tunneling method.
Background technology
In city underground, piping lane or other underground space Process of Engineering Construction, to make construction continuous and reducing to week
The interference in collarette border, usually using mechanical equivalent of light excavation, especially cantilevered rock ripper.But when running into solid rock, such as single shaft
Compression strength is more than 80MPa, and when rock is relatively complete, rock out engine efficiency is low, or even can not construct.According to tradition
Blasting Excavation mode, first, had a great influence to surrounding enviroment, second, needing to change construction technology, efficiency can not be protected.
The content of the invention
In view of this, the embodiment of the present invention provides a kind of tunneling method, can not influence the condition of surrounding enviroment
It is lower efficiently to excavate solid rock.
In a first aspect, the embodiment of the present invention provides a kind of tunneling method, usage mining equipment and standing joint
Excavate, methods described includes：First blasthole is set on target rock and carries out Single Point Blow Up using first blasthole；It is determined that
The Single Point Blow Up damages to caused by the target rock, and determines the damage corresponding to the mining ability of the excavating equipment
Threshold value；Multiple second blastholes are set on the target rock to carry out explosion, each second blasthole to the target rock
The distance between it is related to the damage threshold；The target rock after explosion is excavated using the excavating equipment.
With reference in a first aspect, in the first embodiment of first aspect, the determination Single Point Blow Up is to described
Damage caused by target rock, and determine that the damage threshold corresponding to the mining ability of the excavating equipment includes：With described
First blasthole is to set at least two exploration holes on any ray of origin；Determine the mesh between the two neighboring exploration hole
Mark the degree of injury of rock；The excavation target rock, the damage threshold are attempted with predetermined power using the excavating equipment
For the minimal damage degree for the part successfully excavated in the target rock.
With reference to the first embodiment of first aspect, in second of embodiment of first aspect, the exploration hole
The equidistantly distributed on the ray.
With reference to the first embodiment of first aspect, in the third embodiment of first aspect, the determination phase
The degree of injury of the target rock includes between adjacent two exploration holes：Sound wave is measured adjacent two in the target rock
The first spread speed between individual exploration hole；According to first spread speed and the sound wave measured in advance undamaged
The target rock in the second spread speed, determine the degree of injury of the target rock between two neighboring exploration hole.
With reference in a first aspect, in the 4th kind of embodiment of first aspect, the distance between each described second blasthole by
In the following manner determines：Damage threshold according to corresponding to the mining ability of the excavating equipment determines that the Single Point Blow Up is described
The excavating radius of excavating equipment manufacture；The distance between each described second blasthole is determined according to the excavating radius.
It is described described in the 5th kind of embodiment of first aspect with reference to the 4th kind of embodiment of first aspect
Multiple second blastholes are set to include to carry out explosion to the target rock on target rock：With the central point of the target rock
Centered on, it is equal to the excavation to the distance between multiple second blastholes, two neighboring second blasthole is symmetrically positioned about
2 times of radius.
It is described described in the 6th kind of embodiment of first aspect with reference to the 4th kind of embodiment of first aspect
Multiple second blastholes are set to include to carry out explosion to the target rock on target rock：Determine the excavation border in tunnel；From
The excavation border is sequentially arranged the distance between multiple second blastholes, two neighboring second blasthole to center and is equal to
2 times of the excavating radius, any second blasthole and the distance on the excavation border are more than default safe distance.
With reference to first aspect or first aspect the first to the 6th in any embodiment, at the 7th kind of first aspect
It is described that first blasthole is set on target rock and included using first blasthole progress Single Point Blow Up in embodiment：
First blasthole described in Drilling on the face of the target rock, a diameter of 42 millimeters of first blasthole or 45 millimeters, institute
The depth for stating the first blasthole is more than default 0.2 meter of excavating depth；Water coupling is carried out in first blasthole, and described
The aperture of first blasthole is filled blocking, and stemming length is more than 20 times of the diameter of first blasthole；Ignition charge is with right
The target rock carries out Single Point Blow Up.
With reference to first aspect or first aspect the first to the 6th in any embodiment, at the 8th kind of first aspect
It is described to set multiple second blastholes to include to carry out explosion to the target rock on the target rock in embodiment：
Multiple second blastholes are set on the face of the target rock；Water coupling is carried out in second blasthole；
By excavating equipment recession beyond 20 meters of the target rock；Simultaneously ignite or from centre to periphery successively ignition charge with
Explosion is carried out to the target rock.
The tunneling method that embodiments of the invention provide, can determine impaired target rock using Single Point Blow Up
In the damage threshold corresponding with the mining ability of excavating equipment, that is, determine to be mined the damage of equipment excavation with can not
The critical value of the damage of equipment excavation is mined, then arranges multiple second blastholes on target rock according to the damage threshold,
To make the damage that explosion is formed to target rock be both greater than the damage threshold, such excavating equipment can is to the mesh after explosion
Mark rock is smoothed out excavating, and has efficiently excavated solid rock under conditions of surrounding enviroment are not influenceed, has substantially increased tunnel
Digging efficiency.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of flow chart for the tunneling method that embodiments of the invention provide；
Fig. 2 is a kind of structural representation of the first blasthole and exploration hole in embodiments of the invention；
Fig. 3 is a kind of detail flowchart for the tunneling method that embodiments of the invention provide.
Embodiment
The embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.
It will be appreciated that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
Its embodiment, belongs to the scope of protection of the invention.
In embodiments of the invention, usage mining equipment coordinates with standing carries out tunnelling, in excavating equipment energy
Enough part usage mining equipment of successfully excavating is excavated, and overly hard in excavation target, the mining ability of excavating equipment is not enough into
Work(excavates part, first carries out standing to excavating target, and explosion degree of injury is defined by that can be mined equipment excavation.Its
In, standing refers to that quick-fried rear rock is largely split without falling, and can efficiently be excavated with excavating equipments such as rock rippers.
Fig. 1 is a kind of flow chart for the tunneling method that embodiments of the invention provide, as shown in figure 1, the present embodiment
Method, usage mining equipment and standing Combined Mining, this method can include：
S11, the first blasthole is set on target rock and carries out Single Point Blow Up using first blasthole；
Wherein, target rock refers to that hardness is higher, is difficult to tunnel using only excavating equipment, needs to carry out standing
Rock.First blasthole can be that a deep hole of the equipment Drillings such as electric drill is used on target rock, can be in the first blasthole
Load rendrock and explosion is carried out to target rock.Because the quantity of the first blasthole only has one, therefore utilize the first blasthole pair
The explosion that target rock is carried out is also known as Single Point Blow Up.Because Single Point Blow Up borehole blasting point is single, explosive strength is weaker, it is typically only capable to
Certain damage is caused to target rock and can not be by target rock fragmentation.Degree of injury and rock of the individual shot to target rock
The property of stone in itself is relevant, and is gradually reduced with the increase of the distance with the first blasthole.
In order to ensure that the excacation on the same day can be smoothed out, the first blasthole needs enough depth.Optionally, first
The depth that the depth of blasthole can plan to excavate than the same day is bigger, such as bigger 0.2 meter than same day plan excavating depth.First blasthole
The diameter of drill bit that is typically used with Drilling of diameter it is equal, in one embodiment of the invention, the first blasthole it is a diameter of
45 millimeters or 42 millimeters, certainly in other embodiments of the invention, the diameter of the first blasthole can also be other values, the present invention
Embodiment this is not limited.
S12, determine that the Single Point Blow Up damages to caused by the target rock, and determine the excavation of the excavating equipment
Damage threshold corresponding to ability；
It should be understood that Single Point Blow Up is relevant to property of the damage that target rock is formed with target rock in itself.If
Rock is finer and close in itself, hardness is higher, then Single Point Blow Up damages to caused by it may be smaller, if this body structure of rock
Loosely, hardness is relatively low, then the Single Point Blow Up under equal conditions damages to caused by it may be just larger.
In addition, the different parts in same target rock, due to the first borehole distance from difference, Single Point Blow Up causes
Damage it is also different.It is bigger apart from the nearlyer damage of blasthole, it is smaller apart from the more remote damage of blasthole.
The size of target damage of rock can quantitatively be calculated by degree of injury.Specifically, degree of injury can pass through
Target rock determines that degree of injury D meets following relation to the spread speed of sound wave：
Wherein, VP1For spread speed of the compressional wave in impaired target rock, VP0It is identical compressional wave in undamaged mesh
Mark the spread speed in rock.Crack is produced after being damaged due to rock, air entrance is had in crack, and sound wave is aerial
Spread speed is slower, therefore VP1Typically smaller than VP0, D is usually the real number between 0 to 1.
Degree of injury D represents the extent of damage of target rock, and D is bigger, impaired more serious, is more easily mined equipment digging
Pick, D is smaller, impaired slighter, is less susceptible to be mined equipment excavation.It should be understood that because same excavating equipment is with pre-
Its mining ability is to determine when if power excavates, therefore the impaired journey that the mining ability of presence one and excavating equipment matches
What degree, i.e. excavating equipment can be excavated successfully damages the critical value with the damage for the excavation that can not succeed, and is more than in target rock and is somebody's turn to do
The damage of critical value can be mined equipment and successfully excavate, and the damage less than the critical value can not all be mined equipment success
Excavate, the critical value is the damage threshold that excavating equipment is excavated.
It is in one embodiment of the invention, single in order to determine the damage threshold corresponding to the mining ability of excavating equipment
It can be proceeded as follows after point explosion：
At least two exploration holes are set on any ray using first blasthole as origin；
Determine the degree of injury of the target rock between the two neighboring exploration hole；
The excavation target rock is attempted with predetermined power using the excavating equipment, the damage threshold is the target
The minimal damage degree for the part successfully excavated in rock.
Optionally, the ray using the first blasthole as origin can be using the first blasthole as origin on the face of target rock
In the horizontal direction or the ray of vertical direction or 30 ° of elevation directions.Two or two can be arranged as required on the ray
Above exploration hole.The concrete structure of each exploration hole can be identical with the first blasthole, and difference is that exploration hole is not intended to explosion
, but for measuring velocity of wave in target rock, explosive is not loaded in exploration hole.
Specifically, in one embodiment of the invention, the damage of target rock between two neighboring exploration hole is determined
Degree may include：
Measure first spread speed of the sound wave in target rock between two neighboring exploration hole；
According to the second spread speed of the first spread speed and the sound wave measured in advance in undamaged target rock,
Determine the degree of injury of target rock between two neighboring exploration hole.
In order to preferably measure first spread speed of the compressional wave in impaired target rock, can be noted in exploration hole
Water, with the probe of water coincidence sonic test instrument, sound wave is inputted from an exploration hole, then sound wave is detected from adjacent exploration hole
Signal, so as to measure spread speed of the compressional wave between two adjacent exploration holes, i.e. the first spread speed.
Optionally, the quantity of exploration hole and spacing can according to the detection accuracy requirement to damage and investigative range requirement and
Adjustment, the detection more investigative ranges of hole number are bigger, and the smaller detection accuracy of spacing is higher, and the spacing between exploration hole can be with equal
Or.For the ease of the relation of demarcation degree of injury and distributing position, in one embodiment of the invention, exploration hole can be with
The equidistantly distributed on above-mentioned ray.
In order to obtain spread speed of the sound wave in undamaged target rock, i.e. the second spread speed, in the present invention
One embodiment in, can before Single Point Blow Up scene find with target rock quality identical sillar, it is desirable to the sillar
Without crack and structural plane, the longitudinal wave velocity of this rocks is measured by RSM-SY5N acoustic speedometers, i.e., rock is in not damaged
To the second spread speed of compressional wave.It can determine that according to the first spread speed and the second spread speed between two neighboring exploration hole
The degree of injury D of target rock, referring to formula (1).
S13, multiple second blastholes are set on the target rock to carry out explosion to the target rock, each described the
The distance between two blastholes are related to the damage threshold；
Specifically, the distance between each second blasthole can be determined by the following manner：
Damage threshold according to corresponding to the mining ability of excavating equipment determines the digging that Single Point Blow Up is excavating equipment manufacture
Dig radius；
The distance between each second blasthole is determined according to the excavating radius.
It should be understood that Single Point Blow Up to the degree of injury of target rock with the blasthole of distance first distance it is different without
Together, therefore, damage threshold is also substantially distributed in using the first blasthole as the center of circle, using a certain length as on the circle of radius.According to step
Corresponding relation between the degree of injury and distributing position that are determined in S12, you can determine the excavating radius.
For example, as shown in Fig. 2 in one embodiment of the invention, individual shot is carried out at the first blasthole O1
Afterwards, occurs different degrees of damage around O1.It has been sequentially distributed in a horizontal rays using the first blasthole O1 as origin
The distance between exploration hole A1, A2, A3, A4, A5, two neighboring exploration hole are 25 centimetres, and O1 and A1 distance are 30 centimetres.Such as
The degree of injury that fruit detects between exploration hole A1 and A2 is 0.7, and the degree of injury between exploration hole A2 and A3 is 0.6, detection
Degree of injury between hole A3 and A4 is 0.5, and the degree of injury between exploration hole A4 and A5 is 0.4, and excavating equipment is being attempted to dig
During pick, the rock between exploration hole A3 and A4 can be successfully excavated, but can not successfully excavate the rock between exploration hole A4 and A5,
It can then determine the degree of injury corresponding with the mining ability of excavating equipment for the i.e. excavation of the distance between 0.5, O1 and A4
Excavating radius of the equipment to the target rock.Using O1 as the center of circle, using the excavating radius as in the circle of radius, the institute of target rock
There is the degree of injury that part can be caused 0.5 and the above by individual shot, that is to say, that the target rock in this circle is all
Equipment excavation can be mined after individual shot.
Optionally, multiple second blastholes arranged on target rock both can successively arrange from center is outwards all, also may be used
First to determine outer perimeter, arrange that embodiments of the invention are not limited this together by periphery and center.For example, at this
In one embodiment of invention, multiple second blastholes are set on the target rock can to carry out explosion to the target rock
Including：Centered on the central point of the target rock, to being symmetrically positioned about multiple second blastholes, two neighboring second
The distance between blasthole is equal to 2 times of the excavating radius.In another embodiment of the present invention, on the target rock
Multiple second blastholes are set to may include to carry out explosion to the target rock：Determine the excavation border in tunnel；From the excavation
Border is sequentially arranged the distance between multiple second blastholes, two neighboring second blasthole to center and is equal to the excavation
2 times of radius, any second blasthole and the distance on the excavation border are more than default safe distance.Wherein, safety is preset
Distance is the circumference for protection path, reduces the distance set to the influence of peripheral facilities, that is to say, that blasthole should
It is arranged to as far as possible away from profile, to reduce the damage to periphery.
S14, the target rock after explosion is excavated using the excavating equipment.
After explosive progress explosion is loaded in the second blasthole, the explosion damage formed to target rock can be dug
Pick equipment is efficiently excavated, therefore substantially increases tunnelling efficiency.
The tunneling method that embodiments of the invention provide, can determine impaired target rock using Single Point Blow Up
In the damage threshold corresponding with the mining ability of excavating equipment, that is, determine to be mined the damage of equipment excavation with can not
The critical value of the damage of equipment excavation is mined, then arranges multiple second blastholes on target rock according to the damage threshold,
To make the damage that explosion is formed to target rock be both greater than the damage threshold, such excavating equipment can is to the mesh after explosion
Mark rock is smoothed out excavating, and has efficiently excavated solid rock under conditions of surrounding enviroment are not influenceed, has substantially increased tunnel
Digging efficiency.
Tunneling method provided by the invention is described in detail below by specific embodiment.
As shown in figure 3, the tunneling method in the present embodiment comprises the following steps：
Hard sillar to be excavated is found at S201, scene, it is desirable to without crack and structural plane.Tested the speed by RSM-SY5N sound waves
Instrument measures the longitudinal wave velocity of this rocks, i.e. rock ideal longitudinal wave velocity (second spread speed) in not damaged；
S202, center Drilling diameter 42 or the first blastholes of 45mm one in a complete rock face, hole depth are preferably greater than applied
Work day arranges cutting depth 0.2m.
S203, from low explosive, water coupling；
Specifically, charge diameter 32mm, borehole bottom places water bag and utilizes watrer ampoule stemming mixing back-filling blinding, average line
Degree of packing can be more slightly lower than presplit blasting linear charging density；Aperture stemming length is not less than 20 times of blasthole diameter, avoids producing
Raw 20 meters or so slungshot.
S204, ignition charge carry out Single Point Blow Up；
S205, multiple exploration holes are set on any ray using first blasthole as origin；
The first spread speed of S206, measurement sound wave in the target rock between two neighboring exploration hole；
S207, according to first spread speed and the sound wave measured in advance in the undamaged target rock
In the second spread speed, determine the degree of injury of target rock between two neighboring exploration hole；
S208, determine that the damage threshold is, when the excavating equipment excavates target rock with predetermined power, successfully excavate
Damaged portion corresponding to minimal damage degree；
Before such and crack is excavated using rock ripper and more develops solid rock, different developmental conditions are first selected
This rocks, using the velocity of longitudinal wave in acoustic detection this rocks, calculate damage of rock degree.Using rock ripper to not
This rocks with developmental condition are excavated, and choosing development machine can not efficiently be excavated in normal operation just
Developmental condition rock, the damage of rock degree under this developmental condition is defined as the damage that rock ripper excavates this rocks
Hinder threshold value.
S209, the damage threshold according to corresponding to the mining ability of excavating equipment determine that Single Point Blow Up is the excavating equipment
The excavating radius of manufacture；
S210, determine that the distance between each second blasthole is equal to 2 times of the excavating radius；
S211, set the distance between multiple second blastholes, the second blasthole true by step S210 on the target rock
It is fixed；
S212, carry out water coupling in second blasthole；
S213, by excavating equipment recession beyond 20 meters of the target rock；
S214 at the same ignite or from centre to periphery successively ignition charge with to the target rock carry out explosion；
Damage of rock degree after explosion is all higher than the damage threshold in step S208.
S215, usage mining equipment continue to excavate to the target rock after explosion.
Embodiments of the invention provide tunneling method, determined using Single Point Blow Up in impaired target rock with
The corresponding damage threshold of the mining ability of excavating equipment, then arranges multiple second according to the damage threshold on target rock
Blasthole, to make the damage that explosion is formed to target rock be both greater than the damage threshold, such excavating equipment can is to explosion
Target rock afterwards is smoothed out excavating, and has efficiently excavated solid rock under conditions of surrounding enviroment are not influenceed, has greatly improved
Tunnelling efficiency.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those
Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence " including one ... ", it is not excluded that
Other identical element in the process including the key element, method, article or equipment also be present.
Each embodiment in this specification is described by the way of related, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, the change or determination that can readily occur in, all should
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.
Claims (9)
1. a kind of tunneling method, it is characterised in that usage mining equipment and standing Combined Mining, methods described bag
Include：
First blasthole is set on target rock and carries out Single Point Blow Up using first blasthole；
Determine that the Single Point Blow Up damages to caused by the target rock, and determine that the mining ability institute of the excavating equipment is right
The damage threshold answered；
Set on the target rock multiple second blastholes with to the target rock carry out explosion, each second blasthole it
Between distance it is related to the damage threshold；
The target rock after explosion is excavated using the excavating equipment.
2. according to the method for claim 1, it is characterised in that described to determine that the Single Point Blow Up is made to the target rock
Into damage, and determine that the damage threshold corresponding to the mining ability of the excavating equipment includes：
At least two exploration holes are set on any ray using first blasthole as origin；
Determine the degree of injury of the target rock between the two neighboring exploration hole；
The excavation target rock is attempted with predetermined power using the excavating equipment, the damage threshold is the target rock
The minimal damage degree of the middle part successfully excavated.
3. according to the method for claim 2, it is characterised in that exploration hole equidistantly distributed on the ray.
4. according to the method for claim 2, it is characterised in that the mesh between determining the two neighboring exploration hole
The degree of injury of mark rock includes：
Measure first spread speed of the sound wave in the target rock between two neighboring exploration hole；
According to first spread speed and the sound wave measured in advance in the undamaged target rock second
Spread speed, determine the degree of injury of the target rock between two neighboring exploration hole.
5. according to the method for claim 1, it is characterised in that the distance between each described second blasthole is true by the following manner
It is fixed：
Damage threshold according to corresponding to the mining ability of the excavating equipment determines that the Single Point Blow Up is the excavating equipment
The excavating radius of manufacture；
The distance between each described second blasthole is determined according to the excavating radius.
6. according to the method for claim 5, it is characterised in that described that multiple second blastholes are set on the target rock
Included with carrying out explosion to the target rock：
Centered on the central point of the target rock, to being symmetrically positioned about multiple second blastholes, two neighboring second
The distance between blasthole is equal to 2 times of the excavating radius.
7. according to the method for claim 5, it is characterised in that described that multiple second blastholes are set on the target rock
Included with carrying out explosion to the target rock：
Determine the excavation border in tunnel；
Be sequentially arranged multiple second blastholes to center from the excavation border, between two neighboring second blasthole away from
From 2 times equal to the excavating radius, any second blasthole and the distance on the excavation border are more than default safe distance.
8. method according to any one of claim 1 to 7, it is characterised in that described to set first on target rock
Blasthole is simultaneously included using first blasthole progress Single Point Blow Up：
The first blasthole described in Drilling on the face of the target rock, a diameter of 42 millimeters of first blasthole or 45 millis
Rice, the depth of first blasthole are more than default 0.2 meter of excavating depth；
Water coupling is carried out in first blasthole, and blocking is filled in the aperture of first blasthole, blocks length
20 times of degree more than the diameter of first blasthole；
Ignition charge is with to target rock progress Single Point Blow Up.
9. method according to any one of claim 1 to 7, it is characterised in that described to be set on the target rock
Multiple second blastholes are included with carrying out explosion to the target rock：
Multiple second blastholes are set on the face of the target rock；
Water coupling is carried out in second blasthole；
By excavating equipment recession beyond 20 meters of the target rock；
Ignite simultaneously or explosion is carried out to the target rock from centre to periphery successively ignition charge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710826619.1A CN107605491B (en) | 2017-09-13 | 2017-09-13 | A kind of tunneling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710826619.1A CN107605491B (en) | 2017-09-13 | 2017-09-13 | A kind of tunneling method |
Publications (2)
| Publication Number | Publication Date |
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| CN107605491A true CN107605491A (en) | 2018-01-19 |
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| CN110440647A (en) * | 2018-05-02 | 2019-11-12 | 核工业北京地质研究院 | A kind of method for digging excavated based on full-face blast and development machine |
| CN110618045A (en) * | 2018-06-20 | 2019-12-27 | 核工业北京地质研究院 | Test method for calculating rock excavation parameters |
| CN110618249A (en) * | 2018-06-20 | 2019-12-27 | 核工业北京地质研究院 | Test method for geotechnical engineering excavation construction |
| CN110618248A (en) * | 2018-06-20 | 2019-12-27 | 核工业北京地质研究院 | Test method for calculating rock blasting parameters |
| CN110617979A (en) * | 2018-06-20 | 2019-12-27 | 核工业北京地质研究院 | Test method for calculating rock mechanical excavation parameters |
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