CN205537372U - Tunnel rock drilling engineering big gun hole subregion arrangement structure - Google Patents
Tunnel rock drilling engineering big gun hole subregion arrangement structure Download PDFInfo
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- CN205537372U CN205537372U CN201620024071.XU CN201620024071U CN205537372U CN 205537372 U CN205537372 U CN 205537372U CN 201620024071 U CN201620024071 U CN 201620024071U CN 205537372 U CN205537372 U CN 205537372U
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Abstract
The utility model discloses a tunnel rock drilling engineering big gun hole subregion arrangement structure, rock drilling work face are divided into undercutting district, expand groove district, supplementary avalanche district from top to bottom, supplementary collapsing is lifted qu heguang and is exploded the district, and the eye is bored respectively in each region has the big gun hole: the middle part of rock drilling work face leans on lower region to distinguish for the undercutting, the last lower region in the undercutting district of rock drilling work face is for expanding the groove district from top to bottom, and it is undercutting district big gun hole and supplementary avalanche district big gun hole and the supplementary connection zone who lifts district big gun hole that collapses to expand the groove district from top to bottom, the top connection zone who expands the groove district on the rock drilling work face distinguishes for supplementary avalanche, the district is lifted for supplementary collapsing in the lower below region of expanding the groove district of rock drilling work face, all ring edge of rock drilling work face distinguish, expand from top to bottom the groove district and assist the region in avalanche district to explode the district for light around the undercutting. The utility model is used for the big section rock drilling engineering in underground can controlled blasting vibrations and improvement blasting effect.
Description
Technical field
This utility model is a kind of for underground big cross section drilling engineering, has controlled blasting vibrations and improves a kind of engineering explosion scheme of demolition effect.
Background technology
As it is shown in figure 1, the quick-fried method of traditional brill, avalanche during explosion is essentially identical with Beng Tai district, respectively accounts for the 1/2 of rock drilling cross section.Simultaneously, it is more weak that traditional rock drilling section bores quick-fried control, when starting explosion, burst stress between big gun hole can produce to be cancelled out each other and disturbs, the power thus resulting in rendrock can not play low with blasting efficiency, and the biggest, during the situation that particularly geology of rock drilling section is more complicated to explosion negative effects such as the stress rupture of tunnel perimeter country rock and disturbances, it is possible to cause more serious consequence.
The quick-fried method of brill of traditional V-cut mode, it it is a kind of form of construction work being easier to grasp and have universality, its suitability is stronger, but during practice, geological conditions is not added with distinguishing by this mode, there is following phenomenon: wide-angle large resistancing line, strengthens slotting height, strengthen cut depth, add macropore explosive payload, strengthen undercut blast hole with section explosive payload, largest segment explosive payload difficulty control etc.；When explosion, stress rupture and disturbance to tunnel surrounding rock are bigger, during the situation that particularly geology of rock drilling section is more complicated, it is possible to cause more serious consequence.
Utility model content
The purpose of this utility model is: propose a kind of drilling engineering big gun hole, tunnel subregion arrangement, for underground big cross section drilling engineering, it is possible to controlled blasting shakes and improves demolition effect.
This utility model purpose is realized by following technical proposals:
A kind of drilling engineering big gun hole, tunnel subregion arrangement, it is characterised in that:
Rock drilling work surface is divided into slotting district, upper and lower Kuo Cao district, auxiliary caved area, auxiliary Beng Tai district and Guang Bao district, and each region jewel hole has a big gun hole:
Region on the lower, the middle part of rock drilling work surface is slotting district, it is to be combined by 3-4 row, the 10 above symmetrical horizontal tilt big gun holes of row, and at a distance of 30cm at the bottom of the hole that incline direction is big gun hole, left and right, between keyhole, burden value is 75cm, slotting height 1.5m, between big gun hole, slotting district, array pitch is 400～750mm；In the program, it is compared with the prior art, prior art generally wants 6-8 row, 6-8 row, between keyhole, burden generally wants 100cm, slotting height about 3m, big gun hole, this patent slotting district reduces discharging and adds, effectively reduces burden 20-30cm between keyhole, reduce slotting height and keyhole with section explosive payload, the blasting vibration that controlled blasting stone fling distance and reduction keyhole dose concentration cause to greatest extent.
The lower regions in the slotting district of rock drilling work surface is upper and lower Kuo Cao district, Kuo Cao district is big gun hole, slotting district and auxiliary caved area big gun hole and the join domain in auxiliary big gun hole, Beng Tai district up and down, between big gun hole, Kuo Cao district, array pitch is 500～800mm, and big gun hole incline direction points to the big gun hole, region connected；
The region that is connected above in the Shang Kuocao district of rock drilling work surface is auxiliary caved area, and between big gun hole, array pitch is more than 800mm, and big gun hole incline direction is consistent with big gun hole, Shang Kuocao district incline direction；
The lower zone in the Xia Kuocao district of rock drilling work surface is auxiliary Beng Tai district, and between big gun hole, array pitch is 800～1000mm, and auxiliary big gun hole, Beng Tai district incline direction is consistent with big gun hole, Xia Kuocao district incline direction；In the program, through crack can be effectively formed, obtain more preferable Smooth Blasting Effects.
The periphery circle zone of rock drilling work surface is Guang Bao district, and the corresponding Kuo Cao district up and down of its big gun hole incline direction is consistent with the big gun hole incline direction of auxiliary caved area, and the big gun hole in corresponding slotting district does not tilts, and leaves outside limb.
As selection, all boreholes all block with stemming, and stemming length is not less than 20cm.
Aforementioned this utility model main formula case and each further selection scheme thereof can be this utility model can use and claimed scheme with independent assortment to form multiple schemes；And this utility model; each selection can select combination in any with other; those skilled in the art can understand there is multiple combination according to prior art and common knowledge after understanding this utility model scheme, is the claimed technical scheme of this utility model, does not do at this exhaustive.
The beneficial effects of the utility model:
This patent is divided into slotting district, Kuo Cao district, auxiliary caved area, auxiliary Beng Tai district work surface, totally five quick-fried districts of work surface of Guang Bao district, each district relatively independent can complete partition explosion, the integrated distribution of dispersion blasting energy, reduces the injury to tunnel surrounding to greatest extent.
Due to the particularity of Tunnel Blasting, after the slotting district of this patent and Kuo Cao district complete explosion, form a pilot tunnel, expand and create more free face for postorder explosion, reduce ensuing blast difficulty, stably improve demolition effect.
Compared with conventional blast, this patent scheme completes the exchange of caved area and Beng Tai district, substantially increases the caved area proportion at whole work surface, and caved area medium can utilize self gravitation that demolition effect is produced impact in explosion, take full advantage of explosive energy, obtain more stable demolition effect.
Accompanying drawing explanation
Fig. 1 is that the big gun bore region of prior art arranges schematic diagram；
Fig. 2 is rock drilling work surface subregion schematic diagram of the present utility model；
Fig. 3 is the rock drilling work surface steel for shot schematic diagram of the high ferro single line of this utility model embodiment 1；
Fig. 4 is the rock drilling work surface steel for shot schematic diagram of the high ferro two-wire of this utility model embodiment 2；
Fig. 5 is the high ferro single line section steel for shot schematic diagram of prior art；
In figure, 1 is caved area, and 2 is Beng Tai district, and 3 is Guang Bao district, and 4 is auxiliary caved area, and 5 is Shang Kuocao district, and 6 is slotting district, and 7 is Xia Kuocao district, and 8 is auxiliary Beng Tai district, and 9 is inverted arch line.
Detailed description of the invention
Following non-limiting examples is used for this utility model is described.
Embodiment 1:
With reference to Fig. 2, shown in 3, a kind of drilling engineering big gun hole, tunnel subregion arrangement, rock drilling work surface is divided into slotting district, upper and lower Kuo Cao district, auxiliary caved area, auxiliary Beng Tai district and Guang Bao district, and at each region jewel hole pore-forming:
Region on the lower, the middle part of rock drilling work surface is slotting district, it is to be combined by 3-4 row, the 10 above symmetrical horizontal tilt big gun holes of row, and at a distance of 30cm at the bottom of the hole that incline direction is big gun hole, left and right, between keyhole, burden value is 75cm, slotting height 1.5m, between big gun hole, slotting district, array pitch is 400～750mm；
The lower regions in the slotting district of rock drilling work surface is upper and lower Kuo Cao district, Kuo Cao district is big gun hole, slotting district and auxiliary caved area big gun hole and the join domain in auxiliary big gun hole, Beng Tai district up and down, between big gun hole, Kuo Cao district, array pitch is 500～800mm, and big gun hole incline direction points to the big gun hole, region connected；
The region that is connected above in the Shang Kuocao district of rock drilling work surface is auxiliary caved area, and between big gun hole, array pitch is more than 800mm, and big gun hole incline direction is consistent with big gun hole, Shang Kuocao district incline direction；
The lower zone in the Xia Kuocao district of rock drilling work surface is auxiliary Beng Tai district, and between big gun hole, array pitch is 800～1000mm, and auxiliary big gun hole, Beng Tai district incline direction is consistent with big gun hole, Xia Kuocao district incline direction；
The periphery circle zone of rock drilling work surface is Guang Bao district, and the corresponding Kuo Cao district up and down of its big gun hole incline direction is consistent with the big gun hole incline direction of auxiliary caved area, and the big gun hole in corresponding slotting district does not tilts, and leaves outside limb.
The application of aforementioned utility model:
In drilling engineering construction of explosion, after using steel for shot structure of the present utility model, next step is exactly borehole filling: powder charge uses inverse initiation, not bottoming medicine, and powder charge is pressed section and arranged powder charge fragment packets, detonator " to be sat in the right seat ", not wrongly installed section and dose, all boreholes all block with stemming, and stemming length is not less than 20cm, except big gun hole, Guang Bao district is that in addition to bamboo chip adds primacord interval colligation explosive form, other all uses continuous charging structure；
Next step, open quick-fried rock drilling face blast again, and initiation net uses compound connection network, uses the non-electric shock conducting tube detonator of millisecond long delay 1-14 section, outside initiation net use with section low section detonator bunch and connect in hole:
Slotting district and upper and lower Kuo Cao district explosion, auxiliary big gun hole, slotting district in Kuo Cao district forms vallecular cavity and enlarged slot cavity volume up and down, auxiliary Beng Tai district explosion afterwards, auxiliary caved area explosion followed by, effective vallecular cavity that auxiliary caved area is formed after utilizing slotting district and Shang Kuocao district shot hole blasting, most row's explosion successively, last Guang Bao district explosion is gone up from draining into.For depositing dust, water bag can be used to complete the filling of jewel hole pore-forming explosive with resistance mud and blasting agent mixing method, all boreholes all block with stemming, and stemming length is not less than 20cm.
As example, taking certain high ferro Tunnel Engineering of aforementioned blasting scheme, as it is shown on figure 3, high ferro single line section steel for shot schematic diagram, in figure, the some end in big gun hole represents aperture, and lines represent big gun hole and point to.Slotting district is to be combined by 3 rows, the 10 symmetrical horizontal tilt big gun holes of row, Shang Kuocao district is that a slotting district row immediately above faces upward big gun hole, Xia Kuocao district is big-eared big gun hole under the row being close to below slotting district, auxiliary caved area is that 5 rows above Shang Kuocao district face upward big gun hole, auxiliary Beng Tai district is big-eared big gun hole under 1 row below Xia Kuocao district, and Guang Bao district is 1 circle big gun hole of the periphery of rock drilling work surface.(by Ao Ruikai company (orica), the ridge people are quick-fried produces jointly with south for explosion detonator preferred LP non-electrical high intensity high precision fuse blasting cap, a product researched and developed exclusively for tunnel and high drilling depth sub-terrain mines, its high accuracy, multi-segment, the feature of differentiation, can effectively realize to quick-fried can the control of release time, it is achieved explosion Expected Results).
Embodiment 2:
As shown in Figure 2,4, the present embodiment is substantially the same manner as Example 1, and its difference is, it is adaptable to high ferro two-wire.As shown in Figure 4, high ferro two-wire section steel for shot schematic diagram, slotting district is to be combined by 3 rows, the 14 symmetrical horizontal tilt big gun holes of row.
Comparative example 1:
As it is shown in figure 5, the high ferro single line section steel for shot schematic diagram of prior art.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, within should be included in protection domain of the present utility model.
Claims (2)
1. drilling engineering big gun hole, tunnel subregion arrangement, it is characterised in that: rock drilling work surface be divided into slotting district, upper and lower Kuo Cao district,
Auxiliary caved area, auxiliary Beng Tai district and Guang Bao district, each region jewel hole respectively has a big gun hole:
Region on the lower, the middle part of rock drilling work surface is slotting district, is by 3-4 row, 10 row above symmetrical horizontal tilt big gun hole combinations
Form, and at a distance of 30cm at the bottom of the hole that incline direction is big gun hole, left and right, between keyhole, burden value is 75cm, slotting height 1.5m,
Between big gun hole, slotting district, array pitch is 400～750mm；
The lower regions in the slotting district of rock drilling work surface is upper and lower Kuo Cao district, and upper and lower Kuo Cao district is big gun hole, slotting district and auxiliary caved area big gun hole
And the join domain in auxiliary big gun hole, Beng Tai district, between big gun hole, Kuo Cao district, array pitch is 500～800mm, and big gun hole incline direction points to and connected
Big gun hole, region；
The region that is connected above in the Shang Kuocao district of rock drilling work surface is auxiliary caved area, and between big gun hole, array pitch is more than 800mm, and big gun hole tilts
Direction is consistent with big gun hole, Shang Kuocao district incline direction；
The lower zone in the Xia Kuocao district of rock drilling work surface is auxiliary Beng Tai district, and between big gun hole, array pitch is 800～1000mm, assists Beng Tai district
Big gun hole incline direction is consistent with big gun hole, Xia Kuocao district incline direction；
The periphery circle zone of rock drilling work surface is Guang Bao district, the corresponding Kuo Cao district up and down of its big gun hole incline direction and the big gun hole of auxiliary caved area
Incline direction is consistent, and the big gun hole in corresponding slotting district does not tilts, and leaves outside limb.
2. drilling engineering big gun hole, tunnel as claimed in claim 1 subregion arrangement, it is characterised in that: all boreholes all block up with stemming
Plug, stemming length is not less than 20cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620024071.XU CN205537372U (en) | 2016-01-11 | 2016-01-11 | Tunnel rock drilling engineering big gun hole subregion arrangement structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107356167A (en) * | 2017-09-19 | 2017-11-17 | 中交公局厦门工程有限公司 | A kind of equidistant fan transfer blasting construction method in tunnel Tao Kuocao areas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107356167A (en) * | 2017-09-19 | 2017-11-17 | 中交公局厦门工程有限公司 | A kind of equidistant fan transfer blasting construction method in tunnel Tao Kuocao areas |
| CN107356167B (en) * | 2017-09-19 | 2019-01-15 | 中交一公局厦门工程有限公司 | A kind of equidistant fan transfer blasting construction method in the area tunnel Tao Kuocao |
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Effective date of registration: 20170724 Address after: 100081, room 6, floor 3, building 52, 611 South Main Street, Haidian District, Beijing, Zhongguancun Patentee after: Strong soldier (Beijing) Engineering Technology Co., Ltd. Address before: 618000 3 east side of three section of Tianshan Road, Deyang economic and Technological Development Zone, Sichuan, China Patentee before: DEYANG JIANBING ENGINEERING TECHNOLOGY CO., LTD. |