CN104989409A - Full-face excavation method after vertical shaft small-face pore forming - Google Patents
Full-face excavation method after vertical shaft small-face pore forming Download PDFInfo
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- CN104989409A CN104989409A CN201510336301.6A CN201510336301A CN104989409A CN 104989409 A CN104989409 A CN 104989409A CN 201510336301 A CN201510336301 A CN 201510336301A CN 104989409 A CN104989409 A CN 104989409A
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Abstract
The invention discloses a full-face excavation method after vertical shaft small-face pore forming. The method comprises the following steps of: performing small-face pore forming; performing manual pore digging from top to bottom on the top of a tunnel; embedding a plurality of blasting points according to the calculation in advance; using a small-size hanging conveyor to be manually matched with the upper part ballast discharge after the blasting in each time; jetting concrete on a well wall; and alternately and cyclically performing each work procedure of pre digging, blasting, ballast discharge and concrete jetting on the well wall until the pore depth reaches the top of a main tunnel second lining; 2, removing the main tunnel second lining in the pore bottom range through blasting, wherein main tunnel second lining concrete subjected to the blasting removal falls onto the main tunnel inverted arch surface, and machinery is used for ballast discharge in a main tunnel; and 3, performing full-face pore forming; forming pores for blasting from top to bottom in the vertical shaft range; using machinery and labor for pouring stone ballast onto the main tunnel inverted arch surface along a small-face pore; using the machinery for ballast discharge in the main tunnel; and beating an anchor rod and spraying concrete on the well wall.
Description
Technical field
The present invention relates to shaft construction method technical field, specifically, relate to a kind of full face excavation method after vertical shaft light section pore-forming.
Background technology
Current shaft construction method mainly based on subway active well and vertical shaft for mine construction, all uses heavy mechanical equipment, and drop into comparatively large, section is comparatively large, and in tunnel, heavy mechanical equipment cannot use.Shaft sinking method mainly contains with reference to sky well construction: common law, suspended bulkhead raising method, climb tank method, deep hole method, boring method.
Common law: utilize the bottom-up driving of rock drilling platform, constructs safe not; According to from up to down tunneling, muck removal is comparatively difficult.
Suspended bulkhead raising method: first adopt light section pore-forming, then installs liftable cage as drilling platform, bottom-up driving.Machinery need be increased drop into, due to bottom-up driving, construct safe not, more outstanding when closing on through especially.
Climb tank method: first adopting the bottom-up driving 3 ~ 5m of common law, as climbing tank, cavern is installed, Dong Shiding, sidewall setting rockbolt installation track as the orbit of climbing tank, also will be installed as in lower passage simultaneously and climb the transmission device that tank provides power.Identical with putting forward tank method, climb tank as drilling platform, bottom-uply carry out tunneling construction.Equipment investment is comparatively large, due to bottom-up driving, constructs safe not.
Deep hole method: first drive up 3 ~ 4m compensation space above vertical shaft, installs deep hole rig on vertical shaft top, from up to down bores one group of parallel deep hole, then bottom-up segment blast by cross dimensions along well height.The method need upwards excavate 3 ~ 4m compensation space on vertical shaft top, and the lining cutting in interpenetration of vertical shaft post-compensation space is comparatively difficult, need increase deep hole rig, economical not, is exposed to below rock, there is potential safety hazard too although there are personnel when only having powder charge.
Boring method: have two kinds of modes, one is upper expansion formula, rig is arranged on vertical shaft top, with rock bit bore downwards pilot hole and bottom through after change reaming cutter, from bottom to top reaming formed need section.Another kind is lower expansion formula, and contrary with upper expansion formula, rig is arranged on below vertical shaft, upwards makes pilot hole, to UR after installation reaming cutter.The method need increase machinery and drop into, and is only applicable to and circular cross section.
Shaft extension method: from bottom to top light section counter dig brush subsequently large pit shaft and from top to bottom pit shaft tunneling boring extend two kinds.Wherein, the anti-pick of light section brushes large pit shaft subsequently from bottom to top: utilize common law, suspended bulkhead raising method, climb tank method, deep hole method, the anti-well of boring method bottom-up driving light section, for ventilating, pedestrian and feed create favorable conditions, then from up to down or the large anti-well of bottom-up brush to design section.The anti-well of light section is bottom-up driving, construction safety risk is larger, in addition raising according to common law, suspended bulkhead raising method, climb tank method, deep hole method, boring method, the shortcoming of said method will be there is, brush is carried out greatly to design section to anti-well, and non-once is excavated to design section, add the economic not and security risk of construction volume also can increase simultaneously, and the excavation of the borehole wall is simultaneously not easy to control.Pit shaft tunneling boring extends from top to bottom: from up to down excavate along vertical shaft tunneling boring.Muck removal is comparatively difficult.
In sum, all there is the problem of muck removal difficulty in existing shaft excavation method, so, develop a kind of construction safety, muck removal full face excavation method after vertical shaft light section pore-forming easily, just become the problem that insider needs solution badly.
Summary of the invention
For the above-mentioned technical problem in correlation technique, the present invention proposes a kind of full face excavation method after vertical shaft light section pore-forming, to solve problems of the prior art.
For realizing above-mentioned technical purpose, technical scheme of the present invention is achieved in that
A kind of full face excavation method after vertical shaft light section pore-forming, comprises the steps:
Step one: light section pore-forming, manually digging hole is carried out from top to bottom at tunnel top, according to calculated in advance, pre-buried some blow-up points, use Minitype swing machine hand fit top muck removal after every separate explosion and at borehole wall sprayed mortar, borehole, explosion, muck removal, borehole wall sprayed mortar each operation alternate cycles is carried out until light section hole hole depth arrives positive hole two serve as a contrast top;
Step 2: quick-friedly to serve as a contrast except the positive hole two in scope at the bottom of hole, light section hole, quick-fried remove after positive hole two serve as a contrast concrete and fall within inverted arch face, positive hole, in positive hole, utilize machinery to carry out muck removal;
Step 3: tunneling boring pore-forming, within the scope of vertical shaft, from up to down explosion is carried out in punching, utilize machinery, manually ballast be poured onto on inverted arch face, positive hole along light section hole, in positive hole, utilize machinery to carry out muck removal, and set anchor pole, sprayed mortar at the borehole wall, explosion, muck removal, the borehole wall sets anchor pole, each operation alternate cycles of sprayed mortar is carried out, wherein, last blast working is upper and lower to carry out simultaneously, top is carried out quick-fried except the construction of residue rock stratum, and bottom is carried out quick-fried positive hole two of removing within the scope of vertical shaft and served as a contrast concrete construction;
Step 4: do not set anchor pole position in step 3, after muck removal terminates, carries out construction of shotcrete in positive hole to it, carries out setting anchor bolt construction before vertical shaft lining cutting.
Further, in step one and step 2, light section bore dia is 1m, and longitudinal degree of depth of every separate explosion is about 1m, and the thickness of borehole wall sprayed mortar is 8cm.
Further, in step one and step 2, take directly to measure and excavate light section hole hole depth and Known designs well depth compares, thus determine that positive hole two serves as a contrast top residue depth of stratum.
Further, in step 3, after every separate explosion, around aperture, light section hole, absolute altitude should lower than shaft perimeter bottom surface 20cm, and the thickness of borehole wall sprayed mortar is 8cm, sets long φ 22 grouting rock bolt of 3m with 150 × 150cm quincuncial arrangement at shaft wall.
Further, in step 3, directly measure residue light section hole hole depth in construction, determine the depth of stratum of silo bottom apart from positive hole vault.
Further, in step 3, all vertical shaft bottom surface void quarrel is cleaned out after every separate explosion.
Beneficial effect of the present invention: 1, be applicable to build vertical shaft between inherent about two the parallel or passages that intersect in mine, tunnel, be particularly useful for the less operating mode of vertical shaft top edge and upper channel edge, do not need build in upper channel or dig cavern, shaft excavation can be carried out after upper channel lining cutting, constructs safer;
2, after light section pore-forming, the ballast of vertical shaft explosion can pour in positive hole, bottom along light section hole, then in positive hole, bottom, utilizes machinery to carry out muck removal, and construction more for convenience;
3, utilize original construction equipment, do not need to increase plant equipment and drop into, cost is low, simple to operate, is easy to grasp;
4, work progress is all from up to down carry out, and constructs safer.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is step one schematic diagram according to the embodiment of the present invention;
Fig. 2 is step one schematic diagram according to the embodiment of the present invention;
Fig. 3 is the step 2 schematic diagram according to the embodiment of the present invention;
Fig. 4 is the step 3 schematic diagram according to the embodiment of the present invention;
Fig. 5 is the step 3 schematic diagram according to the embodiment of the present invention;
Fig. 6 is the step 4 schematic diagram according to the embodiment of the present invention.
In figure:
1, positive hole two serves as a contrast; 2, Zheng Dong; 3, light section hole; 4, anchor pole; 5, vertical shaft; 6, Minitype swing machine; 7, positive inverted arch face, hole; 8, positive hole vault; 9, the borehole wall.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain, all belongs to the scope of protection of the invention.
As shown in figures 1 to 6, a kind of full face excavation method after vertical shaft light section pore-forming, comprises the steps:
Step one: light section pore-forming, manually digging hole is carried out from top to bottom at tunnel top, according to calculated in advance, pre-buried some blow-up points, use Minitype swing machine 6 hand fit top muck removal after every separate explosion and at the borehole wall 9 sprayed mortar, borehole, explosion, muck removal, borehole wall sprayed mortar each operation alternate cycles is carried out until light section hole 3 hole depth arrives positive hole two serve as a contrast 1 top;
Step 2: quick-friedly serve as a contrast 1 except the positive hole two in scope at the bottom of hole, light section hole 3, quick-fried remove after positive hole two serve as a contrast 1 concrete and fall within inverted arch face, positive hole 7, in positive hole 2, utilize machinery to carry out muck removal;
Step 3: tunneling boring pore-forming, in vertical shaft 5 scope, from up to down explosion is carried out in punching, utilize machinery, manually ballast be poured onto on inverted arch face, positive hole 7 along light section hole 3, in positive hole 2, utilize machinery to carry out muck removal, and set anchor pole 4, sprayed mortar at the borehole wall 9, explosion, muck removal, the borehole wall sets anchor pole, each operation alternate cycles of sprayed mortar is carried out, wherein, last blast working is upper and lower to carry out simultaneously, top is carried out quick-fried except the construction of residue rock stratum, and bottom is carried out quick-fried positive hole two of removing in vertical shaft 5 scope and served as a contrast 1 concrete construction;
Step 4: do not set anchor pole position in step 3, after muck removal terminates, carries out construction of shotcrete in positive hole 2 to it, carries out setting anchor bolt construction before vertical shaft 5 lining cutting.
In one embodiment, in step one and step 2, light section hole 3 diameter is 1m, and longitudinal degree of depth of every separate explosion is about 1m, and the thickness of borehole wall sprayed mortar is 8cm.
In one embodiment, in step one and step 2, take directly to measure and excavate light section hole 3 hole depth and Known designs well depth compares, thus determine that positive hole two serves as a contrast 1 top residue depth of stratum.
In one embodiment, in step 3, after every separate explosion, around aperture, light section hole 3, absolute altitude should lower than vertical shaft 5 periphery bottom surface 20cm, and the thickness of borehole wall sprayed mortar is 8cm, sets long φ 22 grouting rock bolt of 3m with 150 × 150cm quincuncial arrangement at vertical shaft 5 sidewall.
In one embodiment, in step 3, directly measure residue light section hole 3 hole depth in construction, determine the depth of stratum apart from positive hole vault 8 bottom vertical shaft 5.
In one embodiment, in step 3, all vertical shaft 5 bottom surface void quarrel is cleaned out after every separate explosion.
Conveniently understand technique scheme of the present invention, below by way of in concrete mode of occupation, technique scheme of the present invention is described in detail.
At light section pore-forming stage use Minitype swing machine 6 hand fit top muck removal and at the borehole wall 9 sprayed mortar, in the tunneling boring pore-forming stage, for ease of muck removal, borehole depth around aperture, light section hole 3 will be deepened during explosion, after explosion, around aperture, light section hole 3, absolute altitude should lower than vertical shaft 5 periphery bottom surface 20cm, residue light section hole 3 hole depth directly can be measured to determine the depth of stratum of silo bottom apart from positive hole vault 8 in construction, Figure 5 shows that vertical shaft 5 closes on through situation, vertical shaft 5 bottom surface is 60cm ~ 180cm apart from positive hole two depth of stratum served as a contrast between 1 concrete, Figure 6 shows that the through situation of vertical shaft 5, on last blast working needs, to carry out down simultaneously, top is carried out quick-fried except the construction of residue rock stratum, bottom is carried out the quick-fried positive hole two of vertical shaft 5 scope of removing and is served as a contrast 1 concrete construction, do not set anchor pole 4 position in Fig. 6 and after muck removal terminates, construction of shotcrete can be carried out in positive hole 2 to it, carry out setting anchor bolt construction before vertical shaft 5 lining cutting.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a full face excavation method after vertical shaft light section pore-forming, is characterized in that, comprise the steps:
Step one: light section pore-forming, manually digging hole is carried out from top to bottom at tunnel top, according to calculated in advance, pre-buried some blow-up points, use Minitype swing machine (6) hand fit top muck removal after every separate explosion and at the borehole wall (9) sprayed mortar, borehole, explosion, muck removal, borehole wall sprayed mortar each operation alternate cycles is carried out until light section hole (3) hole depth arrives positive hole two serve as a contrast (1) top;
Step 2: quick-friedly to serve as a contrast (1) except the positive hole two in scope at the bottom of light section hole (3) hole, quick-fried remove after positive hole two serve as a contrast (1) concrete and fall within inverted arch face, positive hole (7), in Zheng Dong (2), utilize machinery to carry out muck removal;
Step 3: tunneling boring pore-forming, in vertical shaft (5) scope, from up to down explosion is carried out in punching, utilize machinery, manually ballast is poured onto on inverted arch face, positive hole (7) along light section hole (3), in Zheng Dong (2), utilize machinery to carry out muck removal, and set anchor pole (4) at the borehole wall (9), sprayed mortar, explosion, muck removal, the borehole wall sets anchor pole, the each operation alternate cycles of sprayed mortar is carried out, wherein, on last blast working, to carry out down simultaneously, top is carried out quick-fried except the construction of residue rock stratum, bottom is carried out quick-fried positive hole two of removing in vertical shaft (5) scope and is served as a contrast (1) concrete construction,
Step 4: do not set anchor pole position in step 3, after muck removal terminates, carries out construction of shotcrete at Zheng Dong (2) to it, carries out setting anchor bolt construction before vertical shaft (5) lining cutting.
2. full face excavation method after vertical shaft light section pore-forming according to claim 1, is characterized in that, in step one and step 2, light section hole (3) diameter is 1m, and longitudinal degree of depth of every separate explosion is about 1m, and the thickness of borehole wall sprayed mortar is 8cm.
3. full face excavation method after vertical shaft light section pore-forming according to claim 2, it is characterized in that, in step one and step 2, take directly to measure and excavate light section hole (3) hole depth and Known designs well depth compares, thus determine that positive hole two serves as a contrast (1) top residue depth of stratum.
4. full face excavation method after vertical shaft light section pore-forming according to claim 3, it is characterized in that, in step 3, after every separate explosion, around light section hole (3) aperture, absolute altitude should lower than vertical shaft (5) periphery bottom surface 20cm, the thickness of borehole wall sprayed mortar is 8cm, sets long φ 22 grouting rock bolt of 3m with 150 × 150cm quincuncial arrangement at vertical shaft (5) sidewall.
5. full face excavation method after vertical shaft light section pore-forming according to claim 4, is characterized in that, in step 3, directly measures residue light section hole (3) hole depth in construction, determines the depth of stratum of vertical shaft (5) bottom apart from positive hole vault (8).
6. full face excavation method after vertical shaft light section pore-forming according to claim 5, is characterized in that, in step 3, all vertical shaft (5) bottom surface void quarrel is cleaned out after every separate explosion.
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| CN201510336301.6A CN104989409B (en) | 2015-06-17 | 2015-06-17 | A kind of full face tunneling method after vertical shaft light section pore-forming |
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| CN201510336301.6A CN104989409B (en) | 2015-06-17 | 2015-06-17 | A kind of full face tunneling method after vertical shaft light section pore-forming |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110206550A (en) * | 2019-05-27 | 2019-09-06 | 中铁十八局集团第四工程有限公司 | A kind of complicated geological excavates the construction of shield received well |
| CN112412467A (en) * | 2020-12-03 | 2021-02-26 | 中铁十二局集团有限公司 | Construction method of ventilation vertical shaft of 200-600 m for super-long road tunnel by' reverse shaft method |
| CN112855166A (en) * | 2021-01-04 | 2021-05-28 | 中煤科工集团重庆研究院有限公司 | Pressure drilling type construction method of gas-containing coal seam well bore under mountain land topographic condition |
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| JPH11190188A (en) * | 1997-12-26 | 1999-07-13 | Heiwa Construction Co Ltd | Building frame for shaft and sheet construction method |
| CN101349064A (en) * | 2008-08-26 | 2009-01-21 | 中国水利水电第五工程局 | Construction method of hydroelectric power station surge chamber vertical shaft under soft rock geological condition |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110206550A (en) * | 2019-05-27 | 2019-09-06 | 中铁十八局集团第四工程有限公司 | A kind of complicated geological excavates the construction of shield received well |
| CN112412467A (en) * | 2020-12-03 | 2021-02-26 | 中铁十二局集团有限公司 | Construction method of ventilation vertical shaft of 200-600 m for super-long road tunnel by' reverse shaft method |
| CN112855166A (en) * | 2021-01-04 | 2021-05-28 | 中煤科工集团重庆研究院有限公司 | Pressure drilling type construction method of gas-containing coal seam well bore under mountain land topographic condition |
| CN112855166B (en) * | 2021-01-04 | 2023-01-06 | 中煤科工集团重庆研究院有限公司 | Pressure drilling type construction method of gas-containing coal seam well bore under mountain land topographic condition |
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Inventor after: Yang Jinwen Inventor after: Yang He Inventor after: Zhu Weidong Inventor after: Wang Tao Inventor after: Zhang Xudong Inventor after: Lv Xiuhua Inventor after: Gong Xiangyang Inventor after: Lv Zhijun Inventor after: Li Wenjun Inventor after: Wang Haiyang Inventor before: Wang Tao Inventor before: Zhang Xudong Inventor before: Lv Xiuhua Inventor before: Gong Xiangyang Inventor before: Li Wenjun Inventor before: Wang Haiyang Inventor before: Yang He |
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