CN101285385B - Undermining method for three-dimensional pipe-curtain - Google Patents
Undermining method for three-dimensional pipe-curtain Download PDFInfo
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- CN101285385B CN101285385B CN2008100478446A CN200810047844A CN101285385B CN 101285385 B CN101285385 B CN 101285385B CN 2008100478446 A CN2008100478446 A CN 2008100478446A CN 200810047844 A CN200810047844 A CN 200810047844A CN 101285385 B CN101285385 B CN 101285385B
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Abstract
The invention discloses a three-dimensional pipe-curtain subsurface excavation method. The steps of the method are as follows: A. a vertical working well is formed at the circumference of an underground structure; B. a horizontal working channel is formed on the outer surface of the underground structure; C. a pipe roofing support is formed at the outer surface and a pipe roofing curtain is constructed inside the horizontal working channel; D. grouting and reinforcement are carried out by using pipe roofing steel pipes, and the grouting is carried out by pipe roofing to form a curtain after the pipe roofing construction inside the horizontal working channel is finished; E. digging is started; when the pipe roofing grouting curtain reaches the strength, the digging construction of soil massinside the three-dimensional curtain is carried out; afterwards, the construction of the underground structure is carried out. The method is simple and convenient, and safe and convenient in construction. Particularly, for a large span underground structure under a crossroad, the method only digs half of one side of a certain road, thus the method can ensure that the road is unblocked in the construction process. Accordingly, the method can be widely applied to projects with roads and other buildings, etc., such as subway stations of a city, road tunnels with large span, underground parking areas with large span and down-traversing tunnels under main roads of the city.
Description
Technical field
The present invention relates to a kind of Undermining method for three-dimensional pipe-roof, it is applicable to the construction of shallow embedding UNDERGROUND STRUCTURES.
Background technology
Along with the acceleration of Chinese Urbanization's process, under downtown roads, build Large Underground Structure and get more and more, as subway station, city road tunnel, underground parking or the like.At present, below existing road, build engineerings such as city underground station, city road tunnel, underground parking, mainly contain cut and cover method, hidden construction process and non-excavation pipe curtain method.Cut and cover method has not only destroyed environment, and original road is excavated, and has hindered the unimpeded of traffic, disturbs bigger to the city productive life.Relatively poor when the geology condition, when buried depth was dark, if adopt the hidden construction process construction, security risk was bigger, in case construction accident occurs, the social influence that causes is remarkable.Non-excavation pipe curtain method has been avoided the shortcoming of cut and cover method and hidden construction process substantially, but to being in the project at place, crossroad, still will a road wherein be excavated, and just can construct.Therefore how to find the shallow embedding UNDERGROUND STRUCTURES hidden construction process of a kind of suitable multiple ambient conditions and geological conditions very urgent.
Summary of the invention
The objective of the invention is to be to provide a kind of Undermining method for three-dimensional pipe-roof, method is easy, easy construction, especially for the UNDERGROUND STRUCTURES that is in below the crossroad, this method is only excavated half of certain bar road one side, in work progress, can guarantee The coast is clear, noiseless to the city productive life.
In order to realize above-mentioned task, the present invention adopts following technical measures:
The present invention relates to the novel tunneling construction method of a kind of shallow embedding UNDERGROUND STRUCTURES; comprise at first and form active well at the underground structure periphery; form the horizontal operation passage in the outside of underground structure then; external surface at underground structure forms three-dimensional pipe shed support at last; and utilize side pipe boron steel pipe to carry out grouting and reinforcing, under the protection of frame, underground structure is carried out excavation construction.
The invention solves the tunneling construction of city landform restricted area shallow embedding UNDERGROUND STRUCTURES, have wide future in engineering applications and market popularization value.
A kind of Undermining method for three-dimensional pipe-roof the steps include:
A, form vertical active well at underground structure periphery, this vertical active well can adopt hand excavation's pore-forming, also can adopt mechanical equivalent of light excavation.The size of vertical active well should satisfy the requirement of horizontal operation passage and underground structure excavation construction, in 3 * 5m～4 * 8m scope, select, vertical active well section configuration is rectangle or circle or polygon, and the support pattern of vertical active well is steel concrete supporting or diaphragm wall supporting or open caisson supporting.
B, form the horizontal operation passage in the underground outside of planning to build works, the horizontal operation passage adopts comparatively ripe at present pipe jacking method " Encyclopadia Sinica " or hidden construction process construction, the structural meterials of horizontal operation passage is steel concrete or steel pipe, shape can be circle, rectangle or polygon, and size can be selected in 2 * 2～3 * 3m scope.
C, form three-dimensional pipe shed support at the underground external surface of planning to build works, three-dimensional pipe canopy be meant by the slip casting of pipe boron steel pipe about the proposed building, about and before and after all form grouting curtain.Pipe canopy curtain construction method has incremental launching method (incremental launching method Process Discussion, Liu Dayang, " Sichuan building materials "), boring method etc., the diameter of pipe canopy is 100～400mm, spacing is 500～1500mm, and the pipe canopy is the steel pipe of interior concrete placing or the pvc pipe of interior hot-metal carburized steel reinforced concrete;
D, utilize side pipe boron steel pipe to carry out grouting and reinforcing.For the stable outside soil body, generally should consider to utilize the pipe canopy to carry out peripheral grouting and reinforcing.After pipe roof construction finishes in the horizontal operation passage, carry out slip casting, form curtain, the soil body is reinforced by the pipe canopy.
E, excavation construction.After the tube shed grouting curtain reaches intensity, carry out the excavation construction of the inner soil body of three-dimensional curtain, promptly can divide step, adopt mechanical equivalent of light excavation to go out the required space of underground structure step by step, carry out underground structure then and apply.
The present invention compared with prior art has the following advantages and effect:
(1) tunneling that is applicable to landform restricted area shallow embedding UNDERGROUND STRUCTURES is constructed;
(2) avoided the excavation of road as far as possible, do not had the blocked path traffic, disturbed little the city productive life;
(3) for the underground space utilization that is in below the crossroad, has bigger advantage.
Description of drawings
Fig. 1 Undermining method for three-dimensional pipe-roof layout plan
Fig. 2 Undermining method for three-dimensional pipe-roof construction I-I sectional drawing
Fig. 3 Undermining method for three-dimensional pipe-roof construction II-II sectional drawing
Fig. 4 Undermining method for three-dimensional pipe-roof construction III-III sectional drawing
Fig. 5 Undermining method for three-dimensional pipe-roof construction three-view diagram (six facial canal curtains)
Fig. 6 Undermining method for three-dimensional pipe-roof construction three-view diagram (five facial canal curtains)
The vertical active well of 1-wherein; 2-horizontal operation passage; The 3-curtain; The 4-road; The 5-building.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail:
According to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 as can be known, for being in road 4 following and road surrounding buildings thing 5 intensive areas, Undermining method for three-dimensional pipe-roof the steps include: for the construction in this location provides a kind of good solution
A, form vertical active well 1 at underground structure periphery, the size of vertical active well 1 generally should satisfy the requirement of horizontal operation passage 2 and underground structure excavation construction, generally can in 3 * 5m～4 * 8m scope, select, its section configuration generally can be rectangle, also can be the polygon of circular or other shapes, vertical active well can be according to 2～4 of geology condition setting, the support pattern of vertical active well 1 and the size and the section size of active well have relation, and ordinary priority is selected the steel concrete supporting for use.When the non-constant of geology condition, also can adopt diaphragm wall supporting or open caisson supporting.The effect of vertical active well 1 is for follow-up construction provides condition, can carry out backfill or as transport channel between the operating period and pipeline passway to active well after construction is finished.
B, form large-sized horizontal operation passage 2 at the external surface (containing side and bottom surface) of underground structure then.Adopting incremental launching method or other hidden construction process construction level service aisles 2 in vertical active well 1, is the construction technology of comparative maturity at present, and the efficiency of construction height is safe and reliable, and cost is not high.The structural meterials of horizontal operation passage 2 can be a steel concrete, also can be steel pipe, its shape can be circle, rectangle or polygon, its quantity can be adjusted between 2～8 according to geological conditions, its size can be selected in 2 * 2～3 * 3m scope, mainly should consider to satisfy the construction needs of next stage pipe canopy curtain 3.After pipe roof construction finishes, tackle it and carry out backfill, as the basis of pipe canopy curtain 3, also can be used as the part on permanent structure basis.Apply at the peripheral tubes curtain and the pushing tow pipe to be adopted concrete or reinforced concrete earthen backfill after finishing.
C, form pipe shed support at external surface.Construction pipe canopy curtain 3 in the horizontal operation passage, its job practices has multiple: incremental launching method, boring method etc., the diameter of pipe canopy generally can be selected in 100～400mm scope, spacing can be selected between 500～1500mm, the pipe canopy can be steel pipe (interior concrete placing), or pvc pipe (interior hot-metal carburized steel reinforced concrete).Since in advance the construction pore be trifle section steel pipe or plastic pipe, intensity is lower, generally should the pipe in fill concrete or steel concrete.For the stable outside soil body, generally should consider to utilize the pipe canopy to carry out perimeter reinforcement slip casting.
D, utilization pipe boron steel pipe carry out grouting and reinforcing.After pipe roof construction finishes in the horizontal operation passage 2, promptly carry out slip casting, form curtain 3, the soil body is reinforced by the pipe canopy.
E, excavation.After tube shed grouting curtain 3 reaches intensity, carry out the excavation construction of the three-dimensional curtain 3 inner soil bodys, carry out applying of underground structure subsequently.
Claims (3)
1. a Undermining method for three-dimensional pipe-roof the steps include:
A, form vertical active well (1) at underground structure periphery, in 3 * 5m～4 * 8m scope, select, vertical active well (1) section configuration is rectangle or circle or polygon, and the support pattern of vertical active well (1) is steel concrete supporting or diaphragm wall supporting or open caisson supporting;
B, form horizontal operation passage (2) at the external surface of underground structure, in vertical active well (1), adopt incremental launching method or hidden construction process construction level service aisle (2), the structural meterials of horizontal operation passage (2) is steel concrete or steel pipe, be shaped as circle, rectangle or polygon, size is selected in 2 * 2～3 * 3m scope;
C, form pipe shed support at the external surface of underground structure, construction tube shed grouting curtain (3) in horizontal operation passage (2), its job practices is incremental launching method or boring method, the diameter of pipe canopy is 100～400mm, spacing is 500～1500mm, and the pipe canopy is the steel pipe of interior concrete placing or the pvc pipe of interior hot-metal carburized steel reinforced concrete;
D, utilization pipe boron steel pipe carry out grouting and reinforcing, after the interior pipe roof construction of horizontal operation passage (2) finishes, carry out slip casting by the pipe canopy, form tube shed grouting curtain (3), and the soil body is reinforced;
E, excavation after tube shed grouting curtain (3) reaches intensity, carry out the excavation construction of the inner soil body of tube shed grouting curtain (3), carry out applying of underground structure subsequently.
2. a kind of Undermining method for three-dimensional pipe-roof according to claim 1 is characterized in that: described vertical active well (1) is provided with 2～4.
3. a kind of Undermining method for three-dimensional pipe-roof according to claim 1 is characterized in that: described horizontal operation passage (2) is provided with 2～8.
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| CN2008100478446A CN101285385B (en) | 2008-05-29 | 2008-05-29 | Undermining method for three-dimensional pipe-curtain |
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Cited By (1)
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| CN102744772B (en) * | 2012-07-30 | 2014-08-13 | 东南大学 | Porous concrete ball forming die of three-dimensional dislocation channel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102744772B (en) * | 2012-07-30 | 2014-08-13 | 东南大学 | Porous concrete ball forming die of three-dimensional dislocation channel |
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Owner name: WUHAN CCCC TRAFFIC ENGINEERING CO., LTD. Free format text: FORMER OWNER: CCCC SECOND HIGHWAY CONSULTANT CO., LTD. Effective date: 20121119 |
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Effective date of registration: 20121119 Address after: 430050, 498 parrot Avenue, Hanyang District, Hubei, Wuhan Patentee after: Wuhan CCCC Traffic Engineering Co., Ltd. Address before: 430056 No. 18, entrepreneurial road, Wuhan economic and Technological Development Zone, Hubei, Wuhan Patentee before: China Communications Second Highway Survey Design and Research Institute Co., Lt |