CN103437789B - Build waterproof structure, adopt the method for water proof mode constructing underground building - Google Patents
Build waterproof structure, adopt the method for water proof mode constructing underground building Download PDFInfo
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- CN103437789B CN103437789B CN201310356278.8A CN201310356278A CN103437789B CN 103437789 B CN103437789 B CN 103437789B CN 201310356278 A CN201310356278 A CN 201310356278A CN 103437789 B CN103437789 B CN 103437789B
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Abstract
The invention discloses a kind of method of building waterproof structure, adopting water proof mode constructing underground building, described method of building waterproof structure comprises: after the Underground Engineering Excavation vertical shaft for building, perpendicular to the bearing of trend of vertical shaft, at the periphery of the underground construction for building laying positioning steel tube; Between the periphery of the underground construction for building, adjacent positioning steel tube, perpendicular to the bearing of trend jacking micro steel tube of vertical shaft; Between adjacent positioning steel tube and micro steel tube, and be connected by fore shaft between adjacent micro steel tube, form the marine riser curtain around described peripheral a week; Slip casting in micro steel tube; Build in the underground space that marine riser curtain surrounds vertical with positioning steel tube, with vertical shaft sealing obstructive level body not etc. apart; Between adjacent sealing obstructive level body, formed and support along marine riser curtain inside wall, the hoop parallel with sealing obstructive level body; The waterproof structure that the method is built has better water proof effect, and makes marine riser curtain have stronger rigidity.
Description
Technical field
The present invention relates to underground construction technical field, particularly relate to a kind of method of building waterproof structure, adopting water proof mode constructing underground building.
Background technology
At present, the underground construction such as underground underpass, underground traffic tunnels, underground utilities tunnel and subway station build more and more.When carrying out these underground constructions and building, the method usually adopted has cut and cover method and hidden construction process.Cut and cover tunneling is simple, quick, but on the destruction of surrounding environment or impact comparatively large, and be only suitable for the construction under the more shallow condition of buried depth.Hidden construction process, when constructing, does not all excavate the ground of the underground construction part for building, less to surrounding environment influence, is particularly useful for building of city underground construction.
But the buried depth of some underground constructions can reach 20 ~ 40 meters at present, even enters underground bearing water region.Such as, in the construction plan of Beijing Metro, the transfer station of some cities cryptographically iron wire will there will be the even four lines transfers of three lines, and the construction of subway station or circuit may will be buried to less than 35 meters.Because Urban Underground water conservation requires more and more stricter, when constructing underground building, the mode that groundwater abstraction carries out stratum precipitation will not be allowed to implement.Common hidden construction process, as cavern-pile method, partial excavation method etc., all creates premised on construction operation condition by stratum precipitation, compared with great burying, be rich in underground water and under not allowing the condition of carrying out stratum precipitation during constructing underground building, no longer applicable.
At present, compared with great burying, be rich in underground water and under not allowing the condition of carrying out stratum precipitation during constructing underground building, engineering staff's general push pipe (or ram pipe) technology is at the first half of the underground construction for building or periphery jacking steel pipe (or pipe of other materials), (part does not adopt) fore shaft is adopted to be connected to form pipe curtain between steel pipe, in the underground space that pipe curtain surrounds or the canopy of pipe curtain protect lower enforcement soil excavation, and constructing underground building; Usually this construction method is called pipe-roof method.Usually, this pipe-roof method all carries out premised on the precipitation of stratum before prerequisite of constructing, to meet the requirement of construction operation; And pipe-roof method generally adopts micro-pipe-jacking technology, the diameter of the steel pipe of jacking is generally less than 1 meter, and when constructing underground building, pipe curtain carries out grouting and reinforcing by means of only in steel pipe, and its effect of bearing peripheral Water And Earth Pressures is more weak.
A kind of follow-on pipe-roof method is by the periphery jacking larger diameter steel pipe (being generally 2 meters) in the underground construction for building, carry out cutting in larger diameter steel duct, the constructing operation such as welding, each steel pipe is passed through bar connecting, reinforcing by the hoop of pipe curtain, formation hoop supports, and enhances the effect that pipe curtain bears the Water And Earth Pressures of its periphery.But when this follow-on pipe-roof method is constructed in larger diameter steel pipe, often all cut each steel pipe, the constructing operation such as welding, make difficulty of construction comparatively large, progress is slower; And this follow-on pipe-roof method does not make improvements for construction water proof aspect, makes the water proof effect of waterproof structure still not good, still needs to carry out stratum precipitation.
In sum, pipe-roof method of the prior art or follow-on pipe-roof method are when constructing underground building, all there is the problem of water proof poor effect, therefore, be necessary to provide a kind of waterproof structure construction method with better water proof effect, and adopt the method for water proof mode constructing underground building, thus make built waterproof structure have better water proof effect, and under the condition of not carrying out stratum precipitation, can carrying out building of underground construction without in hydrospace.
Summary of the invention
For the defect that above-mentioned prior art exists, the invention provides a kind of method of building waterproof structure, adopting water proof mode constructing underground building, its integrated artistic can provide that structure is more perfect, the water proof effect of more remarkable effect.
The invention provides a kind of method of building waterproof structure, comprising:
For the underground construction for building for after its excavating shaft, build described waterproof structure in the periphery of the described underground construction for building:
Perpendicular to the bearing of trend of described vertical shaft, at the periphery of the described underground construction for building laying at least two positioning steel tubes;
Between the periphery of the described underground construction for building, adjacent two positioning steel tubes, perpendicular to the bearing of trend jacking micro steel tube of described vertical shaft; And between adjacent positioning steel tube and micro steel tube, and be connected by fore shaft between adjacent two micro steel tube, form the marine riser curtain around described peripheral a week;
Slip casting in each micro steel tube, prevents the flexural deformation of described marine riser curtain;
Build in the underground space that described marine riser curtain surrounds multiple and described positioning steel tube vertical, with described vertical shaft after sealing obstructive level body not etc., build out the described waterproof structure be made up of the sealing obstructive level body in described marine riser curtain and the underground space that surrounds thereof;
The building process of one of them sealing obstructive level body is:
Choose at least two positioning steel tubes as construction steel pipe; Vertical with described construction steel pipe and and distance between described vertical shaft equal in the plane of the distance between this sealing obstructive level body and described vertical shaft pre-set, set multiple through hole in the underground space surrounded to described marine riser curtain in each construction steel pipe; After setting slip casting steel pipe by each through hole from the underground space surrounded to described marine riser curtain in described construction steel pipe, inject slurries to described slip casting steel pipe, described slurries are through the soil body penetration of described slip casting steel pipe to described slip casting steel pipe periphery; The soil body of infiltration slurries forms this sealing obstructive level body after reaching and setting water blockoff intensity.
Preferably, the length of the fore shaft of described positioning steel tube is identical with the length of described positioning steel tube; The length of the fore shaft of described micro steel tube is identical with the length of described micro steel tube; And described fore shaft comprises: fluted body fore shaft and male-type fore shaft;
Described between adjacent positioning steel tube and micro steel tube, and the mode be connected by fore shaft between adjacent two micro steel tube, be specially:
Described positioning steel tube is by its fluted body fore shaft/male-type fore shaft, and the male-type fore shaft/fluted body fore shaft of micro steel tube adjacent, placed side by side with it matches, to be connected and fixed micro steel tube adjacent with it; And
Described micro steel tube is by its fluted body fore shaft/male-type fore shaft, and the male-type fore shaft/fluted body fore shaft of micro steel tube adjacent, placed side by side with it matches, to be connected and fixed micro steel tube adjacent with it; And
The described bearing of trend perpendicular to described vertical shaft, to lay before at least two positioning steel tubes in the periphery of the described underground construction for building, also comprising:
On described male-type fore shaft, and smear or injecting sealing material in described fluted body fore shaft, prevent between adjacent positioning steel tube and micro steel tube, and be connected by fore shaft between adjacent two micro steel tube, and it is behind the scenes to form described marine riser, in the underground space that the groundwater seepage of the periphery of described marine riser curtain surrounds to described marine riser curtain.
Preferably, described micro steel tube fore shaft be positioned at side outside described marine riser curtain, along described micro steel tube bearing of trend, on the wall of described micro steel tube, set injected hole every setpoint distance; And each injected hole is configured with valve, described valve described micro steel tube by jacking to the described underground construction for building periphery before for closed condition; And
Described before slip casting in each micro steel tube, also comprise:
For each injected hole of described micro steel tube, after opening the valve of this injected hole, by this valve, grouting for water blocking is carried out to the soil body around the fore shaft of described micro steel tube.
Further, described build in the underground space that described marine riser curtain surrounds multiple and described positioning steel tube vertical, with described vertical shaft after sealing obstructive level body not etc., also comprise:
Between adjacent sealing obstructive level body, in parallel with described sealing obstructive level body plane, in the underground space surrounded to described marine riser curtain in each positioning steel tube, set two construction holes; Wherein, two construction holes are divided into the line of two fore shafts perpendicular to this positioning steel tube, cross the both sides of the plane of described line central point;
Along the lateral wall of described marine riser curtain inside wall, micro steel tube, perpendicular on the cloth set direction of positioning steel tube, construct as follows:
By each construction hole, hoop supporting steel pipe is set to the construction hole of adjacent positioning steel tube; In each positioning steel tube, after being welded by adjacent hoop supporting steel pipe, the hoop supporting steel pipe be weldingly connected is formed between adjacent sealing obstructive level body, the hoop parallel with described sealing obstructive level body supports;
Or, adopt Mining Method, excavate the soil body by each construction hole to the construction hole of adjacent positioning steel tube, and set up reinforcing bar grid in the space formed after the excavation soil body, form preliminary bracing; Excavating the soil body and along described marine riser curtain inside wall after through one week, in the space that the excavation soil body is formed, laying hoop support shaped steel; In each positioning steel tube, adjacent hoop is supported after shaped steel connects, be formed between adjacent sealing obstructive level body, the hoop parallel with described sealing obstructive level body support.
Preferably, the described bearing of trend perpendicular to described vertical shaft, the periphery of the described underground construction for building lay at least two positioning steel tubes, be specially:
Above and below the periphery described positioning steel tube being divided in couples the described underground construction for building, and two paired positioning steel tubes are laid in the perpendicular perpendicular to ground.
Further, described in after the hoop supporting steel pipe that is weldingly connected is formed between adjacent sealing obstructive level body, the hoop parallel with described sealing obstructive level body support, also comprise:
In the plane that described hoop supports place, between paired two positioning steel tubes, vertical supporting is set:
For paired two positioning steel tubes, in the underground space surrounded to described marine riser curtain in each positioning steel tube, set construction hole, and construction hole is positioned at described hoop supports the plane at place, the perpendicular perpendicular to described ground; From the construction hole one of them positioning steel tube to the construction hole jacking vertical supporting steel pipe on another positioning steel tube; The two ends of described vertical supporting steel pipe are individually fixed in after on described two positioning steel tubes in pairs, form described vertical supporting.
Further, described in the plane that described hoop supports place, between paired two positioning steel tubes, vertical supporting is set after, also comprise:
Slip casting in each positioning steel tube.
Preferably, the diameter of described positioning steel tube is greater than the diameter of described micro steel tube; Or the diameter of described positioning steel tube is more than or equal to 2 meters, the diameter of described micro steel tube is less than 2 meters.
Present invention also offers a kind of method adopting water proof mode constructing underground building, it is characterized in that, comprising:
The above-mentioned method of building waterproof structure is adopted, for it builds waterproof structure for the underground construction for building;
The described underground construction for building is built in the underground space that the marine riser curtain of described waterproof structure surrounds.
Preferably, describedly in the underground space that the marine riser curtain of described waterproof structure surrounds, build described underground construction be specially:
In the underground space that described marine riser curtain surrounds, building of the described underground construction for building is carried out from described vertical shaft;
At the sealing obstructive level body position place building described waterproof structure, this sealing obstructive level body is abolished building of the described underground construction for building of rear continuation.
Present invention also offers a kind of waterproof structure, comprising: around marine riser curtain and multiple sealing obstructive level body of the underground construction periphery for building;
Described marine riser curtain comprises: at least two positioning steel tubes, micro steel tube; Described positioning steel tube, being from perpendicular to the bearing of trend for the described vertical shaft built for the underground construction of building, being laid in the peripheral soil body of the described underground construction for building; Described micro steel tube, between adjacent two positioning steel tubes, be from described in the bearing of trend jacking perpendicular to described vertical shaft for the peripheral soil body of underground construction built; Between adjacent positioning steel tube and micro steel tube, and be connected by fore shaft between adjacent two micro steel tube; And be marked with slurries in each micro steel tube;
Described multiple sealing obstructive level body, is parallelly divided in the underground space that described marine riser curtain surrounds, vertical with described positioning steel tube, and with described vertical shaft at a distance of not etc.; Wherein,
Each sealing obstructive level body distance be located between described vertical shaft equals in the plane of the distance between this sealing obstructive level body and described vertical shaft pre-set, injecting slurries to the slip casting steel pipe that is arranged in described plane, described slurries are through described slip casting steel pipe after the soil body penetration of described slip casting steel pipe periphery, and the soil body of infiltration slurries is formed after reaching and setting water blockoff intensity; Wherein, described slip casting steel pipe chooses at least two positioning steel tubes as after construction steel pipe, after setting multiple through hole in the underground space surrounded to described marine riser curtain in described plane, in each construction steel pipe, set from the underground space surrounded to described marine riser curtain in described construction steel pipe by each through hole.
Preferably, the length of the fore shaft of described positioning steel tube is identical with the length of described positioning steel tube; The length of the fore shaft of described micro steel tube is identical with the length of described micro steel tube; And described fore shaft comprises: fluted body fore shaft and male-type fore shaft; And
Described positioning steel tube is by its fluted body fore shaft/male-type fore shaft, and the male-type fore shaft/fluted body fore shaft of micro steel tube adjacent, placed side by side with it matches, to be connected and fixed micro steel tube adjacent with it; And
Described micro steel tube is by its fluted body fore shaft/male-type fore shaft, and the male-type fore shaft/fluted body fore shaft of micro steel tube adjacent, placed side by side with it matches, to be connected and fixed micro steel tube adjacent with it; And
On described male-type fore shaft, and scribble in described fluted body fore shaft or be marked with encapsulant, in the underground space preventing the groundwater seepage of the periphery of described marine riser curtain from surrounding to described marine riser curtain.
Preferably, described micro steel tube fore shaft be positioned at side outside described marine riser curtain, along described micro steel tube bearing of trend, on the wall of described micro steel tube, set injected hole every setpoint distance; And each injected hole is configured with valve, described valve described micro steel tube by jacking to the described underground construction for building periphery before for closed condition; And
For each injected hole of described micro steel tube, the valve of this injected hole, for before slip casting in described micro steel tube, is opened this valve and is carried out grouting for water blocking to the soil body around the fore shaft of described micro steel tube.
Further, described waterproof structure, also comprises: multiple hoop supports;
Each hoop supports in plane between adjacent sealing obstructive level body, parallel with described sealing obstructive level body, is along the lateral wall of described marine riser curtain inside wall, micro steel tube, perpendicular on the cloth set direction of positioning steel tube:
By the construction hole be located on each positioning steel tube, hoop supporting steel pipe is set to the construction hole of adjacent positioning steel tube, and formed after adjacent hoop supporting steel pipe being welded in each positioning steel tube; Or,
Adopt Mining Method, excavate the soil body by the construction hole be located on each positioning steel tube to the construction hole of adjacent positioning steel tube, and set up reinforcing bar grid in the space formed after the excavation soil body, form preliminary bracing; Excavating the soil body and along described marine riser curtain inside wall after through one week, in the space that the excavation soil body is formed, laying hoop support shaped steel; In each positioning steel tube, adjacent hoop supported shaped steel and carry out connecting rear formation;
Wherein, described construction hole sets by the underground space surrounded to described marine riser curtain in each positioning steel tube; And the construction hole that each positioning steel tube sets is two, and two construction holes are divided into the line of two fore shafts perpendicular to this positioning steel tube, cross the both sides of the plane of described line central point.
Preferably, described positioning steel tube is divided into above and below the periphery of the described underground construction for building in couples, and paired two positioning steel tubes are laid in the perpendicular perpendicular to ground; And
For paired two positioning steel tubes, on each positioning steel tube, support in the plane at place, perpendicular perpendicular to described ground at described hoop and set construction hole, and this construction hole is by leading in this positioning steel tube in the underground space that described marine riser curtain surrounds.
Further, described waterproof structure, also comprises: vertical supporting;
Described vertical supporting, is arranged at described hoop and supports between two positioning steel tubes in the plane at place, paired; Be from the construction hole on a positioning steel tube paired two positioning steel tubes to the construction hole jacking vertical supporting steel pipe on another positioning steel tube, formed after the two ends of described vertical supporting steel pipe being individually fixed on described two positioning steel tubes in pairs.
Preferably, the diameter of described positioning steel tube is greater than the diameter of described micro steel tube; Or the diameter of described positioning steel tube is more than or equal to 2 meters, the diameter of described micro steel tube is less than 2 meters.
In technical solution of the present invention, when building waterproof structure, define around the underground construction marine riser curtain of a week for building, in the underground space preventing the groundwater seepage of the periphery of marine riser curtain from surrounding to marine riser curtain, and by building sealing obstructive level body in marine riser curtain, prevent in marine riser curtain is outer, the underground water of marine riser curtain bearing of trend enters marine riser curtain and sealing obstructive level body encloses space; Thus, enhance the water proof effect of waterproof structure, make the constructing without in hydrospace of can enclosing at marine riser curtain and sealing obstructive level body of building of underground construction, avoid and carry out stratum precipitation, saved construction cost, reduced difficulty of construction.And, can between adjacent sealing obstructive level body, the hoop formed along the lateral wall of the inside wall of marine riser curtain, micro steel tube supports, and in the plane that hoop supports place, vertical supporting is set between paired positioning steel tube, enhance the effect that marine riser curtain bears the Water And Earth Pressures of its periphery.
Accompanying drawing explanation
Fig. 1 is the flow chart building the method for waterproof structure of the embodiment of the present invention;
Fig. 2 is the vertical shaft of the embodiment of the present invention, positioning steel tube and the schematic diagram of the position relationship of underground construction for building;
Fig. 3 is the schematic diagram of the marine riser curtain formed in the shaft of the embodiment of the present invention;
Fig. 4 is the shape of fluted body fore shaft with male-type fore shaft of the embodiment of the present invention, the schematic diagram that is connected;
Fig. 5 is the schematic diagram that the sealing obstructive level body of the embodiment of the present invention and hoop support;
Fig. 6 is the schematic diagram of the slip casting steel pipe set of the embodiment of the present invention;
Fig. 7 is that the hoop of the embodiment of the present invention supports, vertical supporting is perpendicular to the schematic diagram on positioning steel tube cloth set direction.
Detailed description of the invention
For making object of the present invention, technical scheme and advantage clearly understand, enumerate preferred embodiment referring to accompanying drawing, the present invention is described in more detail.But it should be noted that, the many details listed in manual are only used to make reader to have a thorough understanding, even if do not have these specific details also can realize these aspects of the present invention to one or more aspect of the present invention.
Main thought of the present invention is, when building waterproof structure, in the vertical shaft excavated in advance, adopting the mode of no-dig technique to lay positioning steel tube and micro steel tube, forming the periphery marine riser curtain of a week around the underground construction for building; And multiple injected hole is preset on the wall of micro steel tube, slip casting can be carried out by injected hole to the soil body around fore shaft, thus strengthen the water proof effect of marine riser curtain;
And, can construct in the positioning steel tube that diameter is larger, in the underground space that marine riser curtain surrounds, form the sealing obstructive level body of multiple cloth set direction perpendicular to positioning steel tube, enter to prevent the underground water of marine riser curtain bearing of trend in the space that marine riser curtain and sealing obstructive level body enclose; Thus strengthen the water proof effect of waterproof structure, avoid carrying out stratum precipitation.
Technical scheme of the present invention is described in detail below in conjunction with accompanying drawing.Embodiments provide a kind of method of building waterproof structure, as shown in Figure 1, specifically comprise the steps:
S101: be the Underground Engineering Excavation vertical shaft for building.
Particularly, as shown in Figure 2, a vertical shaft 200 perpendicular to the ground can be excavated in the periphery of the underground construction 100 for building by the method for building vertical shaft of prior art, so that staff arrives job position by vertical shaft, and heading into positioning steel tube and micro steel tube provides construction space for follow-up.
S102: perpendicular to vertical shaft 200, lay at least two positioning steel tubes 300 in the periphery of the underground construction 100 for building.
Particularly, as shown in Figure 2, on the bearing of trend perpendicular to vertical shaft 200, the mode of no-dig technique (as pelta structure, push pipe or rammer pipe) is adopted to lay at least two positioning steel tubes 300 in the periphery of the underground construction 100 for building; Installation position and the quantity of positioning steel tube 300 are set by engineering staff; Preferably, corner position in the periphery of the underground construction 100 for building can lay positioning steel tube 300, if the underground construction 100 for building is multi span structure, can above the periphery of the underground construction 100 for building, the paired laying positioning steel tube 300 in below.
Such as, as shown in Figure 3, lay 8 positioning steel tubes 300 in the periphery of the underground construction 100 for building, and lay respectively at top and the below of the periphery of the underground construction 100 for building.
S103: between the periphery of the underground construction 100 for building, adjacent two positioning steel tubes 300, the bearing of trend perpendicular to vertical shaft 200 lays micro steel tube 310, forms the periphery marine riser curtain of a week around the underground construction 100 for building.
Particularly, as shown in Figure 3, between the periphery of the underground construction 100 for building, adjacent two positioning steel tubes 300, bearing of trend perpendicular to vertical shaft 200 lays micro steel tube 310, and between adjacent positioning steel tube and micro steel tube, and be connected by fore shaft between adjacent two micro steel tube, form the periphery marine riser curtain of a week around the underground construction 100 for building, thus in the underground space preventing the groundwater seepage of marine riser curtain periphery from surrounding to marine riser curtain.Wherein, the diameter parameters of positioning steel tube and micro steel tube can set according to drilling process, hydrogeology, construction manpower, cost; Fore shaft is welded in advance on the wall of each positioning steel tube 300 and each micro steel tube 310, and the length of the fore shaft of positioning steel tube 300, identical with the length of positioning steel tube 300; The length of the fore shaft of micro steel tube 310 is identical with the length of micro steel tube 310.
As shown in Figure 4, above-mentioned fore shaft generally includes: fluted body fore shaft 320 and male-type fore shaft 330; And fluted body fore shaft 320 at least comprises a groove part, male-type fore shaft 330 at least comprises a bossing, and the bossing of male-type fore shaft 330 can be inserted in the groove part of fluted body fore shaft 320.
Correspondingly, between adjacent positioning steel tube and micro steel tube, and the mode be connected by fore shaft between adjacent two micro steel tube, be specifically as follows: positioning steel tube 300 is by its fluted body fore shaft/male-type fore shaft, male-type fore shaft/fluted body the fore shaft of micro steel tube 310 adjacent, placed side by side with it matches, to be connected and fixed micro steel tube 310 adjacent with it; And micro steel tube 310 is by its fluted body fore shaft/male-type fore shaft, and the male-type fore shaft/fluted body fore shaft of micro steel tube adjacent, placed side by side with it matches, to be connected and fixed micro steel tube adjacent with it.And, certain gap is had between fluted body fore shaft 320 and male-type fore shaft 330, positioning steel tube 300 and the micro steel tube 310 that can make to be connected, and the bearing of trend of be connected two micro steel tube 310 along fore shaft in certain angle scope (as 0 degree to 10 degree) rotates, like this when positioning steel tube 300 and micro steel tube 310 are connected to form pipe curtain, there is higher flexibility.
More preferably, can also before positioning steel tube be laid and before micro steel tube jacking, on male-type fore shaft 330, and smear in fluted body fore shaft 320 or injecting sealing material (as butter etc.), in the underground space surrounded to marine riser curtain to prevent the groundwater seepage of the periphery of marine riser curtain better.
And, above-mentioned fore shaft also has guide effect, namely when jacking micro steel tube 310, can by the positioning steel tube 300 formerly laid or the fore shaft on the micro steel tube 310 of first jacking, control in the jacking direction of the micro steel tube 310 of rear jacking, the accuracy of marine riser curtain micro steel tube 310 jacking in forming process can be increased like this.
S104: slip casting in each micro steel tube 310.
Particularly, slip casting in each micro steel tube 310 (as injected cement paste), increases its rigidity, and prevents the flexural deformation of marine riser curtain, strengthen the effect that marine riser curtain bears the Water And Earth Pressures of its periphery.
More preferably, being positioned at side outside marine riser curtain, along the bearing of trend of micro steel tube 310, having set injected hole 340(as shown in Figure 4 every setpoint distance (about 0.5 meter) on the wall of micro steel tube 310 of fore shaft of micro steel tube 310); And each injected hole 340 is configured with valve, valve micro steel tube 310 by jacking to the underground construction 100 for building periphery before for closed condition.
Like this, treat that micro steel tube 310 jacking puts in place, to before slip casting in each micro steel tube 310, for each injected hole of micro steel tube 310, after opening the valve of this injected hole, by this valve, grouting for water blocking is carried out to the soil body around the fore shaft of micro steel tube 310, thus, strengthen the impermeable role of fore shaft, in the underground space preventing the groundwater seepage of marine riser curtain periphery from surrounding to marine riser curtain further.Wherein, by engineering staff before slip casting in each micro steel tube 310, valve can be opened, inject in the soil body around the fore shaft of micro steel tube 310 and there are the slurries of plugging function, after the soil body of infiltration slurries reaches water blockoff intensity, slip casting in micro steel tube 310.
S105: build multiple sealing obstructive level body 400 vertical with positioning steel tube 300 in the underground space that marine riser curtain surrounds.
Particularly, as shown in Figure 5, build in the underground space that marine riser curtain surrounds multiple vertical with the cloth set direction of positioning steel tube 300, with vertical shaft 200 at a distance of sealing obstructive level body 400 not etc., in prevent the underground water of marine riser curtain bearing of trend from entering space that marine riser curtain and sealing obstructive level body 400 enclose; That is, different sealing obstructive level bodies 400 is different from the distance of vertical shaft 200; In other words, in the underground space that marine riser curtain surrounds, the diverse location place along the cloth set direction of positioning steel tube 300 is provided with the sealing obstructive level body 400 vertical with the cloth set direction of positioning steel tube 300 respectively.
In fact, for each sealing obstructive level body 400, engineering staff can pre-set the distance between (design) this sealing obstructive level body 400 and vertical shaft 200, and constructs according to the distance pre-set, and builds this sealing obstructive level body 400.
The building process of one of them sealing obstructive level body 400 is: choose at least two positioning steel tubes 300 as construction steel pipe; According to the distance between this sealing obstructive level body 400 and vertical shaft 200 pre-setting (design), equal in the plane of the distance between this sealing obstructive level body 400 and vertical shaft 200 pre-set in vertical with construction steel pipe and between vertical shaft 200 distance, in the underground space surrounded to marine riser curtain in each construction steel pipe, set multiple through hole; Slip casting steel pipe 410(is set as shown in Figure 6 from the underground space surrounded to marine riser curtain in construction steel pipe by each through hole) after, inject slurries to slip casting steel pipe 410, slurries are through the soil body penetration of slip casting steel pipe 410 to slip casting steel pipe 410 periphery; The soil body of infiltration slurries forms this sealing obstructive level body 400 after reaching and setting water blockoff intensity.Wherein, the slurries injected to slip casting steel pipe can be selected according to the situation on the stratum at the underground construction place for building, and are specifically as follows the slurries with plugging function.
Like this, build sealing obstructive level body in the underground space that marine riser curtain surrounds after, build out the waterproof structure be made up of the sealing obstructive level body in marine riser curtain and the underground space that surrounds thereof.
Such as, Fig. 6 is the schematic diagram of the slip casting steel pipe that in Fig. 5, I-I section part sets; As shown in Figure 6, slip casting steel pipe 410 equals in the plane of the distance between this sealing obstructive level body 400 and vertical shaft 200 pre-set in vertical with construction steel pipe and between vertical shaft 200 distance distance; And engineering staff is when setting each slip casting steel pipe, each slip casting steel pipe can be made to be uniformly distributed in the underground space that marine riser curtain surrounds, like this, after passing through the slip casting of slip casting steel pipe, the soil body of infiltration slurries can form sealing obstructive level body 400 better as far as possible.
S106: the hoop formed between adjacent sealing obstructive level body 400 supports 600.
Particularly, as shown in Figure 5, the effect of the Water And Earth Pressures of its periphery is born for strengthening marine riser curtain, hoop can be formed support 600 between adjacent sealing obstructive level body 400, be specially: between adjacent sealing obstructive level body 400, in the plane parallel with sealing obstructive level body 400, two construction holes are set in the underground space surrounded to marine riser curtain in each positioning steel tube 300, two construction holes are be positioned at the through hole on positioning steel tube 300, and be divided into the line of two fore shafts perpendicular to this positioning steel tube 300, cross the both sides of the plane of described line central point,
Along the lateral wall of marine riser curtain inside wall, micro steel tube 310, perpendicular to positioning steel tube 300 cloth set direction, no-dig technique mode (as pipe jacking method) or Mining Method is adopted to construct as follows:
According to construction by pipeline jacking method, by each construction hole, to the construction hole jacking (or arrange) of adjacent positioning steel tube, hoop supporting steel pipe (as shown in Figure 7, and Fig. 7 is the schematic diagram of II-II section in Fig. 5) after, in each positioning steel tube, adjacent hoop supporting steel pipe is carried out weld (welding portion 610 as shown in Figure 7), the hoop supporting steel pipe be weldingly connected is formed between adjacent sealing obstructive level body 400, the hoop parallel with sealing obstructive level body 400 support 600;
According to mining method construction, the inside wall along marine riser curtain excavates the soil body by each construction hole to the construction hole of adjacent positioning steel tube, and preliminary bracing is carried out in the space adopting the reinforcing bar grid of a determining deviation (as 0.5 meter) to split excavator body formation; The excavation soil body also, after through one week, is laid hoop and is supported shaped steel in the space formed; In each positioning steel tube, hoop is supported shaped steel and welds, the hoop that is weldingly connected supports shaped steel, and between adjacent sealing obstructive level body 400, the hoop parallel with sealing obstructive level body 400 support 600.
Like this, can only carry out in positioning steel tube inside cutting, the constructing operation such as welding, the lateral wall along marine riser curtain inside wall, micro steel tube forms hoop and supports 600, avoids the constructing operation such as the cutting to micro steel tube, welding, reduce difficulty of construction, thus improve construction speed; And after forming hoop support 600, to slip casting in hoop supporting steel pipe, after slurries (as cement paste) reach intensity, the effect that marine riser curtain bears the Water And Earth Pressures of its periphery can also be further enhancing.
Preferably, because the sealing obstructive level body 400 pairs of marine riser curtains built also have certain supporting role, hoop can be formed in the centre position of adjacent two sealing obstructive level bodies 400 thus and support 600, like this, marine riser curtain can be made relatively more even perpendicular to the support force that positioning steel tube 300 direction is subject to, strengthen the effect that marine riser curtain bears the Water And Earth Pressures of its periphery further.
Usually, the diameter of positioning steel tube is greater than the diameter of micro steel tube; Or the diameter of positioning steel tube is more than or equal to 2 meters (as 3 meters), the diameter of micro steel tube is less than 2 meters (as 1 meters); Like this, engineering staff etc. can be facilitated to construct in positioning steel tube inside, and, be convenient in positioning steel tube, carry out constructing operation and support 600 to form hoop.
Further, above and below the periphery that positioning steel tube can also be divided in couples the underground construction for building, and in the perpendicular making two paired positioning steel tubes be laid in perpendicular to ground (as shown in Figure 7), like this, if the underground construction for building is multi span structure, then after formation hoop supports 600, vertical supporting 620 can be set in the plane that hoop supports 600 places; Wherein, the setting of vertical supporting 620 is specifically as follows: for paired two positioning steel tubes, set construction hole in the underground space surrounded to marine riser curtain in each positioning steel tube, and construction hole is positioned at hoop supports the plane at 600 places and the perpendicular perpendicular to ground; From the construction hole one of them positioning steel tube to the construction hole jacking vertical supporting steel pipe on another positioning steel tube; A positioning steel tube is interior to slip casting in vertical supporting steel pipe wherein, after slurries (as cement paste) reach intensity, forms vertical supporting 620.Wherein, (as welding) is fixed respectively on paired two positioning steel tubes 300 in the two ends of vertical supporting 620.Therefore, further enhancing the effect that marine riser curtain bears its peripheral Water And Earth Pressures.
S107: slip casting in each positioning steel tube 300.
Particularly, after forming annular brace 600 in above-mentioned steps S106, in this step to slip casting in each positioning steel tube 300, the rigidity being supported the waterproof structure that 600 are formed by marine riser curtain, sealing obstructive level body 400 and hoop can be increased further.。Wherein, slip casting in each positioning steel tube, can reach certain intensity after the slurries (as cement paste) of injection solidify, can increase the rigidity of waterproof structure.
To the underground construction for building, complete after building waterproof structure, constructing underground building in the underground space that the marine riser curtain of waterproof structure surrounds, be specifically as follows: from vertical shaft, in the underground space that marine riser curtain surrounds, carry out building of underground construction, at the sealing obstructive level body position place building waterproof structure, this sealing obstructive level body is abolished building of rear continuation underground construction.Further, after the permanent structure of the underground construction of building reaches intensity, remove vertical supporting.
The present inventor will utilize said method to build waterproof structure, and the method for building of carrying out underground construction is referred to as large pipe-roof method (SPR, SuperPipeRoofMethod).
Wherein, when constructing underground building, the soil body in the underground space can encircled a city to marine riser curtain by the method such as benching tunnelling method, shed frame method is excavated, and different structural shapes can be formed to the underground construction for building, such as, multiple arch multispan, singly encircle single span, flat top wall, the bent wall of flat-top etc.; Because the water proof effect of the waterproof structure of underground construction built is better, avoids stratum precipitation, therefore, high efficiency the soil body can be excavated, improve construction speed during constructing underground building.Further, in the process of constructing underground building, the cross binding perpendicular to vertical supporting can also be set in the plane that hoop supports place, strengthen the effect that marine riser curtain bears its peripheral Water And Earth Pressures further.
And marine riser curtain only as initial stage interim canopy protection structure, can also double as initial stage interim canopy protection structure and permanent two lining structures; If using marine riser curtain as initial stage interim canopy protection structure, carrying out soil excavation, and after the waterproofing course of the underground construction for building is set in the underground space that marine riser curtain surrounds, apply the stressed concrete frame structure of complete liner (facing cob wall plate thickness is 600 ~ 900mm);
If pipe curtain to be doubled as initial stage interim canopy protection structure and permanent two lining structures, after carrying out soil excavation, and after the waterproofing course of the underground construction for building is set in the underground space that marine riser curtain surrounds, apply thin layer liner waterproof concrete structure (facing cob wall plate thickness is 300 ~ 500mm); And the effect of positioning steel tube in permanent two lining structures that can be larger according to diameter, does partial cut or retention, and outward appearance process is done to the positioning steel tube retained.
In fact, underground construction for building also can comprise some accessory structures, and for some accessory structures of the underground construction for building, can by the construction method of waterproof structure of the present invention, the waterproof structure of the waterproof structure of accessory structure with the underground construction for building is connected, and can arrange the ring beam of inner lining concrete structure at interface, or the position of the hoop support adjusted in marine riser curtain strengthens the supporting role of interface.
Based on the above-mentioned method of building waterproof structure, the waterproof structure built, as illustrated in figs. 2-7, comprising: around marine riser curtain and multiple sealing obstructive level body 400 of the periphery of the underground construction 100 for building.
Wherein, marine riser curtain specifically comprises: at least two positioning steel tubes 300, micro steel tube 310; Positioning steel tube 300, being from the bearing of trend perpendicular to the vertical shaft 200 built for the underground construction 100 for building, being laid in the peripheral soil body of the underground construction 100 for building; Micro steel tube 310, between adjacent two positioning steel tubes 300, is for the peripheral soil body of underground construction 100 built from the bearing of trend jacking perpendicular to vertical shaft 200; Between adjacent positioning steel tube and micro steel tube, and be connected by fore shaft between adjacent two micro steel tube; And be marked with slurries in each micro steel tube.
Multiple sealing obstructive level body 400, parallelly be divided in the underground space that marine riser curtain surrounds, vertical with positioning steel tube 300, and with vertical shaft 200 at a distance of not etc., in prevent the underground water of marine riser curtain bearing of trend from entering space that marine riser curtain and sealing obstructive level body enclose; Wherein, each sealing obstructive level body 400 distance be located between vertical shaft 200 equals in the plane of the distance between this sealing obstructive level body 400 and vertical shaft 200 pre-set; Be injecting slurries to the slip casting steel pipe 410 be arranged in described plane, slurries, are formed after the soil body of infiltration slurries reaches setting water blockoff intensity through slip casting steel pipe 410 after the soil body penetration of slip casting steel pipe 410 periphery; Wherein, slip casting steel pipe 410 chooses at least two positioning steel tubes 300 as after construction steel pipe, after setting multiple through hole in the underground space surrounded to marine riser curtain in described plane, in each construction steel pipe, set from the underground space surrounded to marine riser curtain in construction steel pipe by each through hole.
And, the length of the fore shaft of positioning steel tube 300 is identical with the length of positioning steel tube 300; The length of the fore shaft of micro steel tube 310 is identical with the length of micro steel tube 310; And fore shaft comprises: fluted body fore shaft 320 and male-type fore shaft 330.
Correspondingly, positioning steel tube 300 is by its fluted body fore shaft/male-type fore shaft, and the male-type fore shaft/fluted body fore shaft of micro steel tube 310 adjacent, placed side by side with it matches, to be connected and fixed micro steel tube 310 adjacent with it; Micro steel tube 310 is by its fluted body fore shaft/male-type fore shaft, and the male-type fore shaft/fluted body fore shaft of micro steel tube adjacent, placed side by side with it matches, to be connected and fixed micro steel tube adjacent with it; And on male-type fore shaft, and scribble in fluted body fore shaft or be marked with encapsulant, in the underground space preventing the groundwater seepage of the periphery of marine riser curtain from surrounding to marine riser curtain.
More preferably, being positioned at side outside marine riser curtain, along the bearing of trend of micro steel tube 310, having set injected hole 340 every setpoint distance (about 0.5 meter) on the wall of micro steel tube 310 of fore shaft of micro steel tube 310; And each injected hole 340 is configured with valve, valve micro steel tube 310 by jacking to the underground construction 100 for building periphery before for closed condition; And for each injected hole 340 of micro steel tube 310, the valve of this injected hole 340, for before slip casting in micro steel tube 310, is opened this valve and is carried out grouting for water blocking to the soil body around the fore shaft of micro steel tube 310.
Further, above-mentioned waterproof structure, also comprises: multiple hoop supports 600;
Each hoop supports in plane 600 between adjacent sealing obstructive level body 400, parallel with sealing obstructive level body 400, is along the lateral wall of marine riser curtain inside wall, micro steel tube 310, perpendicular on the cloth set direction of positioning steel tube 300:
By being located at the construction hole jacking hoop supporting steel pipe of the construction hole on each positioning steel tube 300 to adjacent positioning steel tube, and formed after adjacent hoop supporting steel pipe being welded in each positioning steel tube 300;
Or, adopt Mining Method, excavate the soil body by the construction hole be located on each positioning steel tube to the construction hole of adjacent positioning steel tube, and set up reinforcing bar grid in the space formed after the excavation soil body, form preliminary bracing; Excavating the soil body and along described marine riser curtain inside wall after through one week, in the space that the excavation soil body is formed, laying hoop support shaped steel; In each positioning steel tube, adjacent hoop supported shaped steel and carry out connecting rear formation;
Wherein, hole of constructing sets by the underground space surrounded to marine riser curtain in each positioning steel tube 300; And the construction hole that each positioning steel tube 300 sets is two, and two construction holes are divided into the line of two fore shafts perpendicular to this positioning steel tube 300, cross the both sides of the plane of described line central point.
Further, above-mentioned waterproof structure, also comprises: vertical supporting 620;
Correspondingly, positioning steel tube 300 can be divided into above and below the periphery of the described underground construction for building in couples, and paired two positioning steel tubes are laid in the perpendicular perpendicular to ground; And, for paired two positioning steel tubes, on each positioning steel tube, hoop support place plane, set construction hole perpendicular in the perpendicular on ground, and this construction hole is by leading in this positioning steel tube in the underground space that marine riser curtain surrounds.
Vertical supporting 620, is arranged at hoop and supports between two positioning steel tubes in the plane at 600 places, paired; Be from the construction hole on a positioning steel tube paired two positioning steel tubes to the construction hole jacking vertical supporting steel pipe on another positioning steel tube, formed after the two ends of vertical supporting steel pipe being individually fixed on described two positioning steel tubes in pairs.
Wherein, the diameter of positioning steel tube is greater than the diameter of micro steel tube; Or the diameter of positioning steel tube is more than or equal to 2 meters, the diameter of micro steel tube is less than 2 meters.
In sum, in technical solution of the present invention, when building waterproof structure, define around the underground construction marine riser curtain of a week for building, in the underground space preventing the groundwater seepage of the periphery of marine riser curtain from surrounding to marine riser curtain, and by building sealing obstructive level body in marine riser curtain, prevent in marine riser curtain is outer, the underground water of marine riser curtain bearing of trend enters marine riser curtain and sealing obstructive level body encloses space; Thus, enhance the water proof effect of waterproof structure, make the constructing without in hydrospace of can enclosing at marine riser curtain and sealing obstructive level body of building of underground construction, avoid and carry out stratum precipitation, saved construction cost, reduced difficulty of construction.And, can between adjacent sealing obstructive level body, the hoop formed along the lateral wall of the inside wall of marine riser curtain, micro steel tube supports, and in the plane that hoop supports place, vertical supporting is set between paired positioning steel tube, enhance the effect that marine riser curtain bears the Water And Earth Pressures of its periphery.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (15)
1. build a method for waterproof structure, it is characterized in that, comprising:
For the underground construction for building for after its excavating shaft, build described waterproof structure in the periphery of the described underground construction for building:
Perpendicular to the bearing of trend of described vertical shaft, at the periphery of the described underground construction for building laying at least two positioning steel tubes;
Between the periphery of the described underground construction for building, adjacent two positioning steel tubes, perpendicular to the bearing of trend jacking micro steel tube of described vertical shaft; And between adjacent positioning steel tube and micro steel tube, and be connected by fore shaft between adjacent two micro steel tube, form the marine riser curtain around described peripheral a week;
Slip casting in each micro steel tube, prevents the flexural deformation of described marine riser curtain;
Build in the underground space that described marine riser curtain surrounds multiple and described positioning steel tube vertical, with described vertical shaft at a distance of sealing obstructive level body not etc.;
Between adjacent sealing obstructive level body, in parallel with described sealing obstructive level body plane, in the underground space surrounded to described marine riser curtain in each positioning steel tube, set two construction holes; Wherein, two construction holes are divided into the line of two fore shafts perpendicular to this positioning steel tube, cross the both sides of the plane of described line central point;
Along the lateral wall of described marine riser curtain inside wall, micro steel tube, perpendicular on the cloth set direction of positioning steel tube, construct as follows:
By each construction hole, hoop supporting steel pipe is set to the construction hole of adjacent positioning steel tube, in each positioning steel tube, after being welded by adjacent hoop supporting steel pipe, the hoop supporting steel pipe be weldingly connected is formed between adjacent sealing obstructive level body, the hoop parallel with described sealing obstructive level body supports; Or, adopt Mining Method, excavate the soil body by each construction hole to the construction hole of adjacent positioning steel tube, and set up reinforcing bar grid in the space formed after the excavation soil body, form preliminary bracing; Excavating the soil body and along described marine riser curtain inside wall after through one week, in the space that the excavation soil body is formed, laying hoop support shaped steel; In each positioning steel tube, adjacent hoop is supported after shaped steel connects, be formed between adjacent sealing obstructive level body, the hoop parallel with described sealing obstructive level body support;
Build out the described waterproof structure be made up of the sealing obstructive level body in described marine riser curtain and the underground space that surrounds thereof;
The building process of one of them sealing obstructive level body is:
Choose at least two positioning steel tubes as construction steel pipe; Vertical with described construction steel pipe and and distance between described vertical shaft equal in the plane of the distance between this sealing obstructive level body and described vertical shaft pre-set, set multiple through hole in the underground space surrounded to described marine riser curtain in each construction steel pipe; After setting slip casting steel pipe by each through hole from the underground space surrounded to described marine riser curtain in described construction steel pipe, inject slurries to described slip casting steel pipe, described slurries are through the soil body penetration of described slip casting steel pipe to described slip casting steel pipe periphery; The soil body of infiltration slurries forms this sealing obstructive level body after reaching and setting water blockoff intensity.
2. the method for claim 1, is characterized in that, the length of the fore shaft of described positioning steel tube, identical with the length of described positioning steel tube; The length of the fore shaft of described micro steel tube is identical with the length of described micro steel tube; And described fore shaft comprises: fluted body fore shaft and male-type fore shaft;
Described between adjacent positioning steel tube and micro steel tube, and the mode be connected by fore shaft between adjacent two micro steel tube, be specially:
Described positioning steel tube is by its fluted body fore shaft/male-type fore shaft, and the male-type fore shaft/fluted body fore shaft of micro steel tube adjacent, placed side by side with it matches, to be connected and fixed micro steel tube adjacent with it; And
Described micro steel tube is by its fluted body fore shaft/male-type fore shaft, and the male-type fore shaft/fluted body fore shaft of micro steel tube adjacent, placed side by side with it matches, to be connected and fixed micro steel tube adjacent with it; And
The described bearing of trend perpendicular to described vertical shaft, to lay before at least two positioning steel tubes in the periphery of the described underground construction for building, also comprising:
On described male-type fore shaft, and smear or injecting sealing material in described fluted body fore shaft, prevent between adjacent positioning steel tube and micro steel tube, and be connected by fore shaft between adjacent two micro steel tube, and it is behind the scenes to form described marine riser, in the underground space that the groundwater seepage of the periphery of described marine riser curtain surrounds to described marine riser curtain.
3. the method for claim 1, is characterized in that, described micro steel tube fore shaft be positioned at side outside described marine riser curtain, along described micro steel tube bearing of trend, on the wall of described micro steel tube, set injected hole every setpoint distance; And each injected hole is configured with valve, described valve described micro steel tube by jacking to the described underground construction for building periphery before for closed condition; And
Described before slip casting in each micro steel tube, also comprise:
For each injected hole of described micro steel tube, after opening the valve of this injected hole, by this valve, grouting for water blocking is carried out to the soil body around the fore shaft of described micro steel tube.
4. method as claimed in claim 3, is characterized in that, the described bearing of trend perpendicular to described vertical shaft, lays at least two positioning steel tubes in the periphery of the described underground construction for building, and is specially:
Above and below the periphery described positioning steel tube being divided in couples the described underground construction for building, and two paired positioning steel tubes are laid in the perpendicular perpendicular to ground.
5. method as claimed in claim 4, is characterized in that, described in after the hoop supporting steel pipe that is weldingly connected is formed between adjacent sealing obstructive level body, the hoop parallel with described sealing obstructive level body support, also comprise:
In the plane that described hoop supports place, between paired two positioning steel tubes, vertical supporting is set:
For paired two positioning steel tubes, in the underground space surrounded to described marine riser curtain in each positioning steel tube, set construction hole, and construction hole is positioned at described hoop supports the plane at place, the perpendicular perpendicular to described ground; From the construction hole one of them positioning steel tube to the construction hole jacking vertical supporting steel pipe on another positioning steel tube; The two ends of described vertical supporting steel pipe are individually fixed in after on described two positioning steel tubes in pairs, form described vertical supporting.
6. method as claimed in claim 5, is characterized in that, described in the plane that described hoop supports place, between paired two positioning steel tubes, vertical supporting is set after, also comprise:
Slip casting in each positioning steel tube.
7. the method as described in as arbitrary in claim 3-6, it is characterized in that, the diameter of described positioning steel tube is greater than the diameter of described micro steel tube; Or the diameter of described positioning steel tube is more than or equal to 2 meters, the diameter of described micro steel tube is less than 2 meters.
8. adopt a method for water proof mode constructing underground building, it is characterized in that, comprising:
The claim 1-7 of method as described in as arbitrary in to(for) the underground construction employing for building, for it builds waterproof structure;
The described underground construction for building is built in the underground space that the marine riser curtain of described waterproof structure surrounds.
9. method as claimed in claim 8, is characterized in that, describedly in the underground space that the marine riser curtain of described waterproof structure surrounds, builds described underground construction be specially:
In the underground space that described marine riser curtain surrounds, building of the described underground construction for building is carried out from described vertical shaft;
At the sealing obstructive level body position place building described waterproof structure, this sealing obstructive level body is abolished building of the described underground construction for building of rear continuation.
10. a waterproof structure, is characterized in that, comprising: support around the marine riser curtain of the underground construction periphery for building, multiple sealing obstructive level body and multiple hoop;
Described marine riser curtain comprises: at least two positioning steel tubes, micro steel tube; Described positioning steel tube, being from perpendicular to the bearing of trend for the described vertical shaft built for the underground construction of building, being laid in the peripheral soil body of the described underground construction for building; Described micro steel tube, between adjacent two positioning steel tubes, be from described in the bearing of trend jacking perpendicular to described vertical shaft for the peripheral soil body of underground construction built; Between adjacent positioning steel tube and micro steel tube, and be connected by fore shaft between adjacent two micro steel tube; And be marked with slurries in each micro steel tube;
Described multiple sealing obstructive level body, is parallelly divided in the underground space that described marine riser curtain surrounds, vertical with described positioning steel tube, and with described vertical shaft at a distance of not etc.; Wherein,
Each sealing obstructive level body distance be located between described vertical shaft equals in the plane of the distance between this sealing obstructive level body and described vertical shaft pre-set, injecting slurries to the slip casting steel pipe that is arranged in described plane, described slurries are through described slip casting steel pipe after the soil body penetration of described slip casting steel pipe periphery, and the soil body of infiltration slurries is formed after reaching and setting water blockoff intensity; Wherein, described slip casting steel pipe chooses at least two positioning steel tubes as after construction steel pipe, after setting multiple through hole in the underground space surrounded to described marine riser curtain in described plane, in each construction steel pipe, set from the underground space surrounded to described marine riser curtain in described construction steel pipe by each through hole;
Each hoop during described multiple hoop supports supports in plane between adjacent sealing obstructive level body, parallel with described sealing obstructive level body, is along the lateral wall of described marine riser curtain inside wall, micro steel tube, perpendicular on the cloth set direction of positioning steel tube:
By the construction hole be located on each positioning steel tube, hoop supporting steel pipe is set to the construction hole of adjacent positioning steel tube, and formed after adjacent hoop supporting steel pipe being welded in each positioning steel tube; Or,
Adopt Mining Method, excavate the soil body by the construction hole be located on each positioning steel tube to the construction hole of adjacent positioning steel tube, and set up reinforcing bar grid in the space formed after the excavation soil body, form preliminary bracing; Excavating the soil body and along described marine riser curtain inside wall after through one week, in the space that the excavation soil body is formed, laying hoop support shaped steel; In each positioning steel tube, adjacent hoop supported shaped steel and carry out connecting rear formation;
Wherein, described construction hole sets by the underground space surrounded to described marine riser curtain in each positioning steel tube; And the construction hole that each positioning steel tube sets is two, and two construction holes are divided into the line of two fore shafts perpendicular to this positioning steel tube, cross the both sides of the plane of described line central point.
11. waterproof structures as claimed in claim 10, is characterized in that, the length of the fore shaft of described positioning steel tube, identical with the length of described positioning steel tube; The length of the fore shaft of described micro steel tube is identical with the length of described micro steel tube; And described fore shaft comprises: fluted body fore shaft and male-type fore shaft; And
Described positioning steel tube is by its fluted body fore shaft/male-type fore shaft, and the male-type fore shaft/fluted body fore shaft of micro steel tube adjacent, placed side by side with it matches, to be connected and fixed micro steel tube adjacent with it; And
Described micro steel tube is by its fluted body fore shaft/male-type fore shaft, and the male-type fore shaft/fluted body fore shaft of micro steel tube adjacent, placed side by side with it matches, to be connected and fixed micro steel tube adjacent with it; And
On described male-type fore shaft, and scribble in described fluted body fore shaft or be marked with encapsulant, in the underground space preventing the groundwater seepage of the periphery of described marine riser curtain from surrounding to described marine riser curtain.
12. waterproof structures as claimed in claim 10, is characterized in that, described micro steel tube fore shaft be positioned at side outside described marine riser curtain, along described micro steel tube bearing of trend, on the wall of described micro steel tube, set injected hole every setpoint distance; And each injected hole is configured with valve, described valve described micro steel tube by jacking to the described underground construction for building periphery before for closed condition; And
For each injected hole of described micro steel tube, the valve of this injected hole, for before slip casting in described micro steel tube, is opened this valve and is carried out grouting for water blocking to the soil body around the fore shaft of described micro steel tube.
13. waterproof structures as claimed in claim 12, it is characterized in that, described positioning steel tube is divided into above and below the periphery of the described underground construction for building in couples, and paired two positioning steel tubes are laid in the perpendicular perpendicular to ground; And
For paired two positioning steel tubes, on each positioning steel tube, support in the plane at place, perpendicular perpendicular to described ground at described hoop and set construction hole, and this construction hole is by leading in this positioning steel tube in the underground space that described marine riser curtain surrounds.
14. waterproof structures as claimed in claim 13, is characterized in that, also comprise: vertical supporting;
Described vertical supporting, is arranged at described hoop and supports between two positioning steel tubes in the plane at place, paired; Be from the construction hole on a positioning steel tube paired two positioning steel tubes to the construction hole jacking vertical supporting steel pipe on another positioning steel tube, formed after the two ends of described vertical supporting steel pipe being individually fixed on described two positioning steel tubes in pairs.
15. as arbitrary in claim 12-14 as described in waterproof structure, it is characterized in that, the diameter of described positioning steel tube is greater than the diameter of described micro steel tube; Or the diameter of described positioning steel tube is more than or equal to 2 meters, the diameter of described micro steel tube is less than 2 meters.
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| CN103742157A (en) * | 2014-01-23 | 2014-04-23 | 岩土科技股份有限公司 | Method of newly building underground space under ground by pipe jacking method |
| CN104806274B (en) * | 2015-04-20 | 2017-02-01 | 中建南方投资有限公司 | Large-span long-distance underground space main body supporting integrated structure and construction method |
| CN105240024B (en) * | 2015-09-23 | 2017-08-25 | 中国地质大学（武汉） | A kind of method of parallel shield method enlarging construction subway station |
| KR101665515B1 (en) * | 2016-01-26 | 2016-10-24 | 우경기술주식회사 | Direct-boring pipe roof tunnel construction method and structure non-cutting natural ground |
| CN107178370A (en) * | 2017-07-11 | 2017-09-19 | 上海市城市建设设计研究总院（集团）有限公司 | It is not take up the method for construction of constructing road subway station weak soil |
| CN111911168B (en) * | 2020-09-04 | 2022-09-06 | 石家庄铁道大学 | Construction method of shallow-buried underground excavation large-span tunnel and permanent support system |
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| JPH09217584A (en) * | 1995-12-05 | 1997-08-19 | Komatsu Ltd | Pipe joint for pipe roof, watertight packing of shaft, and water cutoff method in pipe roof construction method |
| JP3241344B2 (en) * | 1999-05-27 | 2001-12-25 | 株式会社ケー・エフ・シー | Tunnel waterproof structure and its construction method |
| CN1139718C (en) * | 2002-05-14 | 2004-02-25 | 何益寿 | Channels and collaterals type water-proof drainage structure for underground engineering and its construction method |
| JP3860143B2 (en) * | 2003-06-26 | 2006-12-20 | 株式会社データ・トゥ | Excavator for pipe roof and pipe roof construction method using them |
| CN100538010C (en) * | 2004-02-06 | 2009-09-09 | 株式会社Ntsenc | Form the method for laying structures and the structure of subterranean tunnel |
| CN1800514A (en) * | 2005-12-13 | 2006-07-12 | 上海市第二市政工程有限公司 | Big section pipe roof- box culvert jacking construction method |
| CN101285385B (en) * | 2008-05-29 | 2010-06-02 | 中交第二公路勘察设计研究院有限公司 | Undermining method for three-dimensional pipe-curtain |
| JP5631821B2 (en) * | 2011-08-22 | 2014-11-26 | 大成建設株式会社 | Water stop structure and its construction method |
| CN203584437U (en) * | 2013-08-15 | 2014-05-07 | 北京市轨道交通设计研究院有限公司 | First lining structure used for constructing underground engineering and having water-resisting function |
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