CN103437789A - Method for constructing water proof structure and constructing underground construction in water proof mode - Google Patents
Method for constructing water proof structure and constructing underground construction in water proof mode Download PDFInfo
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- CN103437789A CN103437789A CN2013103562788A CN201310356278A CN103437789A CN 103437789 A CN103437789 A CN 103437789A CN 2013103562788 A CN2013103562788 A CN 2013103562788A CN 201310356278 A CN201310356278 A CN 201310356278A CN 103437789 A CN103437789 A CN 103437789A
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Abstract
The invention discloses a method for constructing a water proof structure and constructing underground construction in a water proof mode. The method for constructing the water proof structure includes the steps that positioning steel tubes are laid on the outer periphery of prebuilt underground construction in the direction perpendicular to the extending direction of a vertical shaft after the vertical shaft is excavated for the prebuilt underground construction; micro steel tubes are jacked into the space between adjacent positioning steel tubes on the outer periphery of the prebuilt underground construction in the direction perpendicular to the extending direction of the vertical shaft; the adjacent positioning steel tubes and the micro steel tubes are connected through fore shafts and adjacent micro steel tubes are connected though fore shafts to form a water proof tube curtain encircling the outer periphery of the prebuilt underground construction; grout is injected into the micro steel tubes; water stop blocking plane bodies perpendicular to the positioning steel tubes and away from the vertical shaft at different distances are constructed in the underground space defined by the water proof tube curtain; annular supporting bodies parallel to the water stop blocking plane bodies are formed between adjacent water stop blocking plane bodies along the inner side wall of the water proof tube curtain. The water proof structure constructed through the method has the good water proof effect, and enables the water proof tube curtain to have strong rigidity.
Description
Technical field
The present invention relates to the underground construction technical field, relate in particular to a kind of method of building waterproof structure, adopting water proof mode constructing underground building.
Background technology
At present, the underground constructions such as underground underpass, underground traffic tunnel, underground utilities tunnel and subway station build more and more.Carrying out these underground constructions while building, the method usually adopted has cut and cover method and hidden construction process.Cut and cover tunneling is simple, quick, but larger on destruction or the impact of surrounding environment, and only is suitable for the construction under the more shallow condition of buried depth.Hidden construction process, when construction, does not all excavate the underground construction ground partly of building in advance, less to surrounding environment influence, is particularly useful for building of city underground construction.
Yet the buried depth of some underground constructions can reach 20～40 meters at present, even enter underground artesian water zone.Such as, in the construction plan of Beijing Metro, some cities cryptographically transfer station of iron wire will there will be the even four line transfers of three lines, and the construction possibility of subway station or circuit will be buried to below 35 meters.Because Urban Underground water conservation requirement is 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 hole stake method, partial excavation method etc., it is prerequisite that the stratum precipitation of all take is created the construction operation condition, at larger buried depth, when being rich in underground water and not allowing to carry out under the condition of stratum precipitation constructing underground building, no longer applicable.
At present, at larger buried depth, when being rich in underground water and not allowing to carry out under the condition of stratum precipitation constructing underground building, engineering staff's general using push pipe (or ramming pipe) technology is at the first half or the peripheral jacking steel pipe (or pipe of other materials) of the underground construction of building in advance, between steel pipe, adopt (part does not adopt) fore shaft to be connected to form the pipe curtain, 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 job practices is called to pipe curtain method.Usually, this pipe curtain method all be take construction and is carried out stratum precipitation as prerequisite before prerequisite, to meet the requirement of construction operation; And, the micro-pipe-jacking technology of the general employing of pipe curtain method, the diameter of the steel pipe of jacking is generally less than 1 meter, and when constructing underground building, the pipe curtain is only by carry out grouting and reinforcing in steel pipe, a little less than it bears the effect of peripheral Water And Earth Pressures.
A kind of follow-on pipe curtain method is by the peripheral jacking larger diameter steel pipe (being generally 2 meters) of the underground construction building in advance, in the larger diameter steel duct, cut, the constructing operation such as welding, on the hoop of pipe curtain, each steel pipe is connected, reinforces by reinforcing bar, the formation hoop supports, and has strengthened the effect that the pipe curtain bears its peripheral Water And Earth Pressures.But, when this follow-on pipe curtain method is constructed in the larger diameter steel pipe, often to each steel pipe all cut, the constructing operation such as welding, make difficulty of construction larger, progress is slower; And this follow-on pipe curtain 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 curtain method of the prior art or follow-on pipe curtain 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 the method that adopts water proof mode constructing underground building, thereby make built waterproof structure there is better water proof effect, and do not carrying out under the condition of stratum precipitation, can in without hydrospace, carry out building of underground construction.
Summary of the invention
The defect existed for above-mentioned prior art, the invention provides a kind of method of building waterproof structure, adopting water proof mode constructing underground building, and 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 after its excavating shaft, in the periphery of described underground construction of building in advance, build described waterproof structure for the underground construction of building in advance:
Perpendicular to the bearing of trend of described vertical shaft, at least two positioning steel tubes of the periphery of described underground construction of building in advance laying;
Between the periphery of described underground construction of building in advance, adjacent two positioning steel tubes, perpendicular to the micro-steel pipe of bearing of trend jacking of described vertical shaft; And between adjacent positioning steel tube and micro-steel pipe, and by fore shaft, be connected between two adjacent micro-steel pipes, form the marine riser curtain around described peripheral a week;
To slip casting in each micro-steel pipe, prevent the flexural deformation of described marine riser curtain;
In the underground space surrounded at described marine riser curtain, build a plurality of with described positioning steel tube is vertical, with described vertical shaft apart after the sealing obstructive level body do not waited, build out the described waterproof structure formed by 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 described vertical shaft between distance this sealing obstructive level body of equaling to set in advance and the plane of the distance between described vertical shaft in, set a plurality of through holes in the underground space surrounded to described marine riser curtain in each construction steel pipe; The underground space surrounded to described marine riser curtain in described construction steel pipe by each through hole sets the slip casting steel pipe, to described slip casting steel pipe, inject slurries, described slurries are the soil body penetration to described slip casting steel pipe periphery through described slip casting steel pipe; 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 pipe is identical with the length of described micro-steel pipe; And described fore shaft comprises: fluted body fore shaft and male-type fore shaft;
Described between adjacent positioning steel tube and micro-steel pipe, and the mode be connected by fore shaft between two adjacent micro-steel pipes, be specially:
Described positioning steel tube is by its fluted body fore shaft/male-type fore shaft, and the male-type fore shaft of micro-steel pipe adjacent, placed side by side/fluted body fore shaft matches with it, to be connected and fixed adjacent with it micro-steel pipe; And
Described micro-steel pipe is by its fluted body fore shaft/male-type fore shaft, and the male-type fore shaft of micro-steel pipe adjacent, placed side by side/fluted body fore shaft matches with it, to be connected and fixed adjacent with it micro-steel pipe; And
The described bearing of trend perpendicular to described vertical shaft, before at least two positioning steel tubes are laid in the periphery of described underground construction of building in advance, also comprise:
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 pipe, and by fore shaft, be connected between two adjacent micro-steel pipes, and form described marine riser backstage, in the underground space that the groundwater seepage of the periphery of described marine riser curtain surrounds to described marine riser curtain.
Preferably, the fore shaft of described micro-steel pipe be positioned at a side outside described marine riser curtain, along on the bearing of trend of described micro-steel pipe, wall at described micro-steel pipe, every setpoint distance, having set injected hole; And each injected hole disposes valve, described valve was closed condition by jacking at described micro-steel pipe before the periphery of described underground construction of building in advance; And
Described before slip casting in each micro-steel pipe, also comprise:
For each injected hole of described micro-steel pipe, after opening the valve of this injected hole, by this valve, the soil body around the fore shaft of described micro-steel pipe is carried out to grouting for water blocking.
Further, in the described underground space surrounded at described marine riser curtain, build a plurality of with described positioning steel tube is vertical, with described vertical shaft, apart after the sealing obstructive level body do not waited, also comprise:
Between adjacent sealing obstructive level body, in the plane parallel with described sealing obstructive level body, set two construction holes in the underground space surrounded to described marine riser curtain in each positioning steel tube; Wherein, two construction holes are divided into line perpendicular to two fore shafts of this positioning steel tube, cross the both sides on the plane of described line central point;
Along the lateral wall of described marine riser curtain inside wall, micro-steel pipe, on the cloth set direction perpendicular to positioning steel tube, construct as follows:
To the construction hole of adjacent positioning steel tube, the hoop supporting steel pipe is set by each construction hole; In each positioning steel tube, after adjacent hoop supporting steel pipe is welded, 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;
Perhaps, adopt Mining Method, the construction hole excavation soil body by each construction hole to adjacent positioning steel tube, and set up reinforcing bar grid in the space formed after the excavation soil body, form preliminary bracing; At the excavation soil body and after connecting one week along described marine riser curtain inside wall, lay hoop and support shaped steel in the excavation formed space of the soil body; In each positioning steel tube, after adjacent hoop is supported to shaped steel and connected, be formed between adjacent sealing obstructive level body, the hoop support parallel with described sealing obstructive level body.
Preferably, the described bearing of trend perpendicular to described vertical shaft, lay at least two positioning steel tubes in the periphery of described underground construction of building in advance, be specially:
Described positioning steel tube is divided in couples to the above and below of the periphery of described underground construction of building in advance, and two paired positioning steel tubes are laid in the perpendicular perpendicular to ground.
Further, after the described hoop supporting steel pipe be weldingly connected is formed between adjacent sealing obstructive level body, the hoop parallel with described sealing obstructive level body support, also comprise:
Vertical supporting is set in described hoop supports the plane at place, between paired two positioning steel tubes:
For two paired positioning steel tubes, set the construction hole in the underground space surrounded to described marine riser curtain in each positioning steel tube, and the construction hole is positioned at plane that described hoop supports place, perpendicular to the perpendicular on described ground; Construction hole from one of them positioning steel tube is to the construction hole jacking vertical supporting steel pipe on another positioning steel tube; After being individually fixed on described two paired positioning steel tubes by the two ends of described vertical supporting steel pipe, form described vertical supporting.
Further, described in described hoop supports the plane at place, between paired two positioning steel tubes, vertical supporting is set after, also comprise:
To slip casting in each positioning steel tube.
Preferably, the diameter of described positioning steel tube is greater than the diameter of described micro-steel pipe; Perhaps, the diameter of described positioning steel tube is more than or equal to 2 meters, and the diameter of described micro-steel pipe is less than 2 meters.
The present invention also provides a kind of method that adopts water proof mode constructing underground building, it is characterized in that, comprising:
Adopt the above-mentioned method of building waterproof structure for the underground construction of building in advance, for it builds waterproof structure;
Build described underground construction of building in advance in the underground space that the marine riser curtain of described waterproof structure surrounds.
Preferably, building described underground construction in the underground space that the described curtain of the marine riser at described waterproof structure surrounds is specially:
Carry out building of described underground construction of building in advance in the underground space surrounded to described marine riser curtain from described vertical shaft;
Place, a sealing obstructive level body position building described waterproof structure, abolish building of the described underground construction of building in advance of rear continuation by this sealing obstructive level body.
The present invention also provides a kind of waterproof structure, comprising: around marine riser curtain and a plurality of sealing obstructive level body of the underground construction periphery of building in advance;
Described marine riser curtain comprises: at least two positioning steel tubes, micro-steel pipe; Described positioning steel tube, be the bearing of trend from the vertical shaft perpendicular to building for described underground construction of building in advance, is laid in the peripheral soil body of described underground construction of building in advance; Described micro-steel pipe, between two adjacent positioning steel tubes, is from the peripheral soil body of the described underground construction of building in advance of bearing of trend jacking perpendicular to described vertical shaft; Between adjacent positioning steel tube and micro-steel pipe, and by fore shaft, be connected between two adjacent micro-steel pipes; And be marked with slurries in each micro-steel pipe;
Described a plurality of sealing obstructive level body, parallel being 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 waiting; Wherein,
Each sealing obstructive level body be located at and described vertical shaft between distance this sealing obstructive level body of equaling to set in advance and the plane of the distance between described vertical shaft in, to inject slurries at the slip casting steel pipe to being 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 reaches to set after water blockoff intensity and forms; Wherein, described slip casting steel pipe be choose at least two positioning steel tubes as construction steel pipe after, set a plurality of through holes in the underground space surrounded to described marine riser curtain in described plane, in each construction steel pipe after, by each through hole, from the underground space surrounded to described marine riser curtain in described construction steel pipe, set.
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 pipe is identical with the length of described micro-steel pipe; 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 of micro-steel pipe adjacent, placed side by side/fluted body fore shaft matches with it, to be connected and fixed adjacent with it micro-steel pipe; And
Described micro-steel pipe is by its fluted body fore shaft/male-type fore shaft, and the male-type fore shaft of micro-steel pipe adjacent, placed side by side/fluted body fore shaft matches with it, to be connected and fixed adjacent with it micro-steel pipe; And
On described male-type fore shaft, and scribble or be marked with encapsulant in described fluted body fore shaft, prevent in the underground space that the groundwater seepage of the periphery of described marine riser curtain surrounds to described marine riser curtain.
Preferably, the fore shaft of described micro-steel pipe be positioned at a side outside described marine riser curtain, along on the bearing of trend of described micro-steel pipe, wall at described micro-steel pipe, every setpoint distance, having set injected hole; And each injected hole disposes valve, described valve was closed condition by jacking at described micro-steel pipe before the periphery of described underground construction of building in advance; And
For each injected hole of described micro-steel pipe, the valve of this injected hole, for before slip casting in described micro-steel pipe, is opened this valve the soil body around the fore shaft of described micro-steel pipe is carried out to grouting for water blocking.
Further, described waterproof structure also comprises: a plurality of hoops support;
Each hoop supports between adjacent sealing obstructive level body, in the plane parallel with described sealing obstructive level body, be along the lateral wall of described marine riser curtain inside wall, micro-steel pipe, on the cloth set direction perpendicular to positioning steel tube:
By being located at the construction hole to adjacent positioning steel tube, construction hole on each positioning steel tube, the hoop supporting steel pipe is set, and form after in each positioning steel tube, adjacent hoop supporting steel pipe being welded; Perhaps,
Adopt Mining Method, excavate the soil body by the construction hole of being 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; At the excavation soil body and after connecting one week along described marine riser curtain inside wall, lay hoop and support shaped steel in the excavation formed space of the soil body; In each positioning steel tube, adjacent hoop is supported to shaped steel and connected rear formation;
Wherein, described construction hole is by setting in the underground space surrounded to described marine riser curtain in each positioning steel tube; And the construction hole set on each positioning steel tube is two, and two construction holes are divided into line perpendicular to two fore shafts of this positioning steel tube, cross the both sides on the plane of described line central point.
Preferably, described positioning steel tube is divided into the above and below of the periphery of described underground construction of building in advance in couples, and two paired positioning steel tubes are laid in the perpendicular perpendicular to ground; And
For two paired positioning steel tubes, on each positioning steel tube, set the construction hole in described hoop supports the plane at place, perpendicular perpendicular to described ground, 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, be arranged in the plane that described hoop supports place, between paired two positioning steel tubes; Be construction hole on a positioning steel tube from two paired positioning steel tubes to the construction hole jacking vertical supporting steel pipe on another positioning steel tube, form after being individually fixed on described paired two positioning steel tubes by the two ends of described vertical supporting steel pipe.
Preferably, the diameter of described positioning steel tube is greater than the diameter of described micro-steel pipe; Perhaps, the diameter of described positioning steel tube is more than or equal to 2 meters, and the diameter of described micro-steel pipe is less than 2 meters.
In technical solution of the present invention, when building waterproof structure, formed around the underground construction of building the in advance marine riser curtain of a week, prevent in the underground space that the groundwater seepage of the periphery of marine riser curtain surrounds to the marine riser curtain, and, by build sealing obstructive level body in the marine riser curtain, prevented that marine riser curtain underground water outer, marine riser curtain bearing of trend from entering in the space that marine riser curtain and sealing obstructive level body enclose; Thereby, strengthened the water proof effect of waterproof structure, make building of underground construction to enclose at marine riser curtain and sealing obstructive level body without hydrospace in constructed, avoided carrying out stratum precipitation, saved construction cost, reduced difficulty of construction.And, can be between adjacent sealing obstructive level body, formation is supported along the hoop of the lateral wall of the inside wall of marine riser curtain, micro-steel pipe, and in hoop supports the plane at place, between paired positioning steel tube, vertical supporting is set, strengthened the effect that the marine riser curtain bears its peripheral Water And Earth Pressures.
The accompanying drawing explanation
The flow chart of the method for building waterproof structure that Fig. 1 is the embodiment of the present invention;
The schematic diagram of the position relationship of the vertical shaft that Fig. 2 is the embodiment of the present invention, positioning steel tube and the underground construction of building in advance;
The schematic diagram of the marine riser curtain formed in vertical shaft that Fig. 3 is the embodiment of the present invention;
The fluted body fore shaft that Fig. 4 is the embodiment of the present invention and the shape of male-type fore shaft, the schematic diagram be connected;
The schematic diagram that the sealing obstructive level body that Fig. 5 is the embodiment of the present invention and hoop support;
The schematic diagram of the slip casting steel pipe set that Fig. 6 is the embodiment of the present invention;
The hoop support that Fig. 7 is the embodiment of the present invention, vertical supporting are at the schematic diagram perpendicular on positioning steel tube cloth set direction.
The specific embodiment
For making purpose of the present invention, technical scheme and advantage clearer, referring to accompanying drawing and enumerate preferred embodiment, the present invention is described in more detail.Yet, it should be noted that, many details of listing in manual are only in order to make the reader, to one or more aspects of the present invention, a thorough understanding be arranged, even if do not have these specific details also can realize these aspects of the present invention.
Main thought of the present invention is, when building waterproof structure, in the vertical shaft of excavation in advance, adopts the mode of non-excavation to lay positioning steel tube and micro-steel pipe, forms the periphery marine riser curtain of a week around the underground construction of building in advance; And preset a plurality of injected holes on the wall of micro-steel pipe, can carry out slip casting to the soil body around fore shaft by injected hole, thereby strengthen the water proof effect of marine riser curtain;
And, can in the positioning steel tube larger at diameter, be constructed, form the sealing obstructive level body of a plurality of set directions of the cloth perpendicular to positioning steel tube in the underground space surrounded at the marine riser curtain, enter in the space that marine riser curtain and sealing obstructive level body enclose with the underground water that prevents marine riser curtain bearing of trend; Thereby strengthen the water proof effect of waterproof structure, avoid carrying out stratum precipitation.
Describe technical scheme of the present invention in detail below in conjunction with accompanying drawing.The embodiment of the present invention provides a kind of method of building waterproof structure, as shown in Figure 1, specifically comprises the steps:
S101: be the Underground Engineering Excavation vertical shaft of building in advance.
Particularly, as shown in Figure 2, the method of building vertical shaft that can be by prior art is at a vertical shaft perpendicular to the ground 200 of the periphery of the underground construction 100 of building in advance excavation, so that the staff arrives job position by vertical shaft, and heads into positioning steel tube and micro-steel pipe provides construction space for follow-up.
S102: perpendicular to vertical shaft 200, at least two positioning steel tubes 300 of the periphery of the underground construction 100 of building in advance laying.
Particularly, as shown in Figure 2, on the bearing of trend perpendicular to vertical shaft 200, in the periphery of the underground construction 100 of building in advance, adopt the mode (as pelta structure, push pipe or rammer pipe) of non-excavation to lay at least two positioning steel tubes 300; Installation position and the quantity of positioning steel tube 300 are set by the engineering staff; Preferably, can lay positioning steel tube 300 in the corner position of the periphery of the underground construction 100 of building in advance, if the underground construction of building in advance 100 is multi span structure, can above the periphery of the underground construction 100 of building in advance, below paired laying positioning steel tube 300.
For example, as shown in Figure 3, in the periphery of the underground construction 100 of building in advance, lay 8 positioning steel tubes 300, and laid respectively at top and the below of the periphery of the underground construction 100 of building in advance.
S103: between the periphery of the underground construction 100 of building in advance, adjacent two positioning steel tubes 300, perpendicular to the bearing of trend of vertical shaft 200, lay micro-steel pipe 310, form the periphery marine riser curtain of a week around the underground construction 100 of building in advance.
Particularly, as shown in Figure 3, between the periphery of the underground construction 100 of building in advance, adjacent two positioning steel tubes 300, lay micro-steel pipe 310 perpendicular to the bearing of trend of vertical shaft 200, and between adjacent positioning steel tube and micro-steel pipe, and by fore shaft, be connected between two adjacent micro-steel pipes, form the periphery marine riser curtain of a week around the underground construction 100 of building in advance, thereby prevent in the underground space that the groundwater seepage of marine riser curtain periphery surrounds to the marine riser curtain.Wherein, the diameter parameters of positioning steel tube and micro-steel pipe can be set according to drilling process, hydrogeology, construction manpower, cost; Fore shaft is to be welded in advance on the wall of each positioning steel tube 300 and each micro-steel pipe 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 pipe 310 is identical with the length of micro-steel pipe 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 pipe, and the mode be connected by fore shaft between two adjacent micro-steel pipes, be specifically as follows: positioning steel tube 300 is by its fluted body fore shaft/male-type fore shaft, the male-type fore shaft of micro-steel pipe 310 adjacent, placed side by side/fluted body fore shaft matches with it, to be connected and fixed adjacent with it micro-steel pipe 310; And micro-steel pipe 310 is by its fluted body fore shaft/male-type fore shaft, and the male-type fore shaft of micro-steel pipe adjacent, placed side by side/fluted body fore shaft matches with it, to be connected and fixed adjacent with it micro-steel pipe.And, between fluted body fore shaft 320 and male-type fore shaft 330, certain gap is arranged, can make the positioning steel tube 300 and micro-steel pipe 310 that are connected, and two micro-steel pipes 310 that are connected in certain angle scope (as 0 degree to 10 degree) along the bearing of trend rotation of fore shaft, when positioning steel tube 300 and micro-steel pipe 310 are connected to form the pipe curtain, there is higher flexibility like this.
More preferably, can also be before positioning steel tube be laid and before micro-steel pipe jacking, on male-type fore shaft 330, and in fluted body fore shaft 320, smear or injecting sealing material (as butter etc.), in the underground space surrounded to the marine riser curtain with the groundwater seepage of the periphery that prevents better the marine riser curtain.
And, above-mentioned fore shaft also has guide effect, when the micro-steel pipe 310 of jacking, can be by the fore shaft on micro-steel pipe 310 of the positioning steel tube 300 formerly laid or formerly jacking, be controlled at the jacking direction of micro-steel pipe 310 of rear jacking, can increase like this accuracy of marine riser curtain micro-steel pipe 310 jackings in forming process.
S104: to the interior slip casting of each micro-steel pipe 310.
Particularly, to the interior slip casting of each micro-steel pipe 310 (as injected water mud), increase its rigidity, and prevent the flexural deformation of marine riser curtain, strengthen the effect that the marine riser curtain bears its peripheral Water And Earth Pressures.
More preferably, the fore shaft of micro-steel pipe 310 be positioned at a side outside the marine riser curtain, along the bearing of trend of micro-steel pipe 310, on the wall of micro-steel pipe 310, every setpoint distance (approximately 0.5 meter), set injected hole 340(as shown in Figure 4); And each injected hole 340 disposes valve, valve was closed condition by jacking at micro-steel pipe 310 before the periphery of the underground construction 100 of building in advance.
Like this, treat micro-steel pipe 310 jackings put in place, to before the interior slip casting of each micro-steel pipe 310, each injected hole for micro-steel pipe 310, after opening the valve of this injected hole, by this valve, the soil body around the fore shaft of micro-steel pipe 310 is carried out to grouting for water blocking, thereby, strengthen the impermeable role of fore shaft, further prevent in the underground space that the groundwater seepage of marine riser curtain periphery surrounds to the marine riser curtain.Wherein, can by the engineering staff before interior slip casting of micro-steel pipe 310 to each, open valve, inject the slurries with plugging function in the fore shaft soil body on every side of micro-steel pipe 310, after the soil body of infiltration slurries reaches water blockoff intensity, to the interior slip casting of micro-steel pipe 310.
S105: build a plurality of sealing obstructive level bodies 400 vertical with positioning steel tube 300 in the underground space surrounded at the marine riser curtain.
Particularly, as shown in Figure 5, in the underground space surrounded at the marine riser curtain, build a plurality of with cloth set direction positioning steel tube 300 is vertical, with the sealing obstructive level body 400 that vertical shaft 200 does not apart wait, the underground water that prevents marine riser curtain bearing of trend enters in the space that marine riser curtain and sealing obstructive level body 400 enclose; That is to say, different sealing obstructive level bodies 400 is different from the distance of vertical shaft 200; In other words, in the underground space surrounded at the marine riser curtain, along the diverse location place of the cloth set direction of positioning steel tube 300, be provided with respectively the sealing obstructive level body 400 vertical with the cloth set direction of positioning steel tube 300.
In fact, for each sealing obstructive level body 400, the engineering staff can set in advance the distance between (design) this sealing obstructive level body 400 and vertical shaft 200, and is constructed according to the distance set in advance, 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 that sets in advance (design) and vertical shaft 200, vertical with construction steel pipe, and vertical shaft 200 between distance this sealing obstructive level body 400 of equaling to set in advance and the plane of the distance between vertical shaft 200 in, set a plurality of through holes in the underground space surrounded to the marine riser curtain in each construction steel pipe; The underground space surrounded to the marine riser curtain in construction steel pipe by each through hole sets slip casting steel pipe 410(as shown in Figure 6), injecting slurries to slip casting steel pipe 410, slurries are the soil body penetration to slip casting steel pipe 410 peripheries through slip casting steel pipe 410; The soil body of infiltration slurries forms this sealing obstructive level body 400 after reaching and setting water blockoff intensity.Wherein, the slurries that inject to the slip casting steel pipe can be selected according to the situation on the stratum at the underground construction place of building in advance, are specifically as follows the slurries with plugging function.
Like this, after building sealing obstructive level body in the underground space surrounded at the marine riser curtain, build out the waterproof structure formed by the sealing obstructive level body in marine riser curtain and the underground space that surrounds thereof.
For example, the schematic diagram that Fig. 6 is the slip casting steel pipe that in Fig. 5, the I-I section part sets; As shown in Figure 6, slip casting steel pipe 410 vertical with construction steel pipe, and vertical shaft 200 between distance distance this sealing obstructive level body 400 of equaling to set in advance and the plane of the distance between vertical shaft 200 in; And the engineering staff, when setting each slip casting steel pipe, is uniformly distributed in the underground space that can make each slip casting steel pipe surround at the marine riser curtain as far as possible, like this, after by the slip casting of slip casting steel pipe, the soil body of infiltration slurries can form sealing obstructive level body 400 better.
S106: the hoop formed between adjacent sealing obstructive level body 400 supports 600.
Particularly, as shown in Figure 5, the effect of for strengthening the marine riser curtain, bearing its peripheral Water And Earth Pressures, can between adjacent sealing obstructive level body 400, form hoop and support 600, be specially: between adjacent sealing obstructive level body 400, in the plane parallel with sealing obstructive level body 400, set two construction holes in the interior underground space surrounded to the marine riser curtain of each positioning steel tube 300, two construction holes are the through hole be positioned on positioning steel tube 300, and be divided into the line perpendicular to two fore shafts of this positioning steel tube 300, cross the both sides on the plane of described line central point,
Along the lateral wall of marine riser curtain inside wall, micro-steel pipe 310, perpendicular to positioning steel tube 300 cloth set directions, adopt non-digging mode (as pipe jacking method) or Mining Method to construct as follows:
If employing construction by pipeline jacking method, by each construction hole, to the construction hole jacking of adjacent positioning steel tube (or setting), the hoop supporting steel pipe (as shown in Figure 7, and the schematic diagram that Fig. 7 is II-II section in Fig. 5), in each positioning steel tube, adjacent hoop supporting steel pipe is welded (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 supports 600;
If the employing mining method construction, along the inside wall of marine riser curtain by each construction hole the construction hole excavation soil body to adjacent positioning steel tube, and adopt the reinforcing bar grid of a determining deviation (as 0.5 meter) to split the space that excavator body forms to carry out preliminary bracing; After excavating the soil body and connecting one week, lay hoop and support shaped steel in the space formed; In each positioning steel tube, hoop is supported to shaped steel and welded, the hoop that is weldingly connected supports shaped steel, between adjacent sealing obstructive level body 400, the hoop support 600 parallel with sealing obstructive level body 400.
Like this, can only in positioning steel tube inside, be cut, the constructing operation such as welding, form hoop along the lateral wall of marine riser curtain inside wall, micro-steel pipe and support 600, avoided the constructing operation such as cutting to micro-steel pipe, welding, reduce difficulty of construction, thereby improved construction speed; And, after forming hoop support 600, can also, to slip casting in the hoop supporting steel pipe, after slurries (as cement paste) reach intensity, further strengthen the effect that the marine riser curtain bears its peripheral Water And Earth Pressures.
Preferably, because the 400 pairs of marine riser curtains of sealing obstructive level body that build also have certain supporting role, can form hoop in the centre position of two adjacent sealing obstructive level bodies 400 thus and support 600, like this, can, so that the support force that the marine riser curtain is subject on perpendicular to positioning steel tube 300 directions is more even, further strengthen the effect that the marine riser curtain bears its peripheral Water And Earth Pressures.
Usually, the diameter of positioning steel tube is greater than the diameter of micro-steel pipe; Perhaps, the diameter of positioning steel tube is more than or equal to 2 meters (as 3 meters), and the diameter of micro-steel pipe is less than 2 meters (as 1 meters); Like this, can facilitate the engineering staff to wait and be constructed in positioning steel tube inside, and, be convenient to carry out constructing operation and support 600 to form hoop in positioning steel tube.
Further, positioning steel tube can also be divided in couples to the above and below of the periphery of the underground construction of building in advance, and make two paired positioning steel tubes be laid in (as shown in Figure 7) in the perpendicular perpendicular to ground, like this, if the underground construction of building in advance is multi span structure, can be after forming hoop and supporting 600, in hoop supports the plane at 600 places, vertical supporting 620 is set; Wherein, the setting of vertical supporting 620 is specifically as follows: for two paired positioning steel tubes, set the construction hole in the underground space surrounded to the marine riser curtain in each positioning steel tube, and the construction hole is positioned at that hoop supports the plane at 600 places and perpendicular to the perpendicular on ground; Construction hole from one of them positioning steel tube is to the construction hole jacking vertical supporting steel pipe on another positioning steel tube; Therein in positioning steel tube to slip casting in the vertical supporting steel pipe, after slurries (as cement paste) reach intensity, form vertical supporting 620.Wherein, (as welding) fixed respectively on two paired positioning steel tubes 300 in the two ends of vertical supporting 620.Therefore, further strengthened the effect that the marine riser curtain bears its peripheral Water And Earth Pressures.
S107: to the interior slip casting of each positioning steel tube 300.
Particularly, after forming annular brace 600 in above-mentioned steps S106, can, in this step to the interior slip casting of each positioning steel tube 300, further increase the rigidity that is supported 600 waterproof structures that form by marine riser curtain, sealing obstructive level body 400 and hoop.。Wherein, to slip casting in each positioning steel tube, after the slurries of injection (as cement paste) solidify, certain intensity can be reached, the rigidity of waterproof structure can be increased.
To the underground construction of building in advance, after completing and building waterproof structure, constructing underground building in the underground space that the marine riser curtain of waterproof structure surrounds, be specifically as follows: carry out building of underground construction in the underground space surrounded to the marine riser curtain from vertical shaft, place, a sealing obstructive level body position building waterproof structure, abolish building of rear continuation underground construction by this sealing obstructive level body.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 bassoon curtain method (SPR, Super Pipe Roof Method).
Wherein, when constructing underground building, can to the soil body in the underground space in marine riser curtain besieged city, be excavated by methods such as benching tunnelling method, shed frame methods, and can form to the underground construction of building in advance different structural shapes, for example, multiple arch multispan, single arch single span, flat top wall, the bent wall of flat-top etc.; Because the water proof effect of the waterproof structure of the underground construction of building is better, avoided stratum precipitation, therefore, can high efficiency the soil body be excavated the construction speed while having improved constructing underground building.Further, in the process of constructing underground building, can also the cross binding perpendicular to vertical supporting be set in hoop supports the plane at place, further strengthen the effect that the marine riser curtain bears its peripheral Water And Earth Pressures.
And the marine riser curtain can be only as interim canopy protection structure of initial stage, interim canopy protection structure of the initial stage that can also double as and permanent two lining structures; If the interim canopy protection structure using the marine riser curtain as the initial stage, carrying out soil excavation, and, after the waterproofing course of the underground construction of building in advance is set in the underground space surrounded at the marine riser curtain, apply the stressed concrete frame structure of complete liner (facing the cob wall plate thickness is 600～900mm);
Double as interim canopy protection structure of initial stage and permanent two lining structures if will manage curtain, after carrying out soil excavation, and, after the waterproofing course of the underground construction of building in advance is set in the underground space surrounded at the marine riser curtain, apply thin layer liner waterproof concrete structure (facing the cob wall plate thickness is 300～500mm); And the effect of positioning steel tube that can be larger according to diameter in permanent two lining structures, do local cutting or retain, and the positioning steel tube of retaining is made to outward appearance and process.
In fact, the underground construction of building in advance also can comprise some accessory structures, and for some accessory structures of the underground construction of building in advance, can pass through the construction method of waterproof structure of the present invention, the waterproof structure of accessory structure is connected with the waterproof structure of the underground construction of building in advance, and the ring beam of inner lining concrete structure can be set at interface, or the position of the hoop support in adjustment marine riser curtain strengthens the supporting role of interface.
The method of building waterproof structure based on above-mentioned, the waterproof structure of building, as shown in Fig. 2-7, comprising: around marine riser curtain and a plurality of sealing obstructive level body 400 of the periphery of the underground construction 100 of building in advance.
Wherein, the marine riser curtain specifically comprises: at least two positioning steel tubes 300, micro-steel pipe 310; Positioning steel tube 300, be the bearing of trend from the vertical shaft 200 perpendicular to building for the underground construction 100 of building in advance, is laid in the peripheral soil body of the underground construction 100 of building in advance; Micro-steel pipe 310, between two adjacent positioning steel tubes 300, is the peripheral soil body of the underground construction 100 of building in advance from the bearing of trend jacking perpendicular to vertical shaft 200; Between adjacent positioning steel tube and micro-steel pipe, and by fore shaft, be connected between two adjacent micro-steel pipes; And be marked with slurries in each micro-steel pipe.
A plurality of sealing obstructive level bodies 400, parallel being divided in the underground space that the marine riser curtain surrounds, vertical with positioning steel tube 300, and with vertical shaft 200 at a distance of not waiting, the underground water that prevents marine riser curtain bearing of trend enters in the space that marine riser curtain and sealing obstructive level body enclose; Wherein, each sealing obstructive level body 400 be located at and vertical shaft 200 between distance this sealing obstructive level body 400 of equaling to set in advance and the plane of the distance between vertical shaft 200 in; Be to inject slurries to being arranged on slip casting steel pipe in described plane 410, slurries are through slip casting steel pipe 410 after the soil body penetration of slip casting steel pipe 410 peripheries, and the soil body of infiltration slurries reaches to set after water blockoff intensity and forms; Wherein, slip casting steel pipe 410 is to choose at least two positioning steel tubes 300 as after construction steel pipe, set a plurality of through holes in the underground space surrounded to the marine riser curtain in described plane, in each construction steel pipe after, by each through hole, from the underground space surrounded to the marine riser curtain in construction steel pipe, set.
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 pipe 310 is identical with the length of micro-steel pipe 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 of micro-steel pipe 310 adjacent, placed side by side/fluted body fore shaft matches with it, to be connected and fixed adjacent with it micro-steel pipe 310; Micro-steel pipe 310 is by its fluted body fore shaft/male-type fore shaft, and the male-type fore shaft of micro-steel pipe adjacent, placed side by side/fluted body fore shaft matches with it, to be connected and fixed adjacent with it micro-steel pipe; And, on the male-type fore shaft, and scribble or be marked with encapsulant in the fluted body fore shaft, prevent in the underground space that the groundwater seepage of the periphery of marine riser curtain surrounds to the marine riser curtain.
More preferably, the fore shaft of micro-steel pipe 310 be positioned at a side outside the marine riser curtain, along the bearing of trend of micro-steel pipe 310, on the wall of micro-steel pipe 310, every setpoint distance (approximately 0.5 meter), set injected hole 340; And each injected hole 340 disposes valve, valve was closed condition by jacking at micro-steel pipe 310 before the periphery of the underground construction 100 of building in advance; And, for each injected hole 340 of micro-steel pipe 310, the valve of this injected hole 340, for before the interior slip casting of micro-steel pipe 310, is opened this valve the soil body around the fore shaft of micro-steel pipe 310 is carried out to grouting for water blocking.
Further, above-mentioned waterproof structure also comprises: a plurality of hoops support 600;
Each hoop supports 600 between adjacent sealing obstructive level body 400, in the plane parallel with sealing obstructive level body 400, be lateral wall along marine riser curtain inside wall, micro-steel pipe 310, on the cloth set direction perpendicular to positioning steel tube 300:
By being located at construction hole on each positioning steel tube 300 construction hole jacking hoop supporting steel pipe to adjacent positioning steel tube, and after being welded, adjacent hoop supporting steel pipe forms each positioning steel tube 300 is interior;
Perhaps, adopt Mining Method, excavate the soil body by the construction hole of being 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; At the excavation soil body and after connecting one week along described marine riser curtain inside wall, lay hoop and support shaped steel in the excavation formed space of the soil body; In each positioning steel tube, adjacent hoop is supported to shaped steel and connected rear formation;
Wherein, the construction hole is by setting in the interior underground space surrounded to the marine riser curtain of each positioning steel tube 300; And the construction hole set on each positioning steel tube 300 is two, and two construction holes are divided into line perpendicular to two fore shafts of this positioning steel tube 300, cross the both sides on 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 the above and below of the periphery of described underground construction of building in advance in couples, and two paired positioning steel tubes are laid in the perpendicular perpendicular to ground; And, for two paired positioning steel tubes, on each positioning steel tube, in hoop supports the plane at place, perpendicular perpendicular to ground, set the construction hole, and this construction hole is by leading in this positioning steel tube in the underground space that the marine riser curtain surrounds.
Vertical supporting 620, be arranged in the plane that hoop supports 600 places, between paired two positioning steel tubes; Be construction hole on a positioning steel tube from two paired positioning steel tubes to the construction hole jacking vertical supporting steel pipe on another positioning steel tube, form after being individually fixed on described paired two positioning steel tubes by the two ends of vertical supporting steel pipe.
Wherein, the diameter of positioning steel tube is greater than the diameter of micro-steel pipe; Perhaps, the diameter of positioning steel tube is more than or equal to 2 meters, and the diameter of micro-steel pipe is less than 2 meters.
In sum, in technical solution of the present invention, when building waterproof structure, formed around the underground construction of building the in advance marine riser curtain of a week, prevent in the underground space that the groundwater seepage of the periphery of marine riser curtain surrounds to the marine riser curtain, and, by build sealing obstructive level body in the marine riser curtain, prevented that marine riser curtain underground water outer, marine riser curtain bearing of trend from entering in the space that marine riser curtain and sealing obstructive level body enclose; Thereby, strengthened the water proof effect of waterproof structure, make building of underground construction to enclose at marine riser curtain and sealing obstructive level body without hydrospace in constructed, avoided carrying out stratum precipitation, saved construction cost, reduced difficulty of construction.And, can be between adjacent sealing obstructive level body, formation is supported along the hoop of the lateral wall of the inside wall of marine riser curtain, micro-steel pipe, and in hoop supports the plane at place, between paired positioning steel tube, vertical supporting is set, strengthened the effect that the marine riser curtain bears its peripheral Water And Earth Pressures.
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 (17)
1. a method of building waterproof structure, is characterized in that, comprising:
For after its excavating shaft, in the periphery of described underground construction of building in advance, build described waterproof structure for the underground construction of building in advance:
Perpendicular to the bearing of trend of described vertical shaft, at least two positioning steel tubes of the periphery of described underground construction of building in advance laying;
Between the periphery of described underground construction of building in advance, adjacent two positioning steel tubes, perpendicular to the micro-steel pipe of bearing of trend jacking of described vertical shaft; And between adjacent positioning steel tube and micro-steel pipe, and by fore shaft, be connected between two adjacent micro-steel pipes, form the marine riser curtain around described peripheral a week;
To slip casting in each micro-steel pipe, prevent the flexural deformation of described marine riser curtain;
In the underground space surrounded at described marine riser curtain, build a plurality of with described positioning steel tube is vertical, with described vertical shaft apart after the sealing obstructive level body do not waited, build out the described waterproof structure formed by 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 described vertical shaft between distance this sealing obstructive level body of equaling to set in advance and the plane of the distance between described vertical shaft in, set a plurality of through holes in the underground space surrounded to described marine riser curtain in each construction steel pipe; The underground space surrounded to described marine riser curtain in described construction steel pipe by each through hole sets the slip casting steel pipe, to described slip casting steel pipe, inject slurries, described slurries are the soil body penetration to described slip casting steel pipe periphery through described slip casting steel pipe; 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 is identical with the length of described positioning steel tube; The length of the fore shaft of described micro-steel pipe is identical with the length of described micro-steel pipe; And described fore shaft comprises: fluted body fore shaft and male-type fore shaft;
Described between adjacent positioning steel tube and micro-steel pipe, and the mode be connected by fore shaft between two adjacent micro-steel pipes, be specially:
Described positioning steel tube is by its fluted body fore shaft/male-type fore shaft, and the male-type fore shaft of micro-steel pipe adjacent, placed side by side/fluted body fore shaft matches with it, to be connected and fixed adjacent with it micro-steel pipe; And
Described micro-steel pipe is by its fluted body fore shaft/male-type fore shaft, and the male-type fore shaft of micro-steel pipe adjacent, placed side by side/fluted body fore shaft matches with it, to be connected and fixed adjacent with it micro-steel pipe; And
The described bearing of trend perpendicular to described vertical shaft, before at least two positioning steel tubes are laid in the periphery of described underground construction of building in advance, also comprise:
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 pipe, and by fore shaft, be connected between two adjacent micro-steel pipes, and form described marine riser backstage, in the underground space that the groundwater seepage of the periphery of described marine riser curtain surrounds to described marine riser curtain.
3. method as claimed in claim 1 or 2, is characterized in that, the fore shaft of described micro-steel pipe be positioned at a side outside described marine riser curtain, along on the bearing of trend of described micro-steel pipe, wall at described micro-steel pipe, every setpoint distance, having set injected hole; And each injected hole disposes valve, described valve was closed condition by jacking at described micro-steel pipe before the periphery of described underground construction of building in advance; And
Described before slip casting in each micro-steel pipe, also comprise:
For each injected hole of described micro-steel pipe, after opening the valve of this injected hole, by this valve, the soil body around the fore shaft of described micro-steel pipe is carried out to grouting for water blocking.
4. method as claimed in claim 3, is characterized in that, in the described underground space surrounded at described marine riser curtain, build a plurality of with described positioning steel tube is vertical, with described vertical shaft, apart after the sealing obstructive level body do not waited, also comprise:
Between adjacent sealing obstructive level body, in the plane parallel with described sealing obstructive level body, set two construction holes in the underground space surrounded to described marine riser curtain in each positioning steel tube; Wherein, two construction holes are divided into line perpendicular to two fore shafts of this positioning steel tube, cross the both sides on the plane of described line central point;
Along the lateral wall of described marine riser curtain inside wall, micro-steel pipe, on the cloth set direction perpendicular to positioning steel tube, construct as follows:
To the construction hole of adjacent positioning steel tube, the hoop supporting steel pipe is set by each construction hole; In each positioning steel tube, after adjacent hoop supporting steel pipe is welded, 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; Perhaps,
Adopt Mining Method, the construction hole excavation soil body by each construction hole to adjacent positioning steel tube, and set up reinforcing bar grid in the space formed after the excavation soil body, form preliminary bracing; At the excavation soil body and after connecting one week along described marine riser curtain inside wall, lay hoop and support shaped steel in the excavation formed space of the soil body; In each positioning steel tube, after adjacent hoop is supported to shaped steel and connected, be formed between adjacent sealing obstructive level body, the hoop support parallel with described sealing obstructive level body.
5. method as claimed in claim 4, 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 described underground construction of building in advance, is specially:
Described positioning steel tube is divided in couples to the above and below of the periphery of described underground construction of building in advance, and two paired positioning steel tubes are laid in the perpendicular perpendicular to ground.
6. method as claimed in claim 5, is characterized in that, after the described hoop supporting steel pipe be weldingly connected is formed between adjacent sealing obstructive level body, the hoop parallel with described sealing obstructive level body support, also comprises:
Vertical supporting is set in described hoop supports the plane at place, between paired two positioning steel tubes:
For two paired positioning steel tubes, set the construction hole in the underground space surrounded to described marine riser curtain in each positioning steel tube, and the construction hole is positioned at plane that described hoop supports place, perpendicular to the perpendicular on described ground; Construction hole from one of them positioning steel tube is to the construction hole jacking vertical supporting steel pipe on another positioning steel tube; After being individually fixed on described two paired positioning steel tubes by the two ends of described vertical supporting steel pipe, form described vertical supporting.
7. method as claimed in claim 6, is characterized in that, described in described hoop supports the plane at place, between paired two positioning steel tubes, vertical supporting is set after, also comprise:
To slip casting in each positioning steel tube.
8. described method as arbitrary as claim 4-7, is characterized in that, the diameter of described positioning steel tube is greater than the diameter of described micro-steel pipe; Perhaps, the diameter of described positioning steel tube is more than or equal to 2 meters, and the diameter of described micro-steel pipe is less than 2 meters.
9. a method that adopts water proof mode constructing underground building, is characterized in that, comprising:
Adopt described method as arbitrary as claim 1-8 for the underground construction of building in advance, for it builds waterproof structure;
Build described underground construction of building in advance in the underground space that the marine riser curtain of described waterproof structure surrounds.
10. method as claimed in claim 9, is characterized in that, builds described underground construction in the underground space that the described curtain of the marine riser at described waterproof structure surrounds and be specially:
Carry out building of described underground construction of building in advance in the underground space surrounded to described marine riser curtain from described vertical shaft;
Place, a sealing obstructive level body position building described waterproof structure, abolish building of the described underground construction of building in advance of rear continuation by this sealing obstructive level body.
11. a waterproof structure, is characterized in that, comprising: around marine riser curtain and a plurality of sealing obstructive level body of the underground construction periphery of building in advance;
Described marine riser curtain comprises: at least two positioning steel tubes, micro-steel pipe; Described positioning steel tube, be the bearing of trend from the vertical shaft perpendicular to building for described underground construction of building in advance, is laid in the peripheral soil body of described underground construction of building in advance; Described micro-steel pipe, between two adjacent positioning steel tubes, is from the peripheral soil body of the described underground construction of building in advance of bearing of trend jacking perpendicular to described vertical shaft; Between adjacent positioning steel tube and micro-steel pipe, and by fore shaft, be connected between two adjacent micro-steel pipes; And be marked with slurries in each micro-steel pipe;
Described a plurality of sealing obstructive level body, parallel being 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 waiting; Wherein,
Each sealing obstructive level body be located at and described vertical shaft between distance this sealing obstructive level body of equaling to set in advance and the plane of the distance between described vertical shaft in, to inject slurries at the slip casting steel pipe to being 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 reaches to set after water blockoff intensity and forms; Wherein, described slip casting steel pipe be choose at least two positioning steel tubes as construction steel pipe after, set a plurality of through holes in the underground space surrounded to described marine riser curtain in described plane, in each construction steel pipe after, by each through hole, from the underground space surrounded to described marine riser curtain in described construction steel pipe, set.
12. waterproof structure as claimed in claim 11, is characterized in that, 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 pipe is identical with the length of described micro-steel pipe; 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 of micro-steel pipe adjacent, placed side by side/fluted body fore shaft matches with it, to be connected and fixed adjacent with it micro-steel pipe; And
Described micro-steel pipe is by its fluted body fore shaft/male-type fore shaft, and the male-type fore shaft of micro-steel pipe adjacent, placed side by side/fluted body fore shaft matches with it, to be connected and fixed adjacent with it micro-steel pipe; And
On described male-type fore shaft, and scribble or be marked with encapsulant in described fluted body fore shaft, prevent in the underground space that the groundwater seepage of the periphery of described marine riser curtain surrounds to described marine riser curtain.
13. waterproof structure as described as claim 11 or 12, is characterized in that, the fore shaft of described micro-steel pipe be positioned at a side outside described marine riser curtain, along on the bearing of trend of described micro-steel pipe, wall at described micro-steel pipe, every setpoint distance, having set injected hole; And each injected hole disposes valve, described valve was closed condition by jacking at described micro-steel pipe before the periphery of described underground construction of building in advance; And
For each injected hole of described micro-steel pipe, the valve of this injected hole, for before slip casting in described micro-steel pipe, is opened this valve the soil body around the fore shaft of described micro-steel pipe is carried out to grouting for water blocking.
14. waterproof structure as claimed in claim 13, is characterized in that, also comprises: a plurality of hoops support;
Each hoop supports between adjacent sealing obstructive level body, in the plane parallel with described sealing obstructive level body, be along the lateral wall of described marine riser curtain inside wall, micro-steel pipe, on the cloth set direction perpendicular to positioning steel tube:
By being located at the construction hole to adjacent positioning steel tube, construction hole on each positioning steel tube, the hoop supporting steel pipe is set, and form after in each positioning steel tube, adjacent hoop supporting steel pipe being welded; Perhaps,
Adopt Mining Method, excavate the soil body by the construction hole of being 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; At the excavation soil body and after connecting one week along described marine riser curtain inside wall, lay hoop and support shaped steel in the excavation formed space of the soil body; In each positioning steel tube, adjacent hoop is supported to shaped steel and connected rear formation;
Wherein, described construction hole is by setting in the underground space surrounded to described marine riser curtain in each positioning steel tube; And the construction hole set on each positioning steel tube is two, and two construction holes are divided into line perpendicular to two fore shafts of this positioning steel tube, cross the both sides on the plane of described line central point.
15. waterproof structure as claimed in claim 14, is characterized in that, described positioning steel tube is divided into the above and below of the periphery of described underground construction of building in advance in couples, and two paired positioning steel tubes are laid in the perpendicular perpendicular to ground; And
For two paired positioning steel tubes, on each positioning steel tube, set the construction hole in described hoop supports the plane at place, perpendicular perpendicular to described ground, and this construction hole is by leading in this positioning steel tube in the underground space that described marine riser curtain surrounds.
16. waterproof structure as claimed in claim 15, is characterized in that, also comprises: vertical supporting;
Described vertical supporting, be arranged in the plane that described hoop supports place, between paired two positioning steel tubes; Be construction hole on a positioning steel tube from two paired positioning steel tubes to the construction hole jacking vertical supporting steel pipe on another positioning steel tube, form after being individually fixed on described paired two positioning steel tubes by the two ends of described vertical supporting steel pipe.
17. described waterproof structure as arbitrary as claim 14-16 is characterized in that the diameter of described positioning steel tube is greater than the diameter of described micro-steel pipe; Perhaps, the diameter of described positioning steel tube is more than or equal to 2 meters, and the diameter of described micro-steel pipe is less than 2 meters.
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| CN104806274A (en) * | 2015-04-20 | 2015-07-29 | 中建南方投资有限公司 | Large-span long-distance underground space main body supporting integrated structure and construction method |
| CN105240024A (en) * | 2015-09-23 | 2016-01-13 | 中国地质大学（武汉） | Parallel shield tunneling method for extended construction of subway station |
| CN107060803A (en) * | 2016-01-26 | 2017-08-18 | 又炅技术株式会社 | A kind of method for tunnel construction of utilization pipe curtain slip casting |
| 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 |
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| CN104806274A (en) * | 2015-04-20 | 2015-07-29 | 中建南方投资有限公司 | Large-span long-distance underground space main body supporting integrated structure and construction method |
| CN105240024A (en) * | 2015-09-23 | 2016-01-13 | 中国地质大学（武汉） | Parallel shield tunneling method for extended construction of subway station |
| 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 |
| CN107060803A (en) * | 2016-01-26 | 2017-08-18 | 又炅技术株式会社 | A kind of method for tunnel construction of utilization pipe curtain slip casting |
| CN107060803B (en) * | 2016-01-26 | 2020-07-03 | 又炅技术株式会社 | Tunnel construction method by utilizing pipe curtain grouting |
| 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 |
| CN111911168A (en) * | 2020-09-04 | 2020-11-10 | 石家庄铁道大学 | Construction method of shallow-buried and underground-excavated large-span tunnel and permanent support system |
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