CN104880334A - Testing system and method for seepage field model of tunnel in construction and operation periods - Google Patents
Testing system and method for seepage field model of tunnel in construction and operation periods Download PDFInfo
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- CN104880334A CN104880334A CN201510334858.6A CN201510334858A CN104880334A CN 104880334 A CN104880334 A CN 104880334A CN 201510334858 A CN201510334858 A CN 201510334858A CN 104880334 A CN104880334 A CN 104880334A
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Abstract
The invention discloses a testing system and method for a seepage field model of a tunnel in construction and operation periods, and the testing system comprises a seepage field model box body and data collection device. The top of the seepage field model box body is provided with a pressure meter, and the bottom of a side wall of the seepage field model box body is provided with an overflowing hole. The top and bottom of a side wall of the seepage field model box body are respectively provided with an upper water inlet of the model box and a lower water inlet of the model box. Two opposite side walls are respectively provided with a tunnel hole. Two ends of each fixed steel reinforcement cage are fixed on inner walls of the edges of the tunnel holes, and the fixed steel reinforcement cages are respectively wrapped by a soil isolating layer. Peripheral bolts of flange plates are fixed on outer walls of edges of the tunnel holes, and the internal and external steel reinforcement cages are fixed between the two tunnel holes through the flange plates. Inner holes of the flange plates are provided with cover plates. A construction-period soil isolating plate is connected between the internal and external steel reinforcement cages in a threaded manner. A tunnel face water-blocking plate is fixed in the internal steel reinforcement cage in a threaded manner. Moreover, the construction-period soil isolating plate and the tunnel face water-blocking plate are located on the same vertical section. The system can test the conditions of the seepage field of the tunnel conveniently, accurately and truly in the construction and operation periods under the action of the seepage field.
Description
Technical field
The present invention relates to and construct always and run phase seepage field of tunnel model assay systems and test method thereof, belong to civil engineering work test field.
Background technology
The long-term percolating water in tunnel may cause that underground water outside tunnel runs off in a large number, underground water table declines, earth surface water source is exhausted, along with generations such as soil erosion, vegetation deterioration, surface collapses; For tunnel structure, percolating water easily causes lining deformation, vault to cave in, and accelerates the corrosion of anchor pole and bow member, and corrode tunnel auxiliary facility, in addition, surface gathered water also can make environment worsen, and affects traffic safety simultaneously, destroys pavement quality.As can be seen here, solve treatment technology for tunnel seepage water problems will contribute to ensureing tunnel structure safely, extend its serviceable life, protection surrounding ecologic environment, its core is exactly to understand the relation between tunnel structure and seepage field body.Each stage of tunnel excavation, underground percolation field can change thereupon, adopting seepage field of tunnel model test apparatus and test method thereof to test underground seepage field, is that the change of Study of The Underground water, water pressure are on a kind of important means of the impact of tunnel structure and Tunnel Seepage etc.
Numerous domestic scientific research institutions have successively carried out model test design to the water problems in Mining Method and shield tunnel:
(1) " rock mechanics and engineering " the 5th phase in 2007 describes a kind of high hydraulic pressure seepage field of tunnel test device systematic, be made up of water pressure charger, containment housing, tunnel structure and water pressure proving installation 4 part, containment housing steel plate, channel-section steel and joist steel welding processing form, be of a size of 2m × 1m × 1.3m, this system only can carry out simulation test to the prefabricated tunnel structure of circle under constant hydrostatic head effect, cannot realize the simulation of each stage seepage field of constructing tunnel and kinetic head and varying head.
(2) patentee is Southwest Jiaotong University, and Chinese Patent Application No. 201120000959.7 describes a kind of shield tunnel draining type segment lining model test box.This chamber comprises the casing of airtight pressure-bearing, the tunnel model of PVC round tube formation and tank, the impact of draining type segment lining on country rock pore water pressure and vent flow can be studied, but the impact of kinetic head and varying head can not be embodied, also cannot simulate grouting layer constructing tunnel being had to significant impact.
(3) patentee is Shandong University, Chinese Patent Application No. 201110412569.5 describes a kind of submarine tunnel fluid-solid coupling model test system and test method thereof, comprise high strength implosion test structure-steel framing, high-strength armoured-glass seal box, monitoring display system, computing machine parametric controller and pressure water tank, plane and accurate three axle fluid structure interaction mode tests can be simulated, but the simulation that cannot realize grouting and reinforcing layer and different infiltration coefficient lining cutting, can not predict the water yield in tunnel under different head and water discharge.
The model assay systems of the above-mentioned unit of comprehensive analysis, also has the following disadvantages:
1, above-mentioned model assay systems head is usually constant can not regulate and control, and simulate formation water level effect is single, is difficult to effectively support tunnel construction completely, more cannot carry out Seepage to differently descending the city tunnel of height of water level, mountain tunnel and seabed tunnel.
2, the constructing tunnel phase is the important stage of tunneling, understand the seepage field change of constructing tunnel phase, prediction water yield, the test distribution of water pressure of country rock-support system and the impact of face slip casting, can complete most important smoothly to Tunnel Engineering, and above-mentioned pilot system all cannot complete the Seepage in tunneling stage.
3, the change of tunnel perimeter wall rock grouting stabilization zone infiltration coefficient and thickness is larger to underground seepage field, also directly can change the water pressure of tunnel structure and gush (row) water yield, existing model test apparatus is not all considered maybe can not adjust, even if adjustable, also can only be realized by the pre-buried soil body changed in casing, complex operation, causes larger interference to test, and consuming time long, be unfavorable for repeatedly revision test.
Summary of the invention
First goal of the invention of the present invention is to provide a kind of construction and operation phase seepage field of tunnel model assay systems.This system can facilitate, test seepage field effect accurately, truly under constructing tunnel, the water pressure of operation phase, gush (row) water yield and seepage field changes, and can carry out freely configuring and changing to country rock, grouting and reinforcing district, face pre-pouring grout district and the first parameter served as a contrast according to test demand, the situation of reduction tunnel and periphery seepage field thereof to greatest extent.
The present invention realizes the technical scheme that its first goal of the invention takes: a kind of construction and operation phase seepage field of tunnel model assay systems, comprise the casing of percolation model case and gather the data collector of hydraulic pressure and seepage flow, described casing top is provided with tensimeter, be provided with the spout hole of draining bottom wall box, its design feature is:
Compared with prior art, the present invention realizes the beneficial effect of the technical scheme that its first goal of the invention is taked and is:
1. by filling different Rock And Soil simulation country rocks outward every soil layer in casing, thus the different hydrology, the ground geologic condition in tunnel can be simulated, inlet opening on model casing is connected with providing the supply equipment of head, can the seepage field in simulated sea bottom tunnel well; ; Inlet opening under model casing is connected with providing the supply equipment of head, can the seepage field of tunnel, simcity, mountain tunnel well; Thus provide reliable test basis, to ensure the safety in tunnel to the seepage prevention design of Tunnel Engineering and construction.
2., except being fixing between fixing steel reinforcement cage and casing, remainder is demountable structure, and dirigibility is strong; The country rock can filled outward at fixing steel reinforcement cage is constant, Rock And Soil in changing between steel reinforcement cage and outer steel reinforcement cage, simulate under same wall rock condition, grouting and reinforcing district (region between interior steel reinforcement cage and the outer steel reinforcement cage) impact on Tunnel Infiltration amount of different infiltration coefficients; Lining cutting and two linings of tunnel structure also can be adjusted according to actual conditions, simple to operate, practical.
3., by the design of ring flange inner ring bolt and draw-in groove, the independent analogue enlargement of grouting and reinforcing district and tunnel structure can be realized, practicality and dirigibility stronger.
4. construction time soil separating plate and face manger board and be threaded connection between interior steel reinforcement cage and outer steel reinforcement cage, the position changing construction time soil separating plate and face manger board can be required according to actual tests, thus seepage field of tunnel and the water yield thereof that tunnel under construction is excavated to diverse location place is measured in simulation, there is provided reliable test basis to the design of Tunnel Engineering and construction, ensure the safety of constructing tunnel.
Further, on model casing of the present invention, under inlet opening or model casing, inlet opening is connected with movable type water case apparatus, the concrete structure of described mobile water tank device is: portable tank is placed on the lifting table of elevating water tank tower, the water inlet of portable tank is connected by the submersible pump of flexible pipe with the fixed water tank inside be arranged at below lifting table, and the water delivering orifice bottom portable tank is connected with inlet opening under inlet opening on model casing or model casing by flexible pipe.
Like this, by controlling movable type water case apparatus, state tunnel being in hydrostatic head, varying head and kinetic head is studied; Constructing tunnel under kinetic head, hydrostatic head and varying head effect, the water pressure of operation phase can be tested truly, gush (row) water yield and seepage field changes.
Second goal of the invention of the present invention is to provide the test method of a kind of above-mentioned construction and operation phase seepage field of tunnel model assay systems construction simulation phase seepage field of tunnel.Can be facilitated by the method, test seepage field effect accurately, truly under the water pressure of constructing tunnel, water yield and seepage field change, and can carry out freely configuring and changing to country rock, grouting and reinforcing district, face pre-pouring grout district and the first parameter served as a contrast according to test demand, the situation of reduction tunnel and periphery seepage field thereof to greatest extent.
The present invention realizes the technical scheme that its second goal of the invention takes: the test method of a kind of above-mentioned construction and operation phase seepage field of tunnel model assay systems construction simulation phase seepage field of tunnel, and its step is as follows:
A. the compactness layering of the Rock And Soil of simulation country rock by setting is laid, is packed in the casing of percolation model case; And in rock-soil layer pre-buried WG;
The Rock And Soil of simulation country rock is filled on the right side of the construction time soil separating plate B. outside between steel reinforcement cage and interior steel reinforcement cage, fills the reinforcing rock-soil layer of simulation grouting and reinforcing district rock mass in the left side of construction time soil separating plate, pre-buried WG in reinforcing rock-soil layer; Geotextile is fitted on the left of face manger board on steel reinforcement cage inwall, with the lining cutting of simulation tunnel;
C. fill up the Rock And Soil of simulation country rock on the right side of the face manger board in interior steel reinforcement cage, cover the cover plate of the ring flange on right side;
D. the water delivering orifice bottom portable tank is connected with inlet opening under inlet opening on model casing or model casing, and portable tank is adjusted to the height of setting;
E. the hydraulic pressure of Rock And Soil between steel reinforcement cage and outer steel reinforcement cage in gathering, the hydraulic pressure of the Rock And Soil laid in casing and do not cover the water yield of ring flange place outflow of cover plate; Terminate test, namely simulation draws seepage field distribution and the tunnel water yield in face dash situation of the constructing tunnel phase under specific country rock, grouting and reinforcing condition;
F. the face manger board in removing in steel reinforcement cage, the hydraulic pressure of the Rock And Soil in Resurvey between steel reinforcement cage and outer steel reinforcement cage, the hydraulic pressure of the Rock And Soil laid in casing and do not cover the water yield of ring flange place outflow of cover plate; Terminate test, namely simulation draws seepage field distribution and the total yield of the constructing tunnel phase under specific country rock, grouting and reinforcing condition.
3rd goal of the invention of the present invention is to provide the test method of a kind of above-mentioned construction and operation phase seepage field of tunnel model assay systems simulation operation phase seepage field of tunnel.The method can facilitate, test seepage field effect accurately, truly under the water pressure of tunnel operation phase, water discharge and seepage field change, and can carry out freely configuring and changing according to the parameter of test demand to country rock, grouting and reinforcing district, lining cutting, the situation of reduction tunnel and periphery seepage field thereof to greatest extent.
The present invention realizes the testing program that its 3rd goal of the invention takes: the test method of a kind of above-mentioned construction and operation phase seepage field of tunnel model assay systems simulation operation phase seepage field of tunnel, and its step is as follows:
A. the construction time soil separating plate between outer steel reinforcement cage and interior steel reinforcement cage and the face manger board in interior steel reinforcement cage is removed;
B. the Rock And Soil of simulation country rock is laid by different compactness layering, is packed in the casing of percolation model case; And in Rock And Soil pre-buried WG;
C. fill the reinforcing rock-soil layer of simulation grouting and reinforcing district rock mass outside between steel reinforcement cage and interior steel reinforcement cage, and reinforce pre-buried WG in rock-soil layer; Geotextile is fitted on interior steel reinforcement cage inwall, with the lining cutting of simulation tunnel; In interior steel reinforcement cage, insert end face is horseshoe-shaped tubulose precast concrete two lining;
D. the water delivering orifice bottom portable tank is connected with inlet opening under inlet opening on model casing or model casing, and portable tank is adjusted to the height of setting;
The hydraulic pressure of the Rock And Soil in E. gathering between steel reinforcement cage and outer steel reinforcement cage, the water yield that the hydraulic pressure of the Rock And Soil laid in casing and ring flange place flow out; Terminate test, namely simulation draws seepage field distribution and the water discharge of the tunnel operation phase under specific country rock, grouting and reinforcing condition.
Below in conjunction with the drawings and specific embodiments, the present invention is described further.
Accompanying drawing explanation
Fig. 1 is the overall cross-sectional view (not drawing movable type water case apparatus) of the embodiment of the present invention.
Fig. 2 is the embodiment of the present invention when carrying out the test of tunnel under construction seepage field, measures the cross-sectional view (not drawing movable type water case apparatus) of the water yield of tunnel in face dash situation.
Fig. 3 is the embodiment of the present invention when carrying out the test of tunnel under construction seepage field, measures the cross-sectional view (not drawing movable type water case apparatus) of tunnel total yield.
Fig. 4 is the cross-sectional view (do not draw movable type water case apparatus) of the embodiment of the present invention when carrying out the seepage field of tunnel test of operation phase.
Fig. 5 is that the embodiment of the present invention is when the seepage field in simulated sea bottom tunnel and the connection diagram of movable type water case apparatus.
Fig. 6 be the embodiment of the present invention when the seepage field of tunnel, simcity, mountain tunnel, with the connection diagram of movable type water case apparatus.
Embodiment
Fig. 1 illustrates, a kind of embodiment of the present invention is: a kind of construction and operation phase seepage field of tunnel model assay systems, comprise the casing 1 of percolation model case and gather the data collector of hydraulic pressure and seepage flow, described casing 1 top is provided with tensimeter 2, casing 1 sidewall bottom is provided with the spout hole 5 of draining, and its design feature is:
The sidewall top of described casing 1 is provided with inlet opening 12 on model casing, and sidewall bottom is provided with inlet opening 13 under model casing; The two side that casing 1 is relative has Tunnel-hole;
The two ends of fixing steel reinforcement cage 6 are fixedly welded on the peritreme inwall of Tunnel-hole, Tunnel-hole is aimed at interior steel reinforcement cage 8 two ends in outer steel reinforcement cage 7 and outer steel reinforcement cage 7, and the two ends of interior steel reinforcement cage 8 are connected with ring flange 3 by the inner ring bolt 3a of ring flange 3, the outer ring bolt 3b of ring flange 3 is screwed on the peritreme outer wall of the Tunnel-hole of casing 1, and the two ends of outer steel reinforcement cage 7 are sticked on the draw-in groove of ring flange 3 inside surface; Ring flange 3 is provided with the cover plate 4 that can cover ring flange 3 endoporus;
The shape of the endoporus of the end face of fixing steel reinforcement cage 6, interior steel reinforcement cage 8, outer steel reinforcement cage 7, Tunnel-hole and ring flange 3 is the shape of a hoof;
Fixing steel reinforcement cage 6 be wrapped with by finer wire net and nonwoven fabrics mix every soil layer 9;
Be threaded between steel reinforcement cage 7 and interior steel reinforcement cage 8 construction time soil separating plate 10 outside; On the inside surface of interior steel reinforcement cage 8, screw thread is fixed with face manger board 11; And construction time soil separating plate 10 and face manger board 11 are positioned on same vertical cross section.
On model casing described in this example, under inlet opening 12 or model casing, inlet opening 13 is connected with movable type water case apparatus, the concrete structure of described mobile water tank device is: portable tank 14 is placed on the lifting table of elevating water tank tower 15, the water inlet 14a of portable tank 14 is connected by the submersible pump 17 of flexible pipe with fixed water tank 16 inside be arranged at below lifting table, and the water delivering orifice 14b bottom portable tank 14 is connected with inlet opening 13 under inlet opening on model casing 12 or model casing by flexible pipe.Water delivering orifice 14b bottom portable tank 14 is connected with inlet opening under model casing 13 by flexible pipe, can tunnel, simcity, mountain tunnel seepage field, as shown in Figure 6.Water delivering orifice 14b bottom portable tank 14 is connected with inlet opening on model casing 12 by flexible pipe, can the seepage field in simulated sea bottom tunnel, as shown in Figure 5.
Fig. 2, Fig. 3 and Fig. 1, Fig. 5 illustrate, with the construction described in this example and operation phase seepage field of tunnel model assay systems, the test method step of the tunnel under construction seepage field in simulated sea bottom tunnel is as follows:
A. the compactness layering of the Rock And Soil of simulation country rock by setting is laid, is packed in the casing 1 of percolation model case; And in rock-soil layer pre-buried WG;
The Rock And Soil of simulation country rock is filled on the right side of the construction time soil separating plate 10 B. outside between steel reinforcement cage 7 and interior steel reinforcement cage 8, fills the reinforcing rock-soil layer of simulation grouting and reinforcing district rock mass in the left side of construction time soil separating plate 10, pre-buried WG in reinforcing rock-soil layer; Geotextile is fitted on the left of face manger board 11 on steel reinforcement cage 8 inwall, with the lining cutting of simulation tunnel;
C. fill up the Rock And Soil of simulation country rock on the right side of the face manger board 11 in interior steel reinforcement cage 8, cover the cover plate 4 of the ring flange on right side;
D. the water delivering orifice 14b bottom portable tank 14 is connected with inlet opening on model casing 12, and portable tank 14 is adjusted to the height of setting;
E. the hydraulic pressure of Rock And Soil between steel reinforcement cage 8 and outer steel reinforcement cage 7 in gathering, the hydraulic pressure of the Rock And Soil laid in casing 1 and do not cover the water yield of ring flange 3 place outflow of cover plate 4; Terminate test, namely simulation draws seepage field distribution and the tunnel water yield in face dash situation of the constructing tunnel phase under specific country rock, grouting and reinforcing condition;
F. the face manger board 11 in removing in steel reinforcement cage 8, the hydraulic pressure of the Rock And Soil in Resurvey between steel reinforcement cage 8 and outer steel reinforcement cage 7, the hydraulic pressure of the Rock And Soil laid in casing 1 and do not cover the water yield of ring flange 3 place outflow of cover plate 4; Terminate test, namely simulation draws seepage field distribution and the total yield of the constructing tunnel phase under specific country rock, grouting and reinforcing condition.
Fig. 2, Fig. 3 and Fig. 1, Fig. 6 illustrate, with the construction described in this example and operation phase seepage field of tunnel model assay systems, the test method step of the tunnel under construction seepage field of tunnel, simcity or mountain tunnel is as follows:
A. the compactness layering of the Rock And Soil of simulation country rock by setting is laid, is packed in the casing 1 of percolation model case; And in rock-soil layer pre-buried WG;
The Rock And Soil of simulation country rock is filled on the right side of the construction time soil separating plate 10 B. outside between steel reinforcement cage 7 and interior steel reinforcement cage 8, fills the reinforcing rock-soil layer of simulation grouting and reinforcing district rock mass in the left side of construction time soil separating plate 10, pre-buried WG in reinforcing rock-soil layer; Geotextile is fitted on the left of face manger board 11 on steel reinforcement cage 8 inwall, with the lining cutting of simulation tunnel;
C. fill up the Rock And Soil of simulation country rock on the right side of the face manger board 11 in interior steel reinforcement cage 8, cover the cover plate 4 of the ring flange on right side;
D. the water delivering orifice 14b bottom portable tank 14 is connected with inlet opening under model casing 13, and portable tank 14 is adjusted to the height of setting;
E. the hydraulic pressure of Rock And Soil between steel reinforcement cage 8 and outer steel reinforcement cage 7 in gathering, the hydraulic pressure of the Rock And Soil laid in casing 1 and do not cover the water yield of ring flange 3 place outflow of cover plate 4; Terminate test, namely simulation draws seepage field distribution and the tunnel water yield in face dash situation of the constructing tunnel phase under specific country rock, grouting and reinforcing condition;
F. the face manger board 11 in removing in steel reinforcement cage 8, the hydraulic pressure of the Rock And Soil in Resurvey between steel reinforcement cage 8 and outer steel reinforcement cage 7, the hydraulic pressure of the Rock And Soil laid in casing 1 and do not cover the water yield of ring flange 3 place outflow of cover plate 4; Terminate test, namely simulation draws seepage field distribution and the total yield of the constructing tunnel phase under specific country rock, grouting and reinforcing condition.
Fig. 4, Fig. 1 and Fig. 5 illustrate, with the construction described in this example and operation phase seepage field of tunnel model assay systems, the test method step of the operation phase seepage field of tunnel in simulated sea bottom tunnel is as follows:
A. the construction time soil separating plate 10 between outer steel reinforcement cage 7 and interior steel reinforcement cage 8 and the face manger board 11 in interior steel reinforcement cage 8 is removed;
B. the Rock And Soil of simulation country rock is laid by different compactness layering, is packed in the casing 1 of percolation model case; And in Rock And Soil pre-buried WG;
C. fill the reinforcing rock-soil layer of simulation grouting and reinforcing district rock mass outside between steel reinforcement cage 7 and interior steel reinforcement cage 8, and reinforce pre-buried WG in rock-soil layer; Geotextile is fitted on interior steel reinforcement cage 8 inwall, with the lining cutting of simulation tunnel; In interior steel reinforcement cage 8, insert end face is horseshoe-shaped tubulose precast concrete two lining;
D. the water delivering orifice 14b bottom portable tank 14 is connected with inlet opening on model casing 12, and portable tank 14 is adjusted to the height of setting;
The hydraulic pressure of the Rock And Soil in E. gathering between steel reinforcement cage 8 and outer steel reinforcement cage 7, the water yield that the hydraulic pressure of the Rock And Soil laid in casing 1 and ring flange 3 place flow out; Terminate test, namely simulation draws seepage field distribution and the water discharge of the tunnel operation phase under specific country rock, grouting and reinforcing condition.
Fig. 4, Fig. 1 and Fig. 6 illustrate, with the construction described in this example and operation phase seepage field of tunnel model assay systems, the test method step of the operation phase seepage field of tunnel of tunnel, simcity or mountain tunnel is as follows:
A. the construction time soil separating plate 10 between outer steel reinforcement cage 7 and interior steel reinforcement cage 8 and the face manger board 11 in interior steel reinforcement cage 8 is removed;
B. the Rock And Soil of simulation country rock is laid by different compactness layering, is packed in the casing 1 of percolation model case; And in Rock And Soil pre-buried WG;
C. fill the reinforcing rock-soil layer of simulation grouting and reinforcing district rock mass outside between steel reinforcement cage 7 and interior steel reinforcement cage 8, and reinforce pre-buried WG in rock-soil layer; Geotextile is fitted on interior steel reinforcement cage 8 inwall, with the lining cutting of simulation tunnel; In interior steel reinforcement cage 8, insert end face is horseshoe-shaped tubulose precast concrete two lining;
D. the water delivering orifice 14b bottom portable tank 14 is connected with inlet opening under model casing 13, and portable tank 14 is adjusted to the height of setting;
The hydraulic pressure of the Rock And Soil in E. gathering between steel reinforcement cage 8 and outer steel reinforcement cage 7, the water yield that the hydraulic pressure of the Rock And Soil laid in casing 1 and ring flange 3 place flow out; Terminate test, namely simulation draws seepage field distribution and the water discharge of the tunnel operation phase under specific country rock, grouting and reinforcing condition.
Claims (4)
1. a construction and operation phase seepage field of tunnel model assay systems, comprise the casing (1) of percolation model case and gather the data collector of hydraulic pressure and seepage flow, described casing (1) top is provided with tensimeter (2), casing (1) sidewall bottom is provided with the spout hole (5) of draining, it is characterized in that:
The sidewall top of described casing (1) is provided with inlet opening on model casing (12), and sidewall bottom is provided with inlet opening (13) under model casing; The two side that casing (1) is relative has Tunnel-hole;
The two ends of fixing steel reinforcement cage (6) are fixedly welded on the peritreme inwall of Tunnel-hole, Tunnel-hole is aimed at interior steel reinforcement cage (8) two ends in outer steel reinforcement cage (7) and outer steel reinforcement cage (7), and the two ends of interior steel reinforcement cage (8) are connected with ring flange (3) by the inner ring bolt (3a) of ring flange (3), the outer ring bolt (3b) of ring flange (3) is screwed on the peritreme outer wall of the Tunnel-hole of casing (1), and the two ends of outer steel reinforcement cage (7) are sticked on the draw-in groove of ring flange (3) inside surface; Ring flange (3) is provided with the cover plate (4) that can cover ring flange (3) endoporus;
The shape of the endoporus of the end face of fixing steel reinforcement cage (6), interior steel reinforcement cage (8), outer steel reinforcement cage (7), Tunnel-hole and ring flange (3) is the shape of a hoof;
Fixing steel reinforcement cage (6) be wrapped with by finer wire net and nonwoven fabrics mix every soil layer (9);
Be threaded between steel reinforcement cage (7) and interior steel reinforcement cage (8) construction time soil separating plate (10) outside; On the inside surface of interior steel reinforcement cage (8), screw thread is fixed with face manger board (11); And construction time soil separating plate (10) and face manger board (11) are positioned on same vertical cross section.
2. one construction according to claim 1 and operation phase seepage field of tunnel model assay systems, it is characterized in that: on described model casing, under inlet opening (12) or model casing, inlet opening (13) is connected with movable type water case apparatus, the concrete structure of described mobile water tank device is: portable tank (14) is placed on the lifting table of elevating water tank tower (15), the water inlet (14a) of portable tank (14) is connected by the submersible pump (17) that flexible pipe is inner with the fixed water tank (16) be arranged at below lifting table, the water delivering orifice (14b) of portable tank (14) bottom is connected with inlet opening (13) under inlet opening on model casing (12) or model casing by flexible pipe.
3., by construction according to claim 2 and a test method of runing seepage field of tunnel model assay systems phase, seepage field of tunnel construction simulation phase, its step is as follows:
A. the compactness layering of the Rock And Soil of simulation country rock by setting is laid, is packed in the casing (1) of percolation model case; And in rock-soil layer pre-buried WG;
The Rock And Soil of simulation country rock is filled on the right side of the construction time soil separating plate (10) B. outside between steel reinforcement cage (7) and interior steel reinforcement cage (8), the reinforcing rock-soil layer of simulation grouting and reinforcing district rock mass is filled, pre-buried WG in reinforcing rock-soil layer in the left side of construction time soil separating plate (10); Geotextile is fitted on interior steel reinforcement cage (8) inwall in face manger board (11) left side, with the lining cutting of simulation tunnel;
C. the Rock And Soil of simulation country rock is filled up on face manger board (11) right side in interior steel reinforcement cage (8), covers the cover plate (4) of the ring flange on right side;
D. the water delivering orifice (14b) of portable tank (14) bottom is connected with inlet opening (13) under inlet opening on model casing (12) or model casing, and portable tank (14) is adjusted to the height of setting;
E. the hydraulic pressure of Rock And Soil between steel reinforcement cage (8) and outer steel reinforcement cage (7) in gathering, the hydraulic pressure of the Rock And Soil laid in casing (1) and do not cover the water yield of ring flange (3) place outflow of cover plate (4); Terminate test, namely simulation draws seepage field distribution and the tunnel water yield in face dash situation of the constructing tunnel phase under specific country rock, grouting and reinforcing condition;
F. the face manger board (11) in removing in steel reinforcement cage (8), the hydraulic pressure of the Rock And Soil in Resurvey between steel reinforcement cage (8) and outer steel reinforcement cage (7), the hydraulic pressure of the Rock And Soil laid in casing (1) and do not cover the water yield of ring flange (3) place outflow of cover plate (4); Terminate test, namely simulation draws seepage field distribution and the total yield of the constructing tunnel phase under specific country rock, grouting and reinforcing condition.
4. simulate a test method for operation phase seepage field of tunnel with construction according to claim 2 and operation phase seepage field of tunnel model assay systems, its step is as follows:
A. the construction time soil separating plate (10) between outer steel reinforcement cage (7) and interior steel reinforcement cage (8) and the face manger board (11) in interior steel reinforcement cage (8) is removed;
B. the Rock And Soil of simulation country rock is laid by different compactness layering, is packed in the casing (1) of percolation model case; And in Rock And Soil pre-buried WG;
C. fill the reinforcing rock-soil layer of simulation grouting and reinforcing district rock mass outside between steel reinforcement cage (7) and interior steel reinforcement cage (8), and reinforce pre-buried WG in rock-soil layer; Geotextile is fitted on interior steel reinforcement cage (8) inwall, with the lining cutting of simulation tunnel; In interior steel reinforcement cage (8), insert end face is horseshoe-shaped tubulose precast concrete two lining;
D. the water delivering orifice (14b) of portable tank (14) bottom is connected with inlet opening (13) under inlet opening on model casing (12) or model casing, and portable tank (14) is adjusted to the height of setting;
The hydraulic pressure of the Rock And Soil in E. gathering between steel reinforcement cage (8) and outer steel reinforcement cage (7), the water yield that the hydraulic pressure of the Rock And Soil laid in casing (1) and ring flange (3) place flow out; Terminate test, namely simulation draws seepage field distribution and the water discharge of the tunnel operation phase under specific country rock, grouting and reinforcing condition.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN106710434A (en) * | 2017-02-28 | 2017-05-24 | 山东大学 | 3D printed water-permeable pavement scale simulation device and method under action of runoff |
| CN107330191A (en) * | 2017-06-30 | 2017-11-07 | 暨南大学 | The Numerical Analysis methods of Groundwater iron shield tunnel construction influence |
| CN108008118A (en) * | 2017-12-31 | 2018-05-08 | 浙江大学 | Seabed tunnel dynamic response experimental rig under tide simulation load action |
| CN108426706A (en) * | 2018-02-02 | 2018-08-21 | 西南交通大学 | A kind of high hydraulic pressure area shield formula TBM Segments Design test-beds |
| CN109470625A (en) * | 2018-12-19 | 2019-03-15 | 中国地质大学（武汉） | A kind of infiltrative model test apparatus of simulation Faults in Tunnels country rock |
| CN111983193A (en) * | 2020-08-26 | 2020-11-24 | 西南交通大学 | High ground temperature country rock tunnel structure analogue test device |
| CN112504935A (en) * | 2020-11-25 | 2021-03-16 | 青岛理工大学 | Tunnel seepage test device |
| CN113358544A (en) * | 2021-07-01 | 2021-09-07 | 西南交通大学 | Method for accurately measuring infiltration line for tunnel steady-state seepage field model test |
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| CN105352867B (en) * | 2015-09-30 | 2018-05-04 | 四川大学 | Simulate the test method of more gap set medium tunnel seepage flow |
| CN105352867A (en) * | 2015-09-30 | 2016-02-24 | 四川大学 | Simulation multi-gap assembled medium tunnel seepage test method |
| CN106710434A (en) * | 2017-02-28 | 2017-05-24 | 山东大学 | 3D printed water-permeable pavement scale simulation device and method under action of runoff |
| CN107330191B (en) * | 2017-06-30 | 2021-02-05 | 暨南大学 | Numerical simulation analysis method for influence of underground water on subway shield tunnel construction |
| CN107330191A (en) * | 2017-06-30 | 2017-11-07 | 暨南大学 | The Numerical Analysis methods of Groundwater iron shield tunnel construction influence |
| CN108008118A (en) * | 2017-12-31 | 2018-05-08 | 浙江大学 | Seabed tunnel dynamic response experimental rig under tide simulation load action |
| CN108426706A (en) * | 2018-02-02 | 2018-08-21 | 西南交通大学 | A kind of high hydraulic pressure area shield formula TBM Segments Design test-beds |
| CN108426706B (en) * | 2018-02-02 | 2023-10-17 | 西南交通大学 | Shield type TBM tunnel segment design test bench for high water pressure area |
| CN109470625A (en) * | 2018-12-19 | 2019-03-15 | 中国地质大学（武汉） | A kind of infiltrative model test apparatus of simulation Faults in Tunnels country rock |
| CN111983193A (en) * | 2020-08-26 | 2020-11-24 | 西南交通大学 | High ground temperature country rock tunnel structure analogue test device |
| CN112504935A (en) * | 2020-11-25 | 2021-03-16 | 青岛理工大学 | Tunnel seepage test device |
| CN113358544A (en) * | 2021-07-01 | 2021-09-07 | 西南交通大学 | Method for accurately measuring infiltration line for tunnel steady-state seepage field model test |
| CN113358544B (en) * | 2021-07-01 | 2023-04-11 | 西南交通大学 | Method for accurately measuring infiltration line for tunnel steady-state seepage field model test |
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