CN109026144B - A kind of seabed tunnel active control type guarded drainage System Design method and system - Google Patents
A kind of seabed tunnel active control type guarded drainage System Design method and system Download PDFInfo
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- CN109026144B CN109026144B CN201810845980.3A CN201810845980A CN109026144B CN 109026144 B CN109026144 B CN 109026144B CN 201810845980 A CN201810845980 A CN 201810845980A CN 109026144 B CN109026144 B CN 109026144B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
- E21F16/02—Drainage of tunnels
Abstract
The invention discloses a kind of seabed tunnel active control type guarded drainage System Design method and system.The described method includes: obtaining seabed tunnel engineering parameter and seabed tunnel allows displacement；The original water percolating capacity of tunnel surrounding is determined according to the seabed tunnel engineering parameter；Judge whether the original water percolating capacity of the tunnel surrounding is greater than the seabed tunnel and allows displacement, if so, obtaining using tunnel structure water percolating capacity corresponding to multiple and different waterproof and drain measures and calculating the water ballast(ing) that multiple and different waterproof and drain measures are undertaken；If it is not, determining active control type guarded drainage system according to the tunnel structure water percolating capacity and the water ballast(ing).The subjectivity that can reduce seabed tunnel waterproof and drainage design using design method provided by the present invention and system improves its science；Simultaneously can avoid waste, eliminate because design it is unreasonable caused by safety for tunnel engineering hidden danger.
Description
Technical field
The present invention relates to seabed tunnels to drain field, more particularly to a kind of seabed tunnel active control type guarded drainage system
Design method and system.
Background technique
Seabed tunnel is embedded under sea bed, has unlimited water source to feed it, and is limited by V-arrangement longitudinal slope, nothing
Method realizes natural drainage, can only be by artificial drainage, and seabed tunnel receiving head is big, acts on the water ballast(ing) in supporting construction
It is often larger, thus during the reasonability of waterproof and drainage design is the safety and operation for determining supporting construction effluent cost it is big
It is small.
In domestic and international Tunnel Engineering, common guarded drainage mode can be divided into 2 kinds of conductivity type of Totally-enclosed-type and row.Using totally-enclosed
The anti-water tunnel of mode, supporting construction will be born and the substantially comparable external water pressure of underground water head；And mode waterproof is led using row,
It can be reduced the external water pressure acted in supporting construction, and reduce its probability that deterioration leakage occurs, but to control underground water
Row's amount of leading, and prevent drainage system from blocking.It is past although proposing the design principle of " controlled drainage " in current seabed tunnel
Toward only considering the plugging function of secondary liner structure, therefore often result in that secondary lining design is overly conservative and to bear water pressure excessive
Or cause effluent cost during operation unbearable when designing relatively thin.
Therefore, existing seabed tunnel " controlled drainage " waterproof and drainage design method only emphasizes the plugging function of secondary lining, or
It causes effluent cost excessive unacceptable because emphasizing structure safety, or makes structure bear flood because considering running cost
Load and relatively danger, i.e., existing seabed tunnel " controlled drainage " guarded drainage method do not have objective theoretical foundation, can only pass through
Artificial experience designs waterproof and water drainage system causes guarded drainage effect poor, tunnel so that seabed tunnel waterproof and water drainage system can not be rationally designed
The low problem of road working security.
Summary of the invention
The object of the present invention is to provide a kind of seabed tunnel active control type guarded drainage System Design method and system, with solution
Certainly existing seabed tunnel guarded drainage effect is poor, the low problem of safety for tunnel engineering.
To achieve the above object, the present invention provides following schemes:
A kind of seabed tunnel active control type guarded drainage System Design method, comprising:
Obtaining seabed tunnel engineering parameter and seabed tunnel allows displacement；The seabed tunnel engineering parameter includes opening
Seepage field variation range caused by digging, protolith infiltration coefficient, tunnel center are far from sea level distance and equivalent excavation radius；It is described
Seabed tunnel allows displacement to be to determine with reference to the green letter tunnel of Japan and Norway's seabed tunnel to the regulation for allowing displacement；
The original water percolating capacity of tunnel surrounding is determined according to the seabed tunnel engineering parameter；
Judge whether the original water percolating capacity of the tunnel surrounding is greater than the seabed tunnel and allows displacement, obtains the first judgement
As a result；
If first judging result is expressed as the original water percolating capacity of the tunnel surrounding to allow to arrange greater than the seabed tunnel
Water obtains using tunnel structure water percolating capacity corresponding to multiple and different waterproof and drain measures and calculates multiple and different waterproof and drain measures
The water ballast(ing) undertaken；The waterproof and drain measure includes fixing collar waterproof and drain measure, preliminary bracing waterproof and drain measure and secondary
Lining cutting waterproof and drain measure；The tunnel structure water percolating capacity includes using the first tunnel corresponding to the fixing collar waterproof and drain measure
Structure water percolating capacity, using the second tunnel structure water percolating capacity corresponding to the preliminary bracing waterproof and drain measure and use secondary lining
Build third tunnel structure water percolating capacity corresponding to waterproof and drain measure；The water ballast(ing) includes taking the fixing collar waterproof and drain measure
The first water ballast(ing), take the second water ballast(ing) of the preliminary bracing waterproof and drain measure and take the secondary lining guarded drainage
The third water ballast(ing) of measure；
Active control type guarded drainage system is determined according to the tunnel structure water percolating capacity and the water ballast(ing).
Optionally, described that the original water percolating capacity of tunnel surrounding is determined according to the seabed tunnel engineering parameter, it specifically includes:
According to formulaDetermine the original water percolating capacity of tunnel surrounding；Wherein, Q1It is original for tunnel surrounding
Water percolating capacity, R0Cause seepage field variation range, k to excavatesFor protolith infiltration coefficient, h0It is tunnel center far from sea level distance, r0
For equivalent excavation radius, h3For water head in tunnel.
Optionally, the water ballast(ing) for calculating multiple and different waterproof and drain measures and being undertaken, specifically includes:
According to formulaIt determines
Take the first water ballast(ing) of the fixing collar waterproof and drain measure；
According to formula
Determine the second water ballast(ing) for taking the preliminary bracing waterproof and drain measure；
According to formula
Determine the third water ballast(ing) for taking the secondary lining waterproof and drain measure；Wherein, p1For the first water ballast(ing)；p2For the second water ballast(ing)；
p3For third water ballast(ing)；hgTo undertake head using the fixing collar waterproof and drain measure；h1To use the anti-row of the preliminary bracing
Water measure undertakes head；h2To undertake head using the secondary lining waterproof and drain measure；γwFor density of sea water.
Optionally, described that active control type guarded drainage body is determined according to the tunnel structure water percolating capacity and the water ballast(ing)
System, specifically includes:
It obtains and takes the first limit water ballast(ing) of the fixing collar waterproof and drain measure, the preliminary bracing guarded drainage is taken to arrange
The second limit water ballast(ing) for applying and the third limit water ballast(ing) for taking the secondary lining waterproof and drain measure；
Judge whether the second tunnel structure water percolating capacity is greater than the seabed tunnel and allows displacement, obtains the second judgement
As a result；
If second judging result is expressed as the second tunnel structure water percolating capacity to allow to arrange greater than the seabed tunnel
Water, judges whether second water ballast(ing) is less than second limit water ballast(ing), obtains third judging result；
If the third judging result is expressed as second water ballast(ing) less than second limit water ballast(ing), described in judgement
Whether third water ballast(ing) is less than third limit water ballast(ing), obtains the 4th judging result；
If the 4th judging result is expressed as the third water ballast(ing) less than third limit water ballast(ing), determine described in using
Preliminary bracing waterproof and drain measure is active control type guarded drainage system；
If second judging result is expressed as the second tunnel structure water percolating capacity to be allowed no more than the seabed tunnel
Displacement, judges whether the third tunnel structure water percolating capacity is greater than the seabed tunnel and allows displacement, obtains the 5th judgement
As a result；
If the 5th judging result is expressed as the third tunnel structure water percolating capacity to allow to arrange greater than the seabed tunnel
Water, determination use the secondary lining waterproof and drain measure for active control type guarded drainage system.
A kind of seabed tunnel active control type guarded drainage System Design method, comprising:
Parameter acquisition module allows displacement for obtaining seabed tunnel engineering parameter and seabed tunnel；The seabed
Tunnel Engineering parameter include seepage field variation range caused by excavating, protolith infiltration coefficient, tunnel center far from sea level distance with
And equivalent excavation radius；The seabed tunnel allows displacement to be with reference to the green letter tunnel of Japan and Norway's seabed tunnel to permission
The regulation determination of displacement；
The original water percolating capacity determining module of tunnel surrounding, for determining tunnel surrounding original according to the seabed tunnel engineering parameter
Beginning water percolating capacity；
First judgment module allows to arrange for judging whether the original water percolating capacity of the tunnel surrounding is greater than the seabed tunnel
Water obtains the first judging result；
Tunnel structure water percolating capacity and water ballast(ing) determining module, if being expressed as the tunnel for first judging result
The original water percolating capacity of country rock, which is greater than the seabed tunnel, allows displacement, obtains using tunnel corresponding to multiple and different waterproof and drain measures
Road structure water percolating capacity simultaneously calculates the water ballast(ing) that multiple and different waterproof and drain measures are undertaken；The waterproof and drain measure includes that fixing collar is anti-
Drainage measure, preliminary bracing waterproof and drain measure and secondary lining waterproof and drain measure；The tunnel structure water percolating capacity includes using
It is first tunnel structure water percolating capacity corresponding to the fixing collar waterproof and drain measure, right using preliminary bracing waterproof and drain measure institute
Third tunnel structure water percolating capacity corresponding to the second tunnel structure water percolating capacity and use secondary lining waterproof and drain measure answered；Institute
Water ballast(ing) is stated to include the first water ballast(ing) for taking the fixing collar waterproof and drain measure, take the preliminary bracing waterproof and drain measure
Second water ballast(ing) and the third water ballast(ing) for taking the secondary lining waterproof and drain measure；
Active control type guarded drainage System Design module, for according to the tunnel structure water percolating capacity and the water ballast(ing)
Determine active control type guarded drainage system.
Optionally, the original water percolating capacity determining module of the tunnel surrounding specifically includes:
The original water percolating capacity determination unit of tunnel surrounding, for according to formulaDetermine tunnel surrounding
Original water percolating capacity；Wherein, Q1For the original water percolating capacity of tunnel surrounding, R0Cause seepage field variation range, k to excavatesFor protolith infiltration
Coefficient, h0It is tunnel center far from sea level distance, r0For equivalent excavation radius, h3For water head in tunnel.
Optionally, the tunnel structure water percolating capacity and water ballast(ing) determining module specifically include:
First water ballast(ing) determination unit, for according to formulaIt determines and takes the fixing collar anti-
First water ballast(ing) of drainage measure；
Second water ballast(ing) determination unit, for according to formulaThe initial stage is taken in determination
Second water ballast(ing) of supporting waterproof and drain measure；
Third water ballast(ing) determination unit, for according to formulaDetermination is taken described secondary
The third water ballast(ing) of lining cutting waterproof and drain measure；Wherein, p1For the first water ballast(ing)；p2For the second water ballast(ing)；p3For third water ballast(ing)；
hgTo undertake head using the fixing collar waterproof and drain measure；h1To undertake water using the preliminary bracing waterproof and drain measure
Head；h2To undertake head using the secondary lining waterproof and drain measure；γwFor density of sea water.
Optionally, the active control type guarded drainage System Design module specifically includes:
Limit water ballast(ing) acquiring unit, for obtain take the fixing collar waterproof and drain measure the first limit water ballast(ing),
It takes the second limit water ballast(ing) of the preliminary bracing waterproof and drain measure and takes the of the secondary lining waterproof and drain measure
Three limit water ballast(ing)s；
Second judgment unit allows to arrange for judging whether the second tunnel structure water percolating capacity is greater than the seabed tunnel
Water obtains the second judging result；
Third judging unit, if being expressed as the second tunnel structure water percolating capacity greater than institute for second judging result
Stating seabed tunnel allows displacement, judges whether second water ballast(ing) is less than second limit water ballast(ing), obtains third and sentence
Disconnected result；
4th judging unit, if being expressed as second water ballast(ing) less than second pole for the third judging result
It restricts water supply load, judges whether the third water ballast(ing) is less than third limit water ballast(ing), obtain the 4th judging result；
First active control type guarded drainage System Design unit, if being expressed as the third for the 4th judging result
Water ballast(ing) is less than third limit water ballast(ing), and determination uses the preliminary bracing waterproof and drain measure for active control type guarded drainage body
System；
5th judging unit is not more than if being expressed as the second tunnel structure water percolating capacity for second judging result
The seabed tunnel allows displacement, judges whether the third tunnel structure water percolating capacity is greater than the seabed tunnel and allows to drain
Amount, obtains the 5th judging result；
Second active control type guarded drainage System Design unit, if being expressed as the third for the 5th judging result
Tunnel structure water percolating capacity, which is greater than the seabed tunnel, allows displacement, determines and uses the secondary lining waterproof and drain measure for actively
Control formula guarded drainage system.
The specific embodiment provided according to the present invention, the invention discloses following technical effects: the invention proposes one kind
Seabed tunnel active control type guarded drainage System Design method and system, it is true based on seabed tunnel structure water percolating capacity and water ballast(ing)
Determine seabed tunnel active control type guarded drainage system, seabed tunnel waterproof and water drainage system is designed with intrinsic objective factor, realizes sea
Quantification, the rational Design on Plane of bottom tunnel waterproof and water drainage system determine corresponding water blockoff scheme according to different wall rock conditions, thus
The subjectivity for reducing seabed tunnel waterproof and drainage design improves its science；It can avoid waste simultaneously, eliminate because designing unreasonable make
At safety for tunnel engineering hidden danger.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is seabed tunnel active control type guarded drainage System Design method flow diagram provided by the present invention；
Fig. 2 is waterproof and drain measure water plugging effect comparison diagram provided by the present invention；
Fig. 3 is seabed tunnel waterproof and water drainage system optimization design method flow chart provided by the present invention；
Fig. 4 is seabed tunnel active control type guarded drainage System Design system construction drawing provided by the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of seabed tunnel active control type guarded drainage System Design method and system, can
Improve seabed tunnel guarded drainage effect and Construction of Submarine Tunnel safety.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Fig. 1 is seabed tunnel active control type guarded drainage System Design method flow diagram provided by the present invention, such as Fig. 1 institute
Show, a kind of seabed tunnel active control type guarded drainage System Design method, comprising:
Step 101: obtaining seabed tunnel engineering parameter and seabed tunnel allows displacement；The seabed tunnel engineering ginseng
Number includes seepage field variation range caused by excavating, protolith infiltration coefficient, tunnel center far from sea level distance and equivalent excavation
Radius；The seabed tunnel allows displacement to be with reference to the green letter tunnel of Japan and Norway's seabed tunnel to the rule for allowing displacement
Surely it determines.
Step 102: the original water percolating capacity of tunnel surrounding is determined according to the seabed tunnel engineering parameter.
Step 103: judge whether the original water percolating capacity of the tunnel surrounding is greater than the seabed tunnel and allows displacement, if
It is to execute step 104, if it is not, executing step 106.
Step 104: obtain using tunnel structure water percolating capacity corresponding to multiple and different waterproof and drain measures and calculate it is multiple not
The water ballast(ing) undertaken with waterproof and drain measure；The waterproof and drain measure includes fixing collar waterproof and drain measure, preliminary bracing guarded drainage
Measure and secondary lining waterproof and drain measure；The tunnel structure water percolating capacity includes right using the fixing collar waterproof and drain measure institute
The first tunnel structure water percolating capacity for answering, use the second tunnel structure water percolating capacity corresponding to the preliminary bracing waterproof and drain measure with
And using third tunnel structure water percolating capacity corresponding to secondary lining waterproof and drain measure；The water ballast(ing) includes taking the reinforcing
The first water ballast(ing) of waterproof and drain measure is enclosed, the second water ballast(ing) of the preliminary bracing waterproof and drain measure is taken and takes described two
The third water ballast(ing) of secondary lining cutting waterproof and drain measure；
Step 105: active control type guarded drainage system is determined according to the tunnel structure water percolating capacity and the water ballast(ing).
Step 106: determining that the current waterproof and drain measure of seabed tunnel is active control type guarded drainage system.
Based on above-mentioned seabed tunnel active control type guarded drainage System Design method it is found that main technical schemes of the invention
The following aspects can be divided into:
(1) country rock impermeability is predicted.It is primarily based on the penetration property and fracture connectivity of tunnel surrounding, passes through theoretical formulaWater percolating capacity Q original to tunnel surrounding1It is predicted；Then according to the complexity of water blockoff, in conjunction with phase
Engineering experience is closed, determines that seabed tunnel displacement controls standard [Q4]；Finally the two is compared, if Q1<[Q4], then show
Drainage system is enough the water that will be penetrated into tunnel discharge, without taking additional water blockoff measure；If Q1>[Q4], then show water percolating capacity
It is excessive and can not all be discharged, " controlled drainage " must be carried out, further water ballast(ing) size is predicted at this time, if water ballast(ing) compared with
Small and country rock anti-permeability performance is preferable, then can meet the requirements only with preliminary bracing water blockoff, if original water percolating capacity is very big or water lotus
Carrying is more than preliminary bracing bearing capacity, then needs to combine water blockoff with preliminary bracing using fixing collar.
(2) preliminary bracing optimization design.First by engineering analogy method and in conjunction with related specifications, at the beginning of primarily determining tunnel
Phase supporting scheme, and substitute into this paper formula and the sensibility of each parameter is analyzed, the optimal of preliminary bracing parameter can be obtained
Disaggregation, wherein (preliminary bracing parameter includes preliminary bracing thickness and infiltration coefficient) and based on this to basic water percolating capacity Q2
It is calculated, if Q2>[Q4], show that secondary lining needs to play certain plugging function, it at this time can to preliminary bracing and secondary lining
Limit water ballast(ing) [p2] and [p3] analyzed respectively, and respective suffered practical water ballast(ing) is predicted, respectively to supporting
Structure is verified, if p3<[p3] and p2<[p2], then selected preliminary bracing Rational Parameters, otherwise need to adjust supporting scheme
Inspection calculation is carried out after whole again, until gained optimal solution set meets Q2<[Q4] and p2<[p2] or Q2>[Q4] when p3<[p3] and p2<
[p2], two kinds of conditions meet the one i.e. Reasonable Parameters of preliminary bracing.
(3) water blockoff systematic collaboration designs.It is first using structure water percolating capacity and water ballast(ing) as the evaluation index of synergistic action effect
Water blockoff scheme is tentatively first drafted by correlation engineering experience and with reference to related specifications, and to supporting scheme structure water percolating capacity Q3And
The water ballast(ing) that each water blockoff component is undertaken is calculated, if similarly Q3>[Q4] when secondary lining be unsatisfactory for security requirement and then regard
For inefficient solution, the final water blockoff scheme rejected water percolating capacity and be unsatisfactory for requirement and structural failure compares the supporting of effective scheme
Performance utilization rate selects water plugging effect optimal and the maximum supporting scheme of supporting overall performance utilization rate.
(4) secondary lining safe design.Due to the corrosivity of seawater, tunnel support structure can occur one under long term
Determine the deterioration of degree, and in view of least favorable situation during operation, i.e., when drainage system is completely plugged, structure water percolating capacity can not
Effectively discharge needs secondary lining to play certain plugging function at this time and undertakes additional water ballast(ing) accordingly.Therefore according to sea
Bottom tunnel long-term safety require determine supporting structure system safety coefficient, and to least favorable in long-acting process under the conditions of
The water ballast(ing) that secondary lining is undertaken is predicted, so that it is determined that the seepage-resistant grade of secondary lining, strength and stiffness demand, and according to
This obtains secondary lining Optimum Support scheme.
Seabed tunnel active control type guarded drainage System Design method of the invention is applied as follows in practice:
(1) country rock impermeability is predicted.Certain seabed tunnel overall length about 6.05km, wherein sea area segment length about 4.2km, sea area part
Construction will pass through the subbottom structure deep weathering slot (capsule) of the 4 wide 50~160m communicated with seawater.Sea area deep weathering slot location belongs to
In typical bad geological section, wall rock condition is very poor, and when construction easily occurs to collapse, water inrush accident.Tunnel hair hole excavation width
About 17m, high about 12.5m, maximum excavated section product about 170m2.The original water percolating capacity of country rock is
Wherein, Q1For the original water percolating capacity of tunnel surrounding, R0Cause seepage field variation range, k to excavatesIt is permeated for protolith and is
Number, h0It is tunnel center far from sea level distance, r0For equivalent excavation radius, h3For water head in tunnel.
Comprehensively consider the factors such as the Weathered Trough section water blockoff difficulty and analysis of possibility of water inrush, and with reference to the green letter tunnel of Japan and moves
Prestige seabed tunnel determines that seabed tunnel deep weathering slot section displacement control standard is [Q to the regulation for allowing displacement4]=
2.5m3/ (md), it is known that Q1> [Q4], since country rock anti-permeability performance is very poor, water seepage of tunnel amount only is unable to satisfy by preliminary bracing
It is required that therefore water blockoff must be combined using fixing collar and preliminary bracing.
(2) water blockoff systematic collaboration designs.Using engineering analog method, primarily determine that 6 groups of water blockoff system schemas, table 1 are difference
The parameter comparison table of waterproof and drain measure, as shown in table 1, wherein preliminary bracing concrete rank is C25, and infiltration coefficient is then by resisting
Grade is seeped to be determined.
Table 1
Water seepage of tunnel amount expression formula is
Wherein, kgFor fixing collar infiltration coefficient, k1For preliminary bracing infiltration coefficient, k2For secondary lining infiltration coefficient, rgFor
Grouting reinforced region outer diameter, r1For preliminary bracing outer diameter, r2For secondary lining outer diameter.
Fixing collar, preliminary bracing and the undertaken water ballast(ing) size of secondary lining are respectively
Wherein, p1、p2、p3Respectively fixing collar waterproof and drain measure, preliminary bracing waterproof and drain measure and secondary lining guarded drainage
The water ballast(ing) that measure undertakes, hg、h1、h2For fixing collar waterproof and drain measure, preliminary bracing waterproof and drain measure and secondary lining guarded drainage
Measure undertakes head, γwFor density of sea water.
Each scheme tunnel structure water percolating capacity and water ballast(ing) are calculated respectively according to formula (2)-(5), Fig. 2 is the present invention
There is provided waterproof and drain measure water plugging effect comparison diagram, as shown in Figure 2.As it can be seen that for scheme 3 and scheme 6, calculated structure infiltration
Measure Q3> [Q4], this just means that secondary lining needs passively to undertake certain water ballast(ing), as long as but being not to think Q3> [Q4]
I.e. dangerous, since F1 Weathered Trough section wall rock condition is very poor, secondary lining country rock design load is larger, answers in structure design
Water ballast(ing) size is reduced as far as possible, thinks that secondary lining does not undertake water ballast(ing) to be partial to security consideration, therefore by above-mentioned 2 schemes
It is rejected.
For other schemes, fixing collar water ballast(ing) is of substantially equal, is 0.6MPa or so, due to preliminary bracing water ballast(ing) p2
Relative to p1It is smaller, therefore, the evaluation of fixing collar safety approximate can be calculated using following formula
Wherein, σciFor the uniaxial compressive strength of intact rock；S and a is material parameter, and expression formula is as follows
The uniaxial compressive strength of consolidating crack is σc=σcisa (8)
Know that reinforcing body intensity need to only reach 1.76MPa and can meet the requirements, and measured data shows seabed tunnel F1
Using after combined casting in deep weathering slot construction, reinforcing body intensity reaches 15MPa or more, and fixing collar safety is ensured, and
With larger degree more than needed.Therefore water blockoff systematic collaboration degree depends primarily on the water ballast(ing) size that preliminary bracing is undertaken, it is clear that side
It is only 0.02MPa that preliminary bracing, which undertakes water ballast(ing) minimum, in case 2, substitutes into formula (9) and knows that preliminary bracing safety is met the requirements.
In formula, c is each component cohesive force of preliminary bracing,For internal friction angle.
In formula, σcpFor each construction material uniaxial compressive strength of preliminary bracing；σtpIt is anti-for each construction material single shaft of preliminary bracing
Tensile strength.
In addition, should be taken into account its complexity realized in selection water blockoff scheme fashion, according to field experience it is found that reinforcing
Circle infiltration coefficient reaches 2.5 × 10-6m/s and is easier to realize, and preliminary bracing infiltration coefficient will reach 2 × 10-6m/s and only need to select
The gunite concrete that impervious rank is P4 can reach.In summary it analyzes, it may be determined that the optimal water blockoff scheme of the Weathered Trough section is
Scheme 2.
(3) secondary lining safe design
Safety stock of the secondary liner structure as tunnel water blockoff should also have to meet tunnel long durability requirement
There is certain water blockoff ability, therefore since the deterioration of country rock and preliminary bracing structure will also undertake centainly during long-term operation
Water ballast(ing).
Secondary lining is considered as thick cyclinder, ultimate bearing capacity may be expressed as:
Wherein, σcsFor the uniaxial compressive strength of concrete, t2For secondary lining thickness.
Then secondary lining safety stock coefficient FS is represented by
A large amount of engineering practices show that over time water percolating capacity has the trend being gradually reduced, and considers tunnel
The least favorable situation being on active service in the period, i.e., it is 0.61MPa that secondary lining, which undertakes total head load, when drainage system is completely plugged, often
It is C30 with secondary lining concrete grade, then substitutes into formula (11) secondary lining thickness can be obtained and be no less than 30cm, it is contemplated that stratum
The development law of load, taking secondary lining thickness is 40cm.In summary analysis can obtain the seabed tunnel Weathered Trough section water blockoff system
System scheme proposals, table 2 are that seabed tunnel Weathered Trough water blockoff system schema provided by the present invention suggests table, as shown in table 2.
Table 2
Based on the application of active control type guarded drainage System Design method provided by the present invention, Fig. 3 is mentioned by the present invention
The seabed tunnel waterproof and water drainage system optimization design method flow chart of confession, as shown in Figure 3.
Fig. 4 is seabed tunnel active control type guarded drainage System Design system construction drawing provided by the present invention, such as Fig. 4 institute
Show, a kind of seabed tunnel active control type guarded drainage System Design system, comprising:
Parameter acquisition module 401 allows displacement for obtaining seabed tunnel engineering parameter and seabed tunnel；The sea
Bottom Tunnel Engineering parameter includes seepage field variation range, protolith infiltration coefficient, tunnel center caused by excavating far from sea level distance
And equivalent excavation radius；The seabed tunnel allows displacement to be with reference to the green letter tunnel of Japan and Norway's seabed tunnel to fair
Perhaps the regulation of displacement is determining.
The original water percolating capacity determining module 402 of tunnel surrounding, for determining that tunnel encloses according to the seabed tunnel engineering parameter
The original water percolating capacity of rock.
The original water percolating capacity determining module 402 of tunnel surrounding specifically includes: the original water percolating capacity determination unit of tunnel surrounding,
For according to formulaDetermine the original water percolating capacity of tunnel surrounding；Wherein, Q1For the original infiltration of tunnel surrounding
Amount, R0Cause seepage field variation range, k to excavatesFor protolith infiltration coefficient, h0It is tunnel center far from sea level distance, r0For etc.
Effect excavates radius, h3For water head in tunnel.
First judgment module 403 permits for judging whether the original water percolating capacity of the tunnel surrounding is greater than the seabed tunnel
Perhaps displacement obtains the first judging result.
Tunnel structure water percolating capacity and water ballast(ing) determining module 404, if being expressed as first judging result described
The original water percolating capacity of tunnel surrounding, which is greater than the seabed tunnel, allows displacement, obtains using corresponding to multiple and different waterproof and drain measures
Tunnel structure water percolating capacity and calculate the water ballast(ing) that multiple and different waterproof and drain measures are undertaken；The waterproof and drain measure includes reinforcing
Enclose waterproof and drain measure, preliminary bracing waterproof and drain measure and secondary lining waterproof and drain measure；The tunnel structure water percolating capacity includes
Using the first tunnel structure water percolating capacity corresponding to the fixing collar waterproof and drain measure, using the preliminary bracing waterproof and drain measure
Third tunnel structure infiltration corresponding to corresponding the second tunnel structure water percolating capacity and use secondary lining waterproof and drain measure
Amount；The water ballast(ing) includes the first water ballast(ing) for taking the fixing collar waterproof and drain measure, takes the preliminary bracing guarded drainage
Second water ballast(ing) of measure and the third water ballast(ing) for taking the secondary lining waterproof and drain measure.
The tunnel structure water percolating capacity and water ballast(ing) determining module 404 specifically include:
First water ballast(ing) determination unit, for according to formulaIt determines and takes the fixing collar anti-
First water ballast(ing) of drainage measure；
Second water ballast(ing) determination unit, for according to formulaThe initial stage is taken in determination
Second water ballast(ing) of supporting waterproof and drain measure；
Third water ballast(ing) determination unit, for according to formulaDetermination is taken described secondary
The third water ballast(ing) of lining cutting waterproof and drain measure；Wherein, p1For the first water ballast(ing)；p2For the second water ballast(ing)；p3For third water ballast(ing)；
hgTo undertake head using the fixing collar waterproof and drain measure；h1To undertake water using the preliminary bracing waterproof and drain measure
Head；h2To undertake head using the secondary lining waterproof and drain measure；γwFor density of sea water.
Active control type guarded drainage System Design module 405, for according to the tunnel structure water percolating capacity and the water
Load determines active control type guarded drainage system.
The active control type guarded drainage System Design module 405 specifically includes:
Limit water ballast(ing) acquiring unit, for obtain take the fixing collar waterproof and drain measure the first limit water ballast(ing),
It takes the second limit water ballast(ing) of the preliminary bracing waterproof and drain measure and takes the of the secondary lining waterproof and drain measure
Three limit water ballast(ing)s；
Second judgment unit allows to arrange for judging whether the second tunnel structure water percolating capacity is greater than the seabed tunnel
Water obtains the second judging result；
Third judging unit, if being expressed as the second tunnel structure water percolating capacity greater than institute for second judging result
Stating seabed tunnel allows displacement, judges whether second water ballast(ing) is less than second limit water ballast(ing), obtains third and sentence
Disconnected result；
4th judging unit, if being expressed as second water ballast(ing) less than second pole for the third judging result
It restricts water supply load, judges whether the third water ballast(ing) is less than third limit water ballast(ing), obtain the 4th judging result；
First active control type guarded drainage System Design unit, if being expressed as the third for the 4th judging result
Water ballast(ing) is less than third limit water ballast(ing), and determination uses the preliminary bracing waterproof and drain measure for active control type guarded drainage body
System；
5th judging unit is not more than if being expressed as the second tunnel structure water percolating capacity for second judging result
The seabed tunnel allows displacement, judges whether the third tunnel structure water percolating capacity is greater than the seabed tunnel and allows to drain
Amount, obtains the 5th judging result；
Second active control type guarded drainage System Design unit, if being expressed as the third for the 5th judging result
Tunnel structure water percolating capacity, which is greater than the seabed tunnel, allows displacement, determines and uses the secondary lining waterproof and drain measure for actively
Control formula guarded drainage system.
Seabed tunnel active control type guarded drainage System Design method and system provided by the present invention, creativeness propose
Using the seabed tunnel waterproof and drainage design scheme of fixing collar and preliminary bracing water blockoff, and give the calculating of water percolating capacity and water ballast(ing)
Method is easy to be designed personnel's understanding and receive, strong operability, it is contemplated that the impervious otherness of different surrounding rock condition calculates
As a result more preferable with actual conditions consistency, while can realize the synergistic effect evaluation of seabed tunnel guarded drainage system, it gives full play to
The anti-permeability performance of supporting construction improves the science and economy of seabed tunnel waterproof and drainage design.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For system disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, foundation
Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (6)
1. a kind of seabed tunnel active control type guarded drainage System Design method characterized by comprising
Obtaining seabed tunnel engineering parameter and seabed tunnel allows displacement；The seabed tunnel engineering parameter includes excavating to draw
Rise seepage field variation range, protolith infiltration coefficient, tunnel center far from sea level distance and equivalent excavation radius；The seabed
Tunnel allows displacement to be to determine with reference to the green letter tunnel of Japan and Norway's seabed tunnel to the regulation for allowing displacement；
The original water percolating capacity of tunnel surrounding is determined according to the seabed tunnel engineering parameter；
Judge whether the original water percolating capacity of the tunnel surrounding is greater than the seabed tunnel and allows displacement, obtains the first judgement knot
Fruit；
If first judging result, which is expressed as the original water percolating capacity of the tunnel surrounding, allows displacement greater than the seabed tunnel,
It obtains to use tunnel structure water percolating capacity corresponding to multiple and different waterproof and drain measures and calculate multiple and different waterproof and drain measures and be held
The water ballast(ing) of load；The waterproof and drain measure includes fixing collar waterproof and drain measure, preliminary bracing waterproof and drain measure and secondary lining
Waterproof and drain measure；The tunnel structure water percolating capacity includes using the first tunnel structure corresponding to the fixing collar waterproof and drain measure
Water percolating capacity is prevented using the second tunnel structure water percolating capacity corresponding to the preliminary bracing waterproof and drain measure and using secondary lining
Third tunnel structure water percolating capacity corresponding to drainage measure；The water ballast(ing) includes take the fixing collar waterproof and drain measure
One water ballast(ing), the second water ballast(ing) for taking the preliminary bracing waterproof and drain measure and take the secondary lining waterproof and drain measure
Third water ballast(ing)；
Active control type guarded drainage system is determined according to the tunnel structure water percolating capacity and the water ballast(ing)；
It is described that active control type guarded drainage system is determined according to the tunnel structure water percolating capacity and the water ballast(ing), it is specific to wrap
It includes:
It obtains and takes the first limit water ballast(ing) of the fixing collar waterproof and drain measure, takes the preliminary bracing waterproof and drain measure
Second limit water ballast(ing) and the third limit water ballast(ing) for taking the secondary lining waterproof and drain measure；
Judge whether the second tunnel structure water percolating capacity is greater than the seabed tunnel and allows displacement, obtains the second judgement knot
Fruit；
If second judging result, which is expressed as the second tunnel structure water percolating capacity, allows displacement greater than the seabed tunnel,
Judge whether second water ballast(ing) is less than second limit water ballast(ing), obtains third judging result；
If the third judging result is expressed as second water ballast(ing) less than second limit water ballast(ing), the third is judged
Whether water ballast(ing) is less than third limit water ballast(ing), obtains the 4th judging result；
If the 4th judging result is expressed as the third water ballast(ing) less than third limit water ballast(ing), determines and use the initial stage
Supporting waterproof and drain measure is active control type guarded drainage system；
If second judging result is expressed as the second tunnel structure water percolating capacity to be allowed to drain no more than the seabed tunnel
Amount, judges whether the third tunnel structure water percolating capacity is greater than the seabed tunnel and allows displacement, obtains the 5th judging result；
If the 5th judging result, which is expressed as the third tunnel structure water percolating capacity, allows displacement greater than the seabed tunnel,
Determination uses the secondary lining waterproof and drain measure for active control type guarded drainage system.
2. seabed tunnel active control type guarded drainage System Design method according to claim 1, which is characterized in that described
The original water percolating capacity of tunnel surrounding is determined according to the seabed tunnel engineering parameter, is specifically included:
According to formulaDetermine the original water percolating capacity of tunnel surrounding；Wherein, Q1For the original infiltration of tunnel surrounding
Amount, R0Cause seepage field variation range, k to excavatesFor protolith infiltration coefficient, h0It is tunnel center far from sea level distance, r0For etc.
Effect excavates radius, h3For water head in tunnel.
3. seabed tunnel active control type guarded drainage System Design method according to claim 2, which is characterized in that the meter
The water ballast(ing) that multiple and different waterproof and drain measures are undertaken is calculated, is specifically included:
According to formulaDetermination is taken
First water ballast(ing) of the fixing collar waterproof and drain measure；
According to formulaIt determines
Take the second water ballast(ing) of the preliminary bracing waterproof and drain measure；
According to formulaIt determines
Take the third water ballast(ing) of the secondary lining waterproof and drain measure；Wherein, p1For the first water ballast(ing)；p2For the second water ballast(ing)；p3For
Third water ballast(ing)；hgTo undertake head using the fixing collar waterproof and drain measure；h1To be arranged using the preliminary bracing guarded drainage
That applies undertakes head；h2To undertake head using the secondary lining waterproof and drain measure；γwFor density of sea water；kgFor fixing collar
Infiltration coefficient, k1For preliminary bracing infiltration coefficient, k2For secondary lining infiltration coefficient, rgFor grouting reinforced region outer diameter, r1For initial stage
Supporting outer diameter, r2For secondary lining outer diameter.
4. a kind of seabed tunnel active control type guarded drainage System Design system characterized by comprising
Parameter acquisition module allows displacement for obtaining seabed tunnel engineering parameter and seabed tunnel；The seabed tunnel
Engineering parameter includes seepage field variation range caused by excavating, protolith infiltration coefficient, tunnel center far from sea level distance and waits
Effect excavates radius；The seabed tunnel allows displacement to be with reference to the green letter tunnel of Japan and Norway's seabed tunnel to allowing to drain
The regulation determination of amount；
The original water percolating capacity determining module of tunnel surrounding, for determining the original infiltration of tunnel surrounding according to the seabed tunnel engineering parameter
Water；
First judgment module allows to drain for judging whether the original water percolating capacity of the tunnel surrounding is greater than the seabed tunnel
Amount, obtains the first judging result；
Tunnel structure water percolating capacity and water ballast(ing) determining module, if being expressed as the tunnel surrounding for first judging result
Original water percolating capacity, which is greater than the seabed tunnel, allows displacement, obtains using tunnel knot corresponding to multiple and different waterproof and drain measures
Structure water percolating capacity simultaneously calculates the water ballast(ing) that multiple and different waterproof and drain measures are undertaken；The waterproof and drain measure includes fixing collar guarded drainage
Measure, preliminary bracing waterproof and drain measure and secondary lining waterproof and drain measure；The tunnel structure water percolating capacity includes described in use
First tunnel structure water percolating capacity corresponding to fixing collar waterproof and drain measure, using corresponding to the preliminary bracing waterproof and drain measure
Third tunnel structure water percolating capacity corresponding to second tunnel structure water percolating capacity and use secondary lining waterproof and drain measure；The water
Load includes the first water ballast(ing) for taking the fixing collar waterproof and drain measure, takes the second of the preliminary bracing waterproof and drain measure
Water ballast(ing) and the third water ballast(ing) for taking the secondary lining waterproof and drain measure；
Active control type guarded drainage System Design module, for being determined according to the tunnel structure water percolating capacity and the water ballast(ing)
Active control type guarded drainage system；
The active control type guarded drainage System Design module specifically includes:
Limit water ballast(ing) acquiring unit is taken the first limit water ballast(ing) of the fixing collar waterproof and drain measure, is taken for obtaining
Second limit water ballast(ing) of the preliminary bracing waterproof and drain measure and the third pole for taking the secondary lining waterproof and drain measure
It restricts water supply load；
Second judgment unit allows to drain for judging whether the second tunnel structure water percolating capacity is greater than the seabed tunnel
Amount, obtains the second judging result；
Third judging unit, if being expressed as the second tunnel structure water percolating capacity greater than the sea for second judging result
Bottom tunnel allows displacement, judges whether second water ballast(ing) is less than second limit water ballast(ing), obtains third judgement knot
Fruit；
4th judging unit, if being expressed as second water ballast(ing) less than second limit water for the third judging result
Load, judges whether the third water ballast(ing) is less than third limit water ballast(ing), obtains the 4th judging result；
First active control type guarded drainage System Design unit, if being expressed as the third water lotus for the 4th judging result
It carries and is less than third limit water ballast(ing), determination uses the preliminary bracing waterproof and drain measure for best waterproof and drain measure；
5th judging unit, if being expressed as the second tunnel structure water percolating capacity no more than described for second judging result
Seabed tunnel allows displacement, judges whether the third tunnel structure water percolating capacity is greater than the seabed tunnel and allows displacement,
Obtain the 5th judging result；
Second active control type guarded drainage System Design unit, if being expressed as the third tunnel for the 5th judging result
Structure water percolating capacity, which is greater than the seabed tunnel, allows displacement, determines and uses the secondary lining waterproof and drain measure for best anti-row
Water measure.
5. seabed tunnel active control type guarded drainage System Design system according to claim 4, which is characterized in that the tunnel
Country rock original water percolating capacity determining module in road specifically includes:
The original water percolating capacity determination unit of tunnel surrounding, for according to formulaDetermine that tunnel surrounding is original
Water percolating capacity；Wherein, Q1For the original water percolating capacity of tunnel surrounding, R0Cause seepage field variation range, k to excavatesIt is permeated for protolith and is
Number, h0It is tunnel center far from sea level distance, r0For equivalent excavation radius, h3For water head in tunnel.
6. seabed tunnel active control type guarded drainage System Design system according to claim 5, which is characterized in that the tunnel
Road structure water percolating capacity and water ballast(ing) determining module specifically include:
First water ballast(ing) determination unit, for according to formulaIt determines and takes the fixing collar anti-
First water ballast(ing) of drainage measure；
Second water ballast(ing) determination unit, for according to formulaThe initial stage is taken in determination
Second water ballast(ing) of supporting waterproof and drain measure；
Third water ballast(ing) determination unit, for according to formulaDetermination is taken described secondary
The third water ballast(ing) of lining cutting waterproof and drain measure；Wherein, p1For the first water ballast(ing)；p2For the second water ballast(ing)；p3For third water ballast(ing)；
hgTo undertake head using the fixing collar waterproof and drain measure；h1To undertake water using the preliminary bracing waterproof and drain measure
Head；h2To undertake head using the secondary lining waterproof and drain measure；γwFor density of sea water；kgFor fixing collar infiltration coefficient,
k1For preliminary bracing infiltration coefficient, k2For secondary lining infiltration coefficient, rgFor grouting reinforced region outer diameter, r1For preliminary bracing outer diameter,
r2For secondary lining outer diameter.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810845980.3A CN109026144B (en) | 2018-07-27 | 2018-07-27 | A kind of seabed tunnel active control type guarded drainage System Design method and system |
| EP19188578.9A EP3599343A1 (en) | 2018-07-27 | 2019-07-26 | Design method and system for active control type waterproof and drainage system of subsea tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810845980.3A CN109026144B (en) | 2018-07-27 | 2018-07-27 | A kind of seabed tunnel active control type guarded drainage System Design method and system |
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| CN109026144B true CN109026144B (en) | 2019-07-05 |
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| CN111119992B (en) * | 2020-02-25 | 2021-01-29 | 中煤科工集团西安研究院有限公司 | Method for determining drilling parameters of drainage water of coal seam roof |
| CN112883529B (en) * | 2021-03-29 | 2023-08-29 | 北京市水利规划设计研究院 | Method for predicting leakage amount of underground pipe gallery |
| CN117171863B (en) * | 2023-11-02 | 2024-02-13 | 长江勘测规划设计研究有限责任公司 | Design method of variable-diameter type water delivery tunnel for reducing large deformation of soft rock |
| CN117421815B (en) * | 2023-12-18 | 2024-03-12 | 长江水利委员会长江科学院 | Tunnel drain hole quantitative design system, terminal and storage medium |
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| CN102628372B (en) * | 2012-04-16 | 2014-07-30 | 中南大学 | Method for determining minimum buried depth of underground tunnel based on engineering control measures |
| CN103089275B (en) * | 2013-01-16 | 2013-12-04 | 山东大学 | Control method of surrounding rocks in water-rich very-broken surrounding rock tunnel collapse sections |
| CN103541762B (en) * | 2013-10-30 | 2015-08-05 | 西安建筑科技大学 | A kind of High aititude severe cold rich water tunnel faces the antifreeze water discharge method of combination forever |
| CN106046521B (en) * | 2016-04-14 | 2019-01-25 | 中国铁道科学研究院铁道建筑研究所 | A kind of splash guard, drain bar or drainable waterproofing plate and preparation method thereof |
| CN106194255B (en) * | 2016-08-31 | 2017-11-03 | 东南大学 | Tunnel waterproof and water drainage system and its method of construction |
| CN206220970U (en) * | 2016-11-01 | 2017-06-06 | 中铁第一勘察设计院集团有限公司 | A kind of high-ground stress Support System in Soft Rock Tunnels supporting construction |
| CN207093138U (en) * | 2017-07-07 | 2018-03-13 | 中铁第四勘察设计院集团有限公司 | A kind of Tunnel Second Lining water pressure control structure |
| CN107229812B (en) * | 2017-07-31 | 2020-08-28 | 中国水利水电第七工程局成都水电建设工程有限公司 | Method for calculating water pressure of lining of high-water-pressure karst tunnel |
| CN107806350B (en) * | 2017-09-28 | 2019-08-13 | 中南大学 | A kind of submerged tunnel the minimum depth determines method |
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| EP3599343A1 (en) | 2020-01-29 |
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Inventor after: Zhang Dingli Inventor after: Sun Zhenyu Inventor after: Fang Dongping Inventor before: Zhang Dingli Inventor before: Sun Zhenyu |