CN105545322B - For controlling the safeguard structure and support system and method that tunnel wall rock deformation destroys - Google Patents
For controlling the safeguard structure and support system and method that tunnel wall rock deformation destroys Download PDFInfo
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- CN105545322B CN105545322B CN201610107696.7A CN201610107696A CN105545322B CN 105545322 B CN105545322 B CN 105545322B CN 201610107696 A CN201610107696 A CN 201610107696A CN 105545322 B CN105545322 B CN 105545322B
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- 239000011435 rock Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000003825 pressing Methods 0.000 claims abstract description 43
- 238000010276 construction Methods 0.000 claims abstract description 35
- 238000013016 damping Methods 0.000 claims abstract description 31
- 239000002689 soil Substances 0.000 claims abstract description 21
- 230000006378 damage Effects 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 46
- 239000010959 steel Substances 0.000 claims description 46
- 230000008093 supporting effect Effects 0.000 claims description 17
- 238000009412 basement excavation Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 7
- 238000004062 sedimentation Methods 0.000 claims description 6
- 239000004567 concrete Substances 0.000 claims description 3
- 230000005641 tunneling Effects 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 claims description 2
- 239000011378 shotcrete Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000003014 reinforcing effect Effects 0.000 description 7
- 101150097977 arch-1 gene Proteins 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 240000009087 Crescentia cujete Species 0.000 description 1
- 235000005983 Crescentia cujete Nutrition 0.000 description 1
- 235000009797 Lagenaria vulgaris Nutrition 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
- E21D11/22—Clamps or other yieldable means for interconnecting adjacent arch members either rigidly, or allowing arch member parts to slide when subjected to excessive pressure
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses the safeguard structures and support system and method for controlling tunnel wall rock deformation destruction, safeguard structure includes two pressing plates for being spaced set distance setting, damping device is fixed between two pressing plates, damping device and two pressing plates are fixed as one structure, the structure is set between two sections of tunnel surrounding support systems and two pressing plates are connect with one section of tunnel surrounding support system respectively, the pressing plate that the present invention passes through upper layer rigidity, middle layer air bag flexible and spring, the setting of the pressing plate of lower layer's rigidity, realize the support system of rigid flexible system, it meets in non cohesire soil, it is upper soft lower hard, the security needs of tunnel construction under the soft and fracture geological conditions such as rich water weakness and swell-shrink characteristic soil property；Support system can not only reduce the soil pressure covered on tunnel tunnel face, reduces vault and ground settlement and improve self, reduce construction cost and difficulty, and construction technology is simply easy to construction personnel's operation, improves work efficiency.
Description
Technical field
The present invention relates to Geotechnical Engineering fields, in particular to for controlling the safeguard structure of tunnel wall rock deformation destruction
And support system and method.
Background technique
Tunnel is built under the soft and fracture geological conditions such as non cohesire soil, upper soft lower hard, rich water weakness and swell-shrink characteristic soil property
Engineering will be to Tunnel Engineering construction and its peripheral ring if the deformation and stability at tunnel surrounding initial stage cannot be efficiently controlled
Extremely disadvantageous influence is caused in border, and serious person leads to tunnel surrounding unstable failure, jeopardizes the orderly of worker's inherently safe and construction
It carries out.The weak brokens geologic area tunnel surroundings such as non cohesire soil, upper soft lower hard, rich water weakness and swell-shrink characteristic soil property have deformation
Amount is big, deformation velocity is fast, deformation rule is variable, the features such as being affected by natural environment around and man-made environment factor, tunnel
Existing Tunnel structure in engineering is become by the structure controls country rock such as conventional slip casting or increase temporary steel support
Shape, it is to be improved for the applicability of the surrouding rock deformation rule of Special complex geologic area, on the one hand, these methods can only play
Interim effect, it is smaller for the ability of deformation controlling for rock surrounding gateways, it sometimes has to combine using backfill, steel tube shed+surface grouting
Mode improve self and excavate again, this just considerably increases construction cost and risks of construction；On the other hand, it excavates
At initial stage, tunnel surrounding has one, and from the process surely deformed, simple stops surrouding rock deformation by conventional supporting, will cause just branch
Structure stress is excessive, is unfavorable for construction safety, also increases just branch structural budget balance.Conventional supporting construction is unable to satisfy control, and this is multiple
The tunnel wall rock deformation in miscellaneous area is stablized, although such as big arch springing structure can reduce the soil pressure covered on tunnel tunnel face, subtract
Small vault and ground settlement and raising self, but big arch springing structure is unable to satisfy with surrouding rock deformation and freedom
Change, so that the differential settlement of tunnel support structure be caused to deform；Although tunnel support structure may be implemented in grouting and reinforcing
Deformability, but its reinforcing scope is relatively small and action time is shorter, it is limited to improve tunnel surrounding self-stable ability, controls
The effect of ground settlement processed is general, cannot be effectively formed reinforcing scope, so that reliability reduces；And used in grouting and reinforcing
Slurries whether generate physics with the rock soil medium of this area or chemical change is also one of Consideration.
In conclusion for the destruction of control tunnel surrounding self-deformation and its disturbance to existing buildings and surrounding enviroment,
It ensures tunnel construction inherently safe and construction area natural environment, promotes the ability of conventional tunnel preliminary bracing structure, need to grind
Hair is suitable for control tunnel under the soft and fracture geological conditions such as non cohesire soil, upper soft lower hard, rich water weakness and swell-shrink characteristic soil property and encloses
Rock deformation failure and can the new supporting structure of appropriate dilatation be to be highly desirable, there is important theory significance and reality
Application value.
Chinese patent 201010563717.9 discloses a kind of tunnel weak surrounding rock method for protecting support and supporting construction.By applying
Power device applies the prestressing force for simultaneously deviating from first branch steelframe to country rock application simultaneously away from the prestressing force of country rock to first branch steelframe.The party
Method can enable country rock provide active support in time, reduce the release of surrouding rock stress to a certain extent.But prestressed application
Deforming from steady for tunnel excavation initial stage country rock is limited, the self-bearing ability of country rock cannot be made full use of, increase first branch system
Stress is unfavorable for operation phase structure safety.
Summary of the invention
The present invention to solve the above-mentioned problems, proposes the safeguard structure for controlling tunnel wall rock deformation destruction and supporting
System and construction method, the support system can efficiently control non cohesire soil, upper soft lower hard, rich water weakness and swell-shrink characteristic soil property
Tunnel wall rock deformation under equal soft and fracture geological conditions, improves tunnel support structure self stability, saves supporting construction investment
Cost guarantees the orderly progress of constructing tunnel personnel safety and tunnel construction.
Specific technical solution is as follows：
For controlling the safeguard structure of tunnel wall rock deformation destruction, two pressing plates including interval set distance setting, two
It is fixed with damping device between a pressing plate, damping device and two pressing plates are fixed as one structure, which is set to
Between two sections of tunnel surrounding support systems and two pressing plates are connect with one section of tunnel surrounding support system respectively；Two pressing plates are
Steel plate supports sliding up and down for top hold-down by damping device, and when tunnel wall rock deformation is larger, compressing gasbag is to subtract
The deformation of slow supporting construction, controls surrounding rock stability with this.
Further, the damping device includes at least one air bag, and when air bag quantity is multiple, air bag is symmetrical
Setting；Air bag is high strength vibration damping circle or Pear-Shaped air bag.
Further, the damping device further includes the elastic element between two pressing plates, and elastic element rises
To buffer function.
Further, the elastic element is spring, and the two elastic elements of spring are set to the middle part and end of two pressing plates.
Further, the spring is placed on the outside of steel pipe, and the both ends of steel pipe are connected and fixed with a pressing plate respectively.
Further, the deflection of the air bag is less than or equal to 20cm.
For controlling the support system of tunnel wall rock deformation destruction, the arch including being used to support tunnel surrounding, arch packet
Include three sections：Top arch and two sections of step arches, are arranged safeguard structure between adjacent two sections of arches, and safeguard structure includes interval
Two pressing plates of set distance setting, are fixed with damping device, damping device and two pressing plates between two pressing plates
Be fixed as one structure.
Further, the damping device includes at least one air bag, further includes the bullet between two pressing plates
Property element, the safeguard structure be set to support system Liang Ge foot.
Further, the arch is double arched structure disposed in parallel, and arch is steel arch-shelf, is i shaped steel.
The construction method of the safeguard structure, specific step is as follows：
1) tunnel excavation, every circulation carry out supporting construction, and double layer bar and gunite concrete is arranged in tunneling boring；
2) one section of foot's arch is fixed in every circulation two sides of the bottom, and increases the stress surface of foot's arch Yu the lower part soil body
Product；
3) fixed protection structure and the pressing plate of foot's arch and safeguard structure is welded respectively on two foot's arches；
4) top arch is fixedly welded between the top of two safeguard structures.
The working principle of the invention is：The support capacity of tunnel superstructure is improved by the arch of double arched structure, meanwhile,
Improved section-steel support device --- high-strength vibration damping air bag can alleviate initial stage tunnel surrounding vertical deformation it is excessive caused by
A possibility that unfavorable geology disaster occurs；At the same time, rigid pressing plate can gradually improve tunnel from steady, efficiently reduce
Tunnel surrounding deforms for a long time, forms tunnel surrounding stability region under soft and fracture geological condition.The present invention is by high-strength vibration damping calabash
The characteristics of reed shape air bag plastic deformation, is soft for meeting control non cohesire soil, upper soft lower hard, rich water weakness and swell-shrink characteristic soil property etc.
Tunnel excavation initial stage country rock sedimentation and deformation is biggish in nature under weak broken geological conditions.Air bag is incorporated as excavation initial stage country rock
Provide cushion space from steady deformation, make full use of self, avoid just branch structure in country rock from steady stage stress
Excessive problem.It is combined with each other with two pressing plates of rigidity, spring when control tunnel surrounding sedimentation and deformation reaches a certain setting value
Middle part reinforcing bar underthrust, first branch system switch to rigidity, avoid the excessive problem of later period operation process tunnel deformation, guarantee the structure longevity
Life.So as to improve Tunnel Stability, adjoining rock stability reinforcing area is formed.On the one hand, increase the utilization to self, greatly
Just branch system stress is reduced greatly, can not only be reduced the excessive problem of tunnel surrounding, earth's surface initial deformation, be improved tunnel and enclose
Rock self-stable ability, and formed by Rigid Plates Under Compression and reinforce steady and continuous body system, important work is played for tunnel surrounding reinforcing
With ultimately forming multi-functional surrounding rock consolidation region.On the other hand, just branch structural system various pieces are made full use of, with less
Cost obtains better supporting effect, it is possible to reduce first branch structural budget balance；In terms of constructing for support system, construction speed is easy
In grasp, and work progress is simple.
Compared with prior art, the present invention has the following advantages that：
1) support system can be flexibly connected using high-strength vibration damping air bag, can alleviate initial stage tunnel surrounding vertical deformation
A possibility that unfavorable geology disaster caused by excessive occurs, satisfaction freely changes with surrouding rock deformation, to avoid unevenness
The generation of even sedimentation and deformation.
2) addition of air bag can effectively change the design concept of current support structure design " very stiff and demanding ", reduce country rock
From steady branch structural stress first in the process, self is made full use of, to make support system each section that can obtain more preferably
Utilization.
3) when surrouding rock deformation is more than setting value, because the setting of air bag and spring enables top arch gradually to improve
From steady, the effective tunnel surrounding that reduces deforms for a long time in tunnel, forms tunnel surrounding stability region.
4) it by the setting of the pressing plate of upper layer rigidity, middle layer air bag flexible and spring, the pressing plate of lower layer's rigidity, realizes rigid
The support system of soft combination is met in weak brokens geology such as non cohesire soil, upper soft lower hard, rich water weakness and swell-shrink characteristic soil properties
Under the conditions of tunnel construction security needs.
5) by the way that Rigid Plates Under Compression and spring up and down is arranged, it can control first branch system and switch to the flexibility before the rigid support stage
Deflection.Later period tunnel deformation can be effectively controlled, guarantees operation process tunnel structure safety, guarantees structural life-time.
6) by improving support system, improve the utilization efficiency of structure each section.The effective use of structure each section is advantageous
In economizing on resources, reducing cost, meet sustainable development idea.
7) entire support system can not only reduce the soil pressure covered on tunnel tunnel face, reduce vault and ground settlement with
And self is improved, and the purpose of tunnel surrounding pre-reinforcement may be implemented；Construction cost and difficulty is reduced, and
Construction technology is simply easy to construction personnel's operation, improves work efficiency, supporting effect is excellent.
Detailed description of the invention
Fig. 1 is front view of the invention；
Fig. 2 is side view of the invention；
Big arch springing suspension device top view Fig. 3 of the invention；
Big arch springing suspension device side view Fig. 4 of the invention；
Air bag front view Fig. 5 of the invention；
Fig. 6 is air bag top view of the invention；
Wherein, 1, arch；2, upper layer steel plate；3, air bag；4, spring；5, lower layer's steel plate；6, fixing bolt.
Specific embodiment
The invention will be further described with embodiment with reference to the accompanying drawing.
For controlling the safeguard structure of tunnel wall rock deformation destruction, two pressing plates including interval set distance setting, two
It is fixed with damping device between a pressing plate, damping device and two pressing plates are fixed as one structure, which is set to
Between two sections of tunnel surrounding support systems and two pressing plates are connect with one section of tunnel surrounding support system respectively；Two pressing plates are
Steel plate supports sliding up and down for top hold-down by damping device, when tunnel wall rock deformation is larger, compresses bumper and absorbing shock
Device controls surrounding rock stability to slow down the deformation of supporting construction with this.
The damping device includes at least one air bag 3, and when 3 quantity of air bag is multiple, air bag 3 is symmetrical arranged；
Air bag 3 is high strength vibration damping Pear-Shaped air bag, further includes the elastic element between two pressing plates, and elastic element plays buffering
Effect.
As shown in Figure 1-3, for control tunnel wall rock deformation destruction support system, be included in arch 1, upper layer steel plate 2,
Air bag 3, spring 4, lower layer's steel plate 5, fixing bolt 6 form.High intensity is evenly arranged between upper layer steel plate 2 and lower layer's steel plate 5
The air bag 3 of vibration damping Pear-Shaped and the spring 4 worked as a buffer, and be all welded into upper layer steel plate 2 and lower layer's steel plate 5 one it is whole
Body, arch 1 include three sections：Safeguard structure, protection knot is arranged in top arch and two sections of step arches between adjacent two sections of arches
Structure includes the upper layer steel plate 2 and lower layer's steel plate 5 for being spaced set distance setting, is fixed between upper layer steel plate 2 and lower layer's steel plate 5 slow
Rush damping device, damping device and upper layer steel plate 2, lower layer's steel plate 5 are fixed as one structure.
As Figure 4-Figure 6, upper layer steel plate 2 and lower layer's steel plate 5 steel plate big using rigidity, outer dimension be 1000mm ×
500mm, steel plate thickness 100mm；The load-carrying properties of structure can be effectively ensured.
Upper layer steel plate 2 and lower layer's steel plate 5 are set as rectangle, and regular shape, size is consistent, convenient for construction.
The connection of corresponding component is carried out using traditional welding procedure, work progress is simple, and quality is easy to get guarantee.
Using air bag 3, it can effectively slow down the influence of upper layer steel plate load, it is ensured that the stabilization and peace of supporting construction
Entirely.
Use high-strength spring 4 as buffer unit, superstructure can be alleviated and deform the excessive damage to substructure.
Allow 3 compression deformation of air bag to be no more than 20cm, can both guarantee to make in a certain range the supporting construction with
Certain Free Transform occurs for surrouding rock deformation, avoids differential settlement, and can guarantee the stability of tunnel surrounding.
Arch 1 uses I-steel, having a size of depth of section H=200mm, cross-sectional width B=100mm, edge of a wing thickness tf
=11.4mm, web thickness tw=7mm, area of section A=3555mm2, the moment of inertia Ix=23690000mm4, the moment of inertia Iy=
1579000mm4, section modulus Wx=236900mm3；Double arch spacing 300mm.
High strength vibration damping Pear-Shaped air bag 3 isHeight is 260mm, and length direction center of circle spacing is 306mm, wide
Spend bearing circle in the heart away from be 240mm, uniformly with upper layer steel plate 2 and lower layer's steel plate 5 welding.
Spring 4 isHigh-strength spring, height 40mm；There is steel pipe at 4 center of spring therethrough.
Fixing bolt 6 is used to high strength vibration damping Pear-Shaped air bag 3 being fixed on upper layer steel plate 2 and lower layer's steel plate 5.
The construction method in the tunnel comprising tunnel surrounding support system, specific step is as follows：
(1) tunnel excavation
In weak broken area, tunnel excavation generally uses benching tunnelling method to excavate, and country rock explosion uses photoface exploision, excavate into
Ruler is controlled by 0.5m.In digging process, accomplish " digging a Pin, one Pin of branch, one Pin of spray ".
(2) section-steel support
After tunnel excavation, every circulation carries out 1 supporting construction of initial stage arch in time.Section preliminary bracing uses I18 or I22 work
Word arch, longitudinal pitch 0.8m；8@20cmX20cm double layer bar of Ф is arranged in tunneling boring；Spray C25, P6 concrete, thick 30cm.
(3) big arch springing support system
Lower layer's steel plate 5 of the lower part of foot's arch and support system is welded into one, is made in construction, leads initial stage upper
The conduction such as supporting and the top soil body to arch pressure it is constant in the case where, increase foot's arch and lower part earth stress area, from
And reduce pressure, it is finally reached the purpose for reducing sedimentation.It is specific as follows：1 lower part of arch connects upper layer steel plate 2, in upper layer steel
Plate 2 and lower layer's steel plate 5, outer dimension are 1000mm × 500mm, steel plate thickness 100mm；Not only it is evenly arranged 3 He of air bag
Spring 4, and it is welded into an entirety therewith.
(4) inverted arch excavates and two linings are constructed
After the completion of tunnel trunk excavation supporting, inverted arch construction is carried out in time, and close cyclization；Thereafter two linings follow-up in time,
Lining cutting items construction technology and technical indicator must satisfy design or code requirement.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (5)
1. the safeguard structure for controlling tunnel wall rock deformation destruction, which is characterized in that two including interval set distance setting
A pressing plate, is fixed with damping device between two pressing plates, and damping device and two pressing plates are fixed as one structure, should
Structure is set between two sections of tunnel surrounding support systems and two pressing plates are connect with one section of tunnel surrounding support system respectively；
The damping device includes at least one air bag, and when air bag quantity is multiple, air bag is symmetrical arranged；The buffering
Damping device further includes the elastic element between two pressing plates；The elastic element is spring, and spring is set to two pressing plates
Middle part and end；The spring is placed on the outside of steel pipe, and the both ends of steel pipe are connect with pressing plate respectively, and air bag is incorporated as excavating
Initial stage country rock provides cushion space from steady deformation, makes full use of self, avoid just branch structure in country rock from steady
The excessive problem of stage stress be combined with each other with two pressing plates of rigidity, and control tunnel surrounding sedimentation and deformation reaches a certain setting
Steel pipe underthrust, first branch system switch to rigidity in the middle part of spring when value, avoid the excessive problem of later period operation process tunnel deformation, protect
Demonstrate,prove structural life-time.
2. safeguard structure as described in claim 1, which is characterized in that the deflection of the air bag is less than or equal to 20cm.
3. the support system for controlling tunnel wall rock deformation destruction, which is characterized in that the arch including being used to support tunnel surrounding
Frame, arch include three sections：Safeguard structure, protection knot is arranged in top arch and Liang Duan foot arch between adjacent two sections of arches
Structure includes two pressing plates for being spaced set distance setting, is fixed with damping device, damping device between two pressing plates
It is fixed as one structure with two pressing plates；The damping device includes at least one air bag, further includes being set to two pressing plates
Between elastic element, elastic element is spring, and the safeguard structure is set to the Liang Ge foot of support system, and air bag is incorporated as
Excavation initial stage country rock provides cushion space from steady deformation, makes full use of self, avoids first branch structure in country rock
The problem excessive from steady stage stress be combined with each other with two pressing plates of rigidity, and control tunnel surrounding sedimentation and deformation reaches a certain
Steel pipe underthrust in the middle part of spring, first branch system switch to rigidity when setting value, avoid later period operation process tunnel deformation is excessive and ask
Topic guarantees structural life-time.
4. as claimed in claim 3 for controlling the support system of tunnel wall rock deformation destruction, which is characterized in that the arch
For double arched structure disposed in parallel.
5. as claim 3-4 is described in any item for controlling the construction method of the support system of tunnel wall rock deformation destruction,
It is characterized in that, specific step is as follows：
1) tunnel excavation, every circulation carry out supporting construction, and double layer bar and gunite concrete is arranged in tunneling boring；
2) one section of foot's arch is fixed in every circulation two sides of the bottom, and increases the forced area of foot's arch Yu the lower part soil body；
3) fixed protection structure and the pressing plate of foot's arch and safeguard structure is welded respectively on two foot's arches；
4) top arch is fixedly welded between the top of two safeguard structures.
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| DE3014270B1 (en) * | 1980-04-14 | 1981-02-05 | Huta Hegerfeld Ag | Tubbing for the tubbing expansion of a tunnel tube |
| CN102852534A (en) * | 2012-10-18 | 2013-01-02 | 山东大学 | Quantitative yielding node applicable to underground engineering support lagging jack |
| CN103195446A (en) * | 2013-04-19 | 2013-07-10 | 山东科技大学 | Yielding buffer device for floor heave of soft rock roadway and method for constructing yielding buffer device |
| CN203296780U (en) * | 2013-06-07 | 2013-11-20 | 西南交通大学 | Supporting and protecting lining device used for preventing surrounding rock from large deformation in underground cavern construction |
| CN104153792A (en) * | 2014-07-24 | 2014-11-19 | 山东大学 | Energy-absorption yield tunnel support system and method suitable for weak broken wall rock |
| CN104879136A (en) * | 2015-04-17 | 2015-09-02 | 山东大学 | Supporting and protecting system for tunnel penetrating weak and broken formations of karst cave and mounting method of supporting and protecting system |
| CN104948207A (en) * | 2015-05-27 | 2015-09-30 | 山东大学 | Device for improving bearing performance of steel arch of dilative soil large-section tunnel |
| CN205445625U (en) * | 2016-02-26 | 2016-08-10 | 山东大学 | A protective structure and strut system for controlling tunnel country rock deforming and breaking |
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