CN109372515A - A kind of adaptive protective device of Deep Vertical Well pit shaft based on constant resistance and large deformation structure - Google Patents
A kind of adaptive protective device of Deep Vertical Well pit shaft based on constant resistance and large deformation structure Download PDFInfo
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- CN109372515A CN109372515A CN201811386584.5A CN201811386584A CN109372515A CN 109372515 A CN109372515 A CN 109372515A CN 201811386584 A CN201811386584 A CN 201811386584A CN 109372515 A CN109372515 A CN 109372515A
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- 230000001681 protective effect Effects 0.000 title claims abstract description 18
- 230000003044 adaptive effect Effects 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 38
- 239000004519 grease Substances 0.000 claims abstract description 13
- 238000009434 installation Methods 0.000 claims abstract description 5
- 238000010276 construction Methods 0.000 claims description 20
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 17
- 230000008859 change Effects 0.000 claims description 7
- 239000011435 rock Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000005065 mining Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 208000035859 Drug effect increased Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- 239000004576 sand Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007569 slipcasting 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
- E21D5/00—Lining shafts; Linings therefor
- E21D5/01—Lining shafts; Linings therefor using prefabricated lining lowered into a hole filled with liquid or viscous mass
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/012—Use of fluid-tight or anti-friction material on outside of, or between, lining layers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/06—Lining shafts; Linings therefor with iron or steel
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/12—Accessories for making shaft linings, e.g. suspended cradles, shutterings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to a kind of adaptive protective device of Deep Vertical Well pit shaft based on constant resistance and large deformation structure, the device is arranged between the top-down more piece barrel of Deep Vertical Well, which includes: upper module: including circular ring shape top plate, hollow ring external seal cylinder and the constant resistance and large deformation body of rod；Lower module: including sealing drum in circular ring shape base, hollow ring and constant resistance and large deformation sleeve, the interior sealing sleeve is inserted in external seal cylinder；Seal modules: the grease that the wire brush at outer sealing drum and the mutual inserting gap of interior sealing drum is set and is filled in inside wire brush；Constant-resistance body: being mounted on the lower surface of the constant resistance and large deformation body of rod, and lower surface is pressed into contact with constant resistance and large deformation sleeve, and when being pushed by top, constant-resistance body lower surface is pressed into crush bushings, it is made to strut deformation.Compared with prior art, the present invention has many advantages, such as effective protection, good airproof performance, guarantees that Deep Vertical Well shaft structure is safe, flexible for installation, monitoring and warning.
Description
Technical field
The present invention relates to the protection works fields of shaft of vertical well structure, are based on constant resistance and large deformation structure more particularly, to one kind
The adaptive protective device of Deep Vertical Well pit shaft.
Background technique
The non-Mining failure of the shaft of vertical well occurred during mining is a kind of special Mine Geological Disasters, master
Coal mine shaft lining pit shaft is shown as under the conditions of with enough safety pillars, serious change occurs for the part borehole wall of shaft of vertical well
Shape and rupture cause Lifting Convey difficult, and some pit shafts also emit sand, and vertical well with a large amount of water burst while destroying
The non-Mining failure of cylinder has some cycles, i.e., the shaft of vertical well after many improvement repeats afterwards for a period of time in normal use
Deformation failure, therefore the Geological Hazard of the non-Mining failure of shaft of vertical well severely impacts the normal operation in mine, jeopardizes
Production safety.According to the survey, the destruction of shaft of vertical well is mainly due to the bottom near topsoil and horizon d intersection for root
Water-bearing layer dehydration causes topsoil that shaft of vertical well is driven to sink, and pit shaft is generated biggish axis by additional negative friction effect
Pressure finally results in and peeling, crushing or more serious destruction occurs inside pit shaft.Therefore, shaft of vertical well structure is taken centainly
Guard technology, be to reduce even to prevent the key technology content of vertical shaft wellhole from being damaged, not only there is leading technical meaning, more
With great society and economic significance.
Currently, the improvement and prevention to shaft wall fracture mainly have the following aspects.
1) it starts discharging indent.In shaft of vertical well danger position broken grouting water blockoff, waterproof, then this position control quick-fried
It is broken, make release Slot shaping.Compressible PVC board is filled in pressure relief groove finally to adapt to stratum settlement.
2) broken grouting strengthening stratum.Due to the water drainage in mining engineering, so as to cause topsoil consolidation settlement, make to stand
Well shaft is by negative friction.Therefore, soil layer around pit shaft is reinforced, solum settlement can be made to reduce, improve the steady of the borehole wall
It is qualitative.
3) ground surface grouting reinforcement.Under conditions of not influencing shaft of vertical well normal construction, from borehole wall surrounding earth's surface to
Lower slip casting is with strengthening stratum, to reduce the additional vertical stress of vertical.
There are the deficiencies of following several respects for existing safeguard procedures technology:
(1) after pressure relief groove decrement reaches design value, need to start discharging indent again；
(2) control expense is high, long in time limit.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide one kind to be based on the big change of constant-resistance
The adaptive protective device of Deep Vertical Well pit shaft of shape structure.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of adaptive protective device of Deep Vertical Well pit shaft based on constant resistance and large deformation structure, device setting are vertical in deep
Between the top-down more piece barrel of well, which includes:
Upper module: including circular ring shape top plate, top and the top plate welded with embedded bar in upper section shaft of vertical well barrel
It is welded at welding and the hollow ring external seal cylinder that Open Side Down and top and roof center at interior outer rim and cross section is in circle
The constant resistance and large deformation body of rod of annular；
Lower module: including circular ring shape base, bottom and the pedestal welded with embedded bar in lower section shaft of vertical well barrel
Sealing drum and bottom are welded on the constant resistance and large deformation at base center in circular ring shape in welding and the hollow ring of opening upwards
Sleeve, the interior sealing sleeve are inserted in external seal cylinder；
Seal modules: the wire brush at outer sealing drum and the mutual inserting gap of interior sealing drum is set and is filled in wire brush
Internal grease；
Constant-resistance body: being mounted on the lower surface of the constant resistance and large deformation body of rod, and lower surface connects with constant resistance and large deformation sleeve compression
Touching, when being pushed by top, constant-resistance body lower surface is pressed into crush bushings, it is made to strut deformation.
Device quantity encryption setting in the region of rock crusher band, topsoil and the intersection of rock stratum.
The constant resistance and large deformation body of rod is the solid body of rod,
When the constant-resistance body quantity is 1, structure is annular inversed taper platform entity, upper surface and constant resistance and large deformation bar
Body lower surface is affixed, and upper surface width is greater than lower surface width, and lower surface width is less than the opening width of interior sealing drum；
When the constant-resistance body quantity is greater than 1, then respectively along constant resistance and large deformation body of rod lower surface arrangement, structure is ring
Shape rounding frustum entity, the upper surface diameter of constant-resistance body are greater than lower surface diameter, and lower surface diameter is less than the opening of interior sealing drum
Width.
The deformation intensity of the constant-resistance body is greater than constant resistance and large deformation sleeve, guarantees that constant-resistance body presses downward to perseverance when being pressurized
Hinder large deformation sleeve in when, constant resistance and large deformation sleeve deformation occurs and constant-resistance body deformation occurs.
The length of the interior sealing drum is less than the constant resistance and large deformation body of rod.
The seal modules include at least three wire brushes and the grease being filled between wire brush, to waterproof.
In the device normal service stage, when pit shaft is only self-possessed by itself, the active force for making constant-resistance body generate sliding is big
It is self-possessed G in top shaft of vertical well, when the negative friction suffered by the pit shaft of top reaches setting value, constant-resistance body generates sliding, works as top
When negative friction suffered by pit shaft continues to increase, constant-resistance body is completely into constant resistance and large deformation sleeve, constant resistance and large deformation structure at this time
Passing to the lower section vertical active force of shaft of vertical well is N, and when vertical shaft wellhole from being damaged, suffered vertical active force was F, then has G < N < F.
The construction method of the device the following steps are included:
1) before shaft structure construction, the installation position of determining device and the model and constant-resistance of constant resistance and large deformation sleeve are big
Deform the size of the body of rod；
2) before shaft structure construction, wire brush is welded on interior sealing drum.
3) before shaft structure construction, by interior sealing drum, constant resistance and large deformation sleeve weld on pedestal, by external seal cylinder and
The constant resistance and large deformation body of rod is welded on top plate；
4) in shaft structure work progress, embedded bar is welded with pedestal and top plate respectively, forms precast construction mould
Block, including upper module and lower module；
5) grease is filled between interior external seal cylinder, completes construction.
Compared with prior art, the invention has the following advantages that
One, effective protection: the present invention enables shaft of vertical well with the compression of surrounding soil by constant resistance and large deformation structure
Sedimentation generates corresponding deformation, to protect shaft of vertical well.
Two, good airproof performance: the present invention is by setting wire brush and sealing device and grease is filled between sealing device
It can be good at preventing water and soil from entering in device, extend the service life of the present apparatus, function the present apparatus preferably；It seals simultaneously
Device is also the carrier for carrying external Water And Earth Pressures.
Three, flexible for installation: different numbers are arranged according to the bearing capacity of pit shaft and the size of additional negative friction in the present invention
The protective device of amount.
Four, guarantee Deep Vertical Well shaft structure safety: the present invention enables to top vertical by constant resistance and large deformation structure
The active force that pit shaft is transmitted to lower part shaft of vertical well is less than a certain steady state value (the constant-resistance value of constant-resistance body), to can guarantee lower part vertical
The normal use of pit shaft, i.e., when pit shaft is only self-possessed by itself, in order to guarantee that the present apparatus can play its function, in the big change of constant-resistance
The active force that meeting at shape structure makes it generate sliding should be greater than top shaft of vertical well self weight G, the negative frictional resistance suffered by the pit shaft of top
When power reaches certain value f, constant resistance and large deformation structure should be able to generate certain sliding, and the negative friction suffered by the pit shaft of top continues to increase
When big, for constant-resistance body completely into sleeve, it is one that constant resistance and large deformation structure, which passes to the vertical active force of lower part shaft of vertical well, at this time
Steady state value N.Assuming that suffered vertical active force is that F makes G < N < F then when designing the present apparatus when vertical shaft wellhole from being damaged.Present apparatus energy
It is enough adaptively deformed according to the development of negative friction, reduces the influence of negative friction, realize Deep Vertical Well shaft structure
Safety.
Five, monitoring and warning: the load-bearing monitor according to constant-resistance structure can also realize that the monitoring of shaft structure safe condition is pre-
It is alert, the reinforcing of shaft structure is realized when that may destroy, the generation for avoiding shaft structure from destroying, it is ensured that production safety, drop
Low production cost.Therefore, the present apparatus has critically important social and economic significance.
Detailed description of the invention
Fig. 1 is structure of the invention Longitudinal cross section schematic.
Scheming (2a) is cross-sectional view of the present invention, and figure (2b) is the partial enlarged view for scheming the portion A in (2a).
Fig. 3 is the present invention and shaft of vertical well connection schematic diagram.
Fig. 4 is that the present invention is vertically arranged schematic diagram in shaft of vertical well structure.
Fig. 5 is wire brush (grease) detail drawing.
Fig. 6 is to deform schematic diagram when the invention works.
Fig. 7 is another alternative construction form.
Fig. 8 is the sectional view of 4-4 in Fig. 7.
Description of symbols in figure:
11, top plate, 12, external seal cylinder, 13, the constant resistance and large deformation body of rod, 21, bottom plate, 22, interior sealing drum, 23, the big change of constant-resistance
Shape sleeve, 31, wire brush, 32, grease, 41, constant-resistance body.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Disclosed content understands advantages of the present invention and effect easily.The present invention can also pass through in addition different specific embodiment parties
Formula is embodied or practiced, and the various details in this specification may be based on different viewpoints and application, without departing from the present invention
Spirit under carry out various modifications or alterations.
It should be clear that structure depicted in this specification institute accompanying drawings, ratio, size etc. are only to cooperate specification to be taken off in this specification
The content shown is not intended to limit the invention enforceable qualifications so that those skilled in the art understands and reads, therefore
Do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing the present invention
Under the effect of can be generated and the purpose that can reach, it should all still fall in disclosed technology contents and obtain the model that can cover
In enclosing.
Embodiment:
Deep Vertical Well pit shaft adaptive protective device of one of the implementation case based on constant resistance and large deformation structure is such as schemed
Shown in 1, by the way that constant resistance and large deformation device to be fixed on pit shaft by top plate and pedestal, sealing device is welded on top plate and bottom
On seat, wire brush is fixed on interior sealing drum.Perseverance when the born negative friction of pit shaft reaches certain value, in large deformation device
Resistance body overcomes frictional force to generate movement downwards, plays the role of protecting shaft of vertical well to discharge certain negative friction.
The device includes: constant resistance and large deformation device, sealing structure and connection structure.
Sealing structure includes interior sealing drum 21, external seal cylinder 22, wire brush 23 and grease 24.When the device is installed on away from ground
At 100 meters of table, steel plate thickness used is 20mm in sealing device, and thickness of steel product used in inner sleeve is 50mm.
Constant resistance and large deformation device is made of constant resistance and large deformation sleeve 11, the constant resistance and large deformation body of rod 12 and constant-resistance body 13.When this
When device is installed on away from 100 meters of earth's surface, the body of rod and length sleeve are 60cm, and sleeve diameter difference is 160mm, and constant-resistance body lower end is straight
Diameter is 150mm, upper end diameter 200mm, and steel are all made of Q345 steel；When the device is installed on away from ground deeper inside 100m,
The model of each component should be increased according to stress condition according under the requirement for meeting geometric dimension.
Connection structure includes pedestal 31 and top plate 32, which is installed on away from 100 meters of earth's surface, and top plate and pedestal are
50mm, steel are all made of Q345.
As shown in Figure 1, the device is closed adaptive protective device, control lower part vertical well is realized by constant-resistance body
Upper load suffered by cylinder, when the negative friction suffered by the pit shaft reaches certain value, since constant-resistance body overcomes negative friction to moving down
It is dynamic, so that suffered part negative friction is discharged, to protect lower part shaft of vertical well.
As shown in figure (2a) and (2b), which is ring device, is matched with shaft of vertical well size, first: can reach
Maintain the effect of vertical headroom；Second: it can preferably guarantee that the present apparatus can undertake upper load and be unlikely to destroy, the
Three: can effectively undertake horizontally Water And Earth Pressures, prevent pit shaft from generating destruction.
As shown in figure 3, being all welded with reinforcing bar on pedestal and top plate, during shaft mineshaft construction, reinforcing bar is embedded to mixed
In Xtah Crude Clay structure, it is fixed on top plate and pedestal on shaft of vertical well, so that the present apparatus be enable to work normally.Embedded bar should have
Certain length guarantees the connection of the protective device and shaft structure.
As shown in figure 4, what the device should easily deform in country rocks such as rock crusher band, topsoil and the intersections of rock stratum
Region encryption arrangement, is suitably arranged in other regions.
As shown in figure 5, wire brush should be fixed at interior sealing drum in the device, and should be filled out among interior external seal cylinder
It filled with grease, and then can effectively prevent the substances such as water, soil from entering in the present apparatus even shaft of vertical well, influence the present apparatus just
The often normal service of work or vertical
As shown in fig. 6, the device is in the normal service stage, when pit shaft is only self-possessed by itself, in order to guarantee present apparatus energy
Its function can be played, the active force that constant-resistance body can be made to generate sliding at constant resistance and large deformation structure should be greater than top shaft of vertical well
Be self-possessed G, and when the negative friction suffered by the pit shaft of top reaches certain value f, constant resistance and large deformation structure should be able to generate certain sliding, when
When negative friction suffered by the pit shaft of top continues to increase, constant-resistance body is completely into sleeve, and constant resistance and large deformation structure passes at this time
Shaft of vertical well vertical active force in lower part is certain value N.Assuming that suffered vertical active force is F when vertical shaft wellhole from being damaged, then designing
When the present apparatus, G < N < F should be made.
It as shown in Figure 7,8, is a kind of alternative arrangement mode of the device, when the device is arranged in shaft of vertical well Shallow Section
When, the shaft of vertical well self weight undertaken as needed for it is smaller, and negative friction suffered by shaft of vertical well is smaller, therefore can be only by the present apparatus
Round individual is found into, thus reach reduction difficulty of construction, the effect increased economic efficiency.
Deep Vertical Well pit shaft adaptive protective device of one of the present embodiment based on constant resistance and large deformation structure, construction
Steps are as follows:
S1 determines the installation position of the device according to its design parameter before shaft structure construction, and determines the device institute
With constant resistance and large deformation sleeve model and the size of the body of rod.
Wire brush is welded on interior sealing drum before shaft structure construction in factory by S2.
S3, will be outer close in factory by interior sealing drum, constant resistance and large deformation sleeve weld on pedestal before shaft structure construction
Sealed tube and the constant resistance and large deformation body of rod are welded on top plate.
S4 is realized in factory and is welded with pedestal, top plate respectively during shaft construction, by embedded bar, forms structure mould
Block, so as to site operation.Wherein, upper module is made of embedded bar, top plate, external seal cylinder and the constant resistance and large deformation body of rod；Under
Portion's module is made of embedded bar, pedestal, interior sealing drum, wire brush and constant resistance and large deformation sleeve.
S5 fills grease between sealing drum inside and outside the present apparatus.
Negative friction suffered by pit shaft is passed through deformation by the large deformation feature using constant resistance and large deformation structure by the present invention
Release, to reach the feature for guaranteeing shaft wall safety.It is broken that the easy working structural system of this technology appearance is conducive to shaft of vertical well
Bad control not only has leading technical meaning, with more greatly society and economic significance.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (8)
1. a kind of adaptive protective device of Deep Vertical Well pit shaft based on constant resistance and large deformation structure, which is arranged in Deep Vertical Well
Between top-down more piece barrel, which is characterized in that the device includes:
Upper module: including circular ring shape top plate (11), top and the top plate welded with embedded bar in upper section shaft of vertical well barrel
(11) it is welded at welding and the hollow ring external seal cylinder (12) that Open Side Down and top and top plate (11) center at interior outer rim
And cross section is in the constant resistance and large deformation body of rod (13) of circular ring shape；
Lower module: including circular ring shape base (21), bottom and the pedestal welded with embedded bar in lower section shaft of vertical well barrel
(21) it welds and sealing drum (22) and bottom is welded at pedestal (21) center in circular ring shape in the hollow ring of opening upwards
Constant resistance and large deformation sleeve (23), interior sealing drum (22) inserting is in the outer sealing drum (12)；
Seal modules: the wire brush (31) at outer sealing drum (12) and interior sealing drum (22) mutually inserting gap and filling are set
Grease (32) inside wire brush；
Constant-resistance body (41): being mounted on the lower surface of the constant resistance and large deformation body of rod (13), lower surface and constant resistance and large deformation sleeve
(23) it is pressed into contact with, when being pushed by top, constant-resistance body (41) lower surface is pressed into crush bushings (23), it is made to strut change
Shape.
2. a kind of adaptive protective device of Deep Vertical Well pit shaft based on constant resistance and large deformation structure according to claim 1,
It is characterized in that, device quantity encryption setting in the region of rock crusher band, topsoil and the intersection of rock stratum.
3. a kind of adaptive protective device of Deep Vertical Well pit shaft based on constant resistance and large deformation structure according to claim 1,
It is characterized in that, the constant resistance and large deformation body of rod (13) is the solid body of rod,
When constant-resistance body (41) quantity is 1, structure is annular inversed taper platform entity, upper surface and constant resistance and large deformation bar
Body (13) lower surface is affixed, and upper surface width is greater than lower surface width, and lower surface width is less than opening for interior sealing drum (22)
Mouth width degree；
When constant-resistance body (41) quantity is greater than 1, then respectively along the constant resistance and large deformation body of rod (13) lower surface arrangement, structure
For annular rounding frustum entity, the upper surface diameter of constant-resistance body (41) is greater than lower surface diameter, and lower surface diameter is less than interior sealing
The opening width of cylinder (22).
4. a kind of adaptive protective device of Deep Vertical Well pit shaft based on constant resistance and large deformation structure stated according to claim 3,
It is characterized in that, the deformation intensity of the constant-resistance body is greater than constant resistance and large deformation sleeve (23), guarantees the constant-resistance body (41) when being pressurized
Press downward to constant resistance and large deformation sleeve (23) it is interior when, deformation occurs and shape does not occur for constant-resistance body (41) for constant resistance and large deformation sleeve (23)
Become.
5. a kind of adaptive protective device of Deep Vertical Well pit shaft based on constant resistance and large deformation structure according to claim 1,
It is characterized in that, the length of the interior sealing drum (23) is less than the constant resistance and large deformation body of rod (13).
6. a kind of adaptive protective device of Deep Vertical Well pit shaft based on constant resistance and large deformation structure according to claim 1,
It is characterized in that, the seal modules include at least three wire brushes (31) and the grease being filled between wire brush (31)
(32), to waterproof.
7. a kind of adaptive protective device of Deep Vertical Well pit shaft based on constant resistance and large deformation structure according to claim 1,
It is characterized in that, when pit shaft is only self-possessed by itself, constant-resistance body is made to generate the active force of sliding in the device normal service stage
It is self-possessed G greater than top shaft of vertical well, when the negative friction suffered by the pit shaft of top reaches setting value, constant-resistance body generates sliding, when upper
When negative friction suffered by portion's pit shaft continues to increase, constant-resistance body (41) is interior completely into constant resistance and large deformation sleeve (23), at this time constant-resistance
It is N that large deformation structure, which passes to the lower section vertical active force of shaft of vertical well, and when vertical shaft wellhole from being damaged, suffered vertical active force was F, then
There is G < N < F.
8. a kind of Deep Vertical Well pit shaft based on constant resistance and large deformation structure according to claim 1-7 is adaptively prevented
Protection unit, which is characterized in that the construction method of the device the following steps are included:
1) before shaft structure construction, the installation position of determining device and the model and constant-resistance of constant resistance and large deformation sleeve (23) are big
Deform the size of the body of rod (13)；
2) before shaft structure construction, wire brush (31) is welded on interior sealing drum (22).
3) before shaft structure construction, interior sealing drum (22), constant resistance and large deformation sleeve (23) are welded on pedestal (21), it will be outer
Sealing drum (12) and the constant resistance and large deformation body of rod (13) are welded on top plate (11)；
4) in shaft structure work progress, embedded bar is welded with pedestal (21) and top plate (11) respectively, forms prefabricated knot
Structure module, including upper module and lower module；
5) grease (32) are filled between interior external seal cylinder, completes construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811386584.5A CN109372515B (en) | 2018-11-20 | 2018-11-20 | Deep vertical shaft self-adaptive protection device based on constant-resistance large-deformation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811386584.5A CN109372515B (en) | 2018-11-20 | 2018-11-20 | Deep vertical shaft self-adaptive protection device based on constant-resistance large-deformation structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109372515A true CN109372515A (en) | 2019-02-22 |
| CN109372515B CN109372515B (en) | 2024-01-23 |
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ID=65376828
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811386584.5A Active CN109372515B (en) | 2018-11-20 | 2018-11-20 | Deep vertical shaft self-adaptive protection device based on constant-resistance large-deformation structure |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09125866A (en) * | 1995-11-02 | 1997-05-13 | Mitsubishi Heavy Ind Ltd | Floating preventive mechanism of casing tube for shaft |
| JP2002004769A (en) * | 2000-06-22 | 2002-01-09 | Komatsu Ltd | Permeable-pipe laying construction method by pipe jacking method and its cutoff device |
| US20160341000A1 (en) * | 2014-02-11 | 2016-11-24 | Halliburton Energy Services, Inc. | Expansion cone for downhole tool |
| CN206246140U (en) * | 2016-12-06 | 2017-06-13 | 山东科技大学 | A kind of constant-resistance allows pressure assembled bolt |
| CN209129607U (en) * | 2018-11-20 | 2019-07-19 | 同济大学 | A kind of adaptive protective device of Deep Vertical Well pit shaft based on constant resistance and large deformation structure |
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| JPH09125866A (en) * | 1995-11-02 | 1997-05-13 | Mitsubishi Heavy Ind Ltd | Floating preventive mechanism of casing tube for shaft |
| JP2002004769A (en) * | 2000-06-22 | 2002-01-09 | Komatsu Ltd | Permeable-pipe laying construction method by pipe jacking method and its cutoff device |
| US20160341000A1 (en) * | 2014-02-11 | 2016-11-24 | Halliburton Energy Services, Inc. | Expansion cone for downhole tool |
| CN206246140U (en) * | 2016-12-06 | 2017-06-13 | 山东科技大学 | A kind of constant-resistance allows pressure assembled bolt |
| CN209129607U (en) * | 2018-11-20 | 2019-07-19 | 同济大学 | A kind of adaptive protective device of Deep Vertical Well pit shaft based on constant resistance and large deformation structure |
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| Title |
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| 张义勇;王昊昊;计庆辉;殷召元;蒯孝辉;杨耀文;: "恒阻大变形锚索支护***及其工程应用", 煤炭工程, no. 04, pages 30 - 34 * |
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| CN109372515B (en) | 2024-01-23 |
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