CN207749486U - A kind of wedge shape mud-rock flow shunting is blocked device - Google Patents
A kind of wedge shape mud-rock flow shunting is blocked device Download PDFInfo
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- CN207749486U CN207749486U CN201820056677.0U CN201820056677U CN207749486U CN 207749486 U CN207749486 U CN 207749486U CN 201820056677 U CN201820056677 U CN 201820056677U CN 207749486 U CN207749486 U CN 207749486U
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- 239000011435 rock Substances 0.000 title claims abstract description 75
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 59
- 239000010959 steel Substances 0.000 claims abstract description 59
- 230000002787 reinforcement Effects 0.000 claims description 16
- 239000000839 emulsion Substances 0.000 claims description 5
- 230000010485 coping Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 210000003205 muscle Anatomy 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 abstract description 11
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000004044 response Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 16
- 238000004088 simulation Methods 0.000 description 9
- 239000004575 stone Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 230000000116 mitigating effect Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The utility model discloses a kind of wedge-shaped mud-rock flows to shunt device of blocking, which includes arc-shaped barricade and two wing barricades；Arc-shaped barricade is located at the front end of whole device, the symmetrical fixed-wing barricade in both sides；The inside of arc-shaped barricade and the inside of wing barricade are respectively provided with prestressing without bondn system；Prestressing without bondn system includes several vertical un-bonded prestressed steel strand devices, and un-bonded prestressed steel strand device is made of steel strand wires, anchorage and bellows；The bottom of arc-shaped barricade and wing barricade is both provided with sole plate, and uplift pile basis is added under the sole plate with prestressing without bondn system.The present apparatus arranges prestressing without bondn system in the larger place of stress, plays the role of good energy consumption, reduces the dynamic response of whole device.When by mud-rock-flow-impact, the flow direction of mud-rock flow can be changed while ensureing self stability, dissipation impact energy ensures the safety of important building or structures after device.
Description
Technical field
It takes precautions against natural calamities field the utility model is related to mud-rock flow, is particularly suitable for a kind of mud-rock flow shunting of wedge shape and blocks dress
It sets.
Background technology
China be in the world by more serious one of the country of state of debris flow disasters, it is huge caused by mud-stone flow disaster every year
Loss.Therefore, seem particularly urgent and important to the research of mud-stone flow disaster and prevention.In recent years, mankind's activity is frequent, break
It is broken the ecological environment of the Nature, also promotes the generation of mud-rock flow to a certain extent.A kind of important mud-rock flow is taken precautions against natural calamities means
Mud-rock flow blocking dam is exactly built, but mud-rock flow blocking dam at this stage, still there are many disadvantage, traditional blocking dam is all
Front undertakes the impact load of mud-rock flow, this can make the impact load acted on dam body become very big, cause the wave of material
Take.And excessive impact load may destroy blocking dam to cause more serious disaster.
Invention content
The purpose of this utility model is that for the deficiency of mud-rock flow protective device, it is good to provide a kind of stability, can change
The flow direction of mud-rock flow, dissipation impact energy, ensure device after important building safety a kind of wedge shape mud-rock flow shunt block
Blocking means.
The purpose of this utility model is achieved through the following technical solutions：A kind of mud-rock flow shunting of wedge shape is blocked dress
It sets, which includes arc-shaped barricade and two wing barricades；The arc-shaped barricade is located at the front end of whole device, both sides pair
Claim fixed-wing barricade, arc-shaped barricade and two wing barricades are made of armored concrete；The outside of the wing barricade and circular arc
It smoothly transits on the outside of shape barricade；The inside of the arc-shaped barricade and the inside of wing barricade are respectively provided with prestressing without bondn system
System, and (deviate from mud-rock-flow-impact side) on the inside of the two and all have slope；The prestressing without bondn system includes several vertical
Un-bonded prestressed steel strand device, the un-bonded prestressed steel strand device by steel strand wires, fixed steel strand wires anchorage and
The bellows composition being cased on the outside of steel strand wires；The bottom of the arc-shaped barricade and wing barricade is both provided with sole plate, is having
Uplift pile basis is added under the sole plate for having prestressing without bondn system, the uplift pile basis includes uplift pile foundation platform
And uplift pile；The lower end of the steel strand wires is anchored at the inside of uplift pile foundation platform by anchorage, and the upper end of steel strand wires passes through
Anchorage is fixed on gear coping.
Further, several vertical soap-free emulsion polymeizations that the prestressing without bondn system inside the arc-shaped barricade is included
Prestress steel twist line apparatus is distributed in inverted triangle, and the bottom edge of triangle is located at mud-rock-flow-impact side；The top surface of the wing barricade is
Rectangle, several vertical un-bonded prestressed steel strand device cloth that the prestressing without bondn system inside wing barricade is included
It is placed on the outside of the longitudinal central axis line of rectangle top surface, that is, leans on mud-rock-flow-impact side；The prestressing without bondn of preferred arrangement in this way
Steel strand wires device can fully play its dissipation mud-rock-flow-impact energy when bearing mud-rock-flow-impact, and protection is entire
The effect that device does not collapse.
Further, bracing members, bracing members and sole plate and two flank barricades are equipped in inside in the middle part of two flank barricades
Inside is fixedly connected, and the sole plate of two flank barricades is wider, to there is enough spaces to fix bracing members.By Numerical-Mode
Quasi-, when bearing mud-rock-flow-impact, the wing barricade of both sides primarily serves the effect of shunting, passes through the numerical simulation of ANSYS platforms
Analysis, analysis result be shown in wing barricade center mud-rock flow be applied to wing barricade pressure it is maximum, in the middle part of the wing barricade in
Side setting bracing members can improve the stress condition of wing barricade, ensure the stability of wing barricade.
Further, by the numerical simulation analysis of ANSYS platforms, find the angle when two flank barricades (2) be 55 °~
65 °, the central angle of arc-shaped barricade (1) is 115 °~125 °.When bearing mud-rock-flow-impact load, device moves whole device
Force-responsive is minimum, and the effect that device shunts mud-rock flow is preferable.
Further, in the outside of prestressing without bondn system (close to mud-rock-flow-impact side) arrangement bar-mat reinforcement, bar-mat reinforcement
Preceding concrete layer thickness cannot be less than 30mm, and bar-mat reinforcement cannot be less than at a distance from un-bonded prestressed steel strand device
20mm.30mm is cannot be less than with the spacing of placing of reinforcement in bar-mat reinforcement, and is not greater than 100mm.By arranging bar-mat reinforcement, Ke Yijia
The ductility of the outside concrete of strong prestressing without bondn system, the outside concrete for mitigating prestressing without bondn system are bearing mud
Damage when rock glacier impact load, to ensure that prestressing without bondn system can under the action of mud-rock-flow-impact reliable work
Make.
Further, the distance between each un-bonded prestressed steel strand device is not less than 20mm while nor less than 1
Ripple pipe diameter again, to reduce the stress occurred by the overlapping of pretension between each un-bonded prestressed steel strand device
It concentrates.It is not less than 50mm with a distance from vertical horizontal direction of the un-bonded prestressed steel strand device from the surface of barricade vertical direction.It is logical
Cross such arrangement for requiring control un-bonded prestressed steel strand device, it is ensured that device when bearing mud-rock-flow-impact,
Mitigate the influence that the failure of outside concrete plays un-bonded prestressed steel strand system effectiveness.
The beneficial effects of the utility model：The utility model provides a kind of flow direction that can change mud-rock flow, and dissipate impact
Energy, stability is good, can reliably ensure that the wedge-shaped mud-rock flow shunting of the safety of important building after device is blocked device.When this
When device is by mud-rock-flow-impact, circular arc barricade plays a part of shunting in mud-rock flow, and the wing barricade of both sides plays and draws
The effect for leading mud-rock flow movement direction, in numerical simulation, arc-shaped barricade is more preferable compared to right angle barricade stress condition, less
It is easy to happen destruction.It is arc-shaped by the sunykatuib analysis under the type mechanics demonstration platforms such as ANSYS when by mud-rock-flow-impact
Stress at barricade and in the middle part of two flank barricades and deformation are maximum, this is destroyed at two in order to prevent, are provided at two at this
Prestressing without bondn system.Prestressing without bondn system is the un-bonded prestressed steel strand device group by several special arrangements
At.Prestressing without bondn system is set in Gravity Retaining Wall so that barricade is connected with basis by the stress of steel strand wires pre-add
Together, when wall is shifted by impact, prestress wire will its return to initial position, to make wall
It swings so that the time of contact of block stone and wall extends in mud-rock flow, and impact force becomes smaller, to reduce whole device
Dynamic response.The uplift pile basis being arranged under prestressing without bondn system simultaneously provides enough withdrawal resistances for whole device,
Uplift pile basis and prestressing without bondn system collective effect, can anti-locking apparatus be that unstability occurs to fall by mud-rock-flow-impact
It collapses.Mud-rock flow is after shunting, and flow area increases, energy attenuation, to which the present apparatus subtracts while changing mud-rock flow and flowing to
The speed of few mud-rock flow flowing, and then reduce the distance of mud-rock flow sliding.The arrangement of prestressing without bondn device is flat with ANSYS
The numerical simulation result of platform is foundation, and in numerical simulation result, the stress distribution of arc-shaped barricade is that close mud-rock flow side is big,
Principle mud-rock flow side is small, therefore the prestressing without bondn device at arc-shaped barricade is distributed in up-side down triangle.And for both sides
Wing barricade, numerical simulation show that intermediate portion is larger by pressure, have the loading characteristic similar to cantilever beam, i.e., close to mud-rock flow
Lateral retaining wall tension is impacted, is pressurized away from mud-rock-flow-impact lateral retaining wall, therefore it is rectangular that prestressing without bondn device is arranged in barricade
The outside (close to mud-rock-flow-impact side, i.e. tension side) of shape top surface longitudinal central axis line, it is pre- can to fully play soap-free emulsion polymeization in this way
The energy consumption of power apparatus is answered to act on (because the setting of prestressing without bondn device can just give full play to its energy consumption effect at tension), together
When by limiting the minimum value with a distance from the horizontal direction of vertical un-bonded prestressed steel strand device from the surface of barricade vertical direction,
The influence that the failure of outside concrete plays un-bonded prestressed steel strand system effectiveness can effectively be mitigated.Simultaneously as
The stress of cantilever beam is similar in the middle part of two flank barricades, the inside in the middle part of two flank barricades is provided with bracing members, and bracing members can
Effectively to reduce the position in the middle part of two flank barricades, ensure the overall stability of wing barricade.
Mud-rock flow through this design shunts device of blocking, and can play when by mud-rock-flow-impact and shunt mud-rock flow
Effect, impact of the mud-rock flow to the subsequent important building of device of blocking or structures is prevented, by the structure of special optimization
Arrangement form, it is ensured that whole device maintains the stability of itself under the action of impact load.By the mud-rock flow of shunting
Because the area that mud-rock flow flows after shunting becomes larger, to accelerate the decaying of mud-rock flow energy of flow, make mud-rock flow
Sliding distance greatly reduces.The present apparatus is blocked device compared to general mud-rock flow, takes full advantage of energy after mud-rock flow diffusion
Decay rapid principle, in the case where bearing small part frontal impact load, can slow down mud-rock flow flow velocity or
The direction of motion for changing mud-rock flow can also ensure, from stability when bearing mud-rock-flow-impact load, have outstanding
Mud-rock flow is taken precautions against natural calamities effect.
Description of the drawings
Fig. 1 is the vertical view of the utility model；
Fig. 2 is the utility model a-a sectional views；
Fig. 3 is the utility model b-b sectional views；
Fig. 4 is the sectional view of the utility model un-bonded prestressed steel strand device；
Wherein, arc-shaped barricade 1, wing barricade 2, bracing members 3, sole plate 4, uplift pile foundation platform 5, uplift pile 6, steel
Muscle net 7, un-bonded prestressed steel strand device 8, steel strand wires 9, anchorage 10, bellows 11.
Specific implementation mode
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
As shown in Figs 1-4, a kind of mud-rock flow of wedge shape provided by the utility model shunts device of blocking, which includes circle
Curved retaining wall 1 and two wing barricades 2；The arc-shaped barricade 1 is located at the front end of whole device, the symmetrical fixed-wing barricade in both sides
2, the outside of wing barricade 2 and the outside of arc-shaped barricade 1 smoothly transit；The inside of arc-shaped barricade 1 and the inside of wing barricade 2 are equal
Prestressing without bondn system is set, and (deviates from mud-rock-flow-impact side) on the inside of the two and all has slope；The prestressing without bondn
System includes several vertical un-bonded prestressed steel strand devices 8, and the un-bonded prestressed steel strand device 8 is by steel strand wires
9, the bellows 11 that the anchorage 10 of steel strand wires is fixed at both ends and steel strand wires outside is cased with forms；The arc-shaped barricade 1 and wing gear
The bottom of wall 2 is both provided with sole plate 4, and pull-out resistant pile foundation is added under the sole plate 4 with prestressing without bondn system
Plinth, the uplift pile basis include uplift pile foundation platform 5 and uplift pile 6；In the un-bonded prestressed steel strand device 8
The lower end of steel strand wires 9 is anchored at the inside of uplift pile foundation platform 5 by anchorage 10, and the upper end of steel strand wires 9 is solid by anchorage 10
It is scheduled on gear coping；Several vertical prestressing without bondns that prestressing without bondn system on the inside of arc-shaped barricade is included
Steel strand wires device 8 is distributed in inverted triangle, and the bottom edge of triangle is located at mud-rock-flow-impact side；The top surface of the wing barricade 2 is rectangular
Shape, rectangle are parallel to long side direction and two axis of symmetry perpendicular to long side direction, cross top surface rectangle and are parallel to length
The symmetry axis of edge direction does the plane perpendicular to 2 top surface of wing barricade, and wing barricade 2 is divided into 2 outside of wing barricade (close to mud-rock flow
Impact side) and 2 inside (having barricade slope side) of wing barricade.The prestressing without bondn system of the inside of the wing barricade 2 included
Several vertical un-bonded prestressed steel strand devices 8 are arranged in 2 outside of wing barricade (close to mud-rock-flow-impact side) side.Pass through this
The un-bonded prestressed steel strand device of sample preferred arrangement can fully play its consumption when bearing mud-rock-flow-impact
Dissipate mud-rock-flow-impact energy, the effect for protecting whole device not collapse.Two flank barricades, 2 middle part is equipped with bracing members 3, steel in inside
Support 3 is fixedly connected with sole plate 4 and two flank barricades, 2 inside, and the sole plate 4 of two flank barricades 2 is wider, to there is foot
Bracing members 3 are fixed in enough spaces.By numerical simulation, when bearing mud-rock-flow-impact, the wing barricade 2 of both sides primarily serves shunting
Effect, by the numerical simulation analysis of ANSYS platforms, analysis result is shown in 2 center mud-rock flow of wing barricade and is applied to the wing
The pressure of barricade 2 is maximum, and the inside setting bracing members 3 at 2 middle part of wing barricade can improve the stress condition of wing barricade 2, ensure
The stability of wing barricade 2.By the numerical simulation analysis of ANSYS platforms, find the angle when two flank barricades 2 be 55 °~
65 °, when the central angle of arc-shaped barricade 1 is 115 °~125 °, when bearing mud-rock-flow-impact load, device moves whole device
Force-responsive is minimum, and the effect that device shunts mud-rock flow is preferable.In the outside for being provided with prestressing without bondn system (close to mud-rock flow
Impact side) arrange that bar-mat reinforcement 7, the concrete layer thickness before bar-mat reinforcement 7 cannot be less than 30mm, bar-mat reinforcement 7 and prestressing without bondn
The distance of steel strand wires device 8 cannot be less than 20mm.The distance between each un-bonded prestressed steel strand device 8 is not less than 20mm
11 diameter of bellows nor less than 1 times simultaneously, to reduce between each un-bonded prestressed steel strand device 8 because of pretension
Overlapping and the stress concentration that occurs.The level on vertical surface of the un-bonded prestressed steel strand device 8 from barricade vertical direction
It is not less than 50mm to distance.The arrangement form of requirement control un-bonded prestressed steel strand device 8 in this way, it is ensured that
For device when bearing mud-rock-flow-impact, the failure for mitigating outside concrete plays 8 efficiency of un-bonded prestressed steel strand device
Influence,
30mm is cannot be less than with the spacing of placing of reinforcement in bar-mat reinforcement 7, and is not greater than 100mm.By arranging bar-mat reinforcement 7,
It can reinforce the ductility of the outside concrete of prestressing without bondn system, the outside concrete for mitigating prestressing without bondn system exists
Damage when mud-rock-flow-impact load is born, to ensure that prestressing without bondn system can under the action of mud-rock-flow-impact
The work leaned on.
When device works, arc-shaped barricade can change the flow direction of mud-rock flow, and the wing barricade of both sides plays guiding mud-rock flow fortune
The effect in dynamic direction.Stress at arc-shaped barricade and in the middle part of two flank barricades and deformation are maximum, this occurs at two in order to prevent
It destroys, prestressing without bondn system is provided at two at this.Prestressing without bondn system is by the soap-free emulsion polymeization of several special arrangements
Prestress wire forms.Prestressing without bondn system is set in Gravity Retaining Wall so that barricade and basis pass through steel strand wires
The stress of pre-add links together, when wall is shifted by impact, prestress wire will its return to initially
Position.And due to the swing of wall so that the time of contact of block stone and wall extends in mud-rock flow, and impact force becomes smaller, to
Reduce the dynamic response of whole device.The uplift pile basis being arranged under prestressing without bondn system simultaneously provides for whole device
Enough withdrawal resistances, uplift pile basis and prestressing without bondn system collective effect, can anti-locking apparatus by mud-rock flow
Impact is that unstability occurs to collapse.Mud-rock flow is after shunting, and flow area increases, energy attenuation, to which the present apparatus is changing mud
The speed of mud-rock flow flowing is reduced while rock glacier flows to, and then reduces the distance of mud-rock flow sliding.
A kind of wedge-shaped mud-rock flow through this design shunts device of blocking, and can be played mud when by mud-rock-flow-impact
The effect of rock glacier shunting, prevents impact of the mud-rock flow to the subsequent important building of device of blocking or structures, by special excellent
The structural arrangement form of change, it is ensured that whole device maintains the stability of itself under the action of impact load.By shunting
Mud-rock flow because after shunting mud-rock flow flow area become larger, to accelerate the decaying of mud-rock flow energy of flow, make
The sliding distance of mud-rock flow greatly reduces.The present apparatus is blocked device compared to general mud-rock flow, takes full advantage of mud-rock flow expansion
The rapid principle of energy attenuation can both slow down the stream of mud-rock flow in the case where bearing small part frontal impact load after dissipating
Speed can also change the direction of motion of mud-rock flow, can also ensure from stability when bearing mud-rock-flow-impact load, tool
There is mud-rock flow outstanding to take precautions against natural calamities effect.
Claims (8)
- The device 1. a kind of wedge shape mud-rock flow shunting is blocked, which is characterized in that the device includes arc-shaped barricade (1) and two wing gears Wall (2)；The arc-shaped barricade (1) is located at the front end of whole device, the symmetrical fixed-wing barricade (2) in both sides, arc-shaped barricade (1) it is made of armored concrete with two wing barricades (2)；The outside in the outside and arc-shaped barricade (1) of the wing barricade (2) It smoothly transits；The inside of the arc-shaped barricade (1) and the inside of wing barricade (2) are respectively provided with prestressing without bondn system, and two Slope is all had on the inside of person；The prestressing without bondn system includes several vertical un-bonded prestressed steel strand devices (8), The un-bonded prestressed steel strand device (8) is cased with by steel strand wires (9), the anchorage (10) of fixed steel strand wires and steel strand wires outside Bellows (11) composition；The bottom of the arc-shaped barricade (1) and wing barricade (2) is both provided with sole plate (4), with Uplift pile basis is added under the sole plate (4) of prestressing without bondn system, the uplift pile basis includes that uplift pile basis is held Platform (5) and uplift pile (6)；The lower end of the steel strand wires (9) is anchored at the interior of uplift pile foundation platform (5) by anchorage (10) The upper end in portion, steel strand wires (9) is fixed on gear coping by anchorage (10).
- The device 2. a kind of wedge-shaped mud-rock flow shunting according to claim 1 is blocked, which is characterized in that the arc-shaped barricade (1) several vertical un-bonded prestressed steel strand devices (8) that internal prestressing without bondn system is included are in inverted triangle Distribution, the bottom edge of triangle is located at mud-rock-flow-impact side.
- The device 3. a kind of wedge-shaped mud-rock flow shunting according to claim 1 is blocked, which is characterized in that the wing barricade (2) Top surface be rectangle, several vertical prestressing without bondns that the internal prestressing without bondn system of wing barricade (2) is included Steel strand wires device (8) is arranged on the outside of the longitudinal central axis line of rectangle top surface, that is, leans on mud-rock-flow-impact side.
- The device 4. a kind of wedge-shaped mud-rock flow shunting according to claim 1 is blocked, which is characterized in that two flank barricades (2) Middle part is equipped with bracing members (3) in inside, is fixedly connected on the inside of bracing members (3) and sole plate (4) and two flank barricades (2).
- The device 5. a kind of wedge-shaped mud-rock flow shunting according to claim 1 is blocked, which is characterized in that two flank barricades (2) Angle be 55 °~65 °, the central angle of arc-shaped barricade (1) is 115 °~125 °.
- The device 6. a kind of wedge-shaped mud-rock flow shunting according to claim 1 is blocked, which is characterized in that in prestressing without bondn It is not small that the outside arrangement bar-mat reinforcement (7) of system, bar-mat reinforcement (7) and barricade bear the concrete layer thickness between mud-rock-flow-impact face In 30mm, bar-mat reinforcement (7) is not less than 20mm at a distance from un-bonded prestressed steel strand device (8)；With row's steel in bar-mat reinforcement (7) The spacing of muscle is not less than 30mm, and is not more than 100mm.
- The device 7. a kind of wedge-shaped mud-rock flow shunting according to claim 1 is blocked, which is characterized in that each soap-free emulsion polymeization is answered in advance The distance between power steel strand wires device (8) is not less than 20mm, and bellows (11) diameter not less than 1 times.
- The device 8. a kind of wedge-shaped mud-rock flow shunting according to claim 1 is blocked, which is characterized in that vertical soap-free emulsion polymeization is pre- It is not less than 50mm with a distance from horizontal direction of the prestress steel strand device (8) from barricade outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820056677.0U CN207749486U (en) | 2018-01-14 | 2018-01-14 | A kind of wedge shape mud-rock flow shunting is blocked device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820056677.0U CN207749486U (en) | 2018-01-14 | 2018-01-14 | A kind of wedge shape mud-rock flow shunting is blocked device |
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| Publication Number | Publication Date |
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| CN207749486U true CN207749486U (en) | 2018-08-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112921903A (en) * | 2021-01-25 | 2021-06-08 | 枣庄学院 | Pile forest solid bed-solid phase unloading-erosion-preventing composite slag blocking dam |
| CN112942385A (en) * | 2021-01-28 | 2021-06-11 | 中国科学院、水利部成都山地灾害与环境研究所 | Village and town building torrent and debris flow protection system and design method |
-
2018
- 2018-01-14 CN CN201820056677.0U patent/CN207749486U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112921903A (en) * | 2021-01-25 | 2021-06-08 | 枣庄学院 | Pile forest solid bed-solid phase unloading-erosion-preventing composite slag blocking dam |
| CN112942385A (en) * | 2021-01-28 | 2021-06-11 | 中国科学院、水利部成都山地灾害与环境研究所 | Village and town building torrent and debris flow protection system and design method |
| CN112942385B (en) * | 2021-01-28 | 2023-01-13 | 中国科学院、水利部成都山地灾害与环境研究所 | Villages and small towns building torrent debris flow protection system and design method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |