CN111894661B - Subway collapse emergency treatment system and implementation method thereof - Google Patents
Subway collapse emergency treatment system and implementation method thereof Download PDFInfo
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- CN111894661B CN111894661B CN202010780767.6A CN202010780767A CN111894661B CN 111894661 B CN111894661 B CN 111894661B CN 202010780767 A CN202010780767 A CN 202010780767A CN 111894661 B CN111894661 B CN 111894661B
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- 238000000034 method Methods 0.000 title claims description 21
- 230000005484 gravity Effects 0.000 claims abstract description 64
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 235000020188 drinking water Nutrition 0.000 claims description 5
- 239000003651 drinking water Substances 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 4
- 230000015556 catabolic process Effects 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims 2
- 239000010959 steel Substances 0.000 claims 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 2
- 230000000149 penetrating effect Effects 0.000 description 9
- 230000000903 blocking effect Effects 0.000 description 6
- 239000002689 soil Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F11/00—Rescue devices or other safety devices, e.g. safety chambers or escape ways
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pulmonology (AREA)
- Emergency Management (AREA)
- Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Environmental & Geological Engineering (AREA)
- Emergency Lowering Means (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention relates to the field of infrastructure, in particular to a subway collapse emergency treatment system, which comprises: the counter-force system comprises a plurality of gravity pools, a plurality of clamping piles and a water body, the gravity pools are arranged adjacently in a cubic shape, the clamping piles are arranged between the adjacent gravity pools, holes are formed in the tops of the gravity pools, water taps are arranged outside the side walls of the gravity pools, the clamping piles are made of reinforcing steel bars and expansion bolts, the reinforcing steel bars are located inside the expansion bolts, and the jacking system comprises jacks and expansion heads; the tail part of the jack is fixedly arranged on the first gravity pool, and the expanding headstock is arranged at the end part of the jack; the shuttle system comprises a through pipe and a conical head, wherein one end of the through pipe is connected with the expansion head, and the other end of the through pipe is connected with the conical head; the supply system is positioned in the through pipe and comprises a supply vehicle and a pipeline, one end of the pipeline is connected with the supply vehicle, and the other end of the pipeline is connected with an external control system. The invention provides an intelligent system for rapid rescuing from collapse, which has the characteristics of high implementation speed and good effect.
Description
Technical Field
The invention relates to the field of infrastructure, in particular to an emergency treatment system for subway collapse and an implementation method thereof.
Background
During the excavation construction process of the subway, the upper rock-soil body can be collapsed due to various reasons, such as geological state, stress state, underground water change, improper design or improper construction method and the like. Once the subway collapses, the safety of constructors inside the subway is threatened greatly. Therefore, it is important to perform emergency treatment in a subway collapse area. The traditional method adopts an excavator to dig a channel out of the collapsed rock-soil mass, the construction efficiency of the method is extremely low, the top rock-soil mass can be collapsed again, and the dug channel is closed again; the patent (application No. 201410661849.3) proposes a method of using a spiral unearthing function and an oil cylinder jacking function to jack a pipe curtain into a caving area, however, the method has the disadvantages of large required counter force, complex device installation, large time consumption and inconvenience for emergency treatment; the patent (application No. 201510621696.4) provides a push bench and support rack system for carrying a pipe assembly that requires tapping that is difficult to implement in a loose breakout zone; some treatment devices cannot pass through the collapse area, and the intelligence degree is not high. In view of this, the invention provides an emergency handling system for subway collapse and an implementation method thereof, which have the advantages of simple process, convenience in implementation and high intelligence.
Disclosure of Invention
The invention aims to provide an emergency treatment system for subway collapse and an implementation method thereof.
In order to realize the purpose, the technical scheme of the invention is as follows: an emergency treatment system for a subway breakdown, comprising: the counter-force system comprises a plurality of gravity pools, a plurality of clamping piles and a water body, the gravity pools are arranged adjacently in a cubic shape, the clamping piles are arranged between the adjacent gravity pools, holes are formed in the tops of the gravity pools, water taps are arranged outside the side walls of the gravity pools, the clamping piles are made of reinforcing steel bars and expansion bolts, the reinforcing steel bars are located inside the expansion bolts, and the jacking system comprises jacks and expansion heads; the tail part of the jack is fixedly arranged on the first gravity pool, and the expanding headstock is arranged at the end part of the jack; the shuttle system comprises a through pipe and a conical head, wherein one end of the through pipe is connected with the expanding head, and the other end of the through pipe is connected with the conical head; the supply system is positioned inside the through pipe and comprises a supply vehicle and a pipeline, one end of the pipeline is connected with the supply vehicle, and the other end of the pipeline is connected with an external control system.
And the external control system is used for conveying air into the pipeline and displaying the information transmitted by the video device and the voice device.
Foretell subway collapses promptly processing system, the inside crossbeam that is equipped with of gravity pond.
The subway collapse emergency treatment system further comprises a video device, a voice device and food, wherein the video device and the voice device are fixedly installed at the top of the supply vehicle.
An implementation method of a subway collapse emergency treatment system comprises the following steps,
the method comprises the following steps: transporting a gravity pool to a distance of 1.0-3.0m in front of the collapse body, wherein the side with the jack faces the collapse body; rapidly injecting a water body into the gravity tank, vertically drilling a hole in the bottom of the subway at a position close to the rear side wall behind the gravity tank while injecting water, and driving a clamping pile into the drilled hole; placing other gravity tanks behind the first gravity tank in sequence, and driving a clamping pile behind each gravity tank according to the method;
step two: the cone head is horizontally placed at the position of the collapse body, the cone tip faces the collapse body, the height of the cone tip is equal to that of the jack, then the penetrating pipe is inserted at the tail part of the cone head and sequentially connected to the penetrating pipe until the position of the jack, the expansion head is erected at the top end part of the jack, the jack is started to move forwards, the penetrating pipe gradually moves towards the collapse body under the action of the jack, when the jack reaches the maximum range, the jack is retracted, the next penetrating pipe is installed, and the jack is pressurized again, so that the cone head penetrates through the collapse body; the conical head passes through the conical head and then freely falls under the action of gravity;
step three: and a supply vehicle is arranged in the through pipe, the two pipelines are brought into the other end of the through pipe, air and drinking water are sent into the trapped area, and a video device and a voice device are further arranged on the supply vehicle.
The working principle of the invention is that the gravity action of the gravity pool and water is utilized, the blocking action of the blocking pile is added to form counter force on the jack, the penetrating pipe rapidly enters the collapse body under the thrust action of the jack, air, water and food which are urgently needed by the trapped person are sent to the hand of the trapped person by the aid of the supply vehicle, the environmental characteristics of the trapped area are known by the aid of the video and voice devices, and the trapped person is consolation. Therefore, the invention provides an intelligent system for rapidly rescuing from collapse, which has the characteristics of high implementation speed and good effect.
Drawings
FIG. 1 is a schematic structural diagram of the present invention in an implementation process.
Fig. 2 is a schematic structural diagram after the present invention is implemented.
Fig. 3 is a partial schematic view of the stake of the present invention.
The mark in the figure is: 1, a gravity pool; 2, pile clamping; 3, a jack; 4, expanding the head; 5, pipe penetration; 6, a conical head; 7, disintegrating bodies; 8, supplying the vehicle; 9 a pipeline; 10 a video device; 11 a voice device; 12, a food; 13 holes are formed; 14 a water tap; 15 reinforcing steel bars; 16 expansion bolt; 17 an external control system; 18 cross-beam.
Detailed Description
The subway collapse emergency treatment system comprises: a reaction system, a jacking system, a shuttling system and a replenishment system. The counterforce system comprises a gravity pool 1, a clamping pile 2 and a water body, wherein the gravity pool 1 is made of reinforced concrete and has certain strength and rigidity, the gravity pool 1 is cubic, the wall thickness is 20-30 cm, the height and the length are both 1.5-2.0 m, the width is 1.0-1.5 m, a hole 13 is reserved at the top of the gravity pool 1, a water supply body flows in, a water faucet 14 is reserved on the outer side wall, the water supply body flows out, and 2 cross beams 18 are arranged in the gravity pool 1 in the front-back direction to improve the rigidity of the gravity pool 1 in the front-back direction; the pile blocking 2 is made of reinforcing steel bars 15 and expansion bolts 16, as shown in fig. 3, the reinforcing steel bars 15 are located inside the expansion bolts 16, the diameter of the reinforcing steel bars 15 is 2.0-3.0 cm, the length of the reinforcing steel bars is about 0.5m, part of the pile blocking 2 is driven into rock and soil mass or concrete at the bottom of a subway, part of the pile blocking 2 is exposed outside, and the pile blocking 2 is driven behind the gravity pool 1 to provide partial counter force for the gravity pool 1; the water body is tap water and is poured into the gravity tank 1 to increase the gravity of the gravity tank 1 and the performance of a counterforce system; the gravity tanks 1 are adjacent to each other in the front-back direction and provide counter force together, and the side surfaces of the gravity tanks 1 with the water taps are positioned on the left side and the right side; the jacking system comprises a jack 3 and an enlarged head 4, preferably a large-tonnage long-stroke jack, wherein the enlarged head 4 is erected at the end part of the jack 3 to enlarge the area of the end part of the jack 3, and the tail part of the jack 3 is fixedly arranged on the gravity pool 1; the shuttle system comprises a through pipe 5 and a conical head 6, wherein the through pipe 5 is made of carbon fiber or glass fiber, one end of the through pipe is an expanded end, the inner diameter of the through pipe is slightly larger than the outer diameter of the other end of the through pipe, the adjacent through pipes 5 can be quickly inserted and connected, the through pipes 5 have higher strength and rigidity, and the diameter of the through pipes is 0.2-0.3 m; the conical head 6 is also made of carbon fiber or glass fiber, is of a solid structure and is conical, the tail part of the conical head 6 is a reduced end, the reduced end is just inserted into the penetrating pipe 5, and the conical head 6 is connected to the end part of the penetrating pipe 5, so that the penetrating pipe 5 can quickly penetrate through a collapse area, and rock and soil bodies cannot enter the penetrating pipe; the replenishment system comprises a replenishment car 8, a pipeline 9, a video device 10, a voice device 11 and food 12, wherein the replenishment car 8 adopts a crawler chassis trolley, has the width of 10-20 cm, the length of 20-30 cm and the height of 8-10 cm, and has strong trafficability characteristic; the pipeline 9 comprises two pipelines, one pipeline is a gas pipeline, the other pipeline is a water pipeline, and the end part of the pipeline 9 is bound and fixed on the supply vehicle 8 and used for respectively conveying air and drinking water to the trapped area; the video device 10 is fixedly arranged at the top of the supply vehicle 8 and used for collecting the environment and personnel conditions of the trapped area and transmitting the environment and personnel conditions to external operators through a video line; the voice device 11 includes a voice pickup device and a voice amplifier for communication between the trapped person and the external person; food items 12 are secured in the feeding cart for delivery to the trapped person.
When the intelligent system is implemented specifically, all the systems are prepared outside the subway, and once the subway has a collapse accident, if people are trapped, the intelligent system is implemented rapidly. Firstly, quickly transporting a gravity pool 1 to a position about 2.0m in front of a collapse body by using a forklift, wherein one side with a jack 3 faces the collapse body; rapidly injecting a water body into the gravity pool 1, vertically drilling a hole into the bottom of the subway at a position close to the rear side wall behind the gravity pool 1 while injecting water, and driving the clamping pile 2 into the drilled hole; then, sequentially placing other gravity pools 1 behind the former by using a forklift so that the gravity pools are adjacent to each other, and driving a clamping pile 2 behind each gravity pool 1 according to the method; horizontally placing a cone head 6 of the shuttle system at the position of the collapse body, enabling the cone tip to face the collapse body, enabling the height to be equal to that of a jack 3, then inserting a through pipe 5 at the tail part of the cone head, sequentially connecting the through pipes 5 until the position of the jack 3, erecting an expansion head 4 at the end part of the jack 3, starting the jack 3 to move forwards, enabling the through pipe 5 to gradually move into the collapse body under the action of the jack 3 at the moment, retracting the jack 3 when the jack 3 reaches the maximum range, installing the next through pipe 5, and applying pressure to the jack 3 again until the cone head passes through the collapse body, wherein the cone head 6 freely falls under the action of gravity after passing through the cone head; a supply vehicle 8 is placed in the through pipe 5, two pipelines 9 are brought to the other end of the through pipe 5, air and drinking water are sent into the trapped area, and the trapped person takes food from the supply vehicle.
Examples
As shown in fig. 1 to 3, when some iron passes through the invasion contact zone, 3 people are trapped due to the problems of collapse caused by poor surrounding rock properties and high underground water level. Therefore, the system quickly implements the invention to rescue trapped people. Firstly, quickly transporting a gravity pool 1 to a position 2.0m in front of a collapse body by using a forklift, wherein one side with a jack 3 faces the collapse body; rapidly injecting water into the gravity pool 1, vertically drilling 3 holes in the bottom of the subway at a position close to the rear side wall behind the gravity pool 1 while injecting water, and driving 3 pile clamps 2 into the drilled holes; then, the other 3 gravity pools are sequentially placed behind the former by using a forklift so as to be adjacent to each other, and a clamping pile 2 is arranged behind each gravity pool 1 according to the method; horizontally placing a cone head 6 of the shuttle system at the position of the collapse body, enabling the cone tip to face the collapse body, enabling the height to be equal to that of a jack 3, then inserting a through pipe 5 at the tail part of the cone head 6, sequentially connecting the through pipes 5 until the position of the jack 3, erecting an expansion head 4 at the end part of the jack 3, starting the jack 3 to move forwards, enabling the through pipe 5 to gradually move into the collapse body under the action of the jack 3 at the moment, retracting the jack 3 when the jack 3 reaches the maximum range, installing the next through pipe 5, and applying pressure to the jack 3 again until the cone head 6 passes through the collapse body and the cone head 6 freely falls under the action of gravity after passing through; a supply cart 8 is placed in the through pipe 5, two pipes 9 are brought to the other end of the through pipe 5, air and drinking water are sent into the trapped area, and the trapped person takes the food 12 off the supply cart 8. After the implementation of 3 hours, the collapse with the thickness of about 7m can pass through, the trapped personnel are rescued, a large amount of manpower and material resources can be saved compared with the traditional method, and the life of the trapped personnel can be further guaranteed.
Claims (2)
1. An emergency treatment system for a subway breakdown, comprising: the counter-force system comprises a plurality of gravity pools (1), a plurality of clamping piles (2) and a water body, the gravity pools (1) are arranged adjacently in a cube shape, the clamping piles are arranged between the adjacent gravity pools (1), holes (13) are formed in the tops of the gravity pools (1), a water faucet (14) is arranged outside the side wall of each gravity pool, each clamping pile (2) is made of a steel bar (15) and an expansion bolt (16), the steel bars are located inside the expansion bolts, and the jacking system comprises jacks (3) and expansion heads (4); the tail part of the jack (3) is fixedly arranged on the first gravity pool (1), and the expansion head (4) is erected at the end part of the jack (3); the shuttle system comprises a through pipe (5) and a conical head (6), one end of the through pipe (5) is connected with the enlarged head (4), and the other end of the through pipe is connected with the conical head (6); the supply system is positioned in the through pipe (5) and comprises a supply vehicle (8) and a pipeline (9), one end of the pipeline (9) is connected with the supply vehicle (8), and the other end of the pipeline is connected with an external control system (17);
the external control system (17) is used for conveying air into the pipeline (9) and displaying information transmitted by the video device (10) and the voice device (11);
a cross beam (18) is arranged in the gravity pool (1);
the replenishment system further comprises a video device (10), a voice device (11) and food (12), wherein the video device (10) and the voice device (11) are fixedly arranged on the top of the replenishment vehicle (8).
2. An implementation method of a subway collapse emergency treatment system is characterized by comprising the following steps,
the method comprises the following steps: transporting a gravity basin (1) to a distance of 1.0-3.0m in front of the collapsed body, wherein the side with the jack (3) is facing the collapsed body; rapidly injecting water into the gravity pool, vertically drilling a hole in the bottom of the subway at a position close to the rear side wall behind the gravity pool (1) while injecting water, and driving the clamping pile (2) into the drilled hole; sequentially placing other gravity pools (1) behind the first gravity pool (1), and driving a clamping pile (2) behind each gravity pool (1) according to the method;
step two: the cone head (6) is horizontally placed at the position of the collapse body, the cone tip faces the collapse body, the height of the cone tip is equal to that of the jack (3), then the through pipe (5) is inserted at the tail part of the cone head, the through pipe (5) is sequentially connected until the position of the jack (3), the expansion head (4) is erected at the top end part of the jack, the jack (3) is started to move forwards, the through pipe (5) gradually moves towards the collapse body under the action of the jack, when the jack (3) reaches the maximum range, the jack (3) is retracted, the next through pipe (5) is installed, and pressure is applied to the jack again, so that the cone head (6) penetrates through the collapse body; the conical head (6) passes through and then freely falls under the action of gravity;
step three: a supply vehicle (8) is arranged in the through pipe (5), two pipelines (9) are brought to the other end of the through pipe (5), air and drinking water are sent into the trapped area, and a video device (10) and a voice device (11) are further arranged on the supply vehicle (8).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010780767.6A CN111894661B (en) | 2020-08-06 | 2020-08-06 | Subway collapse emergency treatment system and implementation method thereof |
| PCT/CN2021/109814 WO2021244675A1 (en) | 2020-08-06 | 2021-07-30 | Subway collapse emergency management system and method for implementation thereof |
| LU501208A LU501208B1 (en) | 2020-08-06 | 2021-07-30 | Subway collapse emergency management system and method for implementation thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010780767.6A CN111894661B (en) | 2020-08-06 | 2020-08-06 | Subway collapse emergency treatment system and implementation method thereof |
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| Publication Number | Publication Date |
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| CN111894661A CN111894661A (en) | 2020-11-06 |
| CN111894661B true CN111894661B (en) | 2022-07-26 |
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| CN202010780767.6A Active CN111894661B (en) | 2020-08-06 | 2020-08-06 | Subway collapse emergency treatment system and implementation method thereof |
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| Country | Link |
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| CN (1) | CN111894661B (en) |
| LU (1) | LU501208B1 (en) |
| WO (1) | WO2021244675A1 (en) |
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| CN111894661B (en) * | 2020-08-06 | 2022-07-26 | 中铁九局集团有限公司 | Subway collapse emergency treatment system and implementation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6364418B1 (en) * | 1996-11-12 | 2002-04-02 | Amvest Systems, Inc. | Cutting heads for horizontal remote mining system |
| CN102003204A (en) * | 2010-11-12 | 2011-04-06 | 中铁第四勘察设计院集团有限公司 | Mobile tunnel construction lifesaving system |
| CN104863630A (en) * | 2015-06-03 | 2015-08-26 | 南京湛泸科技有限公司 | Heading machine used for emergency rescue channel of well mine roadway roof |
| CN106321144A (en) * | 2015-06-16 | 2017-01-11 | 谭荣兵 | Mining life-rescuing system |
| CN110486031A (en) * | 2019-09-27 | 2019-11-22 | 大连理工大学 | A kind of underground big cross section rescue channel push pipe fast construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08266667A (en) * | 1995-03-31 | 1996-10-15 | Nohmi Bosai Ltd | Robot facility for automatically cleaning subject to be cleaned |
| CN102140928A (en) * | 2010-02-03 | 2011-08-03 | 沈忠毅 | Tunnel-type underground escape system |
| CN202273253U (en) * | 2011-09-07 | 2012-06-13 | 中国电力科学研究院 | Press-down and horizontal combined condition testing device |
| CN104416563B (en) * | 2013-08-26 | 2019-04-16 | 龙伟 | A kind of turnable search and rescue robot based on double helix driving |
| CN210347302U (en) * | 2019-07-25 | 2020-04-17 | 中冶建筑研究总院有限公司 | Loading device for load test |
| CN111894661B (en) * | 2020-08-06 | 2022-07-26 | 中铁九局集团有限公司 | Subway collapse emergency treatment system and implementation method thereof |
-
2020
- 2020-08-06 CN CN202010780767.6A patent/CN111894661B/en active Active
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2021
- 2021-07-30 WO PCT/CN2021/109814 patent/WO2021244675A1/en active Application Filing
- 2021-07-30 LU LU501208A patent/LU501208B1/en active IP Right Grant
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6364418B1 (en) * | 1996-11-12 | 2002-04-02 | Amvest Systems, Inc. | Cutting heads for horizontal remote mining system |
| CN102003204A (en) * | 2010-11-12 | 2011-04-06 | 中铁第四勘察设计院集团有限公司 | Mobile tunnel construction lifesaving system |
| CN104863630A (en) * | 2015-06-03 | 2015-08-26 | 南京湛泸科技有限公司 | Heading machine used for emergency rescue channel of well mine roadway roof |
| CN106321144A (en) * | 2015-06-16 | 2017-01-11 | 谭荣兵 | Mining life-rescuing system |
| CN110486031A (en) * | 2019-09-27 | 2019-11-22 | 大连理工大学 | A kind of underground big cross section rescue channel push pipe fast construction method |
Also Published As
| Publication number | Publication date |
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| WO2021244675A1 (en) | 2021-12-09 |
| LU501208B1 (en) | 2022-08-19 |
| CN111894661A (en) | 2020-11-06 |
| LU501208A1 (en) | 2022-02-07 |
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