NL2030437B1 - Support-spallation integrated system for preventing damage of surrounding rock of roadway by rock burst - Google Patents

Support-spallation integrated system for preventing damage of surrounding rock of roadway by rock burst Download PDF

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Publication number
NL2030437B1
NL2030437B1 NL2030437A NL2030437A NL2030437B1 NL 2030437 B1 NL2030437 B1 NL 2030437B1 NL 2030437 A NL2030437 A NL 2030437A NL 2030437 A NL2030437 A NL 2030437A NL 2030437 B1 NL2030437 B1 NL 2030437B1
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Netherlands
Prior art keywords
valve
spallation
roadway
rock
preventing damage
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NL2030437A
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Dutch (nl)
Inventor
Zhou Yi
Xue Jiaqi
Wu Jiacheng
Jia Baoxin
Wang Tianci
Wu Shaohong
Wang Kaixing
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Univ Liaoning Technical
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Priority to NL2030437A priority Critical patent/NL2030437B1/en
Application granted granted Critical
Publication of NL2030437B1 publication Critical patent/NL2030437B1/en

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04—Lining with building materials
    • E21D11/05—Lining with building materials using compressible insertions
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C37/00—Other methods or devices for dislodging with or without loading
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)

Abstract

The present invention discloses a support—spallation integrated system for preventing damage of a surrounding rock of a roadway by rock burst, comprising a support system and a spallation system, an internal chamber of a hydraulic prop of the support system being in communication with a rock spallation device of the spallation system via electromagnetic valves, an internal chamber of the hydraulic prop being in communication with an oil tank via a hydraulic pump, a check valve flowing to the internal chamber being provided on a pipeline of the hydraulic pump and the internal chamber, an unloading valve and, a safety valve being connected to the internal chamber of the hydraulic prop, and oil paths where the unloading valve and the safety valve are located being connected in parallel.

Description

P898/NLpd
SUPPORT-SPALLATION INTEGRATED SYSTEM FOR PREVENTING DAMAGE OF
SURROUNDING ROCK OF ROADWAY BY ROCK BURST
TECHNICAL FIELD
The present invention relates to the technical field of sup- port systems, and more particularly, to a support-spallation inte- grated system for preventing damage of a surrounding rock of a roadway by rock burst.
BACKGROUND ART
Rock burst is a sudden and violent damage dynamic phenomenon of surrounding rock in a coal mine due to the instantaneous re- lease of elastic deformation energy, which is one of the major dy- namic disasters in coal mine production. The support is the most direct barrier to face the risk of rock burst and to prevent the instability of the surrounding rock. The hydraulic prop is a flex- ible prop which uses hydraulic pressure to generate working re- sistance and realize column lifting and unloading. When the exter- nal load exceeds a threshold value set by the hydraulic prop, the safety valve is immediately opened to discharge liquid and relieve pressure. When the load falls within the threshold value, the safety valve is automatically closed.
In the underground mining process, the common hydraulic prop is widely used, but there is a serious defect. Discharge flow due to pressure relief per unit time of a safety valve of the hydrau- lic prop is a certain value. When sudden impact occurs, if the im- pact is too large, the safety valve will fail to relieve the pres- sure in time, which will cause explosion of cylinder, seal ring crushing, instability and thus bending of the prop and other haz- ards, thus leading to the failure of the entire support system.
Hidden dangers will be caused to safety under the mine.
SUMMARY
The object of the present invention is to provide a support- spallation integrated system for preventing damage of a surround-
ing rock of a roadway by rock burst, so as to solve the above- mentioned problems existing in the prior art, and to enable hy- draulic props to release pressure while fracturing the rock mass to release excess internal stress in the rock mass, thereby main- taining the safety of the whole support system.
In order to achieve the above-mentioned object, the present invention provides the following solutions.
According to the present invention, there is provided a sup- port-spallation integrated system for preventing damage of a sur- rounding rock of a roadway by impact, comprising a support system and a spallation system,an internal chamber of a hydraulic prop of the support system being in communication with a rock spallation device of the spallation system via electromagnetic valves.
Preferably, an internal chamber of the hydraulic prop is in communication with an oil tank via a hydraulic pump, and a check valve flowing to the internal chamber is provided on a pipeline of the hydraulic pump and the internal chamber.
Preferably, an unloading valve and a safety valve are con- nected to the internal chamber of the hydraulic prop, oil paths where the unloading valve and the safety valve are located are connected in parallel, and the check valve, the unloading valve and the safety valve are integrated into a three-way valve.
Preferably, the electromagnetic valves consists of a two- position two-way electromagnetic valve and a two-position four-way electromagnetic valve., and a pressure relay is provided between the two-position two-way electromagnetic valve and the internal chamber of the hydraulic prop.
Preferably, a two-position four-way electromagnetic valve is provided among the piston cavity, the rod cavity and the oil tank of the rock spallation device.
Preferably, the two-position four-way electromagnetic valve is in communication with the two-position two-way electromagnetic valve via a pipeline, wherein the pipeline is provided with a branch, and the branch is in communication with the check valve flowing to the rod cavity, the hydraulic pump and the oil tank in sequence.
Preferably, a cylinder body of the hydraulic prop comprises a housing, a base and a conduit, a lower end of the housing being sleeved on the base, a sealing element being provided between the housing and the base, a through-hole in communication with the in- ternal chamber being provided on the base, an outer end of the through-hole being provided with an annular groove, the conduit passing through the housing and being in threaded connection with the outer end of the through-hole, and the conduit being used for connecting a pipeline in communication with the two-position two- way electromagnetic valve.
Preferably, the sealing element comprises a sealing ring and a steel wire composite sealing strip, the base is provided with an upper sealing groove and a lower sealing groove, an upper end of the base is provided with the sealing ring, and a lower end of the base is provided with the steel wire composite sealing strip.
Preferably, a connecting end of the conduit is a stepped hole, a sealing groove is provided on a stepped surface of the stepped hole, and a sealing ring is provided between the sealing groove and an outer end surface of the through-hole.
The present invention achieves the following technical ef- fects with respect to the prior art.
In the present invention, released emulsion can be reused for the rock spallation device to spall the surrounding rock, releas- ing an internal stress of overlying rock mass to eliminate rock burst, avoiding damage of the hydraulic prop caused by the safety valve of the hydraulic prop failing to relieve the pressure in time, and maintaining the safety of the whole support system.
BRIEF DESCRIPTION OF THE DRAWINGS
In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, a brief description will be given below of the drawings which need to be used in the embodiments. It is obvious that the drawings in the following description are only some embodiments of the present in- vention, and it would have been possible for a person of ordinary skill in the art to obtain other drawings according to these draw- ings without involving any inventive effort.
FIG. 1 is a schematic view showing a principle of a support-
spallation integrated system for preventing damage of a surround- ing rock of a roadway by rock burst according to the present in- vention;
FIG. 2 is a schematic view showing a structure of a cylinder body according to the present invention;
FIG. 3 is a schematic view showing a structure of a base ac- cording to the present invention;
FIG. 4 is a schematic view showing a structure of a housing according to the present invention; and
FIG. 5 is a schematic view showing a structure of a conduit according to the present invention.
In the drawings: 1-prop, 2-housing, 3-hydraulic pump, 4-check valve, 5-unloading valve, 6-safety valve, 7-pressure relay, 8-two- position two-way electromagnetic valve, 9-o0il tank, 10-two- position four-way electromagnetic valve, ll-rock spallation de- vice, 12-base, 13-conduit, 14-sealing groove, 15-annular groove, 16-through-hole.
DETAILED DESCRIPTION OF THE EMBODIMENTS
The technical solutions of the embodiments of the present in- vention will now be described more clearly and fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. It is to be understood that the embod- iments described are only a few, but not all embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without involving any inventive effort fall within the scope of the present invention.
The object of the present invention is to provide a support- spallation integrated system for preventing damage of a surround- ing rock of a roadway by rock burst, so as to solve the above- mentioned problems existing in the prior art, and to enable hy- draulic props to release pressure while fracturing the rock mass to release excess internal stress in the rock mass, thereby main- taining the safety of the whole support system.
The above-mentioned objects, features and advantages of the present invention will be more clearly understood from the follow-
ing detailed description taken in conjunction with the accompany- ing drawings and specific embodiments.
As shown in FIGS. 1 to 5, the present embodiment provides a support-spallation integrated system for preventing damage of a 5 surrounding rock of a roadway by rock burst, comprising a support system and a spallation system, an internal chamber of a hydraulic prop 1 of the support system being in communication with a rock spallation device 11 of the spallation system via electromagnetic valves. An internal chamber of the hydraulic prop 1 is in communi- cation with an oil tank 9 via a hydraulic pump 3, and a check valve 4 flowing to the internal chamber is provided on a pipeline of the hydraulic pump 3 and the internal chamber of the hydraulic prop 1. An unloading valve 5 and a safety valve 6 are connected to the internal chamber of the hydraulic prop 1, oil paths where the unloading valve 5 and the safety valve 6 are located are connected in parallel, and in the present embodiment the check valve 4, the unloading valve 5 and the safety valve 6 are integrated into a three-way valve, so as to ensure that the internal chamber of the hydraulic prop 1 is provided with liquid inlet, unloading and overload pressure relief. The electromagnetic valves consists of a two-position two-way electromagnetic valve 8 and a two-position four-way electromagnetic valve 10, and a pressure relay 7 is pro- vided between the two-position two-way electromagnetic valve 8 and the internal chamber of the hydraulic prop 1. The fluid in the hy- draulic prop 1 and the rock spallation device 11 as well as all the oil paths is an emulsion.
A two-position four-way electromagnetic valve 10 is provided among the piston cavity, the rod cavity and the oil tank 9 of the rock spallation device 11. The two-position four-way electromag- netic valve 10 is in communication with the two-position two-way electromagnetic valve 8 via a pipeline, wherein the pipeline is provided with a branch, and the branch is in communication with the check valve 4 flowing to the rod cavity, the hydraulic pump 3 and the oil tank 9 in sequence, so as to provide the emulsion for the rock spallation device 11.
A cylinder body of the hydraulic prop 1 comprises a housing 2, a base 12 and a conduit 13, a lower end of the housing 2 being sleeved on the base 12, a sealing element being provided between the housing 2 and the base 12, a through-hole 16 in communication with the internal chamber being provided on the base 12, an outer end of the through-hole 16 being provided with an annular groove 15, the conduit 13 passing through the housing 2 and being in threaded connection with the outer end of the through-hole 16, and the conduit 13 being used for connecting a pipeline in communica- tion with the two-position two-way electromagnetic valve 8. The sealing element comprises a sealing ring and a steel wire compo- site sealing strip, the base 12 is provided with an upper sealing groove and a lower sealing groove 14 respectively located on an upper part and a lower part of the conduit 13, the housing 2 being provided with a corresponding sealing groove 14, an upper end of the base 12 is provided with the sealing ring, and a lower end of the base 12 is provided with the steel wire composite sealing strip. A connecting end of the conduit 13 is a stepped hole, a sealing groove 14 is provided on a stepped surface of the stepped hole, and a sealing ring is provided between the sealing groove 14 and an outer end surface of the through-hole 16.
The specific working process of the support-spallation inte- grated system for preventing damage of a surrounding rock of a roadway by rock burst in this embodiment is as follows.
Prior to operation, the hydraulic prop 1 and the rock spalla- tion device 11 are assembled with a hose into an oil path. A lig- uid injection handle is inserted into the three-way valve of the hydraulic prop 1, and the piston rod of the hydraulic prop 1 reaches a top plate to perform a normal initial support stage. At this time, the two-position two-way electromagnetic valve 8 is in a normally closed disconnected state, the oil passage is discon- nected, and the hydraulic prop 1 performs a normal support work.
Then the liquid injection handle is injected into the rod chamber of the rock spallation device 11 via the check valve 4. Liquid in- jection is stopped when the piston rod of the rock spallation de- vice 11 is uppermost, so that the oil cylinder of the rock spalla- tion device 11 is in a standby working state, and sufficient emul- sion is left in the pipeline to serve as a transmission medium.
When the hydraulic prop 1 is impacted by a large load, the pressure of its internal chamber increases rapidly. When the hy- draulic pressure reaches a threshold value of the safety valve 6, the safety valve 6 opens a chamber and overflows a part of the emulsion. At the same time, the pressure relay 7 converts the pressure signal into an electric signal to control the two- position two-way electromagnetic valve 8 and the two-position four-way electromagnetic valve 10 to be electrically powered, so as to connect the oil path of the internal chamber of the hydrau- lic prop 1 and a piston chamber of the rock spallation device 11.
High pressure liquid then enters the piston chamber of the rock spallation device 11, pushing its piston rod downwards for rock spallation.
When the first wave of impact ends, the pressure in the in- ternal chamber of the hydraulic prop 1 gradually decreases. The safety valve 6 stops overflowing, and the pressure relay 7 resumes the initial state. The two-position two-way electromagnetic valve 8 and the two-position four-way electromagnetic valve 10 lose pow- er. The internal chamber of the hydraulic prop 1 forms a closed circuit with the oil path of the piston cavity of the rock spalla- tion device 11, and the hydraulic prop 1 resumes the normal sup- port state again.
The support-spallation integrated system for preventing dam- age of a surrounding rock of a roadway by rock burst in the pre- sent embodiment can endure multiple sudden impacts of pressure, and spallation is not stopped until the piston rod in the rock spallation device 11 reaches the maximum stroke displacement. At this time, the liquid injection handle is continuously injected into the rod cavity of the rock spallation device 11 via the check valve 4 for return stroke. The system of this embodiment releases excess stress in the rock mass while relieving pressure to protect the prop, thereby maintaining the safety of the entire support system.
The principles and implementations of the present invention have been set forth in this specification using specific examples.
The foregoing embodiments have been set forth only to aid in the understanding of the methods and key concepts of the invention. At the same time, those of ordinary skill in the art will appreciate that many changes can be made in the specific embodiments and ap- plication ranges according to the conceptions of the present in- vention.
In view of the foregoing contents, this description should not be construed as limiting the invention.

Claims (9)

CONCLUSIESCONCLUSIONS 1. Geïntegreerd systeem voor ondersteuning en spallatie voor het voorkomen van beschadiging van een omringend gesteente van een rijweg door steenslag, met het kenmerk, dat het een ondersteu- ningssysteem en een spallatiesysteem omvat, waarbij een interne kamer van een hydraulische stut van het ondersteuningssysteem via elektromagnetische kleppen in verbinding staat met een apparaat voor het splijten van rotsen van het spallatiesysteem.An integrated support and spallation system for preventing damage to a surrounding rock of a roadway by crushed stone, characterized in that it comprises a support system and a spallation system, wherein an internal chamber of a hydraulic strut of the support system is connected via solenoid valves communicates with a rock splitting device of the spallation system. 2. Geïntegreerd systeem voor ondersteuning en spallatie voor het voorkomen van beschadiging van een omringend gesteente van een rijweg door steenslag volgens conclusie 1, met het kenmerk, dat een interne kamer van de hydraulische stut in verbinding staat met een olietank via een hydraulische pomp, en een terugslagklep die naar de interne kamer stroomt, is aangebracht op een pijpleiding van de hydraulische pomp en de interne kamer.An integrated support and spallation system for preventing damage to a surrounding rock of a roadway by crushed stone according to claim 1, characterized in that an internal chamber of the hydraulic strut communicates with an oil tank through a hydraulic pump, and a check valve flowing to the internal chamber is arranged on a pipeline of the hydraulic pump and the internal chamber. 3. Geïntegreerd systeem voor ondersteuning en spallatie voor het voorkomen van beschadiging van een omringend gesteente van een rijweg door steenslag volgens conclusie 2, met het kenmerk, dat een losklep en een veiligheidsklep zijn verbonden met de interne kamer van de hydraulische stut, oliepaden waar de losklep en de veiligheidsklep zich bevinden parallel zijn geschakeld en de te- rugslagklep, de losklep en de veiligheidsklep zijn geïntegreerd in een driewegklep.An integrated support and spallation system for preventing damage to a surrounding rock of a roadway by crushed stone according to claim 2, characterized in that a release valve and a safety valve are connected to the internal chamber of the hydraulic strut, oil paths where the release valve and the safety valve are connected in parallel and the non-return valve, the release valve and the safety valve are integrated in a three-way valve. 4. Geïntegreerd systeem voor ondersteuning en spallatie voor het voorkomen van beschadiging van een omringend gesteente van een rijweg door steenslag volgens conclusie 1, met het kenmerk, dat de elektromagnetische kleppen bestaan uit een twee-weg elektromagne- tische klep met twee posities en een vier-weg elektromagnetische klep met twee posities, en een drukrelais is aangebracht tussen de twee-weg elektromagnetische klep met twee posities en de interne kamer van de hydraulische stut.An integrated support and spallation system for preventing damage to a surrounding rock of a roadway by crushed stone according to claim 1, characterized in that the solenoid valves consist of a two-way, two-position solenoid valve and a four-way solenoid valve. two-way two-position solenoid valve, and a pressure relay is provided between the two-way two-position solenoid valve and the internal chamber of the hydraulic strut. 5. Geintegreerd systeem voor ondersteuning en spallatie voor het voorkomen van beschadiging van een omringend gesteente van een rijweg door steenslag volgens conclusie 1, met het kenmerk, dat een vier-weg elektromagnetische klep met twee posities is aange- bracht tussen de zuigerholte, de stangholte en de olietank van het apparaat voor het splijten van rotsen.An integrated support and spallation system for preventing damage to a surrounding rock of a roadway by stone chips according to claim 1, characterized in that a four-way, two-position solenoid valve is provided between the piston cavity, the rod cavity and the oil tank of the rock splitting device. 6. Geïntegreerd systeem voor ondersteuning en spallatie voor het voorkomen van beschadiging van een omringend gesteente van een rijweg door steenslag volgens conclusie 5, met het kenmerk, dat de vierweg elektromagnetische klep met twee posities in verbinding staat met de tweeweg elektromagnetische klep met twee posities via een pijpleiding, waarbij de pijpleiding is voorzien van een aftak- king, en de aftakking in verbinding staat met de terugslagklep die achtereenvolgens naar de stangholte, de hydraulische pomp en de olietank stroomt.6. An integrated support and spallation system for preventing damage to a surrounding rock of a roadway by crushed stone according to claim 5, wherein the four-way two-position solenoid valve communicates with the two-way two-position solenoid valve via a pipeline, wherein the pipeline is provided with a branch, and the branch communicates with the check valve which flows successively to the rod pocket, the hydraulic pump and the oil tank. 7. Geïntegreerd systeem voor ondersteuning en spallatie voor het voorkomen van beschadiging van een omringend gesteente van een rijweg door steenslag volgens conclusie 1, met het kenmerk, dat een cilinderlichaam van de hydraulische stut een behuizing, een basis en een leiding omvat, waarbij een onderste uiteinde van de behuizing als een huls op de basis is geplaatst, waarbij tussen de behuizing en de basis een afdichtend element is aangebracht, aan de basis een doorgaand gat in verbinding met de interne kamer is aangebracht, waarbij een buitenste uiteinde van het doorgaande gat is voorzien van een ringvormige groef, waarbij de leiding door de behuizing gaat en in schroefdraadverbinding staat met het buiten- ste uiteinde van het doorgaande gat, en waarbij de leiding wordt gebruikt voor het verbinden van een pijpleiding in comunicatie met de tweeweg elektromagnetische klep met twee posities.7. An integrated support and spallation system for preventing damage to a surrounding rock of a roadway by crushed stone according to claim 1, wherein a cylinder body of the hydraulic strut comprises a housing, a base and a conduit, wherein a lower end of the housing is placed on the base as a sleeve, with a sealing element arranged between the housing and the base, a through-hole in communication with the internal chamber is provided at the base, an outer end of the through-hole being provided with an annular groove, with the conduit passing through the housing and in threaded connection with the outer end of the through hole, and with the conduit used for connecting a pipeline in communication with the two-way, two-position solenoid valve . 8. Geïntegreerd systeem voor ondersteuning en spallatie voor het voorkomen van beschadiging van een omringend gesteente van een rijweg door steenslag volgens conclusie 7, met het kenmerk, dat het afdichtelement een afdichtring en een afdichtstrip van staal- draadcomposiet omvat, waarbij de basis is voorzien van een boven-An integrated support and spallation system for preventing damage to a surrounding rock of a roadway by crushed stone according to claim 7, characterized in that the sealing element comprises a sealing ring and a steel wire composite sealing strip, the base comprising an upper ste afdichtende groef en een onderste afdichtende groef, waarbij een bovenste uiteinde van de basis is voorzien van de afdichtring en een onderste uiteinde van de basis is voorzien van de afdicht- strip van staaldraadcomposiet.a th sealing groove and a lower sealing groove, wherein an upper end of the base is provided with the sealing ring and a lower end of the base is provided with the steel wire composite sealing strip. 9. Geïntegreerd systeem voor ondersteuning en spallatie voor het voorkomen van beschadiging van een omringend gesteente van een rijweg door steenslag volgens conclusie 7, met het kenmerk, dat een verbindingsuiteinde van de leiding een getrapt gat is, waarbij een afdichtende groef is aangebracht op een getrapt oppervlak van het getrapte gat, en een afdichtende ring is aangebracht tussen de afdichtende groef en een buitenste eindoppervlak van het doorgaan- de gat.9. An integrated support and spallation system for preventing damage to a surrounding rock of a roadway by crushed stone according to claim 7, wherein a connection end of the conduit is a stepped hole with a sealing groove formed on a stepped surface of the stepped hole, and a sealing ring is provided between the sealing groove and an outer end surface of the through hole.
NL2030437A 2022-01-05 2022-01-05 Support-spallation integrated system for preventing damage of surrounding rock of roadway by rock burst NL2030437B1 (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1590556A1 (en) * 1988-02-15 1990-09-07 Предприятие П/Я А-1922 Thust prop
US20060213363A1 (en) * 2003-05-08 2006-09-28 Michael Dettmers Valve for hydraulic props of shield-type support frames, and shield-type support frame
CN105041350B (en) * 2015-06-02 2017-05-17 辽宁工程技术大学 Hydraulic prop having anchoring force energy-absorbing buffering function
CN105909294B (en) * 2016-07-02 2018-03-23 山东科技大学 A kind of hydraulic support and its method of work for possessing pose Detection ＆ Controling function
CN104747221B (en) * 2015-01-16 2018-08-28 北京煤科天玛自动化科技有限公司 A kind of coal-mine hydraulic support moves frame intelligent control method automatically
CN110593920B (en) * 2019-10-08 2020-11-24 河南工程学院 Temporary anti-impact supporting device capable of absorbing blasting vibration energy in driving roadway
WO2021212829A1 (en) * 2020-04-22 2021-10-28 山东科技大学 Buffer-type support device for a mine and support method
CN114109459A (en) * 2021-11-23 2022-03-01 辽宁工程技术大学 Anti-impact danger-relieving roadway support-surrounding rock spalling integrated system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1590556A1 (en) * 1988-02-15 1990-09-07 Предприятие П/Я А-1922 Thust prop
US20060213363A1 (en) * 2003-05-08 2006-09-28 Michael Dettmers Valve for hydraulic props of shield-type support frames, and shield-type support frame
CN104747221B (en) * 2015-01-16 2018-08-28 北京煤科天玛自动化科技有限公司 A kind of coal-mine hydraulic support moves frame intelligent control method automatically
CN105041350B (en) * 2015-06-02 2017-05-17 辽宁工程技术大学 Hydraulic prop having anchoring force energy-absorbing buffering function
CN105909294B (en) * 2016-07-02 2018-03-23 山东科技大学 A kind of hydraulic support and its method of work for possessing pose Detection ＆ Controling function
CN110593920B (en) * 2019-10-08 2020-11-24 河南工程学院 Temporary anti-impact supporting device capable of absorbing blasting vibration energy in driving roadway
WO2021212829A1 (en) * 2020-04-22 2021-10-28 山东科技大学 Buffer-type support device for a mine and support method
CN114109459A (en) * 2021-11-23 2022-03-01 辽宁工程技术大学 Anti-impact danger-relieving roadway support-surrounding rock spalling integrated system

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