CN116658227A - Replacement method of submerged hydraulic support top beam - Google Patents

Replacement method of submerged hydraulic support top beam Download PDF

Info

Publication number
CN116658227A
CN116658227A CN202310856227.5A CN202310856227A CN116658227A CN 116658227 A CN116658227 A CN 116658227A CN 202310856227 A CN202310856227 A CN 202310856227A CN 116658227 A CN116658227 A CN 116658227A
Authority
CN
China
Prior art keywords
hydraulic support
top beam
replacing
construction section
chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310856227.5A
Other languages
Chinese (zh)
Inventor
刘晋升
杨跃辉
王景海
秦坤鹏
王忠哲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dalai Nur Coal Industry Co Ltd
Original Assignee
Dalai Nur Coal Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dalai Nur Coal Industry Co Ltd filed Critical Dalai Nur Coal Industry Co Ltd
Priority to CN202310856227.5A priority Critical patent/CN116658227A/en
Publication of CN116658227A publication Critical patent/CN116658227A/en
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/14—Lining predominantly with metal
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D13/00—Large underground chambers; Methods or apparatus for making them
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00—Setting anchoring-bolts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

The invention provides a method for replacing a top beam of an underground hydraulic support, which comprises the following steps: a replacement top beam chamber is arranged on a coal wall in front of a hydraulic support, the replacement top beam chamber comprises a first construction section and a second construction section, a double-layer net is hung on the top of the first construction section, a plurality of I-steel beams are hung in the first construction section and the second construction section by utilizing anchor rods and anchor ropes for combined support, a point column is arranged below each I-steel beam for supporting the I-steel beam, the height of the hydraulic support is reduced, pipelines of the hydraulic support are detached, the hydraulic support is moved to the replacement top beam chamber, the damaged top beam is removed, the top beam is transported out by utilizing a scraper conveyor, after a new top beam is installed, the hydraulic support is moved to a position below the top beam, the pipelines of the hydraulic support are restored, the height of the hydraulic support is raised until the hydraulic support contacts with the top beam, and the working state of the hydraulic support is confirmed. The replacing method of the submerged hydraulic support top beam has the advantages of convenience in construction and good safety.

Description

Replacement method of submerged hydraulic support top beam
Technical Field
The invention relates to the technical field of coal mine equipment, in particular to a method for replacing a top beam of an underground hydraulic support.
Background
With the development of coal mining technology, the hydraulic support becomes indispensable equipment in coal mining, and guarantees are provided for realizing mechanized comprehensive mining of a working face, so that the safe use of the hydraulic support is an important guarantee for coal mining.
The hydraulic support of the fully mechanized mining face has uneven stress and overlarge local pressure, so that lugs on two sides above a large column are damaged, and a top beam is cracked, thereby bringing potential safety hazard to normal production. In the related art, the replacement process of large-scale accessories is more in number of people, long in replacement time, and the replacement technical efficiency is at the bottom, and the safety and the efficiency of operators can not meet the replacement requirement.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, the embodiment of the invention provides a method for replacing the submerged hydraulic support top beam, which has the advantages of convenient construction and good safety.
The replacing method of the submerged hydraulic support top beam comprises the following steps:
s1, a top beam replacement chamber is formed in the front coal wall of a hydraulic support;
s2, a top beam replacement chamber comprises a first construction section and a second construction section, a double-layer net is hung at the top of the first construction section, a plurality of I-steel beams are hung in the first construction section along the length direction of the top beam replacement chamber by utilizing anchor rods and anchor ropes for combined support, the distance between two adjacent I-steel beams is less than or equal to 0.5 meter, and a spot column is arranged below each I-steel beam to support the I-steel beam;
s3, hanging a double-layer net on the top of the second construction section, and supporting by utilizing the anchor rods and anchor cables in a combined mode, hanging a plurality of I-steel in the second construction section along the length direction of the replacement top beam chamber, wherein the distance between two adjacent I-steel is less than or equal to 1 meter, and dotting columns are arranged below each I-steel to support the I-steel;
s4, reducing the height of the hydraulic support, disassembling all pipelines of the hydraulic support, and then moving the hydraulic support to a top beam replacement chamber;
s5, removing the damaged top beam, and transporting out by using a scraper conveyor;
s6, after a new top beam is installed, moving the hydraulic support to a position below the top beam, recovering pipelines of each path of the hydraulic support, and lifting the hydraulic support to be high until the hydraulic support contacts with the top beam;
s7, confirming the working state of the hydraulic support.
According to the method for replacing the roof beam of the submerged hydraulic support, the replacing roof beam chamber is formed in front of the hydraulic support, and the replacing roof beam chamber is supported, so that not only is enough construction space provided for moving the hydraulic support and replacing the roof beam, but also the strength of the coal wall in and around the replacing roof beam chamber is ensured, the risk of roof plate falling during roof beam replacement is reduced, and the safety during production operation is improved.
Therefore, the replacing method of the submerged hydraulic support top beam has the advantages of convenience in construction and good safety.
In some embodiments, the length of the first construction section is less than the length of the second construction section.
In some embodiments, the method further comprises the step of:
before step S2, repairing and beating a plurality of anchor cables on the top of the working surface between the hydraulic support and the top beam replacement chamber.
In some embodiments, the method further comprises the step of:
before step S2, anchor rods are additionally arranged on two sides of the coal walls of the opening of the top beam chamber.
In some embodiments, the distance between the anchor rods on the coal walls on both sides of the replacement roof header chamber opening and the replacement roof header chamber opening is greater than or equal to 300 millimeters.
In some embodiments, the method further comprises the steps of:
in step S2, the hanging of the double-layer mesh includes mesh-to-mesh butt joint, and the butt joint positions of the upper and lower layers of meshes are staggered.
In some embodiments, the length of the junction between the upper and lower layers of mesh is greater than or equal to 100 millimeters.
In some embodiments, the method further comprises the steps of:
in step S2 and step S3, the gas condition of the work site is detected in real time.
In some embodiments, the method further comprises the steps of:
after step S4 and before step S5, a wood pile is erected under the tail boom of the hydraulic support to support the shield and tail beams.
In some embodiments, the method further comprises the steps of:
and (3) erecting pi-shaped steel beams on two sides of the top beam of the hydraulic support after the step S4 and before the step S5.
Drawings
FIG. 1 is a block flow diagram of a method of replacing a roof rail of an understory hydraulic mount according to an embodiment of the present invention.
Fig. 2 is a schematic top view of a usage scenario of a method for replacing a roof beam of an under-mine hydraulic support according to an embodiment of the present invention.
Fig. 3 is a schematic top view of a roof rail replacement chamber in a method for replacing a roof rail of an under-mine hydraulic support according to an embodiment of the present invention.
Reference numerals:
a hydraulic mount 100;
replacing the roof rail chamber 200;
a metal mesh 300;
i-steel 400;
a work surface 500.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
As shown in fig. 1, the method for replacing the roof beam of the submerged hydraulic support according to the embodiment of the invention comprises the following steps:
s1, a top beam replacement chamber 200 is formed in the front coal wall of the hydraulic support 100. As shown in fig. 2 and 3, it will be appreciated that replacement header chamber 200 extends away from hydraulic mount 100, and that replacement header chamber 200 has a length, width, and height that are each greater than the length, width, and height of one hydraulic mount 100, such that hydraulic mount 100 can be moved to replacement header chamber 200 to facilitate replacement of the header of hydraulic mount 100. Preferably, the centerline of the replacement header chamber 200 corresponds to the neutral position of the hydraulic bracket 100.
Further, a plurality of anchor lines are additionally installed on the top of the working surface 500 between the hydraulic support 100 and the roof beam replacement chamber 200, and the anchor lines are arranged at intervals along the extending direction of the roadway.
Further, anchor rods are additionally arranged on two side coal walls of the opening of the top beam changing chamber 200, namely, the external structural strength of the top beam changing chamber 200 is further enhanced. Preferably, the distance between the anchor rods on the two side coal walls of the opening of the replacement roof rail chamber 200 and the opening of the replacement roof rail chamber 200 is 300 mm or more.
Preferably, the hydraulic support 100 below the damaged top beam and the mining height of two adjacent hydraulic supports of the hydraulic support 100 are required to be more than or equal to 3.7 meters, so that coal cutting of a unit is facilitated to pass through the top beam replacement chamber 200, reinforcement support above the top beam replacement chamber 200 is prevented from being damaged, and meanwhile stability of top coal and coal sides around the top beam replacement chamber 200 can be ensured.
S2, the top beam replacement chamber 200 comprises a first construction section and a second construction section, a double-layer net is hung at the top of the first construction section, a plurality of I-beams 400 are hung in the first construction section along the length direction of the top beam replacement chamber 200 by using anchor rods and anchor ropes for combined support, the distance between two adjacent I-beams 400 is less than or equal to 0.5 meter, and a point column is punched below each I-beam 400 to support the I-beam 400.
It will be appreciated that in the shallow to deep replacement of the roof rail chamber 200, as shown in fig. 2 and 3, the distance between the first construction site and the hydraulic support 100 is small, and the support and support in the first construction site plays a critical role in the roof of the coal mine at the top of the hydraulic support 100, and therefore, the support requirements in the first construction site are high. Thus, preferably, in the first construction section, a plurality of I-bars 400 extend along the length of the replacement roof rail chamber 200, with the distance between two adjacent I-bars 400 (i.e., the distance between two I-bars in the fore-aft direction) being 0.5 meters, and the length of the I-bars 400 being greater than the width of the replacement roof rail chamber 200.
S3, hanging a double-layer net on the top of the second construction section, and supporting by combining anchor rods and anchor cables, hanging a plurality of I-steel 400 in the second construction section along the length direction of the replacement top beam chamber 200, wherein the distance between two adjacent I-steel 400 is less than or equal to 1 meter, and dotting columns below each I-steel 400 to support the I-steel 400.
It will be appreciated that since the second construction site is far from the hydraulic mount 100 as compared to the first construction site, the supporting action and effect in the second construction site is slightly weaker than the supporting action and effect in the first construction site, as shown in fig. 2 and 3, whereby it is preferable to secure a distance of 1 meter between the adjacent two i-beams 400 in the second construction site.
Preferably, the length of the first construction section is less than the length of the second construction section. That is, the first construction section has a great influence on the structural strength of the top coal mine of the hydraulic support 100, and the supporting strength of the first construction section needs to be ensured, and the excessive supporting is easily caused by the excessively long length of the first construction section, so that the construction amount is increased, and the construction efficiency is reduced.
It can be understood that in the construction process of replacing the top beam chamber 200, the double nets are hung in time along with the feeding of the roof beam chamber, and anchor ropes and anchor rods are beaten, and each cycle is fed for 1m, so that the construction is carried out piece by piece, and the integral supporting strength is ensured.
After the double nets are hung on the top of the first construction section, a plurality of anchor cables are adopted for fixing, preferably, the space between the anchor cables is 800 mm, the row distance is 500 mm, after the double nets are hung on the top of the second construction section, the space between the anchor cables is 800 mm, and the row distance is 1000 mm, wherein the number of the anchor cables of the first construction section is more than that of the anchor cables of the second construction section.
Optionally, the cable specification can adopt a steel strand with the diameter of 15.24 mm as the cable, the length is 6300 mm, and the cable tray can adopt a 20# channel steel supporting plate, the thickness is 20 mm and the length is 280 mm.
The roof in the second construction section adopts anchor rods and reinforcing steel bars for supporting, the distance is 800 mm, and the row distance is 1000 mm. Preferably, a plurality of anchor rods are respectively arranged on two side walls of the second construction section, and the number of the anchor rods on each side wall is more than or equal to 3.
Alternatively, the anchor rod specification can be a left-handed equal-strength resin anchor rod with the diameter of 18 mm multiplied by 2100mm, and the anchor rod tray specification can be a D140 mm multiplied by 8 mm circular tray.
The double-net comprises two metal nets 300, an overlapped part is arranged between the two metal nets 300, the metal nets 300 can be made of iron wires, the nets can be connected by three buckles, and the binding wires can be made of 14# iron wires, so that the connection between the nets is firm.
S4, the height of the hydraulic support 100 is reduced, all pipelines of the hydraulic support 100 are disassembled, and then the hydraulic support 100 is moved to the top beam replacement chamber 200.
Further, a wooden buttress is erected under the tail boom of the hydraulic support 100 to support the shield and tail beams.
Further, pi-shaped steel beams are erected on both sides of the top beam of the hydraulic support 100.
That is, the built-up timber stacks and pi-steel beams can form a common supporting effect with the original support of the top of the hydraulic support 100 to better form a working space for replacing the roof beam.
And S5, removing the damaged top beam, and transporting out by using a scraper conveyor. It can be understood that when the damaged top beam is dismantled, the connecting pin of the top beam and the shield beam needs to be dismantled firstly so as to decompose the top beam and the shield beam, and then the connecting pin of the top beam and the large column is carried out, so that the top beam is dismantled, and the dismantled top beam can be transported out by a scraper.
And S6, after a new top beam is installed, the hydraulic support 100 is moved to a position below the top beam, all lines of the hydraulic support 100 are restored, and the hydraulic support 100 is lifted up until the hydraulic support is in contact with the top beam.
It should be noted that, the new top beam may be installed by using a plurality of manual hoists, i.e., the plurality of manual hoists are divided into two groups, each group includes two manual hoists, and the two groups of manual hoists are respectively located on the front beam and the tail beam of the hydraulic support 100. When the chain is used, the two manual hoist chains positioned on the tail beam are pulled to enable the top beam to move to the butt joint position, meanwhile, the two manual hoist chain on the front beam is firmly locked, the zipper and the chain loosening work must be uniform in speed, the speed is kept consistent, and the butt joint work can be carried out.
And S7, confirming the working state of the hydraulic support 100. It will be appreciated that when the hydraulic mount 100 is restored to its original position, the strength of the support of the hydraulic mount 100 is checked, the connection state of each pipeline is checked, and after confirmation, the production can be restored.
Further, it is preferable to detect the gas condition of the job site in real time. It can be understood that when the roof beam chamber 200 is replaced, the gas condition of the operation site should be detected in real time until the roof beam replacement is finished, so that the construction operation can be performed under the condition that the gas concentration is allowed, and the construction safety of constructors is ensured at any time.
According to the method for replacing the roof beam of the submerged hydraulic support, the roof beam replacing chamber 200 is arranged in front of the hydraulic support 100, and the roof beam replacing chamber 200 is supported, so that not only is enough construction space provided for moving the hydraulic support 100 and replacing the roof beam, but also the strength of coal walls in and around the roof beam replacing chamber 200 is ensured, the risk of roof falling when the roof beam is replaced is reduced, and the safety in production operation is improved.
That is, the method for replacing the top beam of the submerged hydraulic support in the embodiment of the invention makes full preparation before replacing the top beam, namely, the replacement top beam chamber 200 is opened in sections, the replacement top beam chamber 200 is reinforced by hanging the net step by step along with rice feeding, the reinforcement is also carried out on the top of the opening of the replacement top beam chamber 200 and the side coal wall, and the scraper conveyor is utilized to convey materials, so that the replacement difficulty is greatly increased, the workload is reduced, the production stopping time is shortened, and good safety and economic benefits are realized.
Therefore, the replacing method of the submerged hydraulic support top beam has the advantages of convenience in construction and good safety.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the invention.

Claims (10)

1. The method for replacing the roof beam of the submerged hydraulic support is characterized by comprising the following steps of:
s1, a top beam replacement chamber is formed in the front coal wall of a hydraulic support;
s2, a top beam replacement chamber comprises a first construction section and a second construction section, a double-layer net is hung at the top of the first construction section, a plurality of I-steel beams are hung in the first construction section along the length direction of the top beam replacement chamber by utilizing anchor rods and anchor ropes for combined support, the distance between two adjacent I-steel beams is less than or equal to 0.5 meter, and a spot column is arranged below each I-steel beam to support the I-steel beam;
s3, hanging a double-layer net on the top of the second construction section, and supporting by utilizing the anchor rods and anchor cables in a combined mode, hanging a plurality of I-steel in the second construction section along the length direction of the replacement top beam chamber, wherein the distance between two adjacent I-steel is less than or equal to 1 meter, and dotting columns are arranged below each I-steel to support the I-steel;
s4, reducing the height of the hydraulic support, disassembling all pipelines of the hydraulic support, and then moving the hydraulic support to a top beam replacement chamber;
s5, removing the damaged top beam, and transporting out by using a scraper conveyor;
s6, after a new top beam is installed, moving the hydraulic support to a position below the top beam, recovering pipelines of each path of the hydraulic support, and lifting the hydraulic support to be high until the hydraulic support contacts with the top beam;
s7, confirming the working state of the hydraulic support.
2. The method of replacing a roof rail of an understory hydraulic support of claim 1 wherein the length of the first construction section is less than the length of the second construction section.
3. The method of replacing a roof rail of an understory hydraulic support of claim 1, further comprising the steps of:
before step S2, repairing and beating a plurality of anchor cables on the top of the working surface between the hydraulic support and the top beam replacement chamber.
4. The method of replacing a roof rail of an understory hydraulic support of claim 1, further comprising the steps of:
before step S2, anchor rods are additionally arranged on two sides of the coal walls of the opening of the top beam chamber.
5. The method of replacing a roof beam of an understory hydraulic support of claim 4 wherein the distance between the anchors on the coal walls on both sides of the opening of the replacement roof beam chamber and the opening of the replacement roof beam chamber is 300 mm or more.
6. The method of replacing a roof rail of an understory hydraulic support of claim 1, further comprising the steps of:
in step S2, the hanging of the double-layer mesh includes mesh-to-mesh butt joint, and the butt joint positions of the upper and lower layers of meshes are staggered.
7. The method of replacing a roof beam of an understory hydraulic support according to claim 6, wherein the length of the junction between the upper and lower layers of mesh is 100mm or more.
8. The method of replacing a roof rail of an understory hydraulic support of claim 1, further comprising the steps of:
in step S2 and step S3, the gas condition of the work site is detected in real time.
9. The method of replacing a roof rail of an understory hydraulic support of claim 1, further comprising the steps of:
after step S4 and before step S5, a wood pile is erected under the tail boom of the hydraulic support to support the shield and tail beams.
10. The method of replacing a roof rail of an understory hydraulic support of claim 9, further comprising the steps of:
and (3) erecting pi-shaped steel beams on two sides of the top beam of the hydraulic support after the step S4 and before the step S5.
CN202310856227.5A 2023-07-13 2023-07-13 Replacement method of submerged hydraulic support top beam Pending CN116658227A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310856227.5A CN116658227A (en) 2023-07-13 2023-07-13 Replacement method of submerged hydraulic support top beam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310856227.5A CN116658227A (en) 2023-07-13 2023-07-13 Replacement method of submerged hydraulic support top beam

Publications (1)

Publication Number Publication Date
CN116658227A true CN116658227A (en) 2023-08-29

Family

ID=87728161

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310856227.5A Pending CN116658227A (en) 2023-07-13 2023-07-13 Replacement method of submerged hydraulic support top beam

Country Status (1)

Country Link
CN (1) CN116658227A (en)

Similar Documents

Publication Publication Date Title
CN101614125B (en) Construction method of V-level surrounding rock tunnel
CN110847156A (en) Steel reinforcement cage suitable for underground diaphragm wall of air shaft and use method
CN106284089B (en) A kind of steel trestle rapid constructing method
CN106677787A (en) Vertical shaft restoration and reinforcement structure and restoration and reinforcement construction method
CN102777182B (en) Rapid end extracting method of large mining height working face
CN112727539B (en) Construction method for filling false roof by using shrinkable mesh material
CN105715064B (en) A kind of repairing and reinforcing method of armored concrete feed bin
CN108868834B (en) Temporary support device for tunnel arch wall primary support intrusion limit arch changing construction
CN109706950B (en) Construction method of underground continuous wall in tunnel
CN112160759A (en) Method for starting and trial tunneling of tunnel shield crossing river
CN107142954B (en) Steel hanging box lifting system for integral lifting and lifting method thereof
CN108301332A (en) The detachable steel trestle construction method of beret slice
CN105672690B (en) Load bearing wall reinforcing method
CN110159316B (en) Device and method for pocket filling roof protection of large-section ultra-high stope roadway
CN116658227A (en) Replacement method of submerged hydraulic support top beam
CN211422666U (en) Supporting structure for excavation of side slope at inlet and outlet of diversion water delivery tunnel
CN107700490A (en) Gunite concrete makes up constructing structure and its construction method in advance between the stratum stake of sand ovum
CN216739582U (en) Multifunctional auxiliary device for binding reinforcing steel bars of slide-resistant piles
CN106836242B (en) Deep foundation pit anchor cable tensioning assembly type operation platform
CN214887129U (en) Large coal bunker of vertical shaft in mining area
CN213574101U (en) Wall caving prevention supporting structure for stoping roadway of fractured developing coal bed
CN106150171B (en) Formwork support platform and its application inside a kind of reinforced concrete silo
CN211621667U (en) Tubular pile cushion cap girder steel rail mounted tower machine walking foundation structure
CN107859532A (en) It is a kind of to run through closely the discarded shaft of vertical well processing method of coal seam stope up and down
CN206917262U (en) A kind of stiffness steel beam bearing of convenient unloading

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination