CN110030026A - A kind of scalable roadway support arch and its operating method - Google Patents
A kind of scalable roadway support arch and its operating method Download PDFInfo
- Publication number
- CN110030026A CN110030026A CN201910429495.2A CN201910429495A CN110030026A CN 110030026 A CN110030026 A CN 110030026A CN 201910429495 A CN201910429495 A CN 201910429495A CN 110030026 A CN110030026 A CN 110030026A
- Authority
- CN
- China
- Prior art keywords
- arch
- vertical
- hinged
- hydraulic cylinder
- seat
- 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
Links
- 238000011017 operating method Methods 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 6
- 210000005069 ears Anatomy 0.000 claims description 9
- 238000003032 molecular docking Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 7
- 230000001681 protective effect Effects 0.000 abstract description 3
- 239000011435 rock Substances 0.000 abstract description 3
- 238000005065 mining Methods 0.000 description 4
- 101150097977 arch-1 gene Proteins 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
- E21D23/0409—Aligning or guiding means for the supports or for the constitutive parts of the supports
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
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)
- Architecture (AREA)
- Structural Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a kind of scalable roadway support arch and its operating methods, including arch, transversal stretching hydraulic cylinder and vertical telescopic hydraulic cylinder, arch is provided with the segmental arc at top and two vertical sections hinged with segmental arc both ends of two sides, segmental arc and vertical section are stretching structure, and drive it flexible by transversal stretching hydraulic tube and vertical telescopic hydraulic cylinder respectively.It is flexible that arch of the invention can be realized vertical and horizontal; convenient for the transport in underworkings; and it is also convenient for the use in different size tunnel; it can realize to maximum magnitude the covering of staff's work surface of driving face; play better protective effect; it is higher to carry out supporting operational security, avoids staff from encountering the danger such as wall caving, roof fall, coal breakage, falling rocks in Bracing Process, also has the characteristics that structure is simple, cheap and easy to operate.
Description
Technical field
The present invention relates to a kind of scalable roadway support arch and its operating methods, belong to roadway support arch technology neck
Domain.
Background technique
In the very long long korneforos of the mankind, the practice of Mining of the mankind also be experienced by by hand to mechanical, by rudimentary to advanced, be opened
It is increasing to adopt scale, production technology is higher and higher.For supporting field, hydraulic support is the most extensive, it is mating with coalcutter
It uses, realizes coal mining comprehensive mechanization, solve the contradiction that roof control in mechanical coal mining work lags behind coal work, it is maximum
The life security of limit guarantee coal miner.Similarly, if also there is similar protective cradle in driving face, that driving face
Staff it is just relatively safe, however practical there is no such brackets.In order to reduce driving face staff
Risk.
Currently, the synthesis based on hydraulic support adopts equipment gradually to program-controlled, remote control and automation direction development.So
And the supporting of heading end is still a big problem, and worker is needed to carry out supporting under conditions of abnormally dangerous, and face at any time
Face the danger such as wall caving, roof fall, coal breakage, falling rocks；Meanwhile with the intensification of mining depth, heading end supporting is by stress influence branch
Shield is more difficult, and the supporting worker of heading end is more dangerous.
Summary of the invention
The technical problem to be solved by the present invention is a kind of scalable roadway support arch and its operating method are provided, with solution
Certainly problems of the prior art.
The technical scheme adopted by the invention is as follows: a kind of scalable roadway support arch, including arch, transversal stretching hydraulic cylinder
With vertical telescopic hydraulic cylinder, arch is provided with the segmental arc at top and two vertical sections hinged with segmental arc both ends of two sides, arc
Shape section and vertical section are stretching structure, and drive it flexible by transversal stretching hydraulic tube and vertical telescopic hydraulic cylinder respectively.
Preferably, above-mentioned two side bottom of arch is provided with idler wheel, and idler wheel is placed in concave tracks.
Preferably, above-mentioned further includes movable motor, sprocket wheel and chain, and movable motor is fixedly connected on development machine, sprocket wheel
It is fixedly connected on the output shaft of movable motor, on sprocket wheel, the other end is removably articulated on arch chain one ends wound.
Preferably, promising two sections of docking structures are set in the middle part of above-mentioned segmental arc, ears are set at one section of docking, another section right
Place's setting monaural is connect, monaural is inserted into ears and locks by bolt one, and it is water that bolt one, which passes through through-hole on monaural and ears,
Flat strip through-hole, the lateral lever of transversal stretching hydraulic cylinder, which is hinged on, to be laterally hinged on seat one, the transverse direction of transversal stretching hydraulic cylinder
Cylinder seat, which is hinged on, to be laterally hinged on seat two, is laterally hinged with seat one and is laterally hinged with seat two and is respectively fixedly connected at two sections of segmental arc
On.
Preferably, two sections of socket structures are set as in the middle part of above-mentioned vertical section, upper section is inserted into lower section and by bolt two
Locking, is provided with multiple equidistant installation through-holes of installation bolt two on upper section and lower section, vertical telescopic hydraulic cylinder it is vertical
Lever is hinged on vertical hinged seat one, and the vertical cylinder seat of vertical telescopic hydraulic cylinder is hinged on vertical hinged seat two, vertical to cut with scissors
Joint chair one and vertical hinged seat two are respectively fixedly connected on upper section and lower section.
A kind of operating method of scalable roadway support arch, method includes the following steps:
Step 1: arch is transported to heading end by the transporting equipment by underground, concave tracks are laid, by a series of arches
Steel plate assemble, be seated in concave tracks, and transversal stretching hydraulic cylinder and vertical telescopic hydraulic cylinder are installed to arch
Segmental arc and vertical section；
Step 2: being connected the movable motor installed on arch and development machine by chain, development machine pushes ahead completion
Afterwards, then chain it is connected to arch, drawn under the tunnel newly tunneled；
Step 3: fixing the position of wheel, controls transversal stretching hydraulic cylinder and longitudinal extension hydraulic cylinder stretches out, give arch two sides
It pressurizes with arc top, expands arch in vertical and horizontal, reach until being adjacent to wall, arch is locked by bolt
Vertical and horizontal stretch position；
Step 4: by preset hole and gap on arch, to tunnel around drilling, then squeeze into anchor pole and reinforced；
Step 5: mobile arch adds anchor net or whitewashing etc. secondary the wall for squeezing into anchor pole to the new position of next driving
It reinforces.
Beneficial effects of the present invention: compared with prior art, arch of the invention can be realized vertical and horizontal and stretch, just
In the transport in underworkings, and it is also convenient for the use in different size tunnel, can realize headwork to maximum magnitude
Better protective effect is played in the covering of staff's work surface in face, and progress supporting operational security is higher, avoids work people
Member encounters the danger such as wall caving, roof fall, coal breakage, falling rocks in Bracing Process, also has structure simple, cheap and easy to operate
Quick feature.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is movable motor junction structural schematic diagram.
Specific embodiment
With reference to the accompanying drawing and the present invention is described further in specific embodiment.
Embodiment 1: as Figure 1-Figure 2, a kind of scalable roadway support arch, including arch 1, transversal stretching hydraulic cylinder
2 and vertical telescopic hydraulic cylinder 3, arch 1 be provided with top segmental arc 5 and two sides with hinged two vertical in 5 both ends of segmental arc
Section 4, segmental arc 5 and vertical section 4 are stretching structure, and are driven respectively by transversal stretching hydraulic tube 2 and vertical telescopic hydraulic cylinder 3
It is flexible to move it.
Preferably, 1 liang of side bottom of above-mentioned arch is provided with idler wheel 6, and idler wheel 6 is placed in concave tracks 7.
Preferably, above-mentioned further includes movable motor 8, sprocket wheel 9 and chain 10, and movable motor 8 is fixedly connected on development machine 11
On, sprocket wheel 9 is fixedly connected on the output shaft of movable motor 8, and 10 one ends wound of chain is on sprocket wheel 9, and the other end is removably
It is articulated on arch 1.
Preferably, promising two sections of docking structures are set in the middle part of above-mentioned segmental arc 5, ears 12 are set at one section of docking, it is another
Monaural 13 is set at section docking, and monaural 13 is inserted into ears 12 and is locked by bolt 1, and bolt 1 passes through monaural 13
It is horizontal strip through-hole with through-hole on ears 12, the lateral lever 23 of transversal stretching hydraulic cylinder 2, which is hinged on, is laterally hinged with seat 1
On, the lateral cylinder seat 16 of transversal stretching hydraulic cylinder 2, which is hinged on, to be laterally hinged on seat 2 17, is laterally hinged with seat 1 and is laterally hinged with
Seat 2 17 is respectively fixedly connected on 5 two sections of segmental arc.
Preferably, two sections of socket structures are set as in the middle part of above-mentioned vertical section 4, upper section is inserted into lower section and by bolt two
18 lock, and multiple equidistant installation through-holes of installation bolt 2 18 are provided on upper section and lower section, vertical telescopic hydraulic cylinder 3
Vertical lever 19 is hinged on vertical hinged seat 1, and the vertical cylinder seat 21 of vertical telescopic hydraulic cylinder 2 is hinged on vertical hinged seat
On 2 22, vertical hinged seat 1: and vertical hinged seat 2 22 is respectively fixedly connected on upper section and lower section.
Embodiment 2: a kind of operating method of scalable roadway support arch, method includes the following steps:
Step 1: arch is transported to heading end by the transporting equipment by underground, concave tracks are laid, by a series of arches
Steel plate assemble, be seated in concave tracks, and transversal stretching hydraulic cylinder and vertical telescopic hydraulic cylinder are installed to arch
Segmental arc and vertical section；
Step 2: being connected the movable motor installed on arch and development machine by chain, development machine pushes ahead completion
Afterwards, then chain it is connected to arch, drawn under the tunnel newly tunneled；
Step 3: fixing the position of wheel, controls transversal stretching hydraulic cylinder and longitudinal extension hydraulic cylinder stretches out, give arch two sides
It pressurizes with arc top, expands arch in vertical and horizontal, reach until being adjacent to wall, arch is locked by bolt
Vertical and horizontal stretch position；
Step 4: by preset hole and gap on arch, to tunnel around drilling, then squeeze into anchor pole and reinforced；
Step 5: mobile arch adds anchor net or whitewashing etc. secondary the wall for squeezing into anchor pole to the new position of next driving
It reinforces.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Within protection scope of the present invention, therefore, protection scope of the present invention should be based on the protection scope of the described claims lid.
Claims (6)
1. a kind of scalable roadway support arch, it is characterised in that: including arch (1), transversal stretching hydraulic cylinder (2) and vertically stretch
Contracting hydraulic cylinder (3), arch (1) are provided with the segmental arc (5) at top and two vertical sections hinged with segmental arc (5) both ends of two sides
(4), segmental arc (5) and vertical section (4) are stretching structure, and pass through transversal stretching hydraulic tube (2) and vertical flexible liquid respectively
Cylinder pressure (3) drives it flexible.
2. a kind of scalable roadway support arch according to claim 1, it is characterised in that: (1) two side bottom of arch is set
It is equipped with idler wheel (6), idler wheel (6) is placed on concave tracks (7).
3. a kind of scalable roadway support arch according to claim 1 or 2, it is characterised in that: further include movable motor
(8), sprocket wheel (9) and chain (10), movable motor (8) are fixedly connected on development machine (11), and sprocket wheel (9) is fixedly connected on walking
On the output shaft of motor (8), on sprocket wheel (9), the other end is removably articulated on arch (1) chain (10) one ends wound.
4. a kind of scalable roadway support arch according to claim 1, it is characterised in that: setting in the middle part of segmental arc (5)
Ears (12) are arranged at one section of docking in promising two sections of docking structures, and monaural (13) are arranged at another section of docking, monaural (13) insertion
It is locked in ears (12) and through bolt one (14), it is level that bolt one (14), which passes through through-hole on monaural (13) and ears (12),
Strip through-hole, the lateral lever (23) of transversal stretching hydraulic cylinder (2), which is hinged on, to be laterally hinged on seat one (15), and transversal stretching is hydraulic
The lateral cylinder seat (16) of cylinder (2), which is hinged on, to be laterally hinged on seat two (17), is laterally hinged with seat one (15) and is laterally hinged with seat two
(17) it is respectively fixedly connected on (5) two sections of segmental arc.
5. a kind of scalable roadway support arch according to claim 1, it is characterised in that: setting in the middle part of vertical section (4)
For two sections of socket structures, upper section is inserted into lower section and is locked by bolt two (18), is provided with installation on upper section and lower section
Multiple equidistant installation through-holes of bolt two (18), the vertical lever (19) of vertical telescopic hydraulic cylinder (3) are hinged on vertical hinged
On one (20) of seat, the vertical cylinder seat (21) of vertical telescopic hydraulic cylinder (2) is hinged on vertical hinged seat two (22), vertical hinged seat
One (20) and vertical hinged seat two (22) are respectively fixedly connected on upper section and lower section.
6. a kind of operating method of scalable roadway support arch according to claim 1, it is characterised in that: this method packet
Include following steps:
Step 1: arch is transported to heading end by the transporting equipment by underground, concave tracks are laid, by a series of arches
Steel plate assemble, be seated in concave tracks, and transversal stretching hydraulic cylinder and vertical telescopic hydraulic cylinder are installed to arch
Segmental arc and vertical section；
Step 2: being connected the movable motor installed on arch and development machine by chain, development machine pushes ahead completion
Afterwards, then chain it is connected to arch, drawn under the tunnel newly tunneled；
Step 3: fixing the position of wheel, controls transversal stretching hydraulic cylinder and longitudinal extension hydraulic cylinder stretches out, give arch two sides
It pressurizes with arc top, expands arch in vertical and horizontal, reach until being adjacent to wall, arch is locked by bolt
Vertical and horizontal stretch position；
Step 4: by preset hole and gap on arch, to tunnel around drilling, then squeeze into anchor pole and reinforced；
Step 5: mobile arch adds anchor net or whitewashing etc. secondary the wall for squeezing into anchor pole to the new position of next driving
It reinforces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910429495.2A CN110030026A (en) | 2019-05-22 | 2019-05-22 | A kind of scalable roadway support arch and its operating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910429495.2A CN110030026A (en) | 2019-05-22 | 2019-05-22 | A kind of scalable roadway support arch and its operating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110030026A true CN110030026A (en) | 2019-07-19 |
Family
ID=67243112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910429495.2A Pending CN110030026A (en) | 2019-05-22 | 2019-05-22 | A kind of scalable roadway support arch and its operating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110030026A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236073A (en) * | 2020-01-13 | 2020-06-05 | 山东职业学院 | A supplementary strutting arrangement of construction for bridge construction |
| CN114753865A (en) * | 2022-04-21 | 2022-07-15 | 福州大学 | Self-adaptive supporting device for roadway caving area and construction method thereof |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2802612A1 (en) * | 1978-01-21 | 1979-10-04 | Ruhrkohle Ag | Tunnel lining unit consisting of curved sheets - uses hydraulic cylinders to erect sheets against sides and close end gaps |
| CN1048580A (en) * | 1990-03-21 | 1991-01-16 | 汤文海 | Telescopic flexible metal shield support |
| DE4406166A1 (en) * | 1994-02-25 | 1995-08-31 | Hermann Meyer | Temporary, advancing gallery support frame for mine gallery stair |
| CN102720517A (en) * | 2012-06-08 | 2012-10-10 | 三一重型装备有限公司 | Advance support, advance support set and advance supporting device |
| CN103104267A (en) * | 2013-02-18 | 2013-05-15 | 范炳辉 | Soft rock roadway whole digging shield support |
| CN103643979A (en) * | 2013-07-15 | 2014-03-19 | 郑东风 | Hydraulic support used for roadway temporary support and erecting and use method of hydraulic support |
| CN206376886U (en) * | 2017-01-18 | 2017-08-04 | 中铁隧道股份有限公司 | Open type TBM steel arch-shelfs install horizontal brace clamping system |
| CN206458492U (en) * | 2017-02-22 | 2017-09-01 | 重庆工程职业技术学院 | Support group for coal mining |
| CN108457686A (en) * | 2018-04-18 | 2018-08-28 | 贵州大学 | A kind of balanced type Telescopic movable supporting arch up and down |
| CN108533300A (en) * | 2018-04-18 | 2018-09-14 | 贵州大学 | A kind of Telescopic movable supporting arch |
| CN108547652A (en) * | 2018-04-18 | 2018-09-18 | 贵州大学 | A kind of telescopic arc crown frame of separation |
| CN210370741U (en) * | 2019-05-22 | 2020-04-21 | 贵州大学 | Scalable tunnel support bow member |
-
2019
- 2019-05-22 CN CN201910429495.2A patent/CN110030026A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2802612A1 (en) * | 1978-01-21 | 1979-10-04 | Ruhrkohle Ag | Tunnel lining unit consisting of curved sheets - uses hydraulic cylinders to erect sheets against sides and close end gaps |
| CN1048580A (en) * | 1990-03-21 | 1991-01-16 | 汤文海 | Telescopic flexible metal shield support |
| DE4406166A1 (en) * | 1994-02-25 | 1995-08-31 | Hermann Meyer | Temporary, advancing gallery support frame for mine gallery stair |
| CN102720517A (en) * | 2012-06-08 | 2012-10-10 | 三一重型装备有限公司 | Advance support, advance support set and advance supporting device |
| CN103104267A (en) * | 2013-02-18 | 2013-05-15 | 范炳辉 | Soft rock roadway whole digging shield support |
| CN103643979A (en) * | 2013-07-15 | 2014-03-19 | 郑东风 | Hydraulic support used for roadway temporary support and erecting and use method of hydraulic support |
| CN206376886U (en) * | 2017-01-18 | 2017-08-04 | 中铁隧道股份有限公司 | Open type TBM steel arch-shelfs install horizontal brace clamping system |
| CN206458492U (en) * | 2017-02-22 | 2017-09-01 | 重庆工程职业技术学院 | Support group for coal mining |
| CN108457686A (en) * | 2018-04-18 | 2018-08-28 | 贵州大学 | A kind of balanced type Telescopic movable supporting arch up and down |
| CN108533300A (en) * | 2018-04-18 | 2018-09-14 | 贵州大学 | A kind of Telescopic movable supporting arch |
| CN108547652A (en) * | 2018-04-18 | 2018-09-18 | 贵州大学 | A kind of telescopic arc crown frame of separation |
| CN210370741U (en) * | 2019-05-22 | 2020-04-21 | 贵州大学 | Scalable tunnel support bow member |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236073A (en) * | 2020-01-13 | 2020-06-05 | 山东职业学院 | A supplementary strutting arrangement of construction for bridge construction |
| CN114753865A (en) * | 2022-04-21 | 2022-07-15 | 福州大学 | Self-adaptive supporting device for roadway caving area and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102155219B (en) | Comprehensive dredging machine | |
| CN101372891B (en) | Strip filling integral backstopping coal mining method | |
| CN100577986C (en) | Goaf surrounding rock around gob-side supporting method under three soft geological condition | |
| WO2016112771A1 (en) | Complete non-coal-pillar continuous depressurized mining method for short-distance coal seam group | |
| CN103643979B (en) | Hydraulic support used for roadway temporary support and erecting and use method of hydraulic support | |
| CN104653187B (en) | Method for excavating geological large-section tunnel with water-rich sand layer | |
| CN107013229A (en) | Folding telescopic gob side entry retaining roadside packing Flexible formwork assembly and its construction method | |
| CN108868833A (en) | A method of it carries out cutting gob side entry retaining in the relieving roadway of top in U-shaped steel supported laneway | |
| CN106223967A (en) | A kind of great burying rectangle or class Rectangular Tunnel shield-tunneling construction device and method | |
| CN108457686A (en) | A kind of balanced type Telescopic movable supporting arch up and down | |
| CN102121390B (en) | Telescopic tunneling immediate support device | |
| CN110030026A (en) | A kind of scalable roadway support arch and its operating method | |
| CN209604053U (en) | Combined bolting and shotcrete operation rock bolting jumbo | |
| CN210370741U (en) | Scalable tunnel support bow member | |
| CN104405392B (en) | Three soft high seam tunnel jackings are kept on file anchor rete cord active support longwall top coal caving method | |
| CN206860205U (en) | A kind of platform mechanical arm of bow member installation chassis | |
| CN109281687B (en) | Method for rapid direction-adjusting construction of coal mine heading machine | |
| RU2502873C1 (en) | Shaft lining, complex for its erection and method of its erection | |
| CN107387129A (en) | A kind of rapid constructing method for controlling the deformation of tunnel extrusion pressing type | |
| CN105937400B (en) | It is a kind of once to tunnel Liu Sheshuan lanes digging operation production line | |
| CN211851855U (en) | Roadway supporting structure through argillaceous broken zone | |
| CN211115999U (en) | Rock mining device for penetrating through surrounding rock of broken zone | |
| CN210919066U (en) | Fully mechanized caving face coal top down integrated tunneling device | |
| CN204402528U (en) | A kind of for tunneling the shield structure support with back production | |
| CN105937401B (en) | The method for protecting support in Liu Sheshuan lanes is once tunneled in a kind of U-shaped ventilation |
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 |