CN106121689B - A kind of excavation method of non-coal mine underground large stable chamber - Google Patents
A kind of excavation method of non-coal mine underground large stable chamber Download PDFInfo
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- CN106121689B CN106121689B CN201610692147.0A CN201610692147A CN106121689B CN 106121689 B CN106121689 B CN 106121689B CN 201610692147 A CN201610692147 A CN 201610692147A CN 106121689 B CN106121689 B CN 106121689B
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- chamber
- arch
- construction
- entry
- rock mass
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Classifications
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- 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
- 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
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
Abstract
The present invention relates to a kind of excavation method of non-coal mine underground large stable chamber,It is high for underground large stable chamber height,Span is big,Working procedure is complicated,And the problem of requiring farthest to shorten the construction period,It is combined by using inclined shaft with entry,One side of something is first carried out in entry and leads cave,Coordinate arrangement blasthole,Gib,Photoface exploision,First time anchor net permanent support molds chamber one side of something arch profile,Brush again and expand another half of arch of chamber,Coordinate arrangement blasthole,Gib,Photoface exploision,Second of anchor net,Anchor cable,Gunite concrete permanent support molds another half of arch profile of chamber,After the chamber arch sublevel drive construction of entry,Carry out the chamber arch molding construction on the slope top of inclined shaft,Finally bottom has been carried out again,It is slow can to solve speed of application,Construction efficiency is low,The big problem of construction labor intensity,And then improve construction speed.
Description
Technical field
The present invention provides a kind of excavation method of non-coal mine underground large stable chamber, belong to the large-scale cave in non-coal mine underground
Room engineering construction field.
Background technology
Non-coal mine underground large stable chamber is underground mine Important building, and this chamber has that section is big, chamber service year
The characteristics of limit for length, difficulty of construction are greatly, construction quality requirement is high, it is part crucial in infrastructure project.With the hair of mining industry
Exhibition and the continuous improvement of construction technology, underground mine are also higher and higher to the construction requirement of large stable chamber.
One of non-coal mine underground large stable chamber building important as underground, with height is high, span is big, construction technology
The characteristics of complicated, when run into engineering geological condition complexity when, it is desirable to shorten the construction period to greatest extent, reduces energy consumption, increase benefit,
Ensure construction quality and safety.
At present, common form of construction work is to lead cave method, and it is exactly first then progressively to be brushed again with light section advance development to lead cave method
Arrive design section greatly.Although it is a kind of safe and reliable construction method to lead cave method, the drawback is that construction procedure is more, speed compared with
Slowly.Using full cross section excavation difficulty of construction is big, efficiency is low, security risk is big, generally use step construction method, day well construction
Method, ramp construction method, lead cave construction method, and brill is embraced since step construction is mainly suitable for hand, and is unfavorable for roof timbering, and courtyard
Method low construction efficiency, speed are slow.
The content of the invention
The purpose of the present invention is for above shortcoming, there is provided a kind of excavation side of non-coal mine underground large stable chamber
Method.
Scheme is a kind of excavation method of non-coal mine underground large stable chamber used by the present invention solves technical problem, bag
Include following steps：
Step S1：In the opposite construction at the same time of the both ends of chamber, inclined shaft, length 10-25m are tunneled respectively, the gradient is
18%；
Step S2：When the slope top construction of two inclined shafts is to chamber design height position, both ends opposite construction at the same time, puts down
Entry is tunneled on slope；
Step S3：Entry, which tunnels, uses unilateral construction when remaining 5-10m to rock mass, entry is penetrated through；
Step S4：The segmentation one side of something for proceeding by entry leads cave, first arranges blasthole in the end segments of entry, together
When according to rock mass conditions carry out gib, be fixed on using pipe seam anchor bar on rock mass and gunite concrete；
Step S5：It is contoured using photoface exploision control chamber one side of something arch, carried out after shaping in chamber one side of something arch
First time anchor net permanent support；
Step S6：Brush expands another half of arch of chamber after supporting, and arrangement blasthole is faced according to rock mass conditions at the same time
When supporting, be fixed on using pipe seam anchor bar on rock mass and gunite concrete；
Step S7：It is contoured using another half of arch of photoface exploision control chamber, in another one side of something of chamber after shaping
Arch carries out second of anchor net, anchor cable permanent support；
Step S8：Gunite concrete permanent support is carried out on molding chamber arch in step S5, S7；
Step S9：After the chamber arch permanent support of entry end segments, the method using step S4-S8 is gradual
The shaping of chamber arch and anchor net, anchor cable, gunite concrete permanent support by whole entry finish；
Step S10：Engineering truck is located at entry, and expansion is gradually brushed in the segmentation for carrying out the slope top of two inclined shafts, is being inclined
The one slope top section brush in inclined gallery road expands and arranges blasthole, while carries out gib according to rock mass conditions, is consolidated using pipe seam anchor bar
Simultaneously gunite concrete is scheduled on rock mass；
Step S11：The chamber arch pushed up using the slope of photoface exploision control inclined shaft is contoured, in cave after shaping
Room arch carries out anchor net, anchor cable permanent support, and gunite concrete permanent support；
Step S12：Step S10, the rock mass landfill to drop in step S11 is on the ramp of inclined shaft, engineering truck bottom
Gradually the whole slope of inclined shaft is pushed up by the rock mass support gradually reach dropped, and using the method for step S10-11 in portion
The shaping of chamber arch and anchor net, anchor cable, gunite concrete permanent support finish；
Step S13：After whole chamber arch construction, chamber lower part construction is carried out, forward direction has carried out bottom, while basis
Rock mass conditions carry out jetting cement, pipe seam anchor bar gib to wall portion；
Step S14：Service pit, silt sedimentation basin, the excavation on suspention facility basis are carried out, finally carries out chamber bottom plate paving
Build, suspend facility basis in midair and pour operation.
Further, in step s 6, the brush of another half of arch of chamber expands the perforating tunneling method using protrusive.
Further, in the step s 7, cable bolting can use anchor cable trolley, and main working procedure is as follows：
Step S71：Punching；
Step S72：Insert steel strand wires；
Step S73：Plug-hole；
Step S74：Slip casting；
Step S75：Pacify anchorage；
Further, in step s 11, the thickness of gunite concrete permanent support is 100mm-150mm.
Further, in step S14, chamber bottom plate is C30 concrete makings.
Further, in step S14, in the casting process of suspention facility basis, concrete is made firm by ramming with poker vibrator,
Vibrating head is inserted into 40~50mm of lower-layer concrete, every time mobile 400mm or so, 20~30s of time of vibration.
Compared with prior art, the invention has the advantages that：It is big for underground large stable chamber height height, span,
Working procedure is complicated, and requires maximum the problem of shortening the construction period, and is combined by using inclined shaft with entry,
One side of something is first carried out in entry and leads cave, coordinates arrangement blasthole, gib, photoface exploision, first time anchor net permanent support
Mold chamber one side of something arch profile, then brush and expand another half of arch of chamber, coordinate arrangement blasthole, gib, photoface exploision,
Second of anchor net, anchor cable, gunite concrete permanent support mold another half of arch profile of chamber, when the chamber of entry
After the sublevel drive construction of arch, the chamber arch molding construction on the slope top of inclined shaft is carried out, has finally carried out bottom again,
It can solve that speed of application is slow, and construction efficiency is low, the big problem of construction labor intensity, and then improve construction speed.
Brief description of the drawings
Patent of the present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the inclined shaft of the inventive embodiments, entry driving schematic diagram；
Fig. 2 is the A-A sectional views of Fig. 1；
Fig. 3 is the B-B sectional views of Fig. 1；
Fig. 4 is the arrangement blasthole schematic diagram in Fig. 2；
Fig. 5 is the contoured schematic diagram in chamber one side of something arch；
Fig. 6 is the contoured schematic diagram in another half of arch of chamber；
Fig. 7 is the chamber arch molding construction schematic diagram one that the slope of inclined shaft is pushed up；
Fig. 8 is the chamber arch molding construction schematic diagram two that the slope of inclined shaft is pushed up；
Fig. 9 is the chamber arch molding construction schematic diagram three that the slope of inclined shaft is pushed up；
Figure 10 plays bottom application work schematic diagram one for chamber lower part；
Figure 11 plays bottom application work schematic diagram two for chamber lower part；
Figure 12 is the sectional drawing of Figure 10；
Figure 13 is the sectional drawing of Figure 11；
In figure：
1- inclined shafts；2- entrys；3- blastholes；4- first time anchor nets；Second of anchor net of 5-；6- anchor cables；7- slopes
Top；8- ramps；9- engineering trucks；10- chambers；11- chamber one side of something arch profile；Another half of arch profile of 12- chambers；13-
The rock mass to drop.
Embodiment
The present invention is further described with reference to the accompanying drawings and detailed description.
As shown in figures 1-13, a kind of excavation method of non-coal mine underground large stable chamber, comprises the following steps：
Step S1：In the opposite construction at the same time of the both ends of chamber 10, inclined shaft 1, length 10-25m, slope are tunneled respectively
Spend for 18%；
Step S2：When the slope top construction of two inclined shafts is to chamber design height position, both ends opposite construction at the same time, puts down
Entry 2 is tunneled on slope；
Step S3：Entry, which tunnels, uses unilateral construction when remaining 5-10m to rock mass, entry is penetrated through；
Step S4：The segmentation one side of something for proceeding by entry leads cave, first arranges blasthole 3 in the end segments of entry,
Gib is carried out according to rock mass conditions at the same time, simultaneously gunite concrete is fixed on rock mass using pipe seam anchor bar；
Step S5：Be molded using photoface exploision control chamber one side of something arch profile 11, after shaping chamber one side of something arch into
4 permanent support of row first time anchor net；
Step S6：Brush expands another half of arch of chamber after supporting, and arrangement blasthole is faced according to rock mass conditions at the same time
When supporting, be fixed on using pipe seam anchor bar on rock mass and gunite concrete；
Step S7：Be molded using another half of arch profile 12 of photoface exploision control chamber, after shaping chamber the other half
Side arch carries out second of anchor net 5,6 permanent support of anchor cable；
Step S8：Gunite concrete permanent support is carried out on molding chamber arch in step S5, S7；
Step S9：After the chamber arch permanent support of entry end segments, the method using step S4-S8 is gradual
The shaping of chamber arch and anchor net, anchor cable, gunite concrete permanent support by whole entry finish；
Step S10：Engineering truck is located at entry, and expansion is gradually brushed in the segmentation for carrying out the slope top 7 of two inclined shafts, is being inclined
The one slope top section brush in inclined gallery road expands and arranges blasthole, while carries out gib according to rock mass conditions, is consolidated using pipe seam anchor bar
Simultaneously gunite concrete is scheduled on rock mass；
Step S11：The chamber arch pushed up using the slope of photoface exploision control inclined shaft is contoured, in cave after shaping
Room arch carries out anchor net, anchor cable permanent support, and gunite concrete permanent support；
Step S12：Step S10, the rock mass landfill to drop in step S11 is on the ramp 8 of inclined shaft, engineering truck 9
Bottom supports gradual reach by the rock mass 13 to drop, and uses the method for step S10-11 gradually by the whole oblique of inclined shaft
Simultaneously anchor net, anchor cable, gunite concrete permanent support finish for the chamber arch shaping of top of the slope；
Step S13：After whole chamber arch construction, chamber lower part construction is carried out, forward direction carries out two secondary clearings and plays bottom,
Ensure chamber bottom planarization, while jetting cement, pipe seam anchor bar gib, supporting specification are carried out to wall portion according to rock mass conditions
And shotcrete thickness is performed according to design requirement, process is reasonable during due to Chamber Construction, easy for construction, and mechanization degree is high, therefore
Speed of application can be greatly improved；
Step S14：Service pit, silt sedimentation basin, the excavation on suspention facility basis are carried out, finally carries out chamber bottom plate paving
Build, suspend facility basis in midair and pour operation.
In the present embodiment, in step s 6, the brush of another half of arch of chamber expands the perforating driving side using protrusive
Formula, ensures that arch brush expands quality.
In the present embodiment, in the step s 7, cable bolting can use anchor cable trolley, and main working procedure is as follows：
Step S71：Punching；
Step S72：Insert steel strand wires；
Step S73：Plug-hole；
Step S74：Slip casting；
Step S75：Pacify anchorage；
In the present embodiment, in step s 11, the thickness of gunite concrete permanent support is 100mm-150mm, branch nurse
Skill is identical with typical drift section construction supporting technique.
In the present embodiment, in step S14, chamber bottom plate is C30 concrete makings.
In the present embodiment, in step S14, in the casting process of suspention facility basis, concrete poker vibrator
Make firm by ramming, vibrating head insertion 40~50mm of lower-layer concrete, every time mobile 400mm or so, 20~30s of time of vibration.
In the present embodiment, can be by the way of Fully-mechanized operation, i.e. tunneling construction（Trolley）, gunite concrete（Spray
Starch trolley）, anchor bolt construction（Rock bolting jumbo）, anchor cable construction（Anchor cable trolley）.
In the present embodiment, since chamber section is larger, full face tunneling should not once be carried out, it is contemplated that first one side of something is led
Cave, after permanent support, then brushes expansion opposite side.
Above-listed preferred embodiment, is further described the object, technical solutions and advantages of the present invention, answers
Understand, the foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention god.
Claims (6)
1. a kind of excavation method of non-coal mine underground large stable chamber, it is characterised in that comprise the following steps：
Step S1：In the opposite construction at the same time of the both ends of chamber, inclined shaft, length 10-25m, the gradient 18% are tunneled respectively；
Step S2：When the slope top construction of two inclined shafts is to chamber design height position, both ends opposite construction at the same time, flat slope pick
Into entry；
Step S3：Entry, which tunnels, uses unilateral construction when remaining 5-10m to rock mass, entry is penetrated through；
Step S4：The segmentation one side of something for proceeding by entry leads cave, first arranges blasthole, while root in the end segments of entry
Gib is carried out according to rock mass conditions, simultaneously gunite concrete is fixed on rock mass using pipe seam anchor bar；
Step S5：It is contoured using photoface exploision control chamber one side of something arch, after shaping first is carried out in chamber one side of something arch
Secondary anchor net permanent support；
Step S6：Brush expands another half of arch of chamber after supporting, and arrangement blasthole is propped up temporarily according to rock mass conditions at the same time
Shield, simultaneously gunite concrete is fixed on rock mass using pipe seam anchor bar；
Step S7：It is contoured using another half of arch of photoface exploision control chamber, in another half of arch of chamber after shaping
Carry out second of anchor net, anchor cable permanent support；
Step S8：Gunite concrete permanent support is carried out on molding chamber arch in step S5, S7；
Step S9：, gradually will be whole using the method for step S4-S8 after the chamber arch permanent support of entry end segments
Simultaneously anchor net, anchor cable, gunite concrete permanent support finish for the chamber arch shaping of bar entry；
Step S10：Engineering truck is located at entry, and expansion is gradually brushed in the segmentation for carrying out the slope top of two inclined shafts, is tilting lane
The one slope top section brush in road expands and arranges blasthole, while carries out gib according to rock mass conditions, is fixed on using pipe seam anchor bar
On rock mass and gunite concrete；
Step S11：The chamber arch pushed up using the slope of photoface exploision control inclined shaft is contoured, encircles after shaping in chamber
Portion carries out anchor net, anchor cable permanent support, and gunite concrete permanent support；
Step S12：Step S10, the rock mass to drop in step S11 is filled on the ramp of inclined shaft, and engineering car bottom is borrowed
The rock mass support gradually reach dropped, and the cave for using the method for step S10-11 gradually to push up the whole slope of inclined shaft
Simultaneously anchor net, anchor cable, gunite concrete permanent support finish the shaping of room arch；
Step S13：After whole chamber arch construction, chamber lower part construction is carried out, forward direction has carried out bottom, while according to rock mass
Situation carries out jetting cement, pipe seam anchor bar gib to wall portion；
Step S14：Service pit, silt sedimentation basin, the excavation on suspention facility basis are carried out, chamber bottom plate making is finally carried out, hangs
Hang facility basis and pour operation.
A kind of 2. excavation method of non-coal mine underground large stable chamber according to claim 1, it is characterised in that：In step
In S6, the brush of another half of arch of chamber expands the perforating tunneling method using protrusive.
A kind of 3. excavation method of non-coal mine underground large stable chamber according to claim 1, it is characterised in that：In step
In S7, cable bolting can use anchor cable trolley, and main working procedure is as follows：
Step S71：Punching；
Step S72：Insert steel strand wires；
Step S73：Plug-hole；
Step S74：Slip casting；
Step S75：Pacify anchorage.
A kind of 4. excavation method of non-coal mine underground large stable chamber according to claim 3, it is characterised in that：In step
In S11, the thickness of gunite concrete permanent support is 100mm-150mm.
A kind of 5. excavation method of non-coal mine underground large stable chamber according to claim 1, it is characterised in that：In step
In S14, chamber bottom plate is C30 concrete makings.
A kind of 6. excavation method of non-coal mine underground large stable chamber according to claim 1, it is characterised in that：In step
In S14, in the casting process of suspention facility basis, concrete is made firm by ramming with poker vibrator, vibrating head insertion lower-layer concrete 40
~50mm, moves 400mm, 20~30s of time of vibration every time.
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| CN201610692147.0A CN106121689B (en) | 2016-08-22 | 2016-08-22 | A kind of excavation method of non-coal mine underground large stable chamber |
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| CN201610692147.0A CN106121689B (en) | 2016-08-22 | 2016-08-22 | A kind of excavation method of non-coal mine underground large stable chamber |
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| CN106121689B true CN106121689B (en) | 2018-04-13 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343455A (en) * | 2017-12-28 | 2018-07-31 | 浙江省隧道工程公司 | Binary channels underground chamber construction method |
| CN109488347B (en) * | 2018-10-25 | 2021-01-15 | 浙江省隧道工程集团有限公司 | Excavation construction method for special stratum chamber |
| CN111764937B (en) * | 2020-07-31 | 2022-03-29 | 湖南科技大学 | Construction method for ore unloading chamber support of under 40m slipping system engineering |
| CN112196542A (en) * | 2020-09-17 | 2021-01-08 | 国电建投内蒙古能源有限公司 | Tunneling construction method for ultra-large section reloading chamber |
| CN112096429A (en) * | 2020-10-09 | 2020-12-18 | 通用技术集团工程设计有限公司 | Construction method for rapidly tunneling ultra-large section chamber based on rock directional hydraulic fracturing technology |
| CN113530558B (en) * | 2021-08-20 | 2023-11-28 | 湖南涟邵建设工程(集团)有限责任公司 | Double-drop shaft-inclined drift combined layered construction method for high-large chamber |
| CN116641724B (en) * | 2023-07-27 | 2023-10-13 | 中国矿业大学(北京) | Cooperative control method for high-prestress constant-resistance anchor rod and anchor cable of deep-buried soft rock roadway |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101699030A (en) * | 2009-11-20 | 2010-04-28 | 中冶集团华冶资源开发有限责任公司 | Big underground chamber tunneling method |
| CN101718199B (en) * | 2009-12-20 | 2011-10-05 | 山西晋城无烟煤矿业集团有限责任公司 | Method for constructing underground coal mine chamber of large cross section |
| CN102071947B (en) * | 2011-01-21 | 2013-02-06 | 中交四航局第一工程有限公司 | Construction method for soft surrounding rock section of large-span tunnel portal |
| CN102226399A (en) * | 2011-06-02 | 2011-10-26 | 中铁二院工程集团有限责任公司 | Soft rock four-line large-span tunnel three-bench cable-bracing excavation construction method |
| CN102619524B (en) * | 2012-03-16 | 2014-05-28 | 安徽恒源煤电股份有限公司钱营孜煤矿 | Construction method for opening off small-section underground chamber of coal mine rock roadway into large-section underground chamber |
| CN103953368B (en) * | 2014-05-14 | 2015-11-11 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Three layers of associating tunneling construction method of especially big elevator chamber |
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