CN109681237A - A kind of supporting construction and construction method of Soft Rock Roadway Floor Heave - Google Patents
A kind of supporting construction and construction method of Soft Rock Roadway Floor Heave Download PDFInfo
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- CN109681237A CN109681237A CN201811577432.3A CN201811577432A CN109681237A CN 109681237 A CN109681237 A CN 109681237A CN 201811577432 A CN201811577432 A CN 201811577432A CN 109681237 A CN109681237 A CN 109681237A
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- 238000010276 construction Methods 0.000 title claims abstract description 55
- 239000011435 rock Substances 0.000 title claims abstract description 38
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 356
- 239000010959 steel Substances 0.000 claims abstract description 356
- 238000005266 casting Methods 0.000 claims abstract description 41
- 239000002131 composite material Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 8
- 230000015271 coagulation Effects 0.000 claims description 2
- 238000005345 coagulation Methods 0.000 claims description 2
- 239000002689 soil Substances 0.000 claims description 2
- 241000277275 Oncorhynchus mykiss Species 0.000 claims 1
- 229910000658 steel phase Inorganic materials 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 239000003245 coal Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005065 mining Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- E21D11/10—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
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
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Abstract
The invention discloses a kind of supporting construction of Soft Rock Roadway Floor Heave and construction methods, comprising: frame section and several anchor poles.Frame section includes: the first channel steel, the second channel steel, first casting die, second is allowed to allow casting die, several central connectors, third channel steel.First channel steel, the second channel steel are arranged in parallel.Central connector is set between the first channel steel, the second channel steel, and central connector is located at the lower section of the first channel steel, the second channel steel place horizontal plane.Third channel steel is respectively connected between adjacent central connector.First allows casting die to include first horizontal segment channel steel, the first oblique channel steel, the second oblique channel steel；Second allows casting die to include the second horizontal segment channel steel, the oblique channel steel of third, the 4th oblique channel steel.Anchor pole is set to the bottom side of frame section.By using center connecting plate, first that casting die and second is allowed to allow casting die in supporting construction, increase composite structure can supporting area, change traditional steel arch-shelf structure can not supporting large section roadway the case where.
Description
Technical field
The invention belongs to Roadway Support Technology field more particularly to the supporting construction and construction party of a kind of Soft Rock Roadway Floor Heave
Method.
Background technique
As the depth of progress China exploiting colliery of coal mining technology gradually increases, however well for deep well coal mine in
Matter condition is sufficiently complex, brings very high risk, tunnel bottom distension under the action of high-ground stress to the normal exploitation of coal mine
Phenomenon is often very serious, this virtually just increases the supporting difficulty in tunnel, even if after the completion of supporting, the probability of later period maintenance
Also very high, this just substantially increases the cost of coal mining.Swelling soft-rock is exactly one of representative, and dilatancy is soft
Rock gangway road is than other kinds of Deformation in Soft Rock Tunnel more it is apparent that bottom distension is larger.Therefore the bottom distension phenomenon of swelling soft-rock is just
It is the main reason for causing roadway damage.
In existing bottom distension resolution, usually be arranged bottom plate anchor pole, FLOOR ANCHOR, open up pressure relief groove, grouting and reinforcing,
Underplate concrete antiarch, arrangement the methods of metal truss and shape steel bracket are set.But due to crustal stress in deep tunnel
Larger, single method for protecting support tends not to achieve the desired results.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of supporting construction of Soft Rock Roadway Floor Heave and construction methods, increase
Composite structure can supporting area, solve the problems, such as that traditional steel arch-shelf structure can not supporting large section roadway.
To solve the above problems, the technical solution of the present invention is as follows:
The supporting construction of a kind of Soft Rock Roadway Floor Heave of the invention, comprising: frame section and several anchor poles；
The frame section include: the first channel steel, the second channel steel, first allow casting die, second allow casting die, several centers connection
Part, third channel steel；
First channel steel, second channel steel are arranged in parallel；
The central connector is set between first channel steel, second channel steel, and the central connector position
The lower section of horizontal plane where first channel steel, second channel steel；
The third channel steel is respectively connected between the adjacent central connector；
Described first allows casting die to include first horizontal segment channel steel, the first oblique channel steel, the second oblique channel steel；
The first end of the first horizontal segment channel steel and first channel steel are connected, and the first of the first oblique channel steel
End, the first end of the second oblique channel steel are connected with the second end of the first horizontal segment channel steel；First oblique slot
Steel, the second oblique channel steel respectively correspond the two adjacent central connectors, the second end of the first oblique channel steel with
Its corresponding described central connector is connected, and the corresponding central connector of the second end of the second oblique channel steel is solid
Even；
Described second allows casting die to include the second horizontal segment channel steel, the oblique channel steel of third, the 4th oblique channel steel；
The first end of the second horizontal segment channel steel and second channel steel are connected, and the first of the oblique channel steel of third
End, the first end of the 4th oblique channel steel are connected with the second end of the second horizontal segment channel steel；The third oblique slot
Steel, the 4th oblique channel steel respectively correspond the two adjacent central connectors, the second end of the oblique channel steel of third with
Its corresponding described central connector is connected, and the corresponding central connector of the second end of the 4th oblique channel steel is solid
Even；
The anchor pole is set to the bottom side of the frame section.
The supporting construction of Soft Rock Roadway Floor Heave of the invention, described first allows casting die to further include the first channel steel set, and described
One channel steel set is connected with first channel steel and the first horizontal segment channel steel respectively；Described second allows casting die to further include the second slot
Steel bushing, the second channel steel set are connected with second channel steel and the second horizontal segment channel steel respectively.
The supporting construction of Soft Rock Roadway Floor Heave of the invention,
The head end of the first horizontal segment channel steel is welded with the first closed cover；
Corresponding bolt slot is provided on the first channel steel set and first horizontal segment channel steel；
The top surface that the first channel steel set is connected with the first horizontal segment channel steel is welded with two steel bars, and the steel bar deviates from
The end of first channel steel set top surface is threaded, and is cased with spring on the steel bar；
The steel bar passes through first closed cover and is limited by bolt to the first horizontal segment channel steel；
First channel steel set and the first horizontal segment channel steel by the way that the bolt of corresponding bolt slot connects；
First channel steel set top is welded with the second closed cover；
The head end of the second horizontal segment channel steel is welded with third closed cover；
Corresponding bolt slot is provided on the second channel steel set and the second horizontal segment channel steel；
The top surface that the second channel steel set is connected with the second horizontal segment channel steel is welded with two steel bars, and the steel bar deviates from
The end of second channel steel set top surface is threaded, and is cased with spring on the steel bar；
The steel bar passes through the third closed cover and is limited by bolt to the second horizontal segment channel steel；
Second channel steel set and the second horizontal segment channel steel by the way that the bolt of corresponding bolt slot connects；
Second channel steel set top is welded with the 4th closed cover.
The supporting construction of Soft Rock Roadway Floor Heave of the invention, the central connector include upper cage plate and lower cage plate, described
Upper cage plate and the lower cage plate cooperation are to form six channel steel sets.
The supporting construction of Soft Rock Roadway Floor Heave of the invention, the anchor pole be respectively arranged at first channel steel bottom side,
The bottom side of second channel steel, the bottom side of the central connector, the bottom side of the first oblique channel steel, second oblique slot
The bottom side of steel, the bottom side of the oblique channel steel of the third and the 4th oblique channel steel bottom side.
A kind of construction method of the supporting construction of Soft Rock Roadway Floor Heave of the invention, method includes the following steps:
S1: the length direction on the bottom plate in the tunnel and along the tunnel digs clearly bottom plate, keeps the bottom plate arc-shaped,
Encircle one layer concrete of upper berth at the bottom excavated, bottom is laid with to one layer of anchor net in advance along its length；
S2: the frame section being laid in claim 1；
S3: the anchor pole is set in the bottom of the frame section；
S4: fill concrete makes its channel steel upper and lower surface form one along the tunnel length side in the supporting construction
To arc-shaped anti-bottom encircle, finally re-lay one layer of anchor net on top again, be all installed in place after-pouring in the composite structure
Concrete is completely covered by the concrete all structures, while concrete exceeds original 10~20cm of bottom plate position.
The construction method of the supporting construction of Soft Rock Roadway Floor Heave of the invention, the cross section in tunnel described in the step S1
The depth that length direction of the midpoint along the tunnel is dug downwards is 100~120cm, and span length reserves at left and right sides of direction
Place the horizontal segment of first channel steel and second channel steel.
The construction method of the supporting construction of Soft Rock Roadway Floor Heave of the invention in the step S3, connects at the center
The anchor pole vertically downward is beaten by reserved bolthole on part；By pre- on first channel steel and second channel steel
The bolthole stayed beats the anchor pole with vertical direction in 45 degree of angles；In the described first oblique channel steel, second oblique slot
The bottom side of steel, the oblique channel steel of the third and the 4th oblique channel steel is beaten with vertical direction by reserved bolthole in 30 degree
The anchor pole of angle.
The present invention due to using the technology described above, makes it have the following advantages that and actively imitate compared with prior art
Fruit:
1) casting die and second is allowed to allow casting die using central connector, first in supporting construction in one embodiment of the invention,
Central connector is set to below the horizontal plane of the first channel steel and the second channel steel, and first allows casting die to include first horizontal segment channel steel, the
One oblique channel steel, the second oblique channel steel, first horizontal segment channel steel are connected with the first channel steel, the first oblique channel steel, the second oblique slot
Steel is connected with adjacent central connector respectively, second allow casting die include the second horizontal segment channel steel, the oblique channel steel of third, the 4th tiltedly
To channel steel, the second horizontal segment channel steel is connected with the second channel steel, the oblique channel steel of third, the 4th oblique channel steel respectively with adjacent center
Connector be connected, this connection type increase composite structure can supporting area, changing traditional steel arch-shelf structure can not prop up
The case where protecting large section roadway.
2) in one embodiment of the invention after the complete concrete of one-piece casting, due to two layers of anchor net of steelframe upper and lower surface, make it
Entire anti-bottom curved arch plate forms an entirety, and the upward stress of vertical base plate controls a part by anchor pole first, secondly surplus
Remaining stress is dispersed by the anti-bottom arch shell of arc along surface of shell, last remaining stress along plate face reach portion, side after by portion, side
Set first allows casting die and second that casting die is allowed further to decompose, and has achieved the effect that traditional pressure relief groove release, combination supporting
Structure has merged rigid protection structure and pressure relief support structure well, can preferably control floor lift in gallery phenomenon.
3) the U-shaped of an anti-bottom arch is taken in the bottom in one embodiment of the invention in tunnel, changes power system direction, will be vertical
Stress transmission is other directions, further shifts in conjunction with the laminated structure that unloads in tunnel portion, side and releases stress.
Detailed description of the invention
Fig. 1 is the schematic perspective view of the supporting construction of Soft Rock Roadway Floor Heave of the invention；
Fig. 2 is the planar structure schematic diagram of the supporting construction of Soft Rock Roadway Floor Heave of the invention；
Fig. 3 is that allowing for the supporting construction of Soft Rock Roadway Floor Heave of the invention presses component drawings；
Fig. 4 is the central connector structural schematic diagram of the supporting construction of Soft Rock Roadway Floor Heave of the invention；
Fig. 5 is the herringbone channel steel schematic diagram of the supporting construction of Soft Rock Roadway Floor Heave of the invention；
Fig. 6 is the central connector schematic diagram of the supporting construction of Soft Rock Roadway Floor Heave of the invention；
Fig. 7 is the central connector schematic diagram of the supporting construction of Soft Rock Roadway Floor Heave of the invention；
Fig. 8 is the third channel steel schematic diagram of the supporting construction of Soft Rock Roadway Floor Heave of the invention；
Fig. 9 is the 4th channel steel structure chart of the supporting construction of Soft Rock Roadway Floor Heave of the invention；
Figure 10 is the 4th channel steel schematic diagram of the supporting construction of Soft Rock Roadway Floor Heave of the invention；
Figure 11 is the flow chart of the construction method of the supporting construction of Soft Rock Roadway Floor Heave of the invention.
Description of symbols: 1: the first channel steel；2: the second channel steels；Allow casting die at 3: the first；301: the first channel steel sets；302: the
One horizontal segment channel steel；303: steel bar；304: spring；305: bolt slot；306: the first oblique channel steels；307: the second oblique channel steels；
4: central connector；401: upper cage plate；402: lower cage plate；5: third channel steel；6: anchor pole；7: the four channel steels.
Specific embodiment
It to a kind of supporting construction of Soft Rock Roadway Floor Heave proposed by the present invention and is applied below in conjunction with the drawings and specific embodiments
Work method is described in further detail.According to following explanation and claims, advantages and features of the invention will be become apparent from.
Embodiment 1
Referring to Fig. 1, Fig. 2, Fig. 8 and Figure 10, a kind of supporting construction of Soft Rock Roadway Floor Heave, comprising: frame section and several
Anchor pole 6.Frame section include: the first channel steel 1, the second channel steel 2, first allow casting die 3, second allow casting die, several central connectors 4,
Third channel steel 5.First channel steel 1, the second channel steel 2 are arranged in parallel.Central connector 4 is set between the first channel steel 1, the second channel steel 2,
And central connector 4 is located at the lower section of the first channel steel 1,2 place horizontal plane of the second channel steel.Between adjacent central connector 4
It is respectively connected with third channel steel 5.First allows casting die 3 to include first horizontal segment channel steel 302, the first oblique channel steel 306, the second oblique slot
Steel 307；The first end of first horizontal segment channel steel 302 and the first channel steel 1 are connected, and the first end of the first oblique channel steel 306, second are tiltedly
It is connected to the first end of channel steel 307 with the second end of first horizontal segment channel steel 302；First oblique channel steel 306, the second oblique slot
Steel 307 respectively corresponds two adjacent central connectors 4, the corresponding central connector 4 of the second end of the first oblique channel steel 306
It is connected, the corresponding central connector 4 of the second end of the second oblique channel steel 307 is connected.Second allows casting die to include second horizontal
Section channel steel, the oblique channel steel of third, the 4th oblique channel steel.The first end of second horizontal segment channel steel and the second channel steel are connected, and third is oblique
It is connected to first end, the first end of the 4th oblique channel steel of channel steel with the second end of the second horizontal segment channel steel；Third oblique slot
Steel, the 4th oblique channel steel respectively correspond two adjacent central connectors, the corresponding center of the second end of the oblique channel steel of third
Connector is connected, and the corresponding central connector of the second end of the 4th oblique channel steel is connected.Anchor pole 6 is set to the bottom of frame section
Side.By using central connector 4, first that casting die 3 and second is allowed to allow casting die in supporting construction, central connector 4 is set to the
Below the horizontal plane of one channel steel 1 and the second channel steel 2, first allows casting die to include first horizontal segment channel steel 302, the first oblique channel steel
306, the second oblique channel steel 307, first horizontal segment channel steel 302 are connected with the first channel steel 1, and the first oblique channel steel 306, second is oblique
Channel steel 307 is connected with adjacent central connector 4 respectively, second allow casting die include the second horizontal segment channel steel, the oblique channel steel of third,
4th oblique channel steel, the second horizontal segment channel steel are connected with the second channel steel 2, the oblique channel steel of third, the 4th oblique channel steel respectively with phase
Adjacent central connector 4 is connected, this connection type increase composite structure can supporting area, change traditional steel arch-shelf knot
Structure can not supporting large section roadway the case where.
Further, referring to Fig. 3 and Fig. 5, first casting die 3 is allowed to further include the first channel steel set 301, the first channel steel covers 301 points
It is not connected with the first channel steel 1 and first horizontal segment channel steel 302；Second allows casting die to further include the second channel steel set, the second channel steel set point
It is not connected with the second channel steel and the second horizontal segment channel steel.
Further, the head end of first horizontal segment channel steel 302 is welded with the first closed cover.First channel steel set 301 and first
Corresponding bolt slot 305 is provided on horizontal segment channel steel 302.The top that first channel steel set 301 is connected with first horizontal segment channel steel 302
Face is welded with two steel bars 303, and steel bar 303 is threaded away from the end that the first channel steel covers 301 top surfaces, is cased on steel bar 303
Spring 304.Steel bar 303 passes through the first closed cover and is limited by bolt to first horizontal segment channel steel 302.First channel steel
Set 301 with first horizontal segment channel steel 302 by corresponding bolt slot 305 bolt connects.First channel steel covers 301 tops and is welded with
Second closed cover, to close the inner space of the first channel steel set 301.Rubber is filled in the inner space of first channel steel set 301
Glue particle, to play buffer function.The head end of second horizontal segment channel steel is welded with third closed cover.Second channel steel set and the second water
Corresponding bolt slot 305 is provided on flat section channel steel.The top surface that second channel steel set is connected with the second horizontal segment channel steel is welded with two
Steel bar 303, steel bar 303 are threaded away from the end of the second channel steel set top surface, and spring 304 is cased on steel bar 303.Steel bar
303 pass through third closed cover and are limited by bolt to the second horizontal segment channel steel.Second channel steel set and the second horizontal segment
The bolt that channel steel passes through corresponding bolt slot 305 connects.Second channel steel set top is welded with the 4th closed cover, to close second
The inner space of channel steel set.It is filled with rubber grain in the inner space of second channel steel set, to play buffer function.Pass through first
Channel steel set and first horizontal segment channel steel and the second channel steel set and the limit of the second horizontal segment channel steel plus the company of spring and rubber grain
Mode is connect, the release effect of traditional pressure relief groove is realized, combined support structure has merged rigid protection structure and release well
Supporting construction can preferably control floor lift in gallery phenomenon.
Preferably, the first oblique channel steel 306, the second oblique channel steel 307, the oblique channel steel of third and the 4th oblique channel steel is upper
It is in 60 degree and 120 degree of the arc channel steel for being close to bottom plate that half section and lower semisection are with the length direction in tunnel respectively.In tunnel
The U-shaped of an anti-bottom arch is taken in bottom, changes power system direction, vertical stress is converted to other directions, in conjunction with tunnel portion, side
It unloads laminated structure and further shifts and release stress.
Further, referring to Fig. 4, central connector 4 includes upper cage plate 401 and lower cage plate 402, upper cage plate 401 and is trapped
Plate 402 cooperates to form six channel steel sets.There are also connected channel steels to be accordingly provided with bolt for the cage plate up and down of central connector 4
Hole, the geometric center of central connector 4 are provided with bolthole, and hexagon is than being higher by one at channel steel set at the center of lower cage plate 402
Steel plate interconnection is arranged at the outer edge bottom of the thickness of channel steel bottom plate, the channel steel set of lower cage plate 402.
Preferably, anchor pole 6 be respectively arranged at the bottom side of the first channel steel 1, the bottom side of the second channel steel 2, central connector 4 bottom
Side, the bottom side of the first oblique channel steel 306, the bottom side of the second oblique channel steel 307, the bottom side of the oblique channel steel of third and the 4th oblique slot
The bottom side of steel.
Preferably, each side of the intersection of frame section, which is taken, is welded with processing, further increases bottom center
Stability.
Embodiment 2
The present embodiment is further limited on the basis of embodiment 1, and rest part is same as Example 1 or phase
Seemingly, details are not described herein.
Referring to Fig. 6 and Fig. 7, design as shown in the figure is also can be used in central connector 4.
Further, it referring to Fig. 9 and Figure 10, can also be set between the first oblique channel steel 306 and on the inside of the second oblique channel steel 307
Set the 4th channel steel 7.The opening direction of 4th channel steel 7 is identical as the vertical direction of tie point tangent line, the both ends point of the 4th channel steel 7
After not being welded with closed cover, it is bolted with the first oblique channel steel 306 and the second oblique channel steel 307.Pass through the 4th channel steel 7
Setting, further enhance the first intensity for allowing casting die.It can also be set between the oblique channel steel of third and on the inside of the 4th oblique channel steel
Set the 4th channel steel 7.The opening direction of 4th channel steel 7 is identical as the vertical direction of tie point tangent line, the both ends point of the 4th channel steel 7
After not being welded with closed cover, it is bolted with the oblique channel steel of third and the 4th oblique channel steel.Pass through setting for the 4th channel steel 7
It sets, further enhances the second intensity for allowing casting die.
Embodiment 3
The present embodiment is further limited on the basis of embodiment 1 and embodiment 2, rest part and embodiment 1
Same or similar with embodiment 2, details are not described herein.
Referring to Figure 11, a kind of construction method of the supporting construction of Soft Rock Roadway Floor Heave, method includes the following steps:
S1: the length direction on the bottom plate in tunnel and along tunnel digs clearly bottom plate, keeps bottom plate arc-shaped, at the bottom excavated
Encircle one layer concrete of upper berth, bottom is laid with to one layer of anchor net in advance along its length；
S2: it is laid with frame section；
S3: anchor pole 6 is set in the bottom of frame section；
S4: fill concrete makes its channel steel upper and lower surface form a circular arc along tunnel length direction in supporting construction
The anti-bottom arch of shape, finally re-lays one layer of anchor net on top again, is all installed in place after-pouring concrete in composite structure, makes to own
Structure be completely covered by the concrete, while concrete exceed original 10~20cm of bottom plate position.By in the complete coagulation of one-piece casting
After soil, due to two layers of anchor net of steelframe upper and lower surface, its entire anti-bottom curved arch plate is made to form an entirety, vertical base plate is upward
Stress controls a part by anchor pole first, and secondly remaining stress is dispersed by the anti-bottom arch shell of arc along surface of shell, most
Afterwards remaining stress along plate face reach portion, side after set by portion, side first allow casting die and second that casting die is allowed further to decompose, reach
The effect of traditional pressure relief groove release is arrived.The U-shaped of an anti-bottom arch is taken by the bottom in tunnel, changes power system direction, it will
Vertical stress is converted to other directions.
Further, in step S1 length direction downward cutting depth of the cross section midpoint in tunnel along tunnel be 100~
120cm reserves the horizontal segment for placing the first channel steel and the second channel steel at left and right sides of span length direction.
Preferably, in step S3, anchor pole 6 vertically downward is beaten by reserved bolthole on central connector 4；?
The anchor pole 6 with vertical direction in 45 degree of angles is beaten by reserved bolthole on one channel steel 1 and the second channel steel 2；It is oblique first
Channel steel 306, the second oblique channel steel 307, the oblique channel steel of third and the 4th oblique channel steel bottom side beaten by reserved bolthole and
Vertical direction is in the anchor pole 6 of 30 degree of angles.
Embodiments of the present invention are explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations
Mode.Even if to the present invention, various changes can be made, if these variations belong to the model of the claims in the present invention and its equivalent technologies
Within enclosing, then still fall within the protection scope of the present invention.
Claims (8)
1. a kind of supporting construction of Soft Rock Roadway Floor Heave characterized by comprising frame section and several anchor poles；
The frame section includes: the first channel steel, the second channel steel, first casting die, second is allowed to allow casting die, several central connectors,
Three channel steels；
First channel steel, second channel steel are arranged in parallel；
The central connector is set between first channel steel, second channel steel, and the central connector is located at institute
The lower section of horizontal plane where stating the first channel steel, second channel steel；
The third channel steel is respectively connected between the adjacent central connector；
Described first allows casting die to include first horizontal segment channel steel, the first oblique channel steel, the second oblique channel steel；
The first end of the first horizontal segment channel steel and first channel steel are connected, the first end of the first oblique channel steel, institute
The first end for stating the second oblique channel steel is connected with the second end of the first horizontal segment channel steel；The first oblique channel steel, institute
It states the second oblique channel steel and respectively corresponds the two adjacent central connectors, the second end of the first oblique channel steel is corresponding
The central connector be connected, the corresponding central connector of the second end of the second oblique channel steel be connected；
Described second allows casting die to include the second horizontal segment channel steel, the oblique channel steel of third, the 4th oblique channel steel；
The first end of the second horizontal segment channel steel and second channel steel are connected, the first end of the oblique channel steel of third, institute
The first end for stating the 4th oblique channel steel is connected with the second end of the second horizontal segment channel steel；The oblique channel steel of the third, institute
It states the 4th oblique channel steel and respectively corresponds the two adjacent central connectors, the second end of the oblique channel steel of third is corresponding
The central connector be connected, the corresponding central connector of the second end of the 4th oblique channel steel be connected；
The frame section is reserved with several boltholes, and the anchor pole is set to the bottom side of the frame section by the bolthole.
2. the supporting construction of Soft Rock Roadway Floor Heave as described in claim 1, which is characterized in that described first allows the casting die to further include
First channel steel set, the first channel steel set are connected with first channel steel and the first horizontal segment channel steel respectively；Described second
Allow casting die to further include the second channel steel set, second channel steel set respectively with second channel steel and the second horizontal segment channel steel phase
Even.
3. the supporting construction of Soft Rock Roadway Floor Heave as claimed in claim 2, which is characterized in that the first horizontal segment channel steel
Head end is welded with the first closed cover；
Corresponding bolt slot is provided on the first channel steel set and first horizontal segment channel steel；
The top surface that the first channel steel set is connected with the first horizontal segment channel steel is welded with two steel bars, and the steel bar is away from described
The end of first channel steel set top surface is threaded, and is cased with spring on the steel bar；
The steel bar passes through first closed cover and is limited by bolt to the first horizontal segment channel steel；
First channel steel set and the first horizontal segment channel steel by the way that the bolt of corresponding bolt slot connects；
First channel steel set top is welded with the second closed cover；
The head end of the second horizontal segment channel steel is welded with third closed cover；
Corresponding bolt slot is provided on the second channel steel set and the second horizontal segment channel steel；
The top surface that the second channel steel set is connected with the second horizontal segment channel steel is welded with two steel bars, and the steel bar is away from described
The end of second channel steel set top surface is threaded, and is cased with spring on the steel bar；
The steel bar passes through the third closed cover and is limited by bolt to the second horizontal segment channel steel；
Second channel steel set and the second horizontal segment channel steel by the way that the bolt of corresponding bolt slot connects；
Second channel steel set top is welded with the 4th closed cover.
4. the supporting construction of Soft Rock Roadway Floor Heave as described in claim 1, which is characterized in that the central connector includes upper
Cage plate and lower cage plate, the upper cage plate and the lower cage plate cooperation are to form six channel steel sets.
5. the supporting construction of Soft Rock Roadway Floor Heave as described in claim 1, which is characterized in that the anchor pole is respectively arranged at institute
State the bottom side of the first channel steel, the bottom side of second channel steel, the bottom side of the central connector, the first oblique channel steel bottom
Side, the bottom side of the second oblique channel steel, the bottom side of the oblique channel steel of the third and the 4th oblique channel steel bottom side.
6. a kind of construction method of the supporting construction of Soft Rock Roadway Floor Heave, which is characterized in that method includes the following steps:
S1: the length direction on the bottom plate in the tunnel and along the tunnel digs clearly bottom plate, keeps the bottom plate arc-shaped, is digging
Bottom, is laid with one layer of anchor net by bottom arch one layer concrete of upper berth dug in advance along its length；
S2: the frame section being laid in claim 1；
S3: the anchor pole is set in the bottom of the frame section；
S4: fill concrete makes its channel steel upper and lower surface form one along the tunnel length direction in the supporting construction
Arc-shaped anti-bottom arch, finally re-lays one layer of anchor net on top again, is all installed in place after-pouring coagulation in the composite structure
Soil is completely covered by the concrete all structures, while concrete exceeds original 10~20cm of bottom plate position.
7. the construction method of the supporting construction of Soft Rock Roadway Floor Heave according to claim 6, which is characterized in that the step
The depth that length direction of the cross section midpoint in tunnel described in S1 along the tunnel is dug downwards is 100~120cm, span length
The horizontal segment for placing first channel steel and second channel steel is reserved at left and right sides of direction.
8. the construction method of the supporting construction of Soft Rock Roadway Floor Heave according to claim 7, which is characterized in that the step
In S3, the anchor pole vertically downward is beaten by reserved bolthole on the central connector；In first channel steel and
The anchor pole with vertical direction in 45 degree of angles is beaten by reserved bolthole on second channel steel；It is oblique described first
Channel steel, the second oblique channel steel, the oblique channel steel of the third and the 4th oblique channel steel bottom side pass through reserved anchor pole
The anchor pole with vertical direction in 30 degree of angles is beaten in hole.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114046160A (en) * | 2021-11-04 | 2022-02-15 | 西山煤电(集团)有限责任公司 | Stress transfer reverse suspension combined supporting structure for treating floor heave of coal mine roadway |
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| CN203756206U (en) * | 2014-03-19 | 2014-08-06 | 山东科技大学 | Novel soft-rock roadway floor heave governing structure |
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| CN207111121U (en) * | 2017-05-12 | 2018-03-16 | 贵州理工学院 | A kind of anti-pucking device of coal mine roadway |
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| CN104047614A (en) * | 2014-07-15 | 2014-09-17 | 山东科技大学 | Supporting method for high-expansion argillization soft rock roadway replacement |
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| CN206129285U (en) * | 2016-10-27 | 2017-04-26 | 山东科技大学 | Deep soft rock roadway under high stress crossover point supporting construction |
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| CN108019228A (en) * | 2018-01-17 | 2018-05-11 | 安徽理工大学 | A kind of flexibility allow pressure improvement floor lift in gallery combined retaining structure and its construction method |
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| CN109681237B (en) | 2020-04-28 |
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