CN108019228A - A kind of flexibility allow pressure improvement floor lift in gallery combined retaining structure and its construction method - Google Patents
A kind of flexibility allow pressure improvement floor lift in gallery combined retaining structure and its construction method Download PDFInfo
- Publication number
- CN108019228A CN108019228A CN201810042515.6A CN201810042515A CN108019228A CN 108019228 A CN108019228 A CN 108019228A CN 201810042515 A CN201810042515 A CN 201810042515A CN 108019228 A CN108019228 A CN 108019228A
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- CN
- China
- Prior art keywords
- antiarch
- flexibility
- cushion cap
- allows
- floor
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
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- 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
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
- E21D11/22—Clamps or other yieldable means for interconnecting adjacent arch members either rigidly, or allowing arch member parts to slide when subjected to excessive pressure
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- 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
- E21D20/021—Grouting with inorganic components, e.g. cement
Abstract
The present invention provides the combined retaining structure and its construction method for the improvement floor lift in gallery that a kind of flexibility allows pressure, it is characterised in that it includes flexibility allows fill concrete between pressure device, bar frame antiarch device, frame, floor grouting anchor pole, FLOOR ANCHOR and bottom plate to excavate six, position part；Bottom plate has been excavated according to construction method and has excavated position, excavates out the cushion cap and antiarch groove on bottom plate respectively；Pressure device is allowed to be placed on cushion cap flexibility, bar frame antiarch device is placed in the antiarch groove that has excavated and both ends and is welded in the flexible lateral wall for allowing pressure device, is subsequently filled fill concrete between frame so that it is concordant with back-plane design face absolute altitude and be integrally incorporated in bar frame antiarch device interior；Allowed in flexibility on pressure device and equidistantly set up floor grouting anchor pole and grouting and reinforcing along its radial direction, allowed the outside plate of pressure device to arrange FLOOR ANCHOR also cross the flexibility at both ends, complete the installation of overall combined retaining structure.
Description
Technical field
The present invention relates to Roadway Support Technology field, the joint of the improvement floor lift in gallery of pressure is allowed more particularly to a kind of flexibility
Supporting construction and its construction method.
Background technology
With the increase of coal mining depth, the geological conditions residing for coal mine roadway also becomes increasingly complex, especially soft
Under the conditions of rock, its supporting difficulty bigger.And soft rock has classification, swelling soft-rock is exactly one of representative, and dilatancy
Soft-rock tunnel is than other kinds of Deformation in Soft Rock Tunnel more it is apparent that bottom distension is larger.Local Weak support theoretical research shows bottom
Distension phenomenon is to induce the principal element of roadway damage, therefore it is particularly important that improvement bottom distension phenomenon.
But in existing bottom distension resolution, bottom plate anchor pole, FLOOR ANCHOR are usually set, open up gas pressure relief slot, slip casting
Reinforce, the methods of underplate concrete antiarch, arrangement metal truss and shape steel bracket is set.But in soft-rock tunnel smashed to pieces
In, since crustal stress is larger, the above-mentioned method for protecting support of single use is ineffective, even if wherein certain several scheme effect are applied in combination
Fruit appoint it is so not good enough, therefore propose a kind of flexibility allow pressure improvement floor lift in gallery combined retaining structure and its construction method, realize
Multiple scheme is applied in combination, and supporting construction is simple, easy for construction, significant effect.
The content of the invention
For the deficiency of existing method, the combined supporting knot of the improvement floor lift in gallery of pressure is allowed the present invention provides a kind of flexibility
Structure and its construction method, the scheme provided is simple and feasible, can effectively administer the bottom distension phenomenon in swelling soft-rock tunnel, protects
Hinder the safe handling in tunnel.
To achieve the above object, the present invention is achieved by the following technical programs：
A kind of flexibility allow pressure improvement floor lift in gallery combined retaining structure and its construction method, it is characterised in that including
Bar frame antiarch device, flexibility allow fill concrete between pressure device, frame, bottom plate to excavate position, FLOOR ANCHOR and bottom plate note
Starch six parts of anchor pole；Excavate the three row cushion cap and two row on the bottom plate excavation position in advance along tunnel direction of advance
The antiarch groove, the three row cushion caps are equally spaced along span length direction, and end two arranges the cushion cap and abuts tunnel two
Side of side bottom, the two row antiarch grooves are arranged between the three row cushion cap；Pressure device is allowed to be placed on the cushion cap flexibility,
The bar frame antiarch device is placed in the antiarch groove that has excavated and both ends are connected to the flexibility and allow pressure device
Lateral wall, be subsequently filled fill concrete between the frame and cause it concordant with back-plane design face absolute altitude and by the bar frame
In antiarch device is integrally incorporated in；Allowed in the flexibility and equidistantly set up the good floor grouting anchor on pressure device along its radial direction
Bar and grouting and reinforcing, arrange the FLOOR ANCHOR also cross the flexible outside plate for allowing pressure device described in both ends, complete overall
The installation of combined retaining structure.
Further, the bar frame antiarch device, including minor arc muscle, secondary arc muscle, dowel, crane span structure muscle and longitudinal direction
Muscle；The rack main element of the bar frame antiarch device is made of the dowel, the crane span structure muscle and the longitudinal rib；
The longitudinal rib is equidistantly divided at 4 points, and the dowel has four and its distal point is respectively welded at the longitudinal rib left end
Point, a quarter point, at 3/4ths points and right endpoint, the head-end of two dowels of left end is connected, two institutes of right end
The head-end for stating dowel is connected so that the dowel and the longitudinal rib are in approximately the same plane；The crane span structure muscle is arc,
The left end point of the crane span structure muscle is welded in the end attachment of two dowels of left end, right endpoint is welded in right end two
The end attachment of the dowel, arc midpoint are connected to the half point of the longitudinal rib, it is formed the reinforcing bar
The main element of rack antiarch device；The minor arc muscle and the secondary arc muscle middle part for arc and with the antiarch groove radian
It coincide, end is straight to take the side for being placed on the cushion cap；The minor arc muscle has three, respectively from the longitudinal rib left end point, two
/ a little and at right endpoint pass through, the secondary arc muscle has two, is brought out into the open respectively from the dowel connecting pin at left and right end
Cross；By the rack main element direction that the dowel, the crane span structure muscle and the longitudinal rib are formed and the minor arc muscle and institute
It is vertical and anti-along the radian of the minor arc muscle and secondary arc muscle arrangement, the whole bar frame of composition to state time arc muscle direction
Encircle device.
Further, the flexibility allows pressure device, including channel steel, small sleeve, big sleeve, reinforcement spring and rubber block；Institute
Stating channel steel has two pieces and groove are opposite to be placed in parallel, along tunnel direction of advance arrangement in column；Described small sleeve one end is welded in
The channel steel groove inner wall of side, the other end are inserted in one end of the big sleeve and under pressure can be along described big
The inner wall of sleeve slides, and the other end of the big sleeve is welded in the channel steel groove inner wall of opposite side, while described small
The outer ring of sleeve and the big sleeve has surround a circle reinforcement spring and the reinforcement spring both ends are also welded in both sides
The channel steel groove inner wall is to prevent the small sleeve and the big sleeve laterally twists off or out of plumb when the small sleeve is pressurized
Slided along the inner wall of the big sleeve；The above-mentioned big sleeve assembled, the small sleeve and the reinforcement spring device
Constituting the flexibility allows the main body of pressure device to allow splenium part, and main body makes splenium part equidistant along the direction of advance of the channel steel
Arrangement；The rubber block is finally filled into vacancy between the channel steel, the whole flexibility is formed and allows pressure device.
Further, the bottom plate excavates position, including cushion cap and antiarch groove；Side bottom of the cushion cap along roadway's sides
Position starts to excavate, and three row are equally spaced along span length, and end two is arranged during the cushion cap abuts and be slightly less than with side bottom
Between position the cushion cap；The antiarch groove is arranged between the three row cushion cap, and the radian of antiarch is according to tunnel geological conditions
Determine.
Further, the present invention also provides a kind of flexibility allow pressure improvement floor lift in gallery combined retaining structure and its construction
Method, including following construction method：
A. according to the design drawing of drift section, drift section is excavated out, excavates out the bottom successively at bottom plate position
Plate excavates the cushion cap at position and the antiarch groove；The cushion cap at the roadway's sides and contacts baseplate excavate, along
Span length equidistantly distributed and excavate three groups altogether, cushion cap width described in two groups of end is slightly less than one group middle described hold
Platform, the cushion cap allow pressure device to place the flexibility；Then antiarch groove described in two groups is excavated between the cushion cap, it is described
Antiarch groove radian is depending on the concrete condition of tunnel, to place the antiarch part of the bar frame antiarch device；
B. after the completion of the bottom plate excavates the cushion cap at position and the antiarch groove excavates, the flexibility is allowed into press fitting
Storing is placed on the cushion cap；The flexibility on the cushion cap of both sides allows pressure device to be close to roadway's sides side wall and places, institute
One section of the opposite side indwelling of cushion cap is stated to place the straight position in end of the bar frame antiarch device；Held described in middle
The flexibility on platform allows pressure device to be positioned over the middle part of the cushion cap, and one section of both sides indwelling is placing the bar-mat reinforcement
The straight position in end of frame antiarch device；
C. the flexibility allows pressure device to be divided into two parts processing, is positioned over the flexibility described in both sides on cushion cap and allows press fitting
The web of the channel steel in the outside put reserves the FLOOR ANCHOR and passes through hole and helping bottom corresponding position by the base angle
The hole of anchor pole is drilled with place, and the flexibility being positioned on the middle cushion cap allows pressure device to be not required to reserving hole；Along lane
The flexibility of road direction of advance arrangement allows what the big sleeve, the small sleeve and the reinforcement spring of pressure device formed to allow
Between pressure system, reserve the hole of the floor grouting anchor pole according to design and be drilled with place on the cushion cap in advance；Remaining
The filling upper rubber block in position ensures that the flexibility allows the flexibility of pressure device；
D. the FLOOR ANCHOR and the floor grouting rockbolt installation into respective reserving hole position and are anchored, at the same time
Grouting and reinforcing is carried out to the floor grouting anchor pole；The FLOOR ANCHOR and the floor grouting rockbolt installation are in same section
On, and the flexibility allows the big sleeve of pressure device, the small sleeve and the reinforcement spring form allows pressure system and institute
The FLOOR ANCHOR and the floor grouting anchor pole are stated along tunnel direction of advance arranged crosswise, forms plum blossom-shaped arrangement shape；
E. after the completion of above-mentioned steps A~D, the bar frame antiarch device is installed；By the bar frame antiarch device
Antiarch position be positioned in the antiarch groove, the radian at antiarch position coincide with the antiarch groove radian, the bar frame
The sidepiece that the end flat part bit parallel overlap joint of antiarch device is positioned over the cushion cap reserves section and with being placed on the cushion cap
The flexibility allows the sidewall weld of pressure device；Taken in the end flat part bit parallel of the bar frame antiarch device welding position
Connect the sidepiece for being positioned over the cushion cap and the flexibility with being placed on the cushion cap allows the big sleeve, described small of pressure device
The lateral wall for pressure system that what sleeve and the reinforcement spring were formed allow, realizes and effectively allows pressure；
F. after all components are installed in place, fill concrete between the frame is filled in the antiarch groove so that the frame
Between fill concrete the gap on the bar frame antiarch device periphery is filled full, while cause concreting to reach tunnel
The designed elevation of bottom plate section, allows pressure device to handle, can brush Huang if necessary without to the flexibility on the cushion cap
Oil is to prevent from corroding；
Compared with prior art, the technique effect that possesses of the present invention is：
A kind of above-mentioned flexibility allows the combined retaining structure for administering floor lift in gallery of pressure and its construction method administering expansion
Property Soft Rock Roadway Floor Heave when, the problem of breaking surrounding rock of roadway floor is jacked up by the extruding force at both ends can be efficiently solved, led to
Cross it is flexible allow pressure allow press manage and frame between armored concrete antiarch effect so that roadway floor be in stable state, change
Shape is small, greatly improves work efficiency, and reduces repair of laneway rate.
Brief description of the drawings
Fig. 1 be a kind of flexibility allow pressure improvement floor lift in gallery the total schematic diagram of combined retaining structure；
Fig. 2 be a kind of flexibility allow pressure improvement floor lift in gallery combined retaining structure schematic front view；
Fig. 3 be a kind of flexibility allow pressure improvement floor lift in gallery combined retaining structure schematic top plan view；
Fig. 4 be a kind of flexibility allow pressure improvement floor lift in gallery combined retaining structure bar frame antiarch schematic diagram；
Fig. 5 is that a kind of flexibility allows the combined retaining structure flexibility of the improvement floor lift in gallery of pressure to allow pressure device schematic diagram；
Fig. 6 is that a kind of flexibility allows the combined retaining structure bottom plate of the improvement floor lift in gallery of pressure to excavate position front view；
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
All other embodiments obtained without creative efforts, belong to the scope of protection of the invention.
With reference to Fig. 1 to Fig. 6, the present invention provides a kind of flexibility allow the improvement floor lift in gallery of pressure combined retaining structure and its
Construction method, it is characterised in that allow fill concrete 3, bottom plate between pressure device 2, frame including bar frame antiarch device 1, flexibility
Excavate 6 six position 4, FLOOR ANCHOR 5 and floor grouting anchor pole parts；The bottom plate is excavated in advance along tunnel direction of advance
The three row cushion caps 41 and two excavated on position 4 arrange the antiarch groove 42, and three arrange the cushion caps 41 along span length direction
It is equally spaced, end two arranges the cushion cap 41 and is arranged in against roadway's sides side bottom, the two row antiarch grooves 42 described in three row
Between cushion cap 41；Pressure device 2 is allowed to be placed on the cushion cap 41 flexibility, the bar frame antiarch device 1 is placed in out
In the antiarch groove 42 that has dug and both ends are connected to the flexibility and allow the lateral wall of pressure device 2, are subsequently filled between the frame
Fill concrete 3 causes it concordant with back-plane design face absolute altitude and is integrally incorporated in the bar frame antiarch device 1 interior；
The flexibility allows equidistantly sets up the good floor grouting anchor pole 6 and grouting and reinforcing on pressure device 1 along its radial direction, also cross
The flexible outside plate for allowing pressure device 2 arranges the FLOOR ANCHOR 5 described in both ends, completes the installation of overall combined retaining structure.
Further, the bar frame antiarch device 1, including minor arc muscle 11, secondary arc muscle 12, dowel 13, crane span structure muscle
14 and longitudinal rib 15；The rack main element of the bar frame antiarch device 1 is by the dowel 13,14 and of crane span structure muscle
The longitudinal rib 15 forms；The longitudinal rib 15 is equidistantly divided at 4 points, and the dowel 13 has four and its distal point is distinguished
It is welded on 15 left end point of longitudinal rib, a quarter point, at 3/4ths points and right endpoint, the dowel 13 of left end two
Head-end be connected, the head-end of the dowel 13 of right end two is connected so that the dowel 13 and the longitudinal rib 15
In approximately the same plane；The crane span structure muscle 14 is arc, and the left end point of the crane span structure muscle 14 is welded in two connections of left end
The end attachment of muscle 13, right endpoint are welded in the end attachment of the dowel 13 of right end two, and arc midpoint is connected to
The half point of the longitudinal rib 15, makes it form the main element of the bar frame antiarch device 1；The minor arc muscle 11
With secondary 12 middle part of arc muscle arc and to coincide with 42 radian of antiarch groove, end is straight to take and is placed on the cushion cap 41
Side；The minor arc muscle 11 has three, is passed through respectively at 15 left end point of longitudinal rib, half point and right endpoint,
The secondary arc muscle 12 has two, is passed through respectively from 13 connection end point of the dowel at left and right end；By the dowel 13, institute
State rack main element direction and the minor arc muscle 11 and secondary 12 side of arc muscle that crane span structure muscle 14 and the longitudinal rib 15 are formed
To vertically and along the radian of the minor arc muscle 11 and the secondary arc muscle 12 arranging, the whole bar frame antiarch device is formed
1。
Further, the flexibility allows pressure device 2, including channel steel 21, small sleeve 22, big sleeve 23,24 and of reinforcement spring
Rubber block 25；The channel steel 21 has two pieces and groove is placed in parallel relatively, along tunnel direction of advance arrangement in column；The small set
22 one end of cylinder are welded in 21 groove inner wall of the channel steel of side, and the other end is inserted in one end of the big sleeve 23 and makees in pressure
It can be slided with lower along the inner wall of the big sleeve 23, the other end of the big sleeve 23 is welded in the channel steel of opposite side
21 groove inner walls, while the circle reinforcement spring 24 and institute have been surround in the outer ring of the small sleeve 22 and the big sleeve 23
State 24 both ends of reinforcement spring and be also welded in 21 groove inner walls of the channel steel of both sides to prevent the small sleeve 22 and the big set
Out of plumb is slided along the inner wall of the big sleeve 23 when cylinder 23 laterally twists off or the small sleeve 22 is pressurized；It is above-mentioned to assemble
The big sleeve 23, the small sleeve 22 and 24 device of the reinforcement spring, which constitute the flexibility, allows the main body of pressure device 2 to allow
Splenium part, main body allow splenium part to be equally spaced along the direction of advance of the channel steel 21；Finally the rubber block 25 is filled
Vacancy between the channel steel 21, forms the whole flexibility and allows pressure device 2.
Further, the bottom plate excavates position 4, including cushion cap 41 and antiarch groove 42；The cushion cap 41 is along tunnel two
The side bottom position of side starts to excavate, and is equally spaced three row along span length, end two arranges the cushion cap 41 with helping bottom to abut
And it is slightly less than the cushion cap 41 of middle part；The antiarch groove 42 is arranged between the three row cushion cap 41, the radian of antiarch
Determined according to tunnel geological conditions.
Further, the present invention also provides a kind of flexibility allow pressure improvement floor lift in gallery combined retaining structure and its construction
Method, including following construction method：
A. according to the design drawing of drift section, drift section is excavated out, excavates out the bottom successively at bottom plate position
Plate excavates the cushion cap 41 at position 4 and the antiarch groove 42；The cushion cap 41 at the roadway's sides and contacts baseplate open
Dig, excavate along span length equidistantly distributed and altogether three groups, 41 width of cushion cap described in two groups of end is slightly less than one group middle
The cushion cap 41, the cushion cap 41 allows pressure device 2 to place the flexibility；Then two groups are excavated between the cushion cap 41
The antiarch groove 42,41 radian of antiarch groove is depending on the concrete condition of tunnel, to place the bar frame antiarch device 1
Antiarch part；
B. after the completion of the bottom plate excavates the cushion cap 41 at position 4 and the antiarch groove 42 excavates, by the flexibility
Pressure device 2 is allowed to be positioned on the cushion cap 41；The flexibility on the cushion cap 41 of both sides allows pressure device 2 to be close to roadway's sides
Wall is helped to place, one section of the opposite side indwelling of the cushion cap 41 is placing the end flat part of the bar frame antiarch device 1
Position；The flexibility on the middle cushion cap 41 allows pressure device 2 to be positioned over the middle part of the cushion cap 41, both sides indwelling one
Section is placing the straight position in end of the bar frame antiarch device 1；
C. the flexibility allows pressure device 2 to be divided into two parts processing, is positioned over the flexibility described in both sides on cushion cap 41 and allows
The web of the channel steel 21 in the outside of pressure device 2 reserves the FLOOR ANCHOR 5 and passes through hole and incited somebody to action in side bottom corresponding position
The hole of the FLOOR ANCHOR 6 is drilled with place, and the flexibility being positioned on the middle cushion cap 41 allows pressure device 2 to be not required to reserve
Hole；The flexibility arranged along tunnel direction of advance allows the big sleeve 23 of pressure device 2, the small sleeve 22 and described
What reinforcement spring 24 was formed allows between pressure system, and the hole of the floor grouting anchor pole 5 is reserved and in advance described according to design
It is drilled with cushion cap 41 in place；Remaining position upper rubber block 25 of filling ensures that the flexibility allows the flexibility of pressure device 2；
D. the FLOOR ANCHOR 6 and the floor grouting anchor pole 5 are installed into respective reserving hole position and anchored, together
When to the floor grouting anchor pole 5 carry out grouting and reinforcing；The FLOOR ANCHOR 6 and the floor grouting anchor pole 5 are installed on same
On a section, and the flexibility allows what the big sleeve 23, the small sleeve 22 and the reinforcement spring 24 of pressure device 2 were formed
Pressure system is allowed, along tunnel direction of advance arranged crosswise, to form plum with the FLOOR ANCHOR 6 and the floor grouting anchor pole 5
Flower-shaped arrangement shape；
E. after the completion of above-mentioned steps A~D, the bar frame antiarch device 1 is installed；By the bar frame antiarch device
1 antiarch position is positioned in the antiarch groove 42, and the radian at antiarch position coincide with 42 radian of antiarch groove, the reinforcing bar
The sidepiece that the end flat part bit parallel overlap joint of rack antiarch device 1 is positioned over the cushion cap 41 reserves section and with being placed in described hold
The flexibility on platform 41 allows the sidewall weld of pressure device 2；Welding position is straight in the end of the bar frame antiarch device 1
Position is parallel to overlap the sidepiece for being positioned over the cushion cap 41 and the flexibility with being placed on the cushion cap 41 allows the institute of pressure device 2
State big sleeve 23, the small sleeve 22 and the reinforcement spring 24 are formed allows the lateral wall of pressure system, realize and effectively allow pressure；
F. after all components are installed in place, the fill concrete 3 between the filling frame in the antiarch groove 42 so that described
Fill concrete 3 fills the gap on 1 periphery of bar frame antiarch device full between frame, while concreting is reached
The designed elevation of roadway floor section, allows pressure device 2 to handle, if necessary may be used without to the flexibility on the cushion cap 41
Butter is brushed to prevent from corroding.
It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row
His property includes, so that process, method, article or equipment including a series of elements not only include those key elements, and
And other elements that are not explicitly listed are further included, or further include as this process, method, article or equipment institute inherently
Key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including institute
State in process, method, article or the equipment of key element that also there are other identical element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
The present invention is described in detail, it will be understood by those of ordinary skill in the art that：It still can be to foregoing each implementation
Technical solution described in example is modified, or carries out equivalent substitution to which part technical characteristic；And these modification or
Replace, the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical solution.
Claims (5)
1. a kind of flexibility allow pressure improvement floor lift in gallery combined retaining structure and its construction method, it is characterised in that including steel
Muscle rack antiarch device 1, flexibility allow fill concrete 3 between pressure device 2, frame, bottom plate to excavate position 4, FLOOR ANCHOR 5 and bottom plate
6 six parts of grouted anchor bar；Excavate the three row cushion caps 41 on the bottom plate excavation position 4 in advance along tunnel direction of advance
With the two row antiarch grooves 42, the three row cushion caps 41 are equally spaced along span length direction, and end two arranges the cushion cap
41 are arranged between the three row cushion cap 41 against roadway's sides side bottom, the two row antiarch grooves 42；The flexibility is allowed into press fitting
Put 2 to be placed on the cushion cap 41, the bar frame antiarch device 1 is placed in the antiarch groove 42 excavated and both ends
It is connected to the flexibility and allows the lateral wall of pressure device 2, fill concrete 3 is so that itself and back-plane design face between being subsequently filled the frame
Absolute altitude is concordant and is integrally incorporated in the bar frame antiarch device 1 interior；Allowed in the flexibility on pressure device 1 along its radial direction
The good floor grouting anchor pole 6 and grouting and reinforcing are equidistantly set up, also cross the flexible outside steel for allowing pressure device 2 described in both ends
Plate arranges the FLOOR ANCHOR 5, completes the installation of overall combined retaining structure.
2. a kind of flexibility as claimed in claim 1 allows the combined retaining structure and its construction method of the improvement floor lift in gallery of pressure,
It is characterized in that, the bar frame antiarch device 1, including minor arc muscle 11, secondary arc muscle 12, dowel 13, crane span structure muscle 14 and vertical
To muscle 15；The rack main element of the bar frame antiarch device 1 is by the dowel 13, the crane span structure muscle 14 and described vertical
Formed to muscle 15；The longitudinal rib 15 is equidistantly divided at 4 points, and the dowel 13 has four and its distal point is respectively welded at
15 left end point of longitudinal rib, a quarter point, at 3/4ths points and right endpoint, the head end of the dowel 13 of left end two
Point is connected, and the head-end of the dowel 13 of right end two is connected so that the dowel 13 and the longitudinal rib 15 are same
A plane；The crane span structure muscle 14 is arc, and the left end point of the crane span structure muscle 14 is welded in the dowel 13 of left end two
End attachment, right endpoint are welded in the end attachment of the dowel 13 of right end two, and arc midpoint is connected to described vertical
To the half point of muscle 15, it is set to form the main element of the bar frame antiarch device 1；The minor arc muscle 11 and described
Secondary 12 middle part of arc muscle coincide for arc and with 42 radian of antiarch groove, and end is straight to take the side for being placed on the cushion cap 41
Side；The minor arc muscle 11 has three, is passed through respectively at 15 left end point of longitudinal rib, half point and right endpoint, described
Secondary arc muscle 12 has two, is passed through respectively from 13 connection end point of the dowel at left and right end；By the dowel 13, the bridge
Hang down with the minor arc muscle 11 and secondary 12 direction of arc muscle in the rack main element direction that frame muscle 14 and the longitudinal rib 15 are formed
Directly and along the radian of the minor arc muscle 11 and the secondary arc muscle 12 arrange, form the whole bar frame antiarch device 1.
3. a kind of flexibility as claimed in claim 1 allows the combined retaining structure and its construction method of the improvement floor lift in gallery of pressure,
It is characterized in that, the flexibility allows pressure device 2, including channel steel 21, small sleeve 22, big sleeve 23, reinforcement spring 24 and rubber block
25；The channel steel 21 has two pieces and groove is placed in parallel relatively, along tunnel direction of advance arrangement in column；The small sleeve 22 1
End is welded in 21 groove inner wall of the channel steel of side, and the other end is inserted in one end of the big sleeve 23 and under pressure may be used
To be slided along the inner wall of the big sleeve 23, the other end of the big sleeve 23 is welded in 21 groove of the channel steel of opposite side
Inner wall, while a circle reinforcement spring 24 and the reinforcement have been surround in the outer ring of the small sleeve 22 and the big sleeve 23
24 both ends of spring are also welded in 21 groove inner walls of the channel steel of both sides to prevent the small sleeve 22 and 23 side of big sleeve
Slided to out of plumb when twisting off or the small sleeve 22 is pressurized along the inner wall of the big sleeve 23；It is above-mentioned assemble it is described big
Sleeve 23, the small sleeve 22 and 24 device of the reinforcement spring, which constitute the flexibility, allows the main body of pressure device 2 to allow splenium part,
Main body allows splenium part to be equally spaced along the direction of advance of the channel steel 21；The rubber block 25 is finally filled into the groove
Vacancy between steel 21, forms the whole flexibility and allows pressure device 2.
4. a kind of flexibility as claimed in claim 1 allows the combined retaining structure and its construction method of the improvement floor lift in gallery of pressure,
It is characterized in that, the bottom plate excavates position 4, including cushion cap 41 and antiarch groove 42；Side of the cushion cap 41 along roadway's sides
Bottom position starts to excavate, and three row are equally spaced along span length, and end two arranges the cushion cap 41 and abutted with side bottom and smaller
The cushion cap 41 in middle part；The antiarch groove 42 is arranged between the three row cushion cap 41, and the radian of antiarch is according to lane
Road geology conditional decision.
5. a kind of flexibility as described in Claims 1 to 4 allow pressure improvement floor lift in gallery combined retaining structure and its construction party
Method, it is characterised in that including following construction method：
A. according to the design drawing of drift section, drift section is excavated out, the bottom plate is excavated out successively at bottom plate position and opens
Dig the cushion cap 41 at position 4 and the antiarch groove 42；The cushion cap 41 at the roadway's sides and contacts baseplate excavate, edge
Span length equidistantly distributed and excavate three groups altogether, 41 width of cushion cap described in two groups of end is slightly less than the described of one group of centre
Cushion cap 41, the cushion cap 41 allow pressure device 2 to place the flexibility；Then excavated between the cushion cap 41 anti-described in two groups
Encircle groove 42,41 radian of antiarch groove is depending on the concrete condition of tunnel, to place the antiarch of the bar frame antiarch device 1
Part；
B. after the completion of the bottom plate excavates the cushion cap 41 at position 4 and the antiarch groove 42 excavates, the flexibility is allowed into pressure
Device 2 is positioned on the cushion cap 41；The flexibility on the cushion cap 41 of both sides allows pressure device 2 to be close to roadway's sides side wall
Place, one section of the opposite side indwelling of the cushion cap 41 is placing the straight position in end of the bar frame antiarch device 1；In
Between the cushion cap 41 on the flexibility allow pressure device 2 to be positioned over the middle part of the cushion cap 41, one section of both sides indwelling with
To place the straight position in end of the bar frame antiarch device 1；
C. the flexibility allows pressure device 2 to be divided into two parts processing, is positioned over the flexibility described in both sides on cushion cap 41 and allows press fitting
Put the channel steel 21 in 2 outside web reserve the FLOOR ANCHOR 5 pass through hole and side bottom corresponding position will described in
The hole of FLOOR ANCHOR 6 is drilled with place, and the flexibility being positioned on the middle cushion cap 41 allows pressure device 2 to be not required to preformed hole
Hole；The flexibility arranged along tunnel direction of advance allow the big sleeve 23 of pressure device 2, the small sleeve 22 and it is described plus
What strong spring 24 was formed allows between pressure system, reserves the hole of the floor grouting anchor pole 5 according to design and is held in advance described
It is drilled with platform 41 in place；Remaining position upper rubber block 25 of filling ensures that the flexibility allows the flexibility of pressure device 2；
D. the FLOOR ANCHOR 6 and the floor grouting anchor pole 5 are installed into respective reserving hole position and anchored, at the same it is right
The floor grouting anchor pole 5 carries out grouting and reinforcing；The FLOOR ANCHOR 6 and the floor grouting anchor pole 5 are installed on same disconnected
On face, and the flexibility allows the pressure that allows that the big sleeve 23 of pressure device 2, the small sleeve 22 and the reinforcement spring 24 form
System, along tunnel direction of advance arranged crosswise, forms plum blossom-shaped with the FLOOR ANCHOR 6 and the floor grouting anchor pole 5
Arrange shape；
E. after the completion of above-mentioned steps A~D, the bar frame antiarch device 1 is installed；By the bar frame antiarch device 1
Antiarch position is positioned in the antiarch groove 42, and the radian at antiarch position coincide with 42 radian of antiarch groove, the bar-mat reinforcement
The sidepiece that the end flat part bit parallel overlap joint of frame antiarch device 1 is positioned over the cushion cap 41 reserves section and with being placed in the cushion cap
The flexibility on 41 allows the sidewall weld of pressure device 2；End flat part of the welding position in the bar frame antiarch device 1
Bit parallel overlap joint is positioned over the sidepiece of the cushion cap 41 and the flexibility with being placed on the cushion cap 41 allows described in pressure device 2
The lateral wall for pressure system that what big sleeve 23, the small sleeve 22 and the reinforcement spring 24 were formed allow, realizes and effectively allows pressure；
F. after all components are installed in place, the fill concrete 3 between the filling frame in the antiarch groove 42 so that between the frame
Fill concrete 3 fills in the gap on 1 periphery of bar frame antiarch device completely, while causes concreting to reach tunnel
The designed elevation of bottom plate section, allows pressure device 2 to handle, can brush if necessary without to the flexibility on the cushion cap 41
Butter is to prevent from corroding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810042515.6A CN108019228A (en) | 2018-01-17 | 2018-01-17 | A kind of flexibility allow pressure improvement floor lift in gallery combined retaining structure and its construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810042515.6A CN108019228A (en) | 2018-01-17 | 2018-01-17 | A kind of flexibility allow pressure improvement floor lift in gallery combined retaining structure and its construction method |
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| CN108019228A true CN108019228A (en) | 2018-05-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681237A (en) * | 2018-12-20 | 2019-04-26 | 上海应用技术大学 | A kind of supporting construction and construction method of Soft Rock Roadway Floor Heave |
| CN114151108A (en) * | 2021-11-18 | 2022-03-08 | 山东济矿鲁能煤电股份有限公司阳城煤矿 | Support method for soft rock chamber bottom heave treatment |
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| CN106968687A (en) * | 2017-04-01 | 2017-07-21 | 湖南科技大学 | The closed annulus yield supporting device of half-edge coal seam stope drift active workings and method for protecting support |
| CN207905829U (en) * | 2018-01-17 | 2018-09-25 | 安徽理工大学 | A kind of flexibility allow pressure improvement floor lift in gallery combined retaining structure |
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| EP0046818A1 (en) * | 1980-09-02 | 1982-03-10 | GTG Gesteins- und Tiefbau GmbH | Sliding clamping assembly for mine roof support arches |
| CN103615273A (en) * | 2013-12-04 | 2014-03-05 | 山东大学 | Square steel confined concrete arch center wall back filling bolting-grouting support system and construction method |
| CN106223985A (en) * | 2016-10-10 | 2016-12-14 | 安徽理工大学 | The construction method of composite anchored net and this composite anchored net for administering distension at the bottom of deep-well high stress and soft rock mine roadway |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681237A (en) * | 2018-12-20 | 2019-04-26 | 上海应用技术大学 | A kind of supporting construction and construction method of Soft Rock Roadway Floor Heave |
| CN114151108A (en) * | 2021-11-18 | 2022-03-08 | 山东济矿鲁能煤电股份有限公司阳城煤矿 | Support method for soft rock chamber bottom heave treatment |
| CN114151108B (en) * | 2021-11-18 | 2024-03-22 | 山东济矿鲁能煤电股份有限公司阳城煤矿 | Soft rock chamber bottom drum treatment supporting method |
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Application publication date: 20180511 |