CN102373933A - Resistance-increasing pressure-resisting roadway support - Google Patents

Resistance-increasing pressure-resisting roadway support Download PDF

Info

Publication number
CN102373933A
CN102373933A CN201110292699XA CN201110292699A CN102373933A CN 102373933 A CN102373933 A CN 102373933A CN 201110292699X A CN201110292699X A CN 201110292699XA CN 201110292699 A CN201110292699 A CN 201110292699A CN 102373933 A CN102373933 A CN 102373933A
Authority
CN
China
Prior art keywords
support
brace summer
lag
leg
increases
Prior art date
Application number
CN201110292699XA
Other languages
Chinese (zh)
Inventor
于守东
魏华军
魏红
Original Assignee
于守东
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 于守东 filed Critical 于守东
Priority to CN201110292699XA priority Critical patent/CN102373933A/en
Publication of CN102373933A publication Critical patent/CN102373933A/en

Links

Abstract

The invention discloses a resistance-increasing pressure-resisting roadway support. The roadway support is in an inverted U shape and comprises a support beam on each of the two sides and a connection leg which is lapped between the upper ends of the two support beams through a U-shaped clamp fastening member; and a resistance-increasing device is arranged in the lapping area of the connection leg and the support leg on each side, so that relative movement between the connection leg and the support beams on the two sides is limited. Multiple first reinforcing plates are transversely arranged in the U-shaped groove of the support beam on each side so as to support the open end of the U-shaped groove; and multiple second reinforcing plates are transversely arranged in the U-shaped groove of the connection leg so as to support the open end of the U-shaped groove. The support can bear certain pressure, can not be deformed or damaged easily, and is suitable for various basic roadways of mines and the like, particularly suitable for the high-stress soft rock roadways or roadways susceptible to dynamic pressure; and if being combined with measures such as anchor rod leg locking, anchor rope reinforcing, backfill grouting (gap between the support and surrounding rock) and the like, the support has a better support effect.

Description

Increase impedance pressure type excavation support
Technical field
The present invention relates to a kind of impedance pressure type excavation support that increases.
Background technology
Roadway support and surrounding rock interaction achievement in research prove that supporting intensity is the key factor of control roadway surrounding rock drastic deformation, when having only supporting intensity greater than certain numerical value, could control the drastic deformation in tunnel effectively.And influence U shape steel bracket supporting intensity factor except U type steel model, processing and construction quality, also mainly containing following two factors needs to solve:
The U shape steel bracket is a kind of passive protecting, exists support shrinkage strain amount too fast excessive, and amount of contraction is wayward, the shortcoming that support force can not increase with amount of contraction.The torque that the size of U type stent support power and amount of contraction and U-shaped clip securing member are provided has direct relation, and is mainly locked the nut in the U-shaped clip securing member by manual work at the scene, down-hole, is difficult to guarantee that the moment of torsion that U-shaped clip securing member provides reaches requirement; Even the moment of torsion that U-shaped clip securing member provides reaches requirement, but to exist gap or lap-joint's processing to exist error to close stubble not tight owing to the lap-joint of adjacent beams, and it is tightr that the beam leg is combined; Thereby make U-shaped clip securing member loosening, cause the stent support resistance to descend and the deflection increase, the rock at roadway surrounding rock place is loosening, the distortion aggravation; Relaxation zone enlarges; The pressure that support bore increases, because U-shaped clip securing member is in loosening state all the time, can not help support to provide support power well; Support continues shrinkage strain; After after a while, overburden pressure has surpassed the opposing intensity of support, thereby causes deformation of timbering to damage;
In addition; There is the metaboly that enlarges or dwindle in the on-the-spot open side spacing at U shape steel bracket deformed damaged place of often finding in the down-hole; Sunykatuib analysis through model can know, before U shaped steel destroys, and the metaboly that occurs the open side pitch enlargement earlier or dwindle; This place's stress is concentrated more and is made further aggravation of distortion then, causes support to damage at last.The damage of this explanation U shaped steel is main with malformation destruction still, and U shaped steel open side then is its weak part.
Therefore, there is above defective in existing excavation support, and the support easy deformation is damaged.
Summary of the invention
Technical problem to be solved by this invention provides a kind of impedance pressure type excavation support that increases, and requires this excavation support can bear bigger pressure, is difficult for deformed damaged.
For solving the problems of the technologies described above; The invention provides a kind of impedance pressure type excavation support that increases; It is the inversion U-shaped; It comprises each brace summer of both sides, through the connection leg of U-shaped clip securing member overlap joint between two brace summers upper ends, the overlap joint zone of connection leg and every side brace summer all is provided with a drag device, so that the relative motion between connection leg and the supported on both sides beam obtains restriction.
For can concise description for the purpose of the problem, below the impedance pressure type excavation support that increases according to the invention be all abbreviated as this support.
When this support bears pressure overlap big, that cause connection leg and brace summer the possibility of relative motion is arranged; Because the effect of drag device; Relative motion between connection leg and the brace summer obtains significant limitation; Can deformed damaged improved this support integrated support power because bearing the increase of pressure easily.Therefore, this support can bear bigger pressure, is difficult for deformed damaged.
As optimization of the present invention, in setting opening one side that brace summer, connection leg be inverted U-shaped near this excavation support and being, outside setting opening one side that brace summer, connection leg be inverted U-shaped away from this excavation support and being;
The shape of cross section of brace summer, connection leg is a U-shaped, and the U-lag openend direction of brace summer, connection leg is pointed to the outside of this excavation support, and connection leg is placed in respectively in the U-lag of respective side brace summer with the two ends that the supported on both sides beam overlaps mutually;
Each drag device is that inside and outside arrangement and two of arranging in opposite directions increase stop block, and each increases stop block for carving piece;
Inboard that increases stop block and is positioned at the upper end of the inboard of connection leg corresponding to the homonymy brace summer, and this increases the inboard of the inclined-plane of stop block towards this excavation support, and this increases the upper end of the inclined-plane low side of stop block near the homonymy brace summer;
That of the outside increases the cell wall of U-lag blind end that stop block is positioned at the homonymy brace summer corresponding to the corresponding end of connection leg, and this increases the outside of the inclined-plane of stop block towards this excavation support, and this increases the corresponding termination of the inclined-plane low side of stop block near connection leg.
Utilization is carved piece as increasing stop block; Make when between connection leg and brace summer, having the space of relative motion trend, connection leg and brace summer lap-joint to become big; Carve piece and can fill the space well, stop the relative motion trend between connection leg and the brace summer, avoid U-shaped clip securing member loosening.Make this support can bear bigger pressure, be difficult for deformed damaged.
Specialize as of the present invention; Connection leg can be for being that the connection supporting leg of U-shaped forms through U-shaped clip securing member overlap joint by some shape of cross sections; The overlap joint location of adjacent connection supporting leg all is provided with inside and outside two of arranging and arranging in opposite directions and carves piece, so that the relative motion between the adjacent connection supporting leg obtains restriction.
As further optimization of the present invention, equal some first stiffeners of horizontally set in the U-lag of every side brace summer prop up down to the openend of first stiffener with this U-lag;
Some second stiffeners of horizontally set in the U-lag of connection leg or connection supporting leg prop up down to the openend of second stiffener with this U-lag.
The setting of stiffener makes this support when bearing bigger pressure, be difficult for deformed damaged.
This support is applicable to all kinds of basic tunnels such as mines, the tunnel that especially adapts to the high stressed soft rock tunnel or influenced by dynamic pressure, and anchor pole lock leg, anchor cable are reinforced as combining, measure such as (space between support and the country rock) filling and injecting slurry behind the wall, and its support effect is better.
Description of drawings
Fig. 1 is the front view of this support.
Fig. 2 is the stereogram that this support is seen from top to bottom.
Fig. 3 is the vertical view of this support.
Fig. 4 is the A-A cutaway view Amplified image among Fig. 3.
Fig. 5 is that enlarged diagram is analysed and observe by the D portion among Fig. 2.
The specific embodiment
Further specify this support below in conjunction with accompanying drawing and through the specific embodiment.
Referring to Fig. 1-Fig. 5:
This support is the inversion U-shaped; It comprises each brace summer 1 of both sides, through the connection leg 2 of U-shaped clip securing member 3 overlap joints between two brace summer 1 upper ends; The connection supporting leg 21 that connection leg 2 is a U-shaped by two shape of cross sections forms through U-shaped clip securing member 3 overlap joints; The overlap joint zone that connects supporting leg 21 and brace summer 1 is provided with a drag device, so that the relative motion that connects between supporting leg 21 and the brace summer 1 obtains restriction.
Set brace summer 1, connect in opening one side that supporting leg 21 is inverted U-shaped near this support is, set brace summer 1, connect outside opening one side that supporting leg 21 is inverted U-shaped away from this support is;
The shape of cross section of brace summer 1, connection supporting leg 21 is a U-shaped; The openend direction of the U-lag 212 of the U-lag 12 of brace summer 1, connection supporting leg 21 is pointed to the outside of this support, connects supporting leg 21 and is placed in the U-lag 12 of respective side brace summer 1 with the termination that brace summer 1 overlaps mutually;
Each drag device that connects the overlap joint zone of supporting leg 21 and brace summer 1 is that inside and outside arrangement and two of arranging in opposite directions increase stop block, and two increase stop block and are respectively and carve piece B1, carve piece B2;
Carve piece B1 and be positioned at the upper end of the inboard of connection supporting leg 21, carve the inboard of the inclined-plane of piece B1, carve the upper end of the inclined-plane low side of piece B1 near homonymy brace summer 1 towards this support corresponding to homonymy brace summer 1; Carve the cell wall of U-lag 12 blind ends that piece B2 is positioned at homonymy brace summer 1 corresponding to the corresponding end that connects supporting leg 21, carve the outside of the inclined-plane of piece B2 towards this support, the inclined-plane low side of carving piece B2 is near the corresponding termination that connects supporting leg 21.
Two overlap joint location that connect supporting legs 21 are provided with inside and outside carving piece C1, carving piece C2, so that two relative motions that connect between the supporting legs 21 obtain restriction of arranging and arrange in opposite directions.
Equal some first stiffeners 11 of horizontally set in the U-lag 12 of every side brace summer 1 prop up down to the openend of first stiffener 11 with this U-lag 12; U-lag 212 interior some second stiffeners 211 of horizontally set that each connects supporting leg 21 prop up down to the openend of second stiffener 211 with this U-lag 212.
Brace summer 1, connection supporting leg 21 adopt the U shaped steel.
Above-described only is an embodiment of the invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the principle of the invention, can also make some modification and improvement, these also should be regarded as belonging to protection scope of the present invention, can also be made as 3 etc. like: the quantity that connects supporting leg.

Claims (5)

1. increase impedance pressure type excavation support; Be the inversion U-shaped; It comprises each brace summer of both sides, through the connection leg of U-shaped clip securing member overlap joint between two brace summers upper ends; It is characterized in that: the overlap joint zone of connection leg and every side brace summer all is provided with a drag device, so that the relative motion between connection leg and the supported on both sides beam obtains restriction.
2. the impedance pressure type excavation support that increases according to claim 1 is characterized in that:
In setting opening one side that brace summer, connection leg be inverted U-shaped near this excavation support and being, outside setting opening one side that brace summer, connection leg be inverted U-shaped away from this excavation support and being;
The shape of cross section of brace summer, connection leg is a U-shaped, and the U-lag openend direction of brace summer, connection leg is pointed to the outside of this excavation support, and connection leg is placed in respectively in the U-lag of respective side brace summer with the two ends that the supported on both sides beam overlaps mutually;
Each drag device is that inside and outside arrangement and two of arranging in opposite directions increase stop block, and each increases stop block for carving piece;
Inboard that increases stop block and is positioned at the upper end of the inboard of connection leg corresponding to the homonymy brace summer, and this increases the inboard of the inclined-plane of stop block towards this excavation support, and this increases the upper end of the inclined-plane low side of stop block near the homonymy brace summer;
That of the outside increases the cell wall of U-lag blind end that stop block is positioned at the homonymy brace summer corresponding to the corresponding end of connection leg, and this increases the outside of the inclined-plane of stop block towards this excavation support, and this increases the corresponding termination of the inclined-plane low side of stop block near connection leg.
3. the impedance pressure type excavation support that increases according to claim 1 and 2 is characterized in that:
Connection leg is that the connection supporting leg of U-shaped forms through U-shaped clip securing member overlap joint by some shape of cross sections; The overlap joint location of adjacent connection supporting leg all is provided with inside and outside two of arranging and arranging in opposite directions and carves piece, so that the relative motion between the adjacent connection supporting leg obtains restriction.
4. the impedance pressure type excavation support that increases according to claim 2 is characterized in that:
Equal some first stiffeners of horizontally set in the U-lag of every side brace summer prop up down to the openend of first stiffener with this U-lag;
Some second stiffeners of horizontally set in the U-lag of connection leg prop up down to the openend of second stiffener with this U-lag.
5. the impedance pressure type excavation support that increases according to claim 3 is characterized in that:
Equal some first stiffeners of horizontally set in the U-lag of every side brace summer prop up down to the openend of first stiffener with this U-lag;
Connect interior some second stiffeners of horizontally set of U-lag of supporting leg, prop up down to the openend of second stiffener with this U-lag.
CN201110292699XA 2011-10-05 2011-10-05 Resistance-increasing pressure-resisting roadway support CN102373933A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201110292699XA CN102373933A (en) 2011-10-05 2011-10-05 Resistance-increasing pressure-resisting roadway support

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201110292699XA CN102373933A (en) 2011-10-05 2011-10-05 Resistance-increasing pressure-resisting roadway support

Publications (1)

Publication Number Publication Date
CN102373933A true CN102373933A (en) 2012-03-14

Family

ID=45793098

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201110292699XA CN102373933A (en) 2011-10-05 2011-10-05 Resistance-increasing pressure-resisting roadway support

Country Status (1)

Country Link
CN (1) CN102373933A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104675412A (en) * 2015-02-12 2015-06-03 湖南省煤炭地质勘查院 Closed integral bearing supporting structure for coal-mine coal-pillar bottom plate crushed surrounding rock roadway

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2084981U (en) * 1991-03-30 1991-09-18 河南省煤炭科学研究所 Pi-shaped trapezoidal supporter telescopic in two way
US6102628A (en) * 1998-03-30 2000-08-15 Council Of Scientific & Industrial Research Arch useful for withstanding effect of rockburst occurring in underground mines/tunnels
CN2707966Y (en) * 2004-07-02 2005-07-06 淮南矿业集团兴科计量技术服务有限责任公司 Resistance increasing high strength pressured anchor
CN101139931A (en) * 2007-10-17 2008-03-12 云南铁人机械制造有限公司 U-shaped mine tunnel supporting rack
CN201041045Y (en) * 2007-06-15 2008-03-26 黄小福 High-intensity durable mine prop stand
CN101245707A (en) * 2008-01-24 2008-08-20 河南理工大学 Yieldable rigidity commutation U shaped steel bracket overlap joint segment connecting method
CN201599043U (en) * 2010-02-04 2010-10-06 义马煤业集团股份有限公司常村煤矿 Composite metal support of mine large-section roadway shoring
CN202273691U (en) * 2011-10-05 2012-06-13 于守东 Resistance increasing pressure-resistant type roadway support

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2084981U (en) * 1991-03-30 1991-09-18 河南省煤炭科学研究所 Pi-shaped trapezoidal supporter telescopic in two way
US6102628A (en) * 1998-03-30 2000-08-15 Council Of Scientific & Industrial Research Arch useful for withstanding effect of rockburst occurring in underground mines/tunnels
CN2707966Y (en) * 2004-07-02 2005-07-06 淮南矿业集团兴科计量技术服务有限责任公司 Resistance increasing high strength pressured anchor
CN201041045Y (en) * 2007-06-15 2008-03-26 黄小福 High-intensity durable mine prop stand
CN101139931A (en) * 2007-10-17 2008-03-12 云南铁人机械制造有限公司 U-shaped mine tunnel supporting rack
CN101245707A (en) * 2008-01-24 2008-08-20 河南理工大学 Yieldable rigidity commutation U shaped steel bracket overlap joint segment connecting method
CN201599043U (en) * 2010-02-04 2010-10-06 义马煤业集团股份有限公司常村煤矿 Composite metal support of mine large-section roadway shoring
CN202273691U (en) * 2011-10-05 2012-06-13 于守东 Resistance increasing pressure-resistant type roadway support

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104675412A (en) * 2015-02-12 2015-06-03 湖南省煤炭地质勘查院 Closed integral bearing supporting structure for coal-mine coal-pillar bottom plate crushed surrounding rock roadway

Similar Documents

Publication Publication Date Title
CN103527219B (en) For the construction of the tunnel support structure on large deformation stratum
Jiao et al. Improvement of the U-shaped steel sets for supporting the roadways in loose thick coal seam
CN102996133B (en) Construction method applicable to intersection between inclined shaft and slant hole of weak surrounding rock tunnel
Kang et al. Investigation on support pattern of a coal mine roadway within soft rocks—a case study
CN103161480B (en) Initiatively support the method for roadside packing gob side entry retaining
CN104564090B (en) Repair all-in-one in multi-functional lane
CN102562099B (en) Method for carrying out rapid face excavation construction of loess tunnel by double rows of small conduits
CN106481343B (en) A kind of Soft Rock Tunnel Excavation and preliminary bracing method
Chang et al. Anchoring mechanism and application of hydraulic expansion bolts used in soft rock roadway floor heave control
CN108412542B (en) A kind of wide lane digging gangue paste body filling of high seam is at lane method
CN102278130B (en) Process method for reinforcing and grouting of high-pressure water-rich solution cavity of tunnel
CN203130108U (en) Primary support structure of reinforced tunnel
CN104863615A (en) Anti-seismic tunnel structure spanning large-scale active fault zone
CN102839984B (en) Oversized-section underground supporting structure
CN108843332B (en) Pass through fault belt large cross-section tunnel excavation and method for protecting support
CN2878511Y (en) Tensile compression combined self-anchored rock anchor rod
CN104533482B (en) A kind of reinforcement means improving gob side entry driving fender stability
CA3022748C (en) Method for recovering room-mining coal pillars by solid filling in synergy with artificial pillars
CN201747387U (en) Roadway supporting bracket
CN103114856B (en) Construction method for in-situ broadening and remolding of existing double-arched tunnel
CN105134269B (en) Control method for roadway surrounding rock achieving cooperative load bearing by enabling anchor cables to penetrate through sheds
CN108915720B (en) A kind of large cross-section tunnel passes through fault belt construction method
CN203080518U (en) Self-drilling type recoverable anchor wire
Li Rock support design based on the concept of pressure arch
CN104389317B (en) The only pile foundation construction of large-span arch bridge ultra-large type tilting

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20120314