CN202628123U - Large-section fault fracture zone tunnel mud burst processing structure - Google Patents
Large-section fault fracture zone tunnel mud burst processing structure Download PDFInfo
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- CN202628123U CN202628123U CN201220223271XU CN201220223271U CN202628123U CN 202628123 U CN202628123 U CN 202628123U CN 201220223271X U CN201220223271X U CN 201220223271XU CN 201220223271 U CN201220223271 U CN 201220223271U CN 202628123 U CN202628123 U CN 202628123U
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Abstract
The utility model relates to the field of tunnel construction, in particular to a large-section fault fracture zone tunnel mud burst processing structure, and solves the problems of large construction space, high construction cost, long period and the like in the conventional fault fracture zone tunnel mud burst processing. The structure comprises a steel arch frame, foot locking anchor tubes, inside small conduits, outside small conduits and water leading and draining tubes, wherein the inside small conduits and the outside small conduits are distributed along the inner contour line and the outer contour line of the steel arch frame; the water leading and draining tubes are distributed at a collapse opening; the angle of the inside small conduits is 10 to 15 degrees; the angle of the outside small conduits is 15 to 25 degrees; a drainage blind tube, a concrete back-injection tube and a mortar pumping tube are pre-embedded at the back of the steel arch frame; the foot locking anchor tubes of the arch frame are reinforced by adopting a novel structure; the structure is simple, reasonable in design, convenient to machine and operate, low in labor intensity, safe, reliable, easy to master, low in cost, suitable for the large-section fault fracture zone mud burst processing of railway tunnels, and easy to popularize and use, has an effect of controlling mud burst and water inrush disasters effectively, and also can be used for the fault fracture zone mud burst processing of highways and hydraulic tunnels.
Description
Technical field
The utility model relates to the constructing tunnel field, is specially the prominent mud Processing Structure in a kind of big section fault belt tunnel.
Background technology
Along with the needs of China's national defense, special line for passenger trains, speedway, communications and transportation and utility development and environmental protection, farmland protection, city diversion, the constructing tunnel of growing up increases year by year.In the construction inevitably fault belt handle also more and morely, prominent mud takes place in the fault belt of growing at crevice water, how can pass through the prominent mud section construction of fault belt safely and fast, is constructing tunnel and needs one of difficult problem of solution.Mostly the fault belt country rock in most of tunnels is ancient strata of metamorphic rocks, and lithology is complicated and changeable, and tomography, aspect and tectonic joint are grown; Many meeting interfacial frictions and vein intert, filling dust and fault gouge in the fault zone, crushing rock formation; Basically do not have gluing, underground water is main with crevice water in the tunnel district, and ground water reserve condition is better; The tunnel water yield is bigger, the tool pressure-bearing property.Adopt the bassoon booth structure to construct mostly to the prominent mud in big section fault belt tunnel at present, required construction space is bigger, and device therefor is huge; Lease expenses is higher; And the mechanical blowdown of use is many, noise is big, and the operating personnel is endangered greatly, the more important thing is that construction period is longer in the hole; Be unfavorable for the fast processing of prominent mud, have potential safety hazard.
In addition, traditional lock pin anchor tube mode of setting is: be close to lock pin anchor tube to squeeze into about bow member behind the upright bow member and get final product, left and right sides anchor tube welds with reinforcing bar; The defective of this reinforcing mode is: when pressure from surrounding rock was big, lock pin anchor tube and bow member had not ruptured when also reaching the bearing capacity limit, did not form whole between anchor tube and steel bow member; Lose its effect prematurely; Only resist surrouding rock deformation through the displacement of restriction steel bow member, resistance to overturning is relatively poor, has reduced working security.
Summary of the invention
The utility model is handled and is adopted daguanpeng construction in order to solve the prominent mud in existing fault belt tunnel, has problems such as required construction space is big, construction cost is high, the cycle is long, and a kind of big section fault belt tunnel mud Processing Structure of dashing forward is provided.
The utility model is to adopt following technical scheme to realize: the prominent mud Processing Structure in big section fault belt tunnel; Comprise steel bow member that installs along face and the lock pin anchor tube that is positioned at steel bow member both sides; Also comprise along the inside and outside outline line of steel bow member inboard ductule and the outside ductule laid of solid matter and the ejectment water pipe that is laid in the mouth place, cave of collapsing respectively; Inboard ductule angle is 10～15 degree; Outside ductule angle is 15～25 degree, and the steel bow member is embedded with the draining blind pipe behind at interval, concrete returns jet pipe and pumping mortar pipe.
The position of boxing out on the described steel bow member web is provided with leading ductule.
On the described steel bow member and by pasting country rock one side fixed interval fixing steel plate is arranged; Each fixing steel plate two ends has the locating hole that is positioned at steel bow member both sides; The lock pin anchor tube of squeezing into country rock is in locating hole, and the lock pin anchor tube bared end that is positioned at steel bow member both sides adopts circular connector to connect and fixes with the steel bow member.The quantity of said fixing steel plate and spacing distance can be confirmed according to the job site demand.
The angle of described lock pin anchor tube and horizontal direction is 15～20 °, and the locating hole on the fixing steel plate is vertical slotted eye, because lock pin anchor tube is in the oblique country rock of squeezing into steel bow member both sides, so locating hole is vertical slotted eye; Said circular connector be by two fixedly reinforcing bar flexibly connect the loop configuration form, can adjust spacing, with the convenient construction operation.
Adopt the structure design of the utility model, have the following advantages:
1, when mud ground matter appears dashing forward in the driving excavation, directly directly push the inboard ductule and the outside ductule that process in the cave that collapses with air pressure gun along the inside and outside outline line of face steel bow member earlier, solid matter performs as far as possible; All the other local places of on the bow member web, boxing out with the air pressure gun perforating perform leading ductule; Method is simple, and is easy to operate, and is convenient to draining; Faster than bassoon canopy scheme construction speed, effect is obvious;
2, fault gouge band slip casting diffusion difficulty, the pre-grouting effect is little, even the prominent mud phenomenon of slip casting water aggravation occurs; At the pre-buried ejectment waterpipe of doing of collapse cave mouth place steel pipe or ductule; Fault gouge is discharged in right amount, can alleviate the pressure of preliminary bracing, and have easy-operating characteristics;
3, near the local cover in time of the preliminary bracing arch of having constructed the mud ground section of will dashing forward, when to avoid prominent mud, moment strength wash away construction site preliminary bracing, construction is simply, quality is guaranteed, cost is lower, recruitment is few;
4, at steel bow member pre-buried draining blind pipe behind, pre-buried concrete returns jet pipe in suitable place, makes preliminary bracing form firm duricrust, the timely backfill of the pre-buried pumping mortar pipe cave that collapses;
5, adopt steel bow member and lock pin anchor tube to reinforce new method, make the steel bow member fixing more firm, form whole with lock pin anchor tube through locating hole, fixing steel plate and circular connector; Ultimate bearing capacity further improves, and makes the lock pin anchor tube after squeezing into give full play to supporting role, to peripheral rock bigger supporting drag is provided; Stop country rock to produce excessive deformation; Limit the displacement of steel bow member better, make it bear the pressure that surrouding rock deformation causes as early as possible, guarantee the stability at tunnel initial stage;
In a word, the utility model is simple in structure, reasonable in design, processing is easy, constructing operation is easy, labour intensity is low, safe and reliable, be prone to grasp, economic benefit is obvious, solved tunnel safety driving prevention geological disaster problem to greatest extent; Practiced thrift cost, used mechanical blowdown to lack in the daguanpeng construction hole than adopting, noise is little; Can reduce mechanical exhaust emissions, the operating personnel endangered little, create good environmental benefit to constructing tunnel; Be suitable for the prominent mud processing of the big section fault belt of railway tunnel, the effectively prominent mud water bursting disaster effect of control also can be used for highway, the prominent mud processing of water conservancy project tunnel fault belt; Have very big superiority, be prone to promote the use of.
Description of drawings
Fig. 1 is the structural representation of the utility model,
Fig. 2 is said steel bow member of the utility model and the Facad structure sketch map of locking the pin anchor tube;
Fig. 3 is said steel bow member of the utility model and the side structure sketch map of locking the pin anchor tube;
Fig. 4 is the structural representation of the said circular connector of the utility model;
Among the figure: 1-steel bow member; 2-lock pin anchor tube; The 3-fixing steel plate; The 4-locating hole; The 5-circular connector;
The inboard ductule of 6-; 7-outside ductule; 8-ejectment water pipe; 9-draining blind pipe; The 10-concrete returns jet pipe; 11-pumping mortar pipe; The leading ductule of 12-.
The specific embodiment
The prominent mud Processing Structure in big section fault belt tunnel; As shown in Figure 1; Comprise steel bow member 1 that installs along face and the lock pin anchor tube 2 that is positioned at steel bow member both sides; Also comprise along the inside and outside outline line of steel the bow member inboard ductule 6 laid of solid matter and outside ductule 7 and the ejectment water pipe 8 that is laid in the mouth place, cave of collapsing respectively, inboard ductule angle is 10～15 degree, and outside ductule angle is 15～25 degree; The steel bow member is embedded with draining blind pipe 9 behind at interval, concrete returns jet pipe 10 and pumping mortar pipe 11, and the position of boxing out on the steel bow member web is provided with leading ductule 12.
Like Fig. 2, shown in 3, on the steel bow member 1 and by pasting country rock one side fixed interval fixing steel plate 3 is arranged, each fixing steel plate two ends has the locating hole 4 that is positioned at steel bow member both sides; The lock pin anchor tube 2 of squeezing into country rock is in locating hole 4; The lock pin anchor tube bared end that is positioned at steel bow member both sides adopts circular connector 5 to connect and fixes with steel bow member 1, and is as shown in Figure 4, circular connector 5 be by two fixedly reinforcing bar connect into ring-like forming; Be the convenient construction operation, can adjust spacing.Lock pin anchor tube 2 is squeezed into end and is the shape of a hoof, and lock pin anchor tube 2 is 15～20 ° with the angle of horizontal direction, and the locating hole 4 on the fixing steel plate 3 is vertical slotted eye.
When prominent mud ground matter appears in driving excavation, earlier along the face bow member inboard directly with air pressure gun the L=4～6m that processes, the sharp Φ 50mm of termination bag; Wall thickness is that 5 millimeters seamless steel pipe directly pushes in the cave that collapses as inboard ductule, and solid matter performs as far as possible, and angle is about 10～15 degree; Simultaneously perform the seamless ductule of one deck Φ 50mm again along the bow member outline; Angle is 15～25 degree, and as outside ductule, all the other local places of on the bow member web, boxing out with the air pressure gun perforating perform the leading ductule of Φ 50mm; Vertically set short and small conduit at prominent mud mouth, insert shortage behind at ductule.Do interim ejectment waterpipe at the mouth place, cave that collapses with Φ 80mm steel pipe or Φ 50mm ductule are pre-buried, fault gouge is discharged in right amount, to alleviate the pressure of preliminary bracing.Near the local cover in time of the preliminary bracing of having constructed the mud ground section of will dashing forward arch, when to avoid prominent mud, moment strength wash away construction site preliminary bracing; The strict overall size of controlling bow member well in this external construction, bow member will have enough deformation allowances, guarantees that the thickness of cover arch back lining cutting concrete meets design requirement; The pre-buried Φ 100mm draining blind pipe in the bow member behind; Pre-buried Φ 80mm steel pipe returns jet pipe as concrete in suitable place, makes preliminary bracing form firm duricrust, the pre-buried Φ 150mm steel pipe pumping mortar backfill cave that collapses; In time perform the cover arch; Guarantee the closely connected formation good whole of twice supporting force structure, lead down during special construction is collapsed near the cave and want prudent, in lead down to interlock and excavate and at every turn can only a Pin bow member drilling depth.
After 1 of steel bow member stands fixing steel plate is welded in the steel bow member by pasting the country rock end; Lock pin anchor tube length is not less than 3.5～4m; Process with Φ 42mm ductule, the end of hitting the person becomes the shape of a hoof with cutting machine, and lock pin anchor tube is squeezed into the YT-28 air pressure gun when reinforcing the connection; It is full with annular element connection built-up welding that lock pin anchor tube exposes the termination, connects annular element and formed by Φ 22mm bar bending.Fixing steel plate by up and down two form spacing 15cm, every block length 45cm, wide 25cm, thick 16mm; Lock pin anchor tube length is 3.5～4m, sets the certain angle of Shi Yaoyou with air pressure gun, generally is controlled at 15～20 °, sets 4 altogether; The aperture of locating hole is 50mm, is slit into ellipse (or drilling machine punching) with oxygen, the long 13cm scope that is controlled at, steel bow member lower end link with in lead or lead the bow member junction plate down, reservation connecting bolt hole.
Claims (5)
1. the prominent mud Processing Structure in one kind big section fault belt tunnel; Comprise steel bow member (1) that installs along face and the lock pin anchor tube (2) that is positioned at steel bow member both sides; It is characterized in that also comprising along the inboard ductule (6) and the outside ductule (7) of the inside and outside outline line difference of steel bow member solid matter laying and the ejectment water pipe (8) that is laid in the mouth place, cave of collapsing; Inboard ductule angle is 10～15 degree; Outside ductule angle is 15～25 degree, and the steel bow member is embedded with draining blind pipe (9) behind at interval, concrete returns jet pipe (10) and pumping mortar pipe (11).
2. the big section fault belt according to claim 1 tunnel mud Processing Structure of dashing forward is characterized in that the position of boxing out on the described steel bow member web is provided with leading ductule (12).
3. the big section fault belt according to claim 1 tunnel mud Processing Structure of dashing forward; It is characterized in that steel bow member (1) is gone up and fixing steel plate (3) is arranged by pasting country rock one side fixed interval; Each fixing steel plate two ends has the locating hole (4) that is positioned at steel bow member both sides; The lock pin anchor tube (2) of squeezing into country rock is in locating hole (4), and the lock pin anchor tube bared end that is positioned at steel bow member both sides adopts circular connector (5) to connect and fixes with steel bow member (1).
4. the big section fault belt according to claim 3 tunnel mud Processing Structure of dashing forward, the angle that it is characterized in that locking pin anchor tube (2) and horizontal direction is 15～20 °, the locating hole (4) on the fixing steel plate (3) is vertical slotted eye.
5. the big section fault belt according to claim 3 tunnel mud Processing Structure of dashing forward, it is characterized in that circular connector (5) be by two fixedly reinforcing bar flexibly connect the loop configuration that forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220223271XU CN202628123U (en) | 2012-05-18 | 2012-05-18 | Large-section fault fracture zone tunnel mud burst processing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220223271XU CN202628123U (en) | 2012-05-18 | 2012-05-18 | Large-section fault fracture zone tunnel mud burst processing structure |
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| CN202628123U true CN202628123U (en) | 2012-12-26 |
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| CN201220223271XU Expired - Fee Related CN202628123U (en) | 2012-05-18 | 2012-05-18 | Large-section fault fracture zone tunnel mud burst processing structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351674A (en) * | 2016-11-04 | 2017-01-25 | 长安大学 | Composite lock pin member of tunnel steel frame and stress analysis method of composite lock pin member |
| CN108316948A (en) * | 2018-02-01 | 2018-07-24 | 山东交通学院 | A kind of rich water soft stratum gushing water is dashed forward the Grouting method after mud |
| CN108590704A (en) * | 2018-04-27 | 2018-09-28 | 中铁十二局集团有限公司 | Light section per-fore pouring liquid with small pipe pays maintaining method in advance |
| CN108915720A (en) * | 2018-07-15 | 2018-11-30 | 中铁二十局集团有限公司 | A kind of large cross-section tunnel passes through fault belt construction method |
| CN110219678A (en) * | 2019-07-11 | 2019-09-10 | 中交第二公路工程局有限公司 | Pass through the Large Diameter Pipeline steel tube lock leg structure and construction technology in Debris Flow Deposition body tunnel |
| CN112814715A (en) * | 2021-01-07 | 2021-05-18 | 中铁十六局集团第三工程有限公司 | Novel locking anchor pipe construction fixing device and construction method thereof |
-
2012
- 2012-05-18 CN CN201220223271XU patent/CN202628123U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351674A (en) * | 2016-11-04 | 2017-01-25 | 长安大学 | Composite lock pin member of tunnel steel frame and stress analysis method of composite lock pin member |
| CN106351674B (en) * | 2016-11-04 | 2019-03-22 | 长安大学 | A kind of the composite lock foot component and its force analysis method of tunnel steelframe |
| CN108316948A (en) * | 2018-02-01 | 2018-07-24 | 山东交通学院 | A kind of rich water soft stratum gushing water is dashed forward the Grouting method after mud |
| CN108590704A (en) * | 2018-04-27 | 2018-09-28 | 中铁十二局集团有限公司 | Light section per-fore pouring liquid with small pipe pays maintaining method in advance |
| CN108915720A (en) * | 2018-07-15 | 2018-11-30 | 中铁二十局集团有限公司 | A kind of large cross-section tunnel passes through fault belt construction method |
| CN108915720B (en) * | 2018-07-15 | 2019-11-12 | 中铁二十局集团有限公司 | A kind of large cross-section tunnel passes through fault belt construction method |
| CN110219678A (en) * | 2019-07-11 | 2019-09-10 | 中交第二公路工程局有限公司 | Pass through the Large Diameter Pipeline steel tube lock leg structure and construction technology in Debris Flow Deposition body tunnel |
| CN112814715A (en) * | 2021-01-07 | 2021-05-18 | 中铁十六局集团第三工程有限公司 | Novel locking anchor pipe construction fixing device and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20200518 |