CN104405398A - Ingate anti-impact damping supporting structure - Google Patents
Ingate anti-impact damping supporting structure Download PDFInfo
- Publication number
- CN104405398A CN104405398A CN201410562902.4A CN201410562902A CN104405398A CN 104405398 A CN104405398 A CN 104405398A CN 201410562902 A CN201410562902 A CN 201410562902A CN 104405398 A CN104405398 A CN 104405398A
- Authority
- CN
- China
- Prior art keywords
- ingate
- composite foam
- layer
- foam metal
- protection structure
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/11—Lining shafts; Linings therefor with combinations of different materials, e.g. wood, metal, concrete
-
- 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
-
- 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
-
- 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
- E21D20/025—Grouting with organic components, e.g. resin
Abstract
The invention discloses an ingate anti-impact damping supporting structure and belongs to the technical field of mining and shaft building. The supporting structure sequentially comprises a high-toughness reinforced concrete pouring layer, a composite foam metal pad layer (a main energy adsorbing and damping layer) and an anchor rope grouting reinforcement layer; the high-toughness reinforced concrete pouring layer, the composite foam metal pad layer and the anchor rope grouting reinforcement layer are combined to form the strong-weak-strong supporting structure; the composite foam metal pad layer is tightened on a concrete lining outside the anchor rope grouting reinforcement layer to form a main energy adsorbing and damping metal pad layer. According to the ingate anti-impact damping supporting structure, a rigid structure and a flexible structure are coupled together, so that a synergetic deformation effect of the supporting structure is played, the damage effect of impact shockwaves is effectively absorbed and weakened, and the problem of disasters of damage and cracking of surrounding rocks, unstability of the supporting structure and the like which are caused by large deformation of a highly centralized static stress and a dynamic impact load of an ingate is solved.
Description
Technical field
The invention belongs to mining well construction technology field, be specifically related to a kind of ingate anti-impact shock-absorbing supporting and protection structure, be applicable to the ingate supporting under complex geological condition at great depth and working design.
Background technology
Along with to the increase of coal demand and continuing to increase of mining depth, superficial part resource is day by day exhausted, and China mine enters deep mining in succession, and geomechanics environment is more complicated.Along with the increase of exploitation, engineering project disaster increases increasingly, as Rock Burst, ore deposit pressure manifest violent, roadway surrounding rock large deformation, stream becomes, temperature rise etc., grave danger is caused to the safety and high efficiency of deep resource.Ingate is the part that pit shaft is connected with tunnel, shaft station, and be in the throat status of mine, its position is very special, design section is larger, the length of service is also longer, and in ingate place roadway construction process, the roof fall caused because wall rock destabilization destroys, cave in accident happen occasionally.Spatial relationship between ingate and the borehole wall is comparatively complicated, and mutual distance is near, and very easily form stress in junction and concentrate, cause wall-rock crack to grow, Exploring Loose Rock Country in Tunnels strengthens further, brings severe challenge to the construction at ingate place and design of its support.
After entering deep, geological structure becomes complicated, selfweight stress increases, rock mass has gathered large energy, under the particular surroundings of " three high disturbances ", the excavate and unload of subterranean body causes stress repeatedly to redistribute, rock mass damage has the mutability of dynamic response, when the ingate borehole wall, Chamber Construction, concussion of blasting influences each other, the loose range that ingate place soft rock mass expands because blowing out vibrations is likely communicated with, form a soft stratum relaxation zone in a big way, become a region of release lithostatic stress.Under repeatedly concussion of blasting, cause in the long period of tunnel and can not stablize, the concentrated stress superposition that excavation ingate produces, stress worsens, and surrouding rock deformation aggravates, and brings out dynamic disaster, there is the nonlinear dynamic phenomenon such as bump in engineering rock mass, causes supporting structure system unstable failure.In the past under deep high-ground stress, complicated geological mechanical environment, the supporting and protection structure that ingate opposing dynamic disaster impacts rarely had report.
In prior art in the ruggedized construction at ingate place, often rely on the intensity improving supporting and protection structure, occur supporting and protection structure and surrouding rock deformation inharmonious, the impact endurance test shock that dynamic loads is brought out in excavation, explosion, roof strata fracture etc. can not be resisted, and the toughness of concrete of building is inadequate and impact strength is poor, occur that steel concrete large area is peeled off, reinforcing bar distortion such as to expose at the phenomenon, can not to have met under the high-ground stress environment of deep the disasters such as roadway surrounding rock large deformation, dynamic impact.
Summary of the invention
For this reason, the present invention proposes a kind of ingate anti-impact shock-absorbing supporting and protection structure, it comprises " strong and weak strong " supporting and protection structure be made up of anchor rope grouting back-up coat, composite foam metal bed course and high-ductility steel reinforced concrete perfusion layer, the present invention increases its toughness by increasing steel fibre in ordinary concrete, supporting and protection structure of the present invention serves the effect of energy-absorbing, damping, erosion control, solves the static stress large deformation of ingate high concentration and the destruction of dynamic impulsion load and causes rock convergence measure to break and the disaster such as supporting and protection structure unstability.
Its technical solution comprises:
A kind of ingate anti-impact shock-absorbing supporting and protection structure, it comprises the perfusion of high-ductility steel reinforced concrete layer, composite foam metal bed course, anchor rope grouting back-up coat, it is characterized in that: described composite foam metal bed course is fastened on the concrete spray coating outside described anchor rope grouting back-up coat and forms main energy-absorbing damping metal pedestal layer, the described perfusion of high-ductility steel reinforced concrete layer, composite foam metal bed course and anchor rope grouting back-up coat collectively form the supporting and protection structure of " strong-weak-strong ".
The lateral branch of above-mentioned composite foam metal bed course is provided with double steel bar, forms certain space after setting up sectionalized steel form outside above-mentioned double steel bar, pours into high tenacity concrete in above-mentioned space.
Above-mentioned composite foam metal bed course be by hollow microneedle Beads with metallic matrix through mixing, shaping, solidify and a kind of foamed material obtained, its thickness is 50 ~ 70mm, and aperture is 150 ~ 160 μm, and porosity can reach 98%.
Its horizontal bar of above-mentioned double steel bar Ф 25, ring muscle Ф 25, an array pitch is 250mm × 250mm, and connect with the structure muscle of Ф 8 between inside and outside layer ring muscle, between dowel, array pitch is 500mm, is all arranged as blossom type.
Above-mentioned anchor rope grouting back-up coat also comprises high pre-stress hollow grouting cable anchor, between above-mentioned anchor cable, array pitch is (800-1000mm) × (1400-2000) mm, grouting serous fluid comprises Portland cement and slip casting additive, water/binder ratio in above-mentioned portland cement is 0.6 ~ 1:1, and the percentage by weight of above-mentioned slip casting additive is 7 ~ 8%.
Above-mentioned high tenacity concrete be by increasing long 20-40mm in ordinary concrete, the steel fibre of thick 0.5mm increases concrete toughness, wherein, the volume of steel fibre is 50-100kg/m
3, high tenacity concrete is relative to ordinary concrete at the same level, and its tensile strength improves 54-100%, and first crack strength improves 160-500%, and impact fatigue intensity improves 8-15 doubly.
The invention discloses a kind of ingate anti-impact shock-absorbing supporting and protection structure, it pours into layer by the high-ductility steel reinforced concrete be arranged in order, composite foam metal bed course and the combination of anchor rope grouting back-up coat, define the supporting and protection structure of " strong-weak-strong ", high-ductility steel reinforced concrete perfusion layer, anchor rope grouting layer is as rigid structures, composite foam metal bed course is as flexible structure, rigid structures and flexible structure are coupled by the present invention, play the cooperative transformation effect of supporting and protection structure, effectively absorb and weaken the destruction of shock wave, can support heavily stressed under static load, excavation can be resisted again, explosion, the stress wave dynamic loads that roof strata fracture etc. is brought out, overall structure serves the effect of energy-absorbing damping erosion control, solve the static stress large deformation of ingate high concentration and the destruction of dynamic impulsion load and cause rock convergence measure to break and the disaster such as supporting and protection structure unstability.
The present invention reinforces the loose country rock of ingate by adopting high pre-stress hollow grouting cable anchor, enhances the mechanical property of country rock body, gives full play to the supporting capacity of country rock self, form outer ruggedized construction on a large scale.
The main energy-absorbing damping metal pedestal layer of the present invention realizes by adopting the composite foam metal material of flexible structure, composite foam metal mat of material can absorb high-octane Shock stress Wave, a large amount of merits is consumed in compressive strain process, changed into the distortion of abscess in structure, caved in, broken, energy that the various forms such as cell wall friction dissipates, thus improve the shock proof ability of energy-absorbing damping of whole supporting and protection structure;
The high-ductility steel reinforced concrete that the present invention selects instead of the larger conventional concrete of rigidity in the past, improve toughness and the impact resistance of perfusion layer, have the effect of good energy-absorbing cracking resistance, solve ingate steel concrete large area in the past and peel off, reinforcing bar distortion such as to expose at the breakoff phenomenon.
Ingate anti-impact shock-absorbing supporting and protection structure of the present invention, greatly reduces construction cost and a large amount of ingate reclamation works, ensure that the long-term stability of ingate supporting and protection structure.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, explanation clear, complete is further done to the present invention:
Fig. 1 is the schematic diagram of ingate anti-impact shock-absorbing supporting and protection structure of the present invention;
Fig. 2 is the sectional drawing along I-I line in Fig. 1;
Fig. 3 is the sectional drawing along II-II line in Fig. 1;
Fig. 4 is the structural representation of composite foam metal bed course of the present invention;
In figure: 1, composite foam metal bed course, 2, high-ductility steel reinforced concrete, 3, high pre-stress hollow grouting cable anchor, 4, double steel bar, 5, ingate, 6, pit shaft, 7, wire lath and concrete spray coating, 8, anchor rope grouting back-up coat
Detailed description of the invention
The invention discloses a kind of ingate anti-impact shock-absorbing supporting and protection structure, in order to make advantage of the present invention, technical scheme clearly, clearly, below in conjunction with specific embodiment, explanation clear, complete further being done to the present invention.
The present invention, a kind of ingate anti-impact shock-absorbing supporting and protection structure, as shown in Figure 1, comprise the perfusion of high-ductility steel reinforced concrete layer, composite foam metal bed course 1 and anchor rope grouting back-up coat 8, wherein, high-ductility steel reinforced concrete perfusion layer and anchor rope grouting back-up coat are as rigid structures, composite foam metal bed course is as flexible structure, three is combined in ingate 5 supporting and protection structure that pit shaft 6 defines " strong-weak-strong " below, the cooperative transformation effect of supporting and protection structure can be played, effectively absorb and weaken the destruction of shock wave.
Anchor rope grouting back-up coat of the present invention is formed by high pre-stress hollow grouting cable anchor 3 grouting reinforcement rock, high pre-stress hollow grouting cable anchor 3 is as a part wherein, high pre-stress hollow grouting cable anchor 3 adopts hollow structure, hollow tube is double does Grouting Pipe, anchor cable adopts high strength helical rib compressor wire to compile strand and forms, adopt the anchorage style of " noting after first anchor ", achieve resin anchoring, anchor cable pretension and hollow tube slip casting integration, improve to reach and improve coffer mechanics performance, the effect of deformation controlling for rock surrounding gateways, the larger overall structure of an intensity is formed in rock stratum, have simultaneously and reduce water to the emollescence of Surrounding Rock Strength,
In the present invention, between high pre-stress hollow grouting cable anchor, array pitch elects (800-1000) × (1400-2000) mm as, grouting serous fluid adopts 525# Portland cement, water/binder ratio is 0.6 ~ 1, add the ACZ-I slip casting additive of 7 ~ 8% in addition, ACZ-1 additive has diminishing, microdilatancy, the effects such as enhancing, overcome current grouting serous fluid water/binder ratio high, intensity is low, curing shrinkage, the problems such as pumping resistance is large, that can improve cement grout pours into ability, expand slurries filling radius, improve weak, the impervious effect of loose rock mass grouting and reinforcing, grouting pressure is 2 ~ 6MPa.
In the present invention, there are wire lath and concrete spray coating 7 in above-mentioned anchor rope grouting back-up coat surface, and wire lath adopts Ф 6mm steel mesh reinforcement, mesh 90 × 90mm, and between net, overlap joint is apart from being not less than 100mm, and lap-joint uses 10# iron wire to connect; Concrete spray coating mainly sprays C20 or C25 grade concrete mortar, material mix proportion: cement: yellow sand: stone=1:2:2, mud content is calculated by weight and is not more than 3%, add that accelerating admixture is cement weight 3 ~ 4%, spray the thick concrete of 40 ~ 50mm, sprayed mortar one is that prevent country rock weathering and water to the attenuation of country rock, two is for shutoff shoulder bed effects is played in slip casting for the joint on the closed borehole wall and surface, tunnel, crack;
Composite foam metal bed course of the present invention, shown in composition graphs 4, composite foam metal bed course 1 is due to the porous dissipative structure of its uniqueness, a kind of novel superior energy-absorbing and surge guard material, this material can be that cenosphere filling alloy matrix aluminum forms, under dynamic impulsion, have the performance of very high apparatus with shock absorbing, composite foam metal bed course 1 is bought by commercial channel and is obtained;
High-ductility steel reinforced concrete of the present invention comprises double steel bar and steel fibrous concrete.As shown in Figure 2 and Figure 3, its specification of double steel bar is horizontal bar Ф 25, ring muscle Ф 25, and an array pitch is 250mm × 250mm, and connect with the structure muscle of Ф 8 between inside and outside layer ring muscle, between dowel, array pitch is 500mm, and equal blossom type is arranged;
High-ductility steel reinforced concrete of the present invention 2 improves the performances such as the total quality of reinforced concrete structure and shock resistance by increasing steel fibre in concrete, has the effect of good energy-absorbing cracking resistance.
The construction method of ingate supporting and protection structure of the present invention, key step is:
Step 1: beaten and clean anchor cable boring after, first on the ingate 5 place country rock of excavation shaping, hang up wire lath, high pre-stress hollow grouting cable anchor is installed, cable body is helical ribbed steel strand, diameter is Φ 20 ~ 22mm, length is 7 ~ 9m, resin anchoring agent is adopted to carry out end anchor, the anchorage length of anchor cable must not be less than 1000mm, during end anchorage, anchor cable pretightning force is not less than 200kN, at distance anchor cable afterbody 1.0m position winding package cloth or cotton yarn, then agitating resin Anchor Agent, load onto cone rubber stop grouting plug (conehead inwards) and pallet afterwards, rotating tail nut carries out sealing of hole and stretch-draw pretension again, anchor cable pallet adopts Φ 200 × 16mm round tray, coordinate high strength spherical ball pad, mechanical property and anchor cable intensity supporting,
Step 2: spray C20 or C25 grade concrete mortar to ingate place wall in time after installing anchor cable, material mix proportion: cement: yellow sand: stone=1:2:2, mud content is calculated by weight and is not more than 3%, add that accelerating admixture is cement weight 3 ~ 4%, spray the thick concrete of 40 ~ 50mm in the ingate tunnel of new excavation, for joint, the crack on the closed borehole wall and surface, tunnel, prevent country rock weathering and water to the attenuation of country rock; Must clean rock side before above-mentioned injection, the floating cash of cleaning, sprays and wants evenly, without crack;
Step 3: have after some strength until concrete, carries out high-pressure slip-casting to grouting cable anchor, for reinforcing roadway surrounding rock, effectively limits wall rock loosening distortion, strengthening coffer mechanics performance on a large scale; When carrying out high-pressure slip-casting, first unloading the plug of anchor cable afterbody, slurry casting machine being connected on the internal thread of anchor cable afterbody, slowly tighten slurry casting machine, by grouting pipeline, slurry casting machine is connected with grouting pump, and check the Grouting Pipe that is connected with grouting pump and casting head whether unimpeded, in slip casting process, disposable filling is answered in each boring, if stalled midway, may Grouting Pipe be blocked, after slip casting fills first, can grouting pump be closed, wait for 2 ~ 3min slip casting again, until again fill;
Step 4: after slip casting terminates, with long iron nail, composite foam metal bed course is fastened on concrete spray coating, array pitch 2000 × 2000mm between long iron nail, then outside composite foam metal bed course, double steel bar 4 is installed, then outside double steel bar 4, sectionalized steel form is set up, template size can be selected according to Specific construction, by the space of high tenacity filling concrete between composite foam metal bed course and sectionalized steel form, forms high-ductility steel reinforced concrete perfusion layer.
Ingate supporting and protection structure of the present invention can resist the stress wave dynamic loads that excavation, explosion, roof strata fracture etc. are brought out, overall structure serves the effect of energy-absorbing damping erosion control, solves the static stress large deformation of ingate high concentration and the destruction of dynamic impulsion load and causes rock convergence measure to break and the disaster such as supporting and protection structure unstability.
Claims (6)
1. an ingate anti-impact shock-absorbing supporting and protection structure, it comprises the perfusion of high-ductility steel reinforced concrete layer, composite foam metal bed course, anchor rope grouting back-up coat, it is characterized in that: described composite foam metal bed course is fastened on the concrete spray coating outside described anchor rope grouting back-up coat and forms main energy-absorbing damping metal pedestal layer, the described perfusion of high-ductility steel reinforced concrete layer, composite foam metal bed course and anchor rope grouting back-up coat collectively form the supporting and protection structure of " strong-weak-strong ".
2. ingate anti-impact shock-absorbing supporting and protection structure according to claim 1, it is characterized in that: the lateral branch of described composite foam metal bed course is provided with double steel bar, sectionalized steel form is set up outside described double steel bar, between composite foam metal bed course and sectionalized steel form, form certain space, in described space, pour into high tenacity concrete.
3. ingate anti-impact shock-absorbing supporting and protection structure according to claim 1, it is characterized in that: described composite foam metal bed course be by hollow microneedle Beads with metallic matrix through mixing, shaping, solidify and a kind of foamed material obtained, its thickness is 50 ~ 70mm, aperture is 150 ~ 160 μm, and porosity can reach 98%.
4. ingate anti-impact shock-absorbing supporting and protection structure according to claim 1, it is characterized in that: described double steel bar horizontal bar Ф 25, ring muscle Ф 25, between array pitch be 250mm × 250mm, connect with the structure muscle of Ф 8 between inside and outside layer ring muscle, between dowel, array pitch is 500mm, is all arranged as blossom type.
5. ingate anti-impact shock-absorbing supporting and protection structure according to claim 1, it is characterized in that: described anchor rope grouting back-up coat also comprises high pre-stress hollow grouting cable anchor, grouting serous fluid comprises Portland cement and slip casting additive, water/binder ratio in described portland cement is 0.6 ~ 1:1, and the percentage by weight of described slip casting additive is 7 ~ 8%.
6. ingate anti-impact shock-absorbing supporting and protection structure according to claim 2, is characterized in that: described high tenacity concrete be by increasing long 20-40mm in ordinary concrete, the steel fibre of thick 0.5mm increases concrete toughness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410562902.4A CN104405398B (en) | 2014-10-21 | 2014-10-21 | Ingate anti-impact shock-absorbing supporting construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410562902.4A CN104405398B (en) | 2014-10-21 | 2014-10-21 | Ingate anti-impact shock-absorbing supporting construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104405398A true CN104405398A (en) | 2015-03-11 |
| CN104405398B CN104405398B (en) | 2016-11-30 |
Family
ID=52643054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410562902.4A Expired - Fee Related CN104405398B (en) | 2014-10-21 | 2014-10-21 | Ingate anti-impact shock-absorbing supporting construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104405398B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547648A (en) * | 2018-04-02 | 2018-09-18 | 安徽理工大学 | The buffering energy-absorbing supporting construction and its construction method of a kind of deep tunnel bottom distension control |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB493011A (en) * | 1937-08-26 | 1938-09-30 | David Anderson | Improvements in the construction of linings of tunnels, shafts and similar tubular structures |
| CN1300864A (en) * | 2000-11-23 | 2001-06-27 | 李道韫 | Process for preparing foam metal |
| CN200958394Y (en) * | 2006-09-30 | 2007-10-10 | 中国矿业大学 | Curved arc-plate shrinked wellwall water sealer |
| CN202360105U (en) * | 2011-11-22 | 2012-08-01 | 淮北市平远软岩支护工程技术有限公司 | Gap-exciting pressure-relief soft rock roadway supporting structure |
| CN103075170A (en) * | 2013-01-14 | 2013-05-01 | 中国矿业大学 | Method for controlling surrounding rock deformation of gateway subjected to repeated overhead mining by using hollow grouting anchor cable |
| CN103470270A (en) * | 2013-09-10 | 2013-12-25 | 安徽理工大学 | Deep well ingate supporting structure and construction method thereof |
| CN103485794A (en) * | 2013-09-10 | 2014-01-01 | 安徽理工大学 | Composite ingate supporting structure and construction method thereof |
| CN103939104A (en) * | 2014-04-22 | 2014-07-23 | 安徽理工大学 | Coal mine deep vertical shaft disturbance-resisting ingate structure |
-
2014
- 2014-10-21 CN CN201410562902.4A patent/CN104405398B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB493011A (en) * | 1937-08-26 | 1938-09-30 | David Anderson | Improvements in the construction of linings of tunnels, shafts and similar tubular structures |
| CN1300864A (en) * | 2000-11-23 | 2001-06-27 | 李道韫 | Process for preparing foam metal |
| CN200958394Y (en) * | 2006-09-30 | 2007-10-10 | 中国矿业大学 | Curved arc-plate shrinked wellwall water sealer |
| CN202360105U (en) * | 2011-11-22 | 2012-08-01 | 淮北市平远软岩支护工程技术有限公司 | Gap-exciting pressure-relief soft rock roadway supporting structure |
| CN103075170A (en) * | 2013-01-14 | 2013-05-01 | 中国矿业大学 | Method for controlling surrounding rock deformation of gateway subjected to repeated overhead mining by using hollow grouting anchor cable |
| CN103470270A (en) * | 2013-09-10 | 2013-12-25 | 安徽理工大学 | Deep well ingate supporting structure and construction method thereof |
| CN103485794A (en) * | 2013-09-10 | 2014-01-01 | 安徽理工大学 | Composite ingate supporting structure and construction method thereof |
| CN103939104A (en) * | 2014-04-22 | 2014-07-23 | 安徽理工大学 | Coal mine deep vertical shaft disturbance-resisting ingate structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547648A (en) * | 2018-04-02 | 2018-09-18 | 安徽理工大学 | The buffering energy-absorbing supporting construction and its construction method of a kind of deep tunnel bottom distension control |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104405398B (en) | 2016-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107035387B (en) | A kind of roadway surrounding rock control method under the influence of strong dynamic pressure | |
| CN103195441B (en) | A kind of supporting and reinforcing structure of coal mine tunnel and construction technology thereof | |
| CN102287198B (en) | Construction method for river-crossing shield tunnel crushed stratum communication channel | |
| CN103603675A (en) | Supporting method of permeable soft broken rock stratum roadway | |
| CN105178981A (en) | Total-section closed type deep-shallow coupling yielding, bolting-grouting and supporting method for incompact and fractured soft-rock roadway | |
| CN107246273B (en) | Deep roadway steel wire rope net rubber sprayed concrete supporting structure and construction method thereof | |
| CN102493821B (en) | Support method for high stress roadway coal-rock mass | |
| CN111119935B (en) | Multi-layer grouting reinforcement method for surrounding rock of soft and broken roadway structure | |
| CN105422128A (en) | Method for preventing goaf gas leakage in deep shaft gob-side entry driving | |
| CN105804767B (en) | A kind of the surrounding rock supporting construction method and surrounding rock supporting structure in the aqueous tunnel of coal mine | |
| CN102562093B (en) | Full-length anchoring supporting method with intensive resin anchor rod and anchor-shotcrete net | |
| CN101967984A (en) | Deep well tunnel cable anchor rigid-flexible coupling support and surrounding rock overall reinforced support method | |
| CN102002947A (en) | Explosion expanded internal anchor head prestressed anchor cable for strengthening weak rock and anchoring method thereof | |
| CN101603431A (en) | A kind of method for reinforcing outburst-prone coal seam cross-cut coal uncovering | |
| CN108005675A (en) | The dynamic superposition coupling supporting method and supporting construction in a kind of fault belt tunnel | |
| CN110454206B (en) | Prestressed anchor cable, anchor rod and anchor cable combined support system and soft rock stratum support process | |
| CN105604593A (en) | Three-stage anchoring combined type hollow grouting anchor rod | |
| CN203321531U (en) | Lining processing structure for underground cavern after collapse of top arch | |
| CN104405424A (en) | Full-length-anchoring anchor rod and anchoring method | |
| CN114635720A (en) | Large-section deep-buried soft rock tunnel combined supporting system and construction method | |
| CN108661682A (en) | A kind of weak cementing rich water top plate anchor cable hole grouting water blocking method | |
| CN205063967U (en) | Anti roadway support structure that combines that lets | |
| CN101324064B (en) | Controllable expansion extrusion soil body apparatus for geotechnical engineering and use thereof | |
| CN210977516U (en) | A scour protection energy release composite support structure for rock burst mine tunnel | |
| CN201241344Y (en) | Controllable capsule type expansion device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20171021 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |