CN105065037A - Double-layer arch center support construction method for highway soft rock tunnel - Google Patents
Double-layer arch center support construction method for highway soft rock tunnel Download PDFInfo
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- CN105065037A CN105065037A CN201510423860.0A CN201510423860A CN105065037A CN 105065037 A CN105065037 A CN 105065037A CN 201510423860 A CN201510423860 A CN 201510423860A CN 105065037 A CN105065037 A CN 105065037A
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Abstract
The invention discloses a double-layer arch center support construction method for a highway soft rock tunnel. The method comprises the following steps of: 1, construction preparation: respectively manufacturing an inner layer steel arch center and an outer layer steel arch center, tightly attaching the two layers of steel arch centers and welding the two layers of steel arch centers; 2, advancing duct application: sequentially performing hole drilling, pipe conveying, sealing and grouting; 3, hole body excavation: performing construction and excavation by a three-bench seven-step excavation method or a short-bench method; 4, steel arch center installation: tightly attaching the outer layer steel arch center to the inner wall of a hole excavated in the step 3; 5, installation of lock foot steel pipes, steel bar net pieces and longitudinal connecting bars; and 6, concrete spraying. The double layer steel arc centers are used in the early support stage of the highway soft rock tunnel, i.e., in the tunnel of surrounding rock with continuous high ground stress and sock rock great deformation features, an inner and outer layer arch center continuous installing technology is used and the two layers of steel centers are continuously installed and connected, so that a strong-force early-stage support steel framework is formed for effectively resisting the surrounding rock pressure.
Description
Technical field
The present invention relates to technical field of tunnel construction, the double-deck bow member construction method for supporting of especially a kind of highway soft rock tunnel.
Background technology
Along with the fast development of mountainous area highway, soft rock tunnel appears in highway construction more and more.The country rock main manifestations of soft rock tunnel is that crack and joints development, occurrence are disorderly, fold obviously, rock crushing and weakness, intensity are low, stability extreme difference, some soft rock is also with high-ground stress, there is rheological behavior, tunnel stress redistribution deadline after excavation is longer, and stress distribution is uneven.Due to the above-mentioned characteristic of soft rock, if Tunnel is weak, can causes and just prop up steel arch-shelf torsional deformation, sprayed mortar cracking falls block, just prop up and invade the problems such as limit, have a strong impact on construction quality and the safety in tunnel, incur loss through delay the construction period.
The problem of disease easily occurs for soft rock tunnel preliminary bracing, and traditional solution carries out injecting grout through steel perforated pipe reinforce adjoining rock, suppresses wall rock loosening ring distortion, reduces steel arch-shelf spacing simultaneously or improve steel arch-shelf model, increase sprayed mortar thickness.But after such scheme construction, the tunnel of part country rock extreme difference still occurs just serving as a contrast the phenomenons such as crack, scaling, steel arch-shelf torsional deformation.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, propose the double-deck bow member construction method for supporting of a kind of highway soft rock tunnel, easy and simple to handle, a series of disease problems that highway soft rock tunnel causes because preliminary bracing is not in place can be effectively prevent.
In order to realize foregoing invention object, the invention provides following technical scheme: the double-deck bow member construction method for supporting of a kind of highway soft rock tunnel, comprises the following steps:
(1), preparation of construction: comprise and make internal layer steel arch-shelf and outer steel arch-shelf respectively, two-layer steel arch-shelf is close to closely knit and is welded;
(2), advanced conduit applies: comprise boring successively, send pipe, seal and slip casting;
(3), tunnel cutting: adopt three step seven step excavating load or three step seven step excavating load construction and excavations;
(4), the installation of steel arch-shelf: the hole inwall that (3) outer steel arch-shelf and step dig is close to;
(5), lock pin steel pipe, reinforced mesh and longitudinal dowel are installed;
(6), sprayed mortar.
Further, the radius of curvature of internal layer steel arch-shelf and outer steel arch-shelf is all different with section length.
Further, step is (3) in tunnel cutting process, when occurring backbreaking,
1., be less than 50cm, adopt same label sprayed mortar to backfill;
2., be greater than 50cm or occur small-sized chamber of collapsing, speed spray process is carried out to country rock, jet thickness should control at 5cm ~ 10cm, steel arch-shelf, mesh sheet and longitudinal dowel are installed, sprayed mortar, form preliminary bracing carrying housing, with lumps of wood buttress to the supporting of preliminary bracing housing, chamber of collapsing is backfilled to fill concrete sizing.
Further, the weld circumferential distance of internal layer steel arch-shelf and outer steel arch-shelf is not more than 50cm, and fusion length is not less than 10cm.
Further, the arch springing place of internal layer steel arch-shelf is higher than the arch springing place 30cm of outer steel arch-shelf.
Further, the length of each step of three step seven step excavating load is 3 ~ 6m, and the distance between inverted arch and face is within 25m.
Compared with prior art, the present invention has the following advantages: the preliminary bracing of highway soft rock tunnel adopts clad steel bow member, in the tunnel being in lasting high-ground stress and soft rock large deformation characteristic country rock, adopt the technology that ectonexine bow member is installed continuously, two-layer steel arch-shelf is installed continuously and is linked together, form powerful preliminary bracing steel frame, effectively to resist pressure from surrounding rock.After tunnel piercing has been excavated, perform system anchor bolt immediately and slip casting, installation steel mesh reinforcement, then outer steel arch-shelf is installed, continuous installation nexine steel arch-shelf after completing, and clad steel bow member is close to closely connected, after being connected firmly by welding means, performing lock foot anchoring stock, installing longitudinal connecting reinforcement, disposable jet concrete completes preliminary bracing.
Accompanying drawing explanation
Fig. 1 is schematic flow sheet of the present invention.
Detailed description of the invention
Describe the present invention below in conjunction with accompanying drawing, the description of this part is only exemplary and explanatory, should not have any restriction to protection scope of the present invention.
The double-deck bow member construction method for supporting of a kind of highway soft rock tunnel as shown in Figure 1, comprises the following steps:
1, preparation of construction
1) steel arch-shelf concentrated processing place will take into full account the working region of the passage that shaped steel is marched into the arena and crane, loader and handling vehicle, arranges processing, storage area, layout of making rational planning for.
2) according to the model allotment shaped steel of the clad steel bow member of design, carrying out testing inspection by criticizing after marching into the arena, after determining that quality of materials meets national standard, can use.Defective material is all cleared out a gathering place or is returned goods.
3) technique preparation
1. organizational technology personnel learn drawing, grasp design idea;
2. the data such as digging in-situ profile, excavation height, anticipated settlement are collected.
2, the processing and fabricating of steel arch-shelf
1), before bow member processing, first according to index Design segmentation bow member sizes such as anticipated settlement, erection sequence, seam areas, and simplation verification is carried out with cad technique.For avoiding the generation stress of bow member junction to concentrate, the seam profile of double-deck bow member must stagger.
2) in clad steel bow member supporting construction, the radius of curvature of ectonexine bow member is all different with section length, and specifications and models are also not quite similar, and therefore necessary batch processing, stores classifiedly, and carry out mark, to avoid and obscure.
3) according to the bow member radian designed and length, bending loose tool is set on hydraulic cold bender.Loose tool by 2cm steel plate processing and fabricating, can be welded in the curved platform of forming mill.During shaped steel clod wash, slowly advance shaped steel with the jack of forming mill, often advance 5cm to measure the index such as shaped steel levelness, until reach required design radian.
4) bow member link arranges junction plate, and the junction plate side being positioned at inside and outside layer bow member adjacent surface should align with the wing plate of bow member, to ensure that double-deck bow member when mounted can be closely connected.Secondly, bow member junction is the weak part of arch frame structure, ensure the welding quality of shaped steel and junction plate, must not occur the quality problems such as sand holes, slag inclusion, weld seam be not full.
5) arrange special bow member detection model, after bow member machines, on detection model, examination is spelled, and can store classifiedly after qualified.The process velocity of bow member is as the criterion to meet site operation needs, in order to avoid because of Change in surrounding rocks, the indexs such as anticipated settlement change and cause waste of material.
3, advanced conduit applies
1) hole
Adopt general T Y28 air pressure gun Φ 50 bit bore, hole depth is greater than design load 10cm.After reaching projected depth, extract drilling rod immediately and carry out sending plumber sequence.
2) pipe is sent
Because soft rock hole wall after holing has retraction in a small amount, air pressure gun can be adopted to be headed into by ductule.Ductule afterbody should weld hoop of putting more energy into and prevent from air pressure gun from sending during pipe being broken by ductule afterbody, affects welding of ductule afterbody and the external silk head of grouting valve.
3) seal
First use the space between loose hemp fiber shutoff ductule and country rock, then use mortar shutoff.Reach after requirement until intensity and weld nipple and mounting ball valve, prepare slip casting.
4) slip casting
Slurries make in strict accordance with design mixture proportion, and grouting pressure meets design requirement.
4, tunnel cutting
Highway soft rock tunnel generally adopts three step seven step excavating load or the construction of short benching tunnelling method.To advance geologic prediction be carried out before excavation, according to the prediction to square geological condition in face of excavation, select suitable excavation method and branch's length of bench.
1) three step seven step excavations
Three step seven step excavating load adopt three layers of short step, substep parallel excavation, the cut to lengthen of each step at 3 ~ 6m, within the distance between inverted arch and face is strict controlled in 25m.Top bar excavation time remaining core soil in advance, excavation length should not be greater than 2.0m; Middle step should not be greater than 3m with each excavation length of getting out of a predicament or an embarrassing situation, and at least 3m that mutually staggers before and after left and right sides.Preferentially should select mechanical equivalent of light excavation during excavation, excavation mechinery is milling digging machine or hydraulic breaking hammer, when meeting hard boulder, after weak blast can be adopted to loosen, then uses mechanical equivalent of light excavation.The bottomed place of bow member reserves 20cm hand excavation, forbids to backbreak and causes bow member unsettled.
2) to backbreak process
Because soft surrounding rock globality is poor, self-stable ability is low, and surrouding rock deformation is excessive, easily occur that unstability is caved in, the outer rock mass of outline excavation is difficult to form stable Load-carring arch, backbreaks or small-sized landslide, when especially Rock Joints Surrounding is horizontal even if adopt mechanical equivalent of light excavation also to there will be.The same label sprayed mortar that adopts being less than 50cm for backbreaking backfills, be greater than 50cm or occur small-sized chamber of collapsing according to following process flow process:
1. warning line is set, withdraws personnel and equipment to safe place, and strict implement export & import personnel resignation system.
2. arrange special messenger conscientiously to observe the country rock at chamber place of collapsing and neighbouring first, after country rock is basicly stable (country rock generally showing as chamber place of collapsing no longer drop disintegrating slag 30 minutes), speed spray is carried out to country rock and processes.
3. adopt C25 sprayed mortar to have chamber place of collapsing and expose the spray of country rock speed, if speed spray time collapse chamber excessive or danger is higher time, can the rifle head of spray windlass be fixed on excavator bucket, handle excavator and implement movable spray, avoid the potential safety hazard of personnel's direct operation, jet thickness should control at 5cm ~ 10cm.
4. after the concrete of speed spray forms some strength, according to design drawing, steel arch-shelf, mesh sheet and longitudinal dowel are installed, sprayed mortar, form preliminary bracing carrying housing.Preliminary bracing must be closed to face, ready for backfilling chamber of collapsing.
5. temporary lining, can adopt the lumps of wood to pile up neatly the supporting of preliminary bracing housing, prepares chamber backfill of collapsing.
6., after preliminary bracing carrying housing forms some strength and temporary lining completes, to collapsing, chamber backfills.
7. above-mentioned operation completes and is formed after some strength until fill concrete, can carry out next circulation.
5, bow member is installed
1) bow member is installed
1. check whether outline excavation meets designing requirement, if there is when backbreaking according to 5.2.4.2) process, owe to dig part and supplement to be excavated to and meet designing requirement.
2. bow member arch springing must adopt the lumps of wood to carry out pad, ensures that bow member is supported on solid ground.
3. double-deck bow member will be close to closely knit and weld, and weld circumferential distance is not more than 50cm, and fusion length is not less than 10cm, is close to leakiness place and adopts steel plate according to the circumferential distance filling of weld and weld with bow member between double-deck bow member.
Will be close between the shaped steel 4. and country rock, the part be not close to country rock adopts timber wedge by bow member and country rock wedging along steel arch-shelf outer rim, and spacing should not be greater than 2m.
5. inboard bow member arch springing place is higher than outside bow member 30cm, with facilitate with in, the bow member of getting out of a predicament or an embarrassing situation is connected.
6. the high-strength bolt of bow member junction is installed and must be met design and code requirement, and the junction plate of adjacent bow member fully will lean on reality.If any gap, the steel plate filling also firm welding that available thickness is suitable.
7. other indexs such as verticality, spacing of double-deck bow member meet code requirement.
2) lock pin steel pipe, reinforced mesh and longitudinal dowel to install
1. the connection of pin steel pipe and bow member is locked
The connection of lock pin steel pipe and bow member adopts punches in advance in shaped steel wing plate side, directly penetrates and utilize " L " steel bar to carry out welding the method combined, and guarantees that lock pin steel pipe is firmly connected with bow member.
2. reinforced mesh, longitudinal dowel are installed
Welding and the overlap joint of reinforced mesh will meet code requirement; Welding and the lap length of longitudinal dowel meet code requirement.
3) easily get out of a predicament or an embarrassing situation when constructing and be connected the solution of not straight problem with middle step bow member
1. strictly control the distance of upper, middle and lower step, each length of bench should control at 4-6m, performs inverted arch in time and reaches quick closure Cheng Huan.
2. strict arch springing absolute altitude when controlling excavation, after stopping to occur to backbreak, the higher or multilayer lumps of wood of pad causes distortion convergence excessive.
3. according to monitoring and measurement data, middle step bow member adds reserves amount of convergence man-hour.
6, sprayed mortar
Adopt dampen shotcreting method sprayed mortar, essentials for Construction Control is:
1) raw material of sprayed mortar will meet code requirement.
2) preparation before sprayed mortar injection is carried out, every preparations such as the integrity of such as wind, equipment, the ventilation lighting condition of work plane and concrete mix transport.
3) because the principal element affecting concrete strength is water-cement ratio, the principal element affecting time of setting is the volume of Admixture, therefore when constructing at the scene, strictly will control the volume of water-cement ratio and Admixture.
4) guarantee that sprayed mortar sprays by various measure closely knit, especially will note adjusting spray angle, ensure that the interstitial concrete of double-deck bow member is even, closely knit.
Construction method advantage of the present invention is as follows:
(1) applicability is strong.Double-deck bow member is processed and installs substantially identical with conventional individual layer arch construction, without the need to increasing equipment, without the need to special training personnel.
(2) safety is good.After adopting double-deck section-steel support, personnel in hole, equipment availability are safer, and just the safety factor of a structure self improves.
(3) reliable in quality.Double-deck bow member supporting, improves the intensity of Tunnel, and to be staggered technology by bow member seam, eliminate the hidden danger of quality of bow member junction, engineering entity quality improves.
(4) the reduction of erection time.Highway soft rock tunnel adopts double-deck section-steel support, avoids the generation of preliminary bracing disease, can ensure tunnel balanced construction continuously, shorten the duration.
(5) be applicable to the preliminary bracing of highway soft rock tunnel.
When implementing construction method of the present invention, material and facility used is as following table 1 and table 2:
Main material table table 1
List of main equipment table 2
The standards and norms that quality control of the present invention performs
1) quality control meets the regulation of " highway tunnel construction technical specification " (JTJF60-2009) and " highway tunnel construction technical manual " (JTG/TF60-2009).
2) construction of main material and examination meet " highway engineering cement based cement concrete testing regulation " (JTGE30-2005), " highway engineering gather materials testing regulation " (JTGE42-2005) and " reinforcement welding and standards of acceptance " (JGJ18-2003), " Technical code for shotcrete rock bolts shore " (GB50086-2001).
3) inspection of quality meets the regulation of " Of Road Engineering Quality Checking And Evaluation standard " (JTG/F80/1-2004).
Test item of the present invention, inspection methods and criteria
1) overall, the supporting test item in tunnel and standard are in table 3, table 4
The overall test item in tunnel and standard scale 3
Supporting test item and standard scale 4
2) bow member supporting actual measurement project and standard are in table 5
Bow member supporting actual measurement project and standard scale 5
3) bolt support construction quality standard is in table 6
Bolt support construction quality standard scale 6
4) steel mesh reinforcement supporting construction quality specifications is in table 7
Steel mesh reinforcement supporting construction quality specifications table 7
Adopt highway soft rock tunnel clad steel bow member preliminary bracing construction method of the present invention, construction speed is accelerated, and drill footage per month speed can reach 60m.There is not collapse safety, the quality accidents such as chamber, just a disease, decrease a large amount of economic losses, just prop up the scheme of disease relative to reprocessing after individual layer supporting, greatly reduce engineering cost and safety, quality risk.To the design and construction of highway soft rock tunnel preliminary bracing from now on, there is directive function, there is good economic benefit and social benefit.
Defects Treatment construction method duration, the cost table of comparisons after double-deck supporting and individual layer supporting
Application example
1, engineering name: speedway Cheng County, Pingliang, Gansu Province to Wudu to Wudu section civil works the 18 contract section
1.1 project sites: Wudu city, macromycetes resources inLonglan area of Gansu
1.2 construction costs: 5.18 hundred million yuan.
1.3 construction periods: in November, 2011 goes into operation, in November, 2014 completes.
1.4 project profiles: what western tunnel, Wudu was positioned at western suburb, Wudu city 10, Gansu Province km does not have water mountain, left line length 3763m, right line length 3781m, tunnel surrounding is mainly thousand pieces of culms changed, and occurrence is disorderly, and fold is obvious, and joints development, rock mass is very broken.More than 1000m, there is high-ground stress in the maximum buried depth in tunnel, due to the impact by time green tape tectonic stress brute force release of F5 tomography, tunnel is in soft rock large deformation section, surrounding rock stability extreme difference.After completing according to individual layer supporting, the diseases such as early period of origination Support Deformation, steel arch-shelf distortion, destruction, through linking up with owner unit and designing unit, change to double-deck bow member construction method for supporting, efficiently solve the disease problem of a just distortion, constructed a rear just Stability Analysis of Structures, tunnel total quality is qualified.In work progress, there is not safety and quality accident together.
2# tunnel, gorge, Kowloon is positioned at gorge, the Kowloon gorge segment on the right side of provincial highway S313, and tunnel entrance is positioned at song cloth card ditch along connecing 1# tunnel, gorge, Kowloon, and Sui Zhi district belongs to East of Tibetan Plateau edge, and area, Mount Min mountain range, belongs to WEST QINLING geosynclinal folded system.Tunnel beginning and end pile No. K93+860-K95+680, overall length 1820m.The wherein maximum 32m of K94+950 ~ K95+500 barrel section hole top buried depth, excavate in the slate united in tunnel under Silurian, attitude of rocks 125 ° of ∠ 29 °, 80 ° ∠ 64 °, foliation is grown, crushing rock formation, and rock mass is middle lamellar structure, top girth rock local, hole is arranged in severely-weathered layer, country rock is substantially without self-stable ability, and high-ground stress distributes, and belongs to highway soft rock tunnel.Adopt clad steel bow member preliminary bracing construction technology in construction, a rear just Stability Analysis of Structures of having constructed, tunnel total quality is qualified, and quality, security incident together do not occur in construction.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. the double-deck bow member construction method for supporting of highway soft rock tunnel, comprises the following steps:
(1), preparation of construction: comprise and make internal layer steel arch-shelf and outer steel arch-shelf respectively, two-layer steel arch-shelf is close to closely knit and is welded;
(2), advanced conduit applies: comprise boring successively, send pipe, seal and slip casting;
(3), tunnel cutting: adopt three step seven step excavating load or three step seven step excavating load construction and excavations;
(4), the installation of steel arch-shelf: the hole inwall that (3) outer steel arch-shelf and step dig is close to;
(5), lock pin steel pipe, reinforced mesh and longitudinal dowel are installed;
(6), sprayed mortar.
2. the double-deck bow member construction method for supporting of highway soft rock tunnel as claimed in claim 1, is characterized in that: the radius of curvature of internal layer steel arch-shelf and outer steel arch-shelf and section length are all different.
3. the double-deck bow member construction method for supporting of highway soft rock tunnel as claimed in claim 1, is characterized in that: step is (3) in tunnel cutting process, when occurring backbreaking,
1., be less than 50cm, adopt same label sprayed mortar to backfill;
2., be greater than 50cm or occur small-sized chamber of collapsing, speed spray process is carried out to country rock, jet thickness should control at 5cm ~ 10cm, steel arch-shelf, mesh sheet and longitudinal dowel are installed, sprayed mortar, form preliminary bracing carrying housing, with lumps of wood buttress to the supporting of preliminary bracing housing, chamber of collapsing is backfilled to fill concrete sizing.
4. the double-deck bow member construction method for supporting of highway soft rock tunnel as claimed in claim 1, is characterized in that: the weld circumferential distance of internal layer steel arch-shelf and outer steel arch-shelf is not more than 50cm, and fusion length is not less than 10cm.
5. the double-deck bow member construction method for supporting of highway soft rock tunnel as claimed in claim 1, is characterized in that: the arch springing place of internal layer steel arch-shelf is higher than the arch springing place 30cm of outer steel arch-shelf.
6. the double-deck bow member construction method for supporting of highway soft rock tunnel as claimed in claim 1, is characterized in that: the length of each step of three step seven step excavating load is 3 ~ 6m, and the distance between inverted arch and face is within 25m.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130983A (en) * | 2017-06-19 | 2017-09-05 | 贵州开磷建设集团有限公司 | A kind of large cross-section tunnel tunneling construction grillage strengthening supporting method |
| CN108952763A (en) * | 2018-06-29 | 2018-12-07 | 四川新筑智能工程装备制造有限公司 | A kind of equipment and its engineering method for vcehicular tunnel, railway tunnel supporting construction |
| CN108952783A (en) * | 2018-08-01 | 2018-12-07 | 中铁十九局集团第六工程有限公司 | A kind of dual supporting pre-embedded construction method in tunnel |
| CN109057821A (en) * | 2018-09-28 | 2018-12-21 | 浙江八达隧道工程股份有限公司 | Highway soft rock tunnel bilayer arch supporting construction system and its construction method |
| CN110397455A (en) * | 2019-08-06 | 2019-11-01 | 樊建昆 | Highway soft rock tunnel bilayer arch supporting construction system and its construction method |
| CN110735654A (en) * | 2019-11-27 | 2020-01-31 | 周伟永 | arch center for supporting underground tunnel and roadway engineering and rapid supporting method thereof |
| CN110847932A (en) * | 2019-09-12 | 2020-02-28 | 中交投资南京有限公司 | Double-layer preliminary bracing construction method based on small clear distance tunnel |
| CN111219199A (en) * | 2020-01-14 | 2020-06-02 | 中国建筑第五工程局有限公司 | Arch frame yielding support structure and construction method |
| CN112855225A (en) * | 2021-03-01 | 2021-05-28 | 中铁上海工程局集团有限公司 | High-safety soft rock tunnel support construction method |
| CN112855225B (en) * | 2021-03-01 | 2024-04-30 | 中铁上海工程局集团有限公司 | Soft rock tunnel supporting construction method with high safety |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19828503B4 (en) * | 1998-06-26 | 2007-03-15 | Seiz Tunnelausbau Systeme Gmbh | Two-belt extension frame for mine and tunnel construction |
| CN102562075A (en) * | 2012-03-09 | 2012-07-11 | 中交第二公路工程局有限公司 | Large cross-section weak surrounding rock tunnel three-step and six-part short-distance construction method |
| CN102606162A (en) * | 2012-02-08 | 2012-07-25 | 中铁四局集团第二工程有限公司 | Quick construction method for weak surrounding rock shallowly-buried easily-collapsed area of tunnel |
| CN104533446A (en) * | 2015-01-16 | 2015-04-22 | 中交一公局第一工程有限公司 | Construction method and structure of two-layer preliminary support for preventing geological disaster of large-section weak surrounding rock tunnel |
-
2015
- 2015-07-20 CN CN201510423860.0A patent/CN105065037A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19828503B4 (en) * | 1998-06-26 | 2007-03-15 | Seiz Tunnelausbau Systeme Gmbh | Two-belt extension frame for mine and tunnel construction |
| CN102606162A (en) * | 2012-02-08 | 2012-07-25 | 中铁四局集团第二工程有限公司 | Quick construction method for weak surrounding rock shallowly-buried easily-collapsed area of tunnel |
| CN102562075A (en) * | 2012-03-09 | 2012-07-11 | 中交第二公路工程局有限公司 | Large cross-section weak surrounding rock tunnel three-step and six-part short-distance construction method |
| CN104533446A (en) * | 2015-01-16 | 2015-04-22 | 中交一公局第一工程有限公司 | Construction method and structure of two-layer preliminary support for preventing geological disaster of large-section weak surrounding rock tunnel |
Non-Patent Citations (1)
| Title |
|---|
| 蒋建林等: "董箐水电站导流洞冒顶塌方处理施工技术", <<人民长江>> * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130983A (en) * | 2017-06-19 | 2017-09-05 | 贵州开磷建设集团有限公司 | A kind of large cross-section tunnel tunneling construction grillage strengthening supporting method |
| CN108952763A (en) * | 2018-06-29 | 2018-12-07 | 四川新筑智能工程装备制造有限公司 | A kind of equipment and its engineering method for vcehicular tunnel, railway tunnel supporting construction |
| CN108952783A (en) * | 2018-08-01 | 2018-12-07 | 中铁十九局集团第六工程有限公司 | A kind of dual supporting pre-embedded construction method in tunnel |
| CN109057821A (en) * | 2018-09-28 | 2018-12-21 | 浙江八达隧道工程股份有限公司 | Highway soft rock tunnel bilayer arch supporting construction system and its construction method |
| CN110397455A (en) * | 2019-08-06 | 2019-11-01 | 樊建昆 | Highway soft rock tunnel bilayer arch supporting construction system and its construction method |
| CN110847932A (en) * | 2019-09-12 | 2020-02-28 | 中交投资南京有限公司 | Double-layer preliminary bracing construction method based on small clear distance tunnel |
| CN110735654A (en) * | 2019-11-27 | 2020-01-31 | 周伟永 | arch center for supporting underground tunnel and roadway engineering and rapid supporting method thereof |
| CN111219199A (en) * | 2020-01-14 | 2020-06-02 | 中国建筑第五工程局有限公司 | Arch frame yielding support structure and construction method |
| CN112855225A (en) * | 2021-03-01 | 2021-05-28 | 中铁上海工程局集团有限公司 | High-safety soft rock tunnel support construction method |
| CN112855225B (en) * | 2021-03-01 | 2024-04-30 | 中铁上海工程局集团有限公司 | Soft rock tunnel supporting construction method with high safety |
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Application publication date: 20151118 |
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