CN104612731A - Detachable adaptive multistage resistance increase high-strength hollow grouting anchorage tube and construction method thereof - Google Patents
Detachable adaptive multistage resistance increase high-strength hollow grouting anchorage tube and construction method thereof Download PDFInfo
- Publication number
- CN104612731A CN104612731A CN201510036013.9A CN201510036013A CN104612731A CN 104612731 A CN104612731 A CN 104612731A CN 201510036013 A CN201510036013 A CN 201510036013A CN 104612731 A CN104612731 A CN 104612731A
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- China
- Prior art keywords
- tube
- jurisdiction
- section
- hollow grouting
- anchor
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/008—Anchoring or tensioning means
Abstract
The invention discloses a detachable adaptive multistage resistance increase high-strength hollow grouting anchorage tube and a construction method of the detachable adaptive multistage resistance increase high-strength hollow grouting anchorage tube. The detachable adaptive multistage resistance increase high-strength hollow grouting anchorage tube comprises arc-shaped tube sheets, wherein the corresponding tube sheets are connected in a surrounding mode to form an anchorage tube section of a tubular structure. Multiple anchorage tube sections are connected together through connecting clamps, and the anchorage tube sections are assembled. Expansion plugs connected in series through a connecting rod are arranged at the center of the tail of each anchorage tube section. Each tube sheet is provided with grout outlets. The tube sheets are of the same specification and can be machined and produced in batches, construction transportation is facilitated and the tube sheets are conveniently carried and installed by workers; when the external tube sheets are extruded along with surrounding rock, the tube sheets are made to unfold uniformly through the expansion plugs, and friction force between the tube sheets and the surrounding rock is enhanced; meanwhile, the surrounding rock is extruded, and the stress state of the surrounding rock is improved; high-pressure grouting is conducted at the tail of the anchorage tube, so that the surrounding rock is strengthened, binding power of the surrounding rock and the anchorage tube is improved, and latter deformation of the surrounding rock is better controlled.
Description
Technical field
The present invention relates to a kind of detachable adaptive multistage and increase resistance high-strength hollow grouting anchor pile and construction method thereof, particularly relate to a kind of adaptation large deformation, country rock weak broken stratum, detachable high-intensity hollow grouting anchor pile and the installation and application thereof freely assembling multistage increasing resistance.
Background technology
For keeping the sound development at full speed of China's economy, the carrying out that infrastructure is like a raging fire.Be no matter be strengthen the dynamics to development of the West Regions in recent years, or alleviate urban traffic pressure and city underground of building just like a raging fire, many Underground Transportation Engineering all will support issues to country rock after tunnel excavation; Especially the traffic tunnel of the buried high-ground stress of the western overlength of deep mining and China of coal resources, such surrounding rock of chamber weak broken, geological conditions extreme difference, under high stress, country rock easily has the large deformation of the obvious rheological equationm of state, how effective surrounding rock supporting is implemented to such chamber, also face many challenges newly.At present for tunnel and the mine of self stability extreme difference, its supporting and protection structure is more common is that i iron bow member, grid steel frame etc. coordinate Bolt net and jet technology to carry out combined supporting.
The rise of New Austrian Tunneling Method, makes anchor pole, important component part that grouting anchor pile supporting controls as a kind of important surrounding rock stability.Deep Underground Space exploitation faces the problems such as heavily stressed, large deformation, difficult supporting, the anchor pole of traditional form, dimensions is more single, and often occur being pulled out along with surrouding rock deformation or the phenomenon such as fracture, dynamic self adaptation cannot be realized according to the deformation of country rock and increase resistance reinforcing, effective guarantee can not be provided to chamber long-term stability.
Summary of the invention
The object of the invention is for overcoming above-mentioned the deficiencies in the prior art, detachable adaptive multistage is provided to increase resistance high-strength hollow grouting anchor pile, can solve in Deep Underground Space digging process, the anchor pole dimensions of traditional form is more single, and often occur being pulled out along with surrouding rock deformation or the problem such as fracture, this grouting anchor pile can realize increasing resistance according to the dynamic self adaptation of the deformation anchor pole of country rock and reinforce, for chamber long-term stability provides effective guarantee.
For achieving the above object, the present invention adopts following technical proposals:
Detachable adaptive multistage increases resistance high-strength hollow grouting anchor pile, and comprise the section of jurisdiction of arc, described section of jurisdiction is enclosed and is connected into tubular structure, is a joint anchor tube; Linked together by Connection Card between described anchor tube, be assembled into more piece; Each joint anchor tube afterbody center described is provided with the expansible stopper of being connected by connecting rod, and described section of jurisdiction is provided with slurry outlet.
The two ends of described section of jurisdiction are equipped with groove, the groove at described two ends section of jurisdiction enclose be connected into anchor tube after all form a circular passage, in described circular passage, card has rubber ring, completes the connection between section of jurisdiction.
Head and the afterbody of described section of jurisdiction are equipped with through hole, and described Connection Card is C type structure, complete the connection that anchor tube is saved in front and back two in the through hole that Connection Card snaps in section of jurisdiction.
The two ends of described C type structural openings are equipped with inside bending.
Round and smoothly between described Connection Card and the through hole of section of jurisdiction to be connected.
Described expansible stopper is fixed on connecting rod by locator card.
Described expansible stopper is the variable cross-section truncated conical shape of same size at diverse location place, expansible stopper is fixed on deep stabilizing surrounding rock by connecting rod, section of jurisdiction radially slides with superficial part country rock extrusion deformation, there is displacement to axial in section of jurisdiction and expansible stopper, if in like manner suppose, section of jurisdiction is static, then expansible stopper can be considered along connecting rod and clamp-ons section of jurisdiction to deep wall rock direction, three sections of jurisdiction are opened due to clamp-oning of wedge shape expansible stopper, each joint anchor tube is same component composition evenly, increases resistance to realize each joint anchor tube in different surrounding rock depth adaptivity.
Described connecting rod buries country rock depths underground by increasing resistance frame.
Described injected hole blossom type is distributed on section of jurisdiction, colored hole, for the diffusion of slurries during later stage slip casting.Blossom type perforations adding mode Appropriate application pipe shaft space, and the intensity of section of jurisdiction can be ensured, and be convenient to the diffusion of slurries.
Described ring-type high tenacity part is rubber ring.
Detachable adaptive multistage increases the construction method of resistance high-strength hollow grouting anchor pile, comprises the following steps:
Step 1: the reinforce adjoining rock degree of depth as required, determines that anchor tube needs to be made up of a few joint flower section of jurisdiction, hole and Connection Card;
Step 2: the ad-hoc location by locator card, expansible stopper being fixed on connecting rod, identical to make the interval between expansible stopper and save the length of anchor tube, install and increase resistance frame;
Step 3: assembled around connecting rod section of jurisdiction, flower hole, and the two ends being fixed each joint anchor tube by ring-type high tenacity part, connected by Connection Card between each joint anchor tube;
Step 4: by reinforce adjoining rock punch after, clamp-on Anchor Agent, assembling anchor tube structure headed into projected depth in hole, ensure connecting rod and increasing blocked portion by Anchor Agent and country rock anchoring closely knit; Grouting and reinforcing is carried out by assembling anchor tube structure tail portions high pressure after surrouding rock deformation is stable.
Beneficial effect of the present invention is:
1) each joint anchor tube can consist of rubber ring splicing 3 sections of jurisdiction, film clips hole, and each joint anchor tube is connected by 3 Connection Cards, and Connection Card and section of jurisdiction are smoothly connected, and every a slice section of jurisdiction can be rotated in certain limit under the constraint of rubber ring;
2) can according to the scope of reinforce adjoining rock (degree of depth), the joint number of unrestricted choice assembling anchor tube; Each pipe joint sheet specification is identical, can realize mass processing, and convenient construction transport simultaneously and workman carry installation;
3) expansible stopper is fixed on deep wall rock does not deform (or micro-strain) place by increasing blocked portion and connecting rod, outside section of jurisdiction along with country rock extrude time, connecting rod and expansible stopper motionless, section of jurisdiction radially slides with country rock, the relative variable cross-section expansible stopper in section of jurisdiction is moved, and three sections of jurisdiction of the anchor tube that expansible stopper wedge shape border makes each save evenly are opened, and increases the frictional force of section of jurisdiction and country rock, extrude country rock simultaneously, improve the stress of country rock;
4) after country rock initial stage drastic deformation, by section of jurisdiction cavity, carry out high-pressure slip-casting at anchor tube afterbody, slurries are diffused into country rock by the gap of splitting between section of jurisdiction and slurry outlet; Not only strengthen country rock, also improve the adhesion stress of country rock and anchor tube simultaneously, better control the later stage distortion of country rock.
Accompanying drawing explanation
The assembly structure schematic diagram of the three joint hollow grouting anchor piles that Fig. 1 provides for the embodiment of the present invention;
The plane axis of the three joint hollow grouting anchor piles that Fig. 2 provides for the embodiment of the present invention is to expansion schematic diagram;
Fig. 3 is the three joint connecting rod of hollow grouting anchor pile inside and the structural representations of expansible stopper in Fig. 1;
In figure, 1 is flower section of jurisdiction, hole, and 2 is Connection Card, and 3 is slurry outlet, and 4 is rubber ring, and 5 is locator card, and 6 is expansible stopper, and 7 is connecting rod, and 8 for increasing resistance frame.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in Figure 1, detachable adaptive multistage increases resistance high-strength hollow grouting anchor pile, and it mainly comprises section of jurisdiction, colored hole 1, Connection Card 2, slurry outlet 3, rubber ring 4, locator card 5, expansible stopper 6, connecting rod 7, increases resistance frame 8.Flower section of jurisdiction, hole 1 is 120 ° of arc sections of jurisdiction.
As shown in Figure 2,3 sections of jurisdiction, film clips hole 1 of hollow grouting anchor pile form a joint by rubber ring 4, freely more piece can be assembled according to the degree of depth of reinforce adjoining rock, and each joint is connected by 3 Connection Cards 2, round and smoothly to be connected between Connection Card 2 with flower section of jurisdiction, hole 1, flower section of jurisdiction, hole 1 can be rotated within the scope of certain angle; At each joint afterbody of inside configuration, the expansible stopper 6 of being connected by connecting rod 7 is installed; Connecting rod 7 buries country rock depths underground by increasing resistance frame 8; Blossom type is distributed in the slurry outlet 3 of section of jurisdiction, colored hole 1, is the diffusion for slurries during later stage slip casting.
Detachable adaptive multistage increases the construction method of resistance high-strength hollow grouting anchor pile, sets forth further by reference to the accompanying drawings to it:
1) reinforce adjoining rock scope (degree of depth) as required, determines to need a few joint flower section of jurisdiction, hole 1 and Connection Card 2 forms;
2) by locator card 5, expansible stopper 6 is fixed on the ad-hoc location of connecting rod 7, installs and increase resistance frame 8;
3) spend section of jurisdiction, hole 1 to assemble around connecting rod 7, and fix the two ends of each joint structure by rubber ring 4, each joint structure is connected by Connection Card 2.
4) be reinforced country rock punching after, clamp-on appropriate Anchor Agent, package assembly headed into projected depth in hole, ensure connecting rod 7 and increase blocked portion 8 by Anchor Agent and country rock anchoring closely knit; Grouting and reinforcing is carried out by structure tail portions high pressure after surrouding rock deformation is stable.
In the present invention, connecting rod can be that high strength cast iron also can be made up of high tenacity multiply steel strand.
The present invention only sets forth for example one tunnel and mine bolt support, but is applicable to the supporting of subway, karst chamber, dark hole, side slope and some special underground constructions too.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (10)
1. detachable adaptive multistage increases resistance high-strength hollow grouting anchor pile, and it is characterized in that, comprise the section of jurisdiction of arc, described section of jurisdiction is enclosed and is connected into tubular structure, is a joint anchor tube; Linked together by Connection Card between described anchor tube, be assembled into more piece; Each joint anchor tube afterbody center described is provided with the expansible stopper of being connected by connecting rod, and described section of jurisdiction is provided with slurry outlet.
2. hollow grouting anchor pile as claimed in claim 1, it is characterized in that, the two ends of described section of jurisdiction are equipped with groove, the groove at described two ends section of jurisdiction enclose be connected into anchor tube after all form a circular passage, in described circular passage, card has rubber ring, completes the connection between section of jurisdiction.
3. hollow grouting anchor pile as claimed in claim 1, it is characterized in that, head and the afterbody of described section of jurisdiction are equipped with through hole, and described Connection Card is C type structure, complete the connection of front and back two joint anchor tube in the through hole that Connection Card snaps in section of jurisdiction.
4. hollow grouting anchor pile as claimed in claim 3, it is characterized in that, the two ends of described C type structural openings are equipped with inside bending.
5. hollow grouting anchor pile as claimed in claim 1, is characterized in that, round and smoothly between described Connection Card and the through hole of section of jurisdiction is connected.
6. hollow grouting anchor pile as claimed in claim 1, it is characterized in that, described expansible stopper is fixed on connecting rod by locator card, and described connecting rod buries country rock depths underground by increasing resistance frame.
7. hollow grouting anchor pile as claimed in claim 1, it is characterized in that, described expansible stopper is the variable cross-section truncated conical shape of same size at diverse location place.
8. hollow grouting anchor pile as claimed in claim 1, it is characterized in that, described slurry outlet blossom type is distributed on section of jurisdiction, colored hole.
9. hollow grouting anchor pile as claimed in claim 1, it is characterized in that, described ring-type high tenacity part is rubber ring.
10. detachable adaptive multistage increases the construction method of resistance high-strength hollow grouting anchor pile, it is characterized in that, comprises the following steps:
Step 1: the reinforce adjoining rock degree of depth as required, determines that anchor tube needs to be made up of a few joint flower section of jurisdiction, hole and Connection Card;
Step 2: the ad-hoc location by locator card, expansible stopper being fixed on connecting rod, identical to make the interval between expansible stopper and save the length of anchor tube, install and increase resistance frame;
Step 3: assembled around connecting rod section of jurisdiction, flower hole, and the two ends being fixed each joint anchor tube by ring-type high tenacity part, connected by Connection Card between each joint anchor tube;
Step 4: by reinforce adjoining rock punch after, clamp-on Anchor Agent, assembling anchor tube structure headed into projected depth in hole, ensure connecting rod and increasing blocked portion by Anchor Agent and country rock anchoring closely knit; Grouting and reinforcing is carried out by assembling anchor tube structure tail portions high pressure after surrouding rock deformation is stable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510036013.9A CN104612731B (en) | 2015-01-23 | 2015-01-23 | Detachable adaptive multistage increases resistance high-strength hollow grouting anchor pile and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510036013.9A CN104612731B (en) | 2015-01-23 | 2015-01-23 | Detachable adaptive multistage increases resistance high-strength hollow grouting anchor pile and construction method thereof |
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| Publication Number | Publication Date |
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| CN104612731A true CN104612731A (en) | 2015-05-13 |
| CN104612731B CN104612731B (en) | 2016-11-30 |
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| CN201510036013.9A Active CN104612731B (en) | 2015-01-23 | 2015-01-23 | Detachable adaptive multistage increases resistance high-strength hollow grouting anchor pile and construction method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706374A (en) * | 2020-06-30 | 2020-09-25 | 河海大学 | Anchor head expansion resistance-increasing type drainable multistage yielding anchor rod |
| CN112664251A (en) * | 2020-12-30 | 2021-04-16 | 开滦（集团）有限责任公司 | Hydraulic expansion type grouting anchor rod and anchoring method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86102783A (en) * | 1986-04-17 | 1987-10-28 | 雷蒙德·托马斯·布卢姆菲尔德 | The improvement of roofbolt post |
| KR100784491B1 (en) * | 2006-08-28 | 2007-12-11 | 해동소재산업(주) | A fixing tools for rock bolt |
| CN201033872Y (en) * | 2007-04-23 | 2008-03-12 | 中国京冶工程技术有限公司深圳分公司 | Slip casting type anchor bar |
| CN201050379Y (en) * | 2007-07-10 | 2008-04-23 | 北京瑞威大地工程技术有限公司 | Combined grouting anchor pile |
| CN201158818Y (en) * | 2007-12-14 | 2008-12-03 | 张向阳 | Anti-corrosion anchor bar with centering slurry guiding tube |
| JP4311872B2 (en) * | 2000-10-23 | 2009-08-12 | 株式会社ティーエフティー | Self-drilling lock bolt device and self-drilling lock bolt method |
| CN204059352U (en) * | 2014-07-16 | 2014-12-31 | 陕西师范大学 | A kind of earthen ruins reinforces anchor pole |
| CN204492855U (en) * | 2015-01-23 | 2015-07-22 | 山东大学 | Detachable adaptive multistage increases resistance high-strength hollow grouting anchor pile |
-
2015
- 2015-01-23 CN CN201510036013.9A patent/CN104612731B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86102783A (en) * | 1986-04-17 | 1987-10-28 | 雷蒙德·托马斯·布卢姆菲尔德 | The improvement of roofbolt post |
| JP4311872B2 (en) * | 2000-10-23 | 2009-08-12 | 株式会社ティーエフティー | Self-drilling lock bolt device and self-drilling lock bolt method |
| KR100784491B1 (en) * | 2006-08-28 | 2007-12-11 | 해동소재산업(주) | A fixing tools for rock bolt |
| CN201033872Y (en) * | 2007-04-23 | 2008-03-12 | 中国京冶工程技术有限公司深圳分公司 | Slip casting type anchor bar |
| CN201050379Y (en) * | 2007-07-10 | 2008-04-23 | 北京瑞威大地工程技术有限公司 | Combined grouting anchor pile |
| CN201158818Y (en) * | 2007-12-14 | 2008-12-03 | 张向阳 | Anti-corrosion anchor bar with centering slurry guiding tube |
| CN204059352U (en) * | 2014-07-16 | 2014-12-31 | 陕西师范大学 | A kind of earthen ruins reinforces anchor pole |
| CN204492855U (en) * | 2015-01-23 | 2015-07-22 | 山东大学 | Detachable adaptive multistage increases resistance high-strength hollow grouting anchor pile |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706374A (en) * | 2020-06-30 | 2020-09-25 | 河海大学 | Anchor head expansion resistance-increasing type drainable multistage yielding anchor rod |
| CN112664251A (en) * | 2020-12-30 | 2021-04-16 | 开滦（集团）有限责任公司 | Hydraulic expansion type grouting anchor rod and anchoring method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104612731B (en) | 2016-11-30 |
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