CN201206470Y - Yield press anchor cable - Google Patents

Yield press anchor cable Download PDF

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Publication number
CN201206470Y
CN201206470Y CNU2008200374599U CN200820037459U CN201206470Y CN 201206470 Y CN201206470 Y CN 201206470Y CN U2008200374599 U CNU2008200374599 U CN U2008200374599U CN 200820037459 U CN200820037459 U CN 200820037459U CN 201206470 Y CN201206470 Y CN 201206470Y
Authority
CN
China
Prior art keywords
anchorage cable
cable
anchorage
anchor cable
roadways
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.)
Expired - Fee Related
Application number
CNU2008200374599U
Other languages
Chinese (zh)
Inventor
王连国
吴宇
缪协兴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China University of Mining and Technology CUMT
Original Assignee
China University of Mining and Technology CUMT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China University of Mining and Technology CUMT filed Critical China University of Mining and Technology CUMT
Priority to CNU2008200374599U priority Critical patent/CN201206470Y/en
Application granted granted Critical
Publication of CN201206470Y publication Critical patent/CN201206470Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

A yielding anchorage cable is suitable for the yield of a mine, a tunnel and an underground engineering support. The anchorage cable is composed of an anchorage cable body, a tray arranged on the anchorage cable body, an anchorage cable lock for fixing the tail part of the anchorage cable body and a yielding device arranged between the anchorage cable body and the anchorage cable lock; and an anchorage agent stirring head is arranged at the head part of the anchorage cable body. When the roadways are excavated, the bolting is carried out simultaneously; the anchorage cable has the function of coordinating the problems that the extensibility of the anchorage bar and the anchorage cable in the anchorage cable combined support is low and the anchorage bar is deformed and not matched, so that the anchorage bar and the anchorage cable play respective bearing roles; the roadways are formed for one time, thereby accelerating the construction of the roadways and reducing the cost of the support; the anchorage cable can be prevented from being pulled apart under the situations that the roadways have larger deformation, and can fully provide the supporting force; the delay construction is not required, and the stability of the roadways can be ensured effectively. The anchorage cable has the advantages of simple structure, convenient construction, good supporting effect and wide practicability.

Description

A kind of pressure anchor cable that allows
Technical field
The utility model relates to a kind of anchor cable, especially a kind of be used for mine, tunnel and underground engineering support allow the pressure anchor cable.
Background technology
China Mine Geological condition more complicated, along with the increase of pit mining intensity with adopt dark continuing to increase, the tunnel proportion that is fit to the common bolt supporting is more and more littler, and the relatively poor IV of stability of the roadway, V class tunnel proportion is increasing, the tunnel that influenced by the deep bump, the high seam workings subject to dy namic pressure of top coal caving, soft-rock tunnel and the proportion increase of compound roof tunnel are the most obvious.These tunnels can not keep the stable of tunnel with the common bolt supporting merely, must adopt anchor cable to carry out reinforcing.Current anchor pole and the anchor cable combined supporting of adopting in coal mine roadway, it is more and more general to become.In anchor pole and anchor cable combined supporting, there is the problem of harmony.The combined supporting of coordinating can be brought into play anchor pole and anchor cable supporting performance separately to greatest extent mutually, can by mutual coordination and associating, obtain maximum supporting effect according to its supporting characteristic separately again.
The minor diameter prestress anchorage cable has obtained extensive utilization as a kind of reinforcement technology in the mine bolt supporting.Its effect is that the secondary bearing bed that bolt support forms is linked to each other with the key stratum of country rock, gives full play to the supporting capacity of deep wall rock, and wider rock mass is carried jointly, improves the stability of support system.The small-bore prestress anchorage cable uses 1 * 7 standard steel section twisted wire in " steel strand for prestressed concrete " national standards (GB/T5224-1995), this steel strand have the characteristics of anti-destructive power height, good toughness, underrelaxation, existing certain rigidity has certain flexibility again, flexible and realize self agitating resin powder stick Fast Installation, be adapted at using in the less coal road of bulk.See that the elongation per unit length of steel strand only has 3.5% on the engineering properties of widely used minor diameter anchor cable (15.24mm and 17.8mm) on the colliery, and the engineering elongation per unit length of anchor cable is 1.8%, and the elongation per unit length of anchor pole is generally between 20%~25%.In the anchor cable of 6m commonly used in the engineering and the combining anchor support system of 2m, the maximum elongation of anchor cable is 108mm, and the maximum elongation of anchor pole is 400mm, non-deformability differs bigger between the two as can be seen, so the carrying of anchor pole and anchor cable is asynchronous, is easy to generate anchor cable and is at first broken the back anchor pole and just begin to bring into play the carrying effect.
Summary of the invention
The purpose of this utility model is to overcome the problem that exists in the prior art, provides a kind of simple in structure, easy construction, and supporting effect is good allows the pressure anchor cable.
The pressure anchor cable that allows of the present utility model comprises the anchor cable cable body, is located at the pallet of anchor cable cable body, and the anchor cable lockset of the afterbody of mooring anchor rustling sound body is provided with between described pallet and the anchor cable lockset and allows pressure device, the head of anchor cable cable body be provided with anchoring agent stirring-head.
Described allow pressure device by a middle part projection, can provide 50~100mm deformation space allow pressure pipe and be located at and allow the packing ring at pressure pipe two ends constitute.
The utility model takes into full account the release principle in tunnel and the deformation characteristics of bolt support, adopts hollow allow pressure pipe, has increased anchoring agent stirring-head in the anchor cable termination simultaneously, can fully stir the anchoring agent like this and strengthen anchoring effect.When tunnel initating and bolt support carry out simultaneously, has the low and unmatched effect of bolt deformation of the anchor pole of coordination and anchor cable combined supporting stream line elongation per unit length, make anchor shaft anchor cable bring into play separately carrying effect simultaneously, roadway construction has been accelerated in the tunnel one-shot forming, has reduced support cost, anchor cable has in the tunnel under the situation of moderate finite deformation can be avoided being broken, have the advantage that supporting power can fully be provided, need not the construction that lags behind, can effectively guarantee the stability in tunnel simultaneously.It is simple in structure, easy construction, and supporting effect is good, has practicality widely.
Description of drawings
Fig. 1 is a structure chart of the present utility model;
Fig. 2 is A-A view of Fig. 1.
Among the figure: 1-anchor cable lockset; The 2-packing ring; 3-allows pressure pipe; The 4-pallet; 5-anchor cable cable body; 6-anchoring agent stirring-head; The 7-steel strand.
The specific embodiment
Below in conjunction with accompanying drawing an embodiment of the present utility model is further described:
Shown in Figure 1, allow press anchor cable by anchor cable lockset 1, allow pressure device, pallet 4, anchor cable cable body 5 and anchoring agent stirring-head 6 constitute.Anchor cable cable body 5 is made of seven strands of steel strand, and is shown in Figure 2.Allow pressure device by a middle part projection, can provide 50~100mm deformation space allow pressure pipe 3 and be located at and allow the packing ring 2 at pressure pipe 3 two ends constitute.Anchoring agent stirring-head 6 is located at the head of anchor cable cable body 5, allows pressure device and pallet 4 be set on the anchor cable cable body 5, and fixing by anchor cable lockset 1, anchor cable lockset 1 is made of packing ring and nut.
Principle use in work: because country rock is disturbed, broken the original equilibrium relation of the stress of primary rock when tunnel is just dug, regional area stress can occur and concentrates in the country rock, and these secondary stress will make country rock produce distortion up to the new equilibrium relation of formation.Behind the roadway excavation, be provided with when anchor pole is set and originally allow the pressure anchor cable, the reinforcement effect by anchor pole forms anchor petrous branch watch box, and anchor cable then is fixed on formed anchor petrous branch watch box to cover to be stablized on the rock stratum.When country rock generation moderate finite deformation, the anchor pole bearing capacity increases, and distortion strengthens.Originally allow and press corresponding carrying of anchor cable and distortion also to increase, but, at first will allow pressure pipe flatten during surrouding rock deformation, make anchor cable distortion when bearing capacity increases keep coordinating with bolt deformation owing to allow the effect of pressure pipe.Can allow country rock that certain distortion is arranged, discharge surrouding rock deformation and can form new equilibrium state, can make anchor cable keep bearing capacity again, avoid destroyed country rock in certain deformation range, can keep homeostasis.

Claims (2)

1. one kind allows the pressure anchor cable, comprise anchor cable cable body (5), be located at the pallet (4) of anchor cable cable body (5), the anchor cable lockset (1) of the afterbody of mooring anchor rustling sound body (5), it is characterized in that: be provided with between described pallet (4) and the anchor cable lockset (1) and allow pressure device, the head of anchor cable cable body (5) is provided with anchoring agent stirring-head (6).
2, according to the described pressure anchor cable that allows of claim 1, it is characterized in that: described allow pressure device by a middle part projection, can provide the pressure pipe (3) and being located at of allowing of the deformation space of 50~100mm allow packing ring (2) formation at pressure pipe (3) two ends.
CNU2008200374599U 2008-05-29 2008-05-29 Yield press anchor cable Expired - Fee Related CN201206470Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008200374599U CN201206470Y (en) 2008-05-29 2008-05-29 Yield press anchor cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008200374599U CN201206470Y (en) 2008-05-29 2008-05-29 Yield press anchor cable

Publications (1)

Publication Number Publication Date
CN201206470Y true CN201206470Y (en) 2009-03-11

Family

ID=40465537

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008200374599U Expired - Fee Related CN201206470Y (en) 2008-05-29 2008-05-29 Yield press anchor cable

Country Status (1)

Country Link
CN (1) CN201206470Y (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101929347A (en) * 2010-08-17 2010-12-29 中南大学 Coordinated-deformation energy-absorption anchor rod suitable for mining high-stress large-deformation rock mass
CN102002946A (en) * 2010-10-23 2011-04-06 山东科技大学 Anchor bolt or anchor cable pre-stressed control element and processing and usage method thereof
CN102322267A (en) * 2011-09-12 2012-01-18 山东科技大学 Method for preventing and controlling rock burst in soft rock of deep well
CN103244162A (en) * 2013-05-27 2013-08-14 湖南科技大学 Compressible base plate device and anchor cable anchorage method by device
CN103410543A (en) * 2013-08-13 2013-11-27 中国矿业大学 Pressure yielding internally-grouted anchor cable
CN104100281A (en) * 2014-06-16 2014-10-15 山东科技大学 Mining multilevel pressure-relief anti-scouring support device, support system and use methods thereof
CN110924999A (en) * 2019-12-12 2020-03-27 山东里能鲁西矿业有限公司 Anchor-withdrawing yielding device
CN111608710A (en) * 2020-06-09 2020-09-01 河海大学 Full-length hollow drainage resistance-increasing type yielding anchor rod

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101929347A (en) * 2010-08-17 2010-12-29 中南大学 Coordinated-deformation energy-absorption anchor rod suitable for mining high-stress large-deformation rock mass
CN102002946A (en) * 2010-10-23 2011-04-06 山东科技大学 Anchor bolt or anchor cable pre-stressed control element and processing and usage method thereof
CN102002946B (en) * 2010-10-23 2012-07-25 山东科技大学 Anchor bolt or anchor cable pre-stressed control element and processing and usage method thereof
CN102322267A (en) * 2011-09-12 2012-01-18 山东科技大学 Method for preventing and controlling rock burst in soft rock of deep well
CN103244162A (en) * 2013-05-27 2013-08-14 湖南科技大学 Compressible base plate device and anchor cable anchorage method by device
CN103410543A (en) * 2013-08-13 2013-11-27 中国矿业大学 Pressure yielding internally-grouted anchor cable
CN104100281A (en) * 2014-06-16 2014-10-15 山东科技大学 Mining multilevel pressure-relief anti-scouring support device, support system and use methods thereof
CN110924999A (en) * 2019-12-12 2020-03-27 山东里能鲁西矿业有限公司 Anchor-withdrawing yielding device
CN111608710A (en) * 2020-06-09 2020-09-01 河海大学 Full-length hollow drainage resistance-increasing type yielding anchor rod

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090311

Termination date: 20160529