CN111706373A - Resin anchoring agent crushing and synergistic mixing method - Google Patents
Resin anchoring agent crushing and synergistic mixing method Download PDFInfo
- Publication number
- CN111706373A CN111706373A CN202010705551.3A CN202010705551A CN111706373A CN 111706373 A CN111706373 A CN 111706373A CN 202010705551 A CN202010705551 A CN 202010705551A CN 111706373 A CN111706373 A CN 111706373A
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- China
- Prior art keywords
- anchoring agent
- crushing
- resin
- resin anchoring
- rib
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Links
- 239000011347 resin Substances 0.000 title claims abstract description 88
- 229920005989 resin Polymers 0.000 title claims abstract description 88
- 238000004873 anchoring Methods 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000002195 synergetic effect Effects 0.000 title claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 238000004806 packaging method and process Methods 0.000 claims description 8
- 238000005553 drilling Methods 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims 1
- 239000003829 resin cement Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 15
- 239000003795 chemical substances by application Substances 0.000 description 44
- 230000003014 reinforcing effect Effects 0.000 description 5
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- OFCNXPDARWKPPY-UHFFFAOYSA-N allopurinol Chemical compound OC1=NC=NC2=C1C=NN2 OFCNXPDARWKPPY-UHFFFAOYSA-N 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The utility model provides a broken and increase mixed method of resin anchoring agent, adopt roofbolter to bore the anchor hole, put into the anchor hole with the resin anchoring agent, then insert broken increase mixed screw mechanism to the anchor hole, broken increase mixed screw mechanism includes that the surface is equipped with the stock body of rod of two horizontal rib subassemblies, stock body of rod top cover has the spiral component of being no less than two intervals settings, the spiral component includes the helical blade of dextrorotation form, helical blade's upper end is equipped with broken tool bit, broken tool bit is broken the wrapping bag of the resin anchoring agent of contact, broken tool bit and helical blade mix the stirring to the resin anchoring agent simultaneously. The resin anchoring agent crushing and synergistic mixing method is convenient to construct and operate, wide in applicability, capable of effectively improving the supporting quality of the resin anchor rod, and fully considering the characteristics of the rod body of the resin anchor rod and the left-handed transverse rib structure, so that the resin anchor rod has good applicability in anchor rod supporting, and the stirring effect of the resin anchoring agent is improved.
Description
Technical Field
The invention relates to the technical field of supporting and reinforcing engineering of mines, dams, underground spaces and the like, in particular to a method for crushing and synergically mixing a resin anchoring agent.
Background
With the rapid development of anchor rod supporting technology, resin anchor rods have already occupied a leading position in the anchor rod field of China, and the utilization rate of the resin anchor rods even reaches 100% in a plurality of large mines. However, with the gradual depletion of shallow mineral resources in China, the resource exploitation is gradually shifted to the deep part, and at the moment, the mine roadway support effect has a crucial influence on the safe and efficient exploitation of resources, so that a need for developing a fine study on how to improve the support quality of the resin anchor rod is urgent. In engineering application, the resin anchor rod only depends on the anchor rod body to crush and stir and mix the resin anchoring agent, and the stirring and mixing effect of the resin anchor rod seriously influences the curing reaction of the resin anchoring agent, so that the anchoring force of the resin anchor rod is influenced. Simultaneously, receive the influence of stock self structural feature, the body of rod surface is comparatively smooth, lacks sharp broken resin anchoring agent outside plastic packaging's structure simultaneously, and it is relatively poor that resin anchoring agent stirring mixes the effect often to appear in the engineering application, and outside plastic packaging is broken thoroughly, appears the phenomenon of plastic packaging parcel stock body of rod even, has seriously influenced resin stock anchor quality, and simultaneously, the broken and relevant auxiliary device or the component of efficiency-enhancing stirring of resin anchoring agent are also comparatively lacked. Therefore, based on this technical background, to the above-mentioned problem, it is urgently needed to design an auxiliary component that has the result of use better, rational in infrastructure and simple, the operation of being convenient for to improve the crushing and the mixed effect of resin anchoring agent, and then promote the support quality of resin anchoring rod to the tunnel country rock.
Disclosure of Invention
In view of the above situation, in order to overcome the defects of the prior art, the present invention aims to provide a method for crushing and synergistic mixing of a resin anchoring agent, which can effectively solve the problems that the stirring and mixing effects of the resin anchoring agent are poor and the plastic package outside the resin anchoring agent is not completely crushed during the supporting process of a resin anchor rod, and effectively improve the supporting quality of the resin anchor rod.
The technical scheme is that the resin anchoring agent crushing and synergistic mixing method comprises the following steps of drilling an anchoring hole by using a jumbolter, putting the resin anchoring agent into the anchoring hole after the anchoring hole is drilled, inserting a crushing and synergistic mixing screw mechanism into the anchoring hole, wherein the crushing and synergistic mixing screw mechanism comprises a jumbolter rod body with two rows of transverse rib components arranged on the outer surface, the top of the jumbolter rod body is sleeved with at least two screw members arranged at intervals, each screw member comprises a right-handed screw blade, the upper end part of each screw blade is provided with a crushing cutter head, the crushing and synergistic mixing screw mechanism is inserted into the anchoring hole, the screw member on the uppermost part is contacted with the resin anchoring agent, then the jumbolter drives the jumbolter rod body to rotate, further drives the screw blades on the jumbolter rod body to rotate, and the crushing cutter head crushes a packaging bag of the contacted resin anchoring agent, resin clay and curing agent in the resin anchoring agent wrapping bag mix and react, broken tool bit and helical blade mix the stirring to the resin anchoring agent simultaneously, under the roofbolter promotes, broken increase mixes the spiral mechanism upward movement, the helical member of lower part contacts with the resin anchoring agent in proper order after that, carry out breakage once more and mix the stirring once more to the wrapping bag of resin anchoring agent to the resin anchoring agent, reach the bottom in anchor hole in the upper end of the stock body of rod after, the stock body of rod stall, after the resin anchoring agent solidifies completely, accomplish the anchor of the stock body of rod.
Preferably, two are listed as cross rib subassembly central symmetry, the cross rib subassembly includes the cross rib of a plurality of levogyration form, the both ends of cross rib all have the chamfer inclined plane, helical blade's inboard is equipped with two sets of rib subassemblies of indulging about its axis symmetry, indulges the rib subassembly and includes that a spacing indulges the rib and compress tightly indulge the rib, and spacing indulges the rib and compress tightly the axis that the rib all is on a parallel with helical blade, spacing indulge rib and stock body surface in close contact with, compress tightly the chamfer inclined plane in close contact with of the cross rib of indulging the rib rather than the contact.
Preferably, the crushing cutter head and the helical blade are of a unitary structure.
Preferably, the height of the spiral blade is 3-5 cm, and the number of spiral torsion turns is 1.7-2.0.
Preferably, the limiting longitudinal rib and the pressing longitudinal rib are both cylindrical.
Preferably, the length of the limiting longitudinal rib and the length of the pressing longitudinal rib are larger than the distance between two adjacent transverse ribs in the same column.
Preferably, the central angle α corresponding to the spacing between the limiting longitudinal rib and the pressing longitudinal rib in the same group of longitudinal rib assemblies is smaller than the central angle β corresponding to the adjacent ends of the transverse ribs in different rows.
The invention has the beneficial effects that: the invention has the beneficial effects that: the method for crushing and synergizing the resin anchoring agent is convenient to construct and operate, has wide applicability, can be widely applied to the technical field of supporting and reinforcing engineering of mines, dams, underground spaces and the like, effectively improves the supporting quality of resin anchor rods, and has obvious engineering application value. The crushing and effect-enhancing mixing spiral mechanism has the advantages of being novel in design, simple in structure and convenient to process, fully considers the structural characteristics of the resin anchor rod body and the left-handed transverse rib, enables the resin anchor rod body and the left-handed transverse rib to have good applicability in anchor rod support, improves the stirring effect of a resin anchoring agent, and further improves the anchoring effect of the anchor rod.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a perspective view of the spiral member of the present invention.
FIG. 3 is a schematic top view of a spiral member according to the present invention.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, a method for crushing and mixing a resin anchoring agent in an synergistic manner is provided, and a crushing and synergistic mixing screw mechanism is provided, which comprises an anchor rod body 1, and is characterized in that two rows of transverse rib components are arranged on the outer surface of the anchor rod body 1, the two rows of transverse rib components are centrosymmetric, each transverse rib component comprises a plurality of left-handed transverse ribs 2, both ends of each transverse rib 2 are provided with chamfer inclined planes 4, at least two spiral members 5 arranged at intervals are sleeved on the top of the anchor rod body 1, each spiral member 5 comprises a right-handed spiral blade 6, two groups of longitudinal rib components are symmetrically arranged on the inner side of each spiral blade 6 relative to the axis of the spiral blade, each longitudinal rib component comprises a limiting longitudinal rib 7 and a pressing longitudinal rib 8, each limiting longitudinal rib 7 and each pressing longitudinal rib 8 are parallel to the axis of each spiral blade 6, and each limiting longitudinal rib 7 is tightly contacted with the outer surface of the anchor rod body 1, the pressing longitudinal rib 8 is in close contact with the chamfer inclined surface 4 of the transverse rib 2 in contact with the pressing longitudinal rib, and the upper end part of the spiral blade 6 is provided with a crushing cutter head 9.
A method for crushing and mixing efficiency of a resin anchoring agent is characterized by comprising the following steps of drilling an anchoring hole 11 by using a jumbolter, putting the resin anchoring agent 10 into the anchoring hole 11 after the anchoring hole is drilled, inserting a crushing and efficiency-increasing mixing screw mechanism into the anchoring hole 11, wherein the crushing and efficiency-increasing mixing screw mechanism comprises a jumbolter rod body 1 with two rows of transverse rib components on the outer surface, the top of the jumbolter rod body 1 is sleeved with at least two screw members 5 arranged at intervals, each screw member 5 comprises a right-handed screw blade 6, the upper end part of each screw blade 6 is provided with a crushing cutter head 9, the crushing and efficiency-increasing mixing screw mechanism is inserted into the anchoring hole 11, the screw member 5 on the uppermost part is in contact with the resin anchoring agent 10, then the jumbolter drives the jumbolter rod 1 to rotate, and further drives the screw blades 6 and the crushing cutter heads 9 on the jumbolter rod body 1 to, broken tool bit 9 is broken the wrapping bag of the resin anchoring agent of contact, resin clay and the curing agent in the resin anchoring agent wrapping bag mix and react, broken tool bit 9 and helical blade 6 mix the stirring to resin anchoring agent 10 simultaneously, under the roofbolter promotion, broken increase mixing screw upward movement, spiral member 5 of lower part further contacts with resin anchoring agent 10 in proper order afterwards, carry out breakage once more and carry out the mixing stirring once more to resin anchoring agent's wrapping bag, reach the bottom of anchor hole 11 in the upper end of the stock body of rod 1 after, the stock body of rod 1 stall, after resin anchoring agent 10 solidifies completely, accomplish the anchor of the stock body of rod 1.
The helical blade 6 is sleeved outside the anchor rod body 1, the two limiting longitudinal ribs 7 are in close contact with the outer surface of the anchor rod body, the two pressing longitudinal ribs 8 are in pressing contact with the chamfer inclined surfaces on the two rows of left-handed transverse ribs 2 respectively, the helical blade 6 is fastened on the anchor rod body 1, and the helical blade 6 rotates along with the anchor rod body 1 to stir and mix the resin anchoring agent. Helical blade 6 is the dextrorotation to, and the cross rib is the levogyration, and the roofbolter drives the stock body of rod 1 and turns right and rotate, then has the relative motion trend between helical component 5 and the stock body of rod 1, and this trend makes the chamfer inclined plane cooperation that compresses tightly vertical rib 8 and cross rib 2 inseparabler, effectively prevents to appear becoming flexible between the rotation in-process helical component 5 and the stock body of rod 1. The distance between adjacent spiral members 5 is 20-40 cm. Through being fixed in the stock body of rod 1 outside, the increase and the contact range of resin anchoring agent can play the effect of similar stirring rake, reinforcing mixes the effect to the stirring of resin anchoring agent.
The crushing cutter head 9 and the helical blade 6 are of an integral structure. Helical blade 6 and broken tool bit 9 are the integrated design, consequently when resin anchoring agent is broken and spiral member 5 rotates along with the stock body of rod 1, under helical blade 6 and the effect of broken tool bit 9, realize the broken and synergistic mixing effect to resin anchoring agent in step to the bonding quality of reinforcing resin stock and country rock, and then promote the anchoring power of resin stock. And when the helical blade 6 rotates clockwise along with the anchor rod body 1, crushing the resin anchoring agent plastic packaging bag.
The height of the spiral blade 6 is 3-5 cm, and the number of spiral torsion turns is 1.7-2.0 circles.
The two ends of the helical blade 6 are provided with crushing cutter heads 9, and the crushing cutter heads 9 and the helical blade 6 are of an integrated structure. The spiral member 5 is sleeved on the anchor rod body 1 without distinguishing the upper end and the lower end, and the crushing effect on the resin anchoring agent can be realized.
The limiting longitudinal rib 7 and the pressing longitudinal rib 8 are both cylindrical. The diameter of the limiting longitudinal rib 7 cylinder is larger than that of the pressing longitudinal rib 8 cylinder.
The length of the limiting longitudinal rib 7 and the length of the pressing longitudinal rib 8 are larger than the distance between two adjacent transverse ribs 2 in the same row. The minimum distance between the two limiting longitudinal ribs 7 is equal to the diameter of the anchor rod body 1, and the minimum distance between the two pressing longitudinal ribs 8 is larger than the diameter of the anchor rod body 1 but smaller than the maximum convolution diameter of the left-handed transverse rib 2.
The central angle alpha corresponding to the distance between the limiting longitudinal rib 7 and the pressing longitudinal rib 8 in the same group of longitudinal rib components is smaller than the central angle beta corresponding to the adjacent ends of the transverse ribs 2 in different rows. The central angle alpha and the central angle beta are both positioned on a plane perpendicular to the axis of the spiral member, two groups of longitudinal rib components are sleeved on the anchor rod body 1 opposite to the space between two rows of transverse rib components, the spiral member 5 can freely move on the anchor rod body 1, when the spiral member 5 reaches a preset position, the spiral member is rotated leftwards by a certain angle, the compression longitudinal ribs 8 are tightly clamped on the chamfer inclined surfaces 4 of the transverse ribs 2, the limiting longitudinal ribs 7 tightly cling to the anchor rod body 1, and therefore the spiral member 5 is fixed on the anchor rod body 1.
The invention has the beneficial effects that: the method for crushing and synergizing the resin anchoring agent is convenient to construct and operate, has wide applicability, can be widely applied to the technical field of supporting and reinforcing engineering of mines, dams, underground spaces and the like, effectively improves the supporting quality of resin anchor rods, and has obvious engineering application value. The crushing and effect-enhancing mixing spiral mechanism has the advantages of being novel in design, simple in structure and convenient to process, fully considers the structural characteristics of the resin anchor rod body and the left-handed transverse rib, enables the resin anchor rod body and the left-handed transverse rib to have good applicability in anchor rod support, improves the stirring effect of a resin anchoring agent, and further improves the anchoring effect of the anchor rod.
The above-mentioned embodiments do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention by those skilled in the art should be included in the protection scope defined by the claims of the present invention without departing from the design concept of the present invention.
Claims (7)
1. A method for crushing and synergizing a resin anchoring agent is characterized by comprising the following steps of drilling an anchoring hole (11) by using a jumbolter, putting the resin anchoring agent (10) into the anchoring hole (11) after the anchoring hole is drilled, inserting a crushing and synergizing mixed spiral mechanism into the anchoring hole (11), wherein the crushing and synergizing mixed spiral mechanism comprises a jumbolter body (1) of which the outer surface is provided with two rows of transverse rib components, the top of the jumbolter body (1) is sleeved with at least two spiral members (5) which are arranged at intervals, each spiral member (5) comprises a right-handed spiral blade (6), the upper end part of each spiral blade (6) is provided with a crushing cutter head (9), the crushing and synergizing mixed spiral mechanism is inserted into the anchoring hole (11), the spiral member (5) at the uppermost part is contacted with the resin anchoring agent (10), and then driving the jumbolter to drive the jumbolter body (1) to rotate, further driving the helical blade (6) and the crushing cutter head (9) on the anchor rod body (1) to rotate, crushing the contacted resin anchoring agent packaging bag by the crushing cutter head (9), mixing the resin cement in the resin anchoring agent packaging bag with the curing agent to react, simultaneously, the crushing cutter head (9) and the helical blade (6) mix and stir the resin anchoring agent (10), under the push of the anchor rod drilling machine, the crushing synergistic mixing spiral mechanism moves upwards, then the spiral component (5) at the lower part is contacted with the resin anchoring agent (10) in sequence, the packaging bag of the resin anchoring agent is crushed again and the resin anchoring agent is mixed and stirred again, after the upper end of the anchor rod body (1) reaches the bottom of the anchoring hole (11), the anchor rod body (1) stops rotating, and after the resin anchoring agent (10) is completely cured, the anchoring of the anchor rod body (1) is completed.
2. The method for crushing and synergistically mixing the resin anchoring agent according to claim 1, wherein two rows of the cross rib assembly are centrosymmetric, the cross rib assembly comprises a plurality of left-handed cross ribs (2), both ends of each cross rib (2) are provided with chamfer slopes (4), the inner side of each spiral blade (6) is symmetrically provided with two groups of longitudinal rib assemblies about the axis of the spiral blade, each longitudinal rib assembly comprises a limiting longitudinal rib (7) and a pressing longitudinal rib (8), each limiting longitudinal rib (7) and each pressing longitudinal rib (8) are parallel to the axis of each spiral blade (6), each limiting longitudinal rib (7) is in close contact with the outer surface of the anchor rod body (1), and each pressing longitudinal rib (8) is in close contact with the chamfer slopes (4) of the cross rib (2) in contact with each limiting longitudinal rib.
3. The method for crushing and synergistically mixing the resin anchoring agent according to claim 1, wherein the crushing head (9) and the helical blade (6) are of one-piece construction.
4. The method for crushing and synergically mixing the resin anchoring agent according to claim 1, wherein the height of the helical blade (6) is 3 to 5cm, and the number of helical twists is designed to be 1.7 to 2.0 turns.
5. The method for fragmenting and synergizing a mixing of a resin anchoring agent according to claim 1, characterized in that said limiting longitudinal ribs (7) and said compacting longitudinal ribs (8) are cylindrical.
6. The method for crushing and synergistically mixing resin anchoring agent according to claim 1, wherein the length of the spacing longitudinal rib (7) and the pressing longitudinal rib (8) is greater than the distance between two adjacent transverse ribs (2) in the same row.
7. The method for crushing and synergizing the mixing of the resin anchoring agent according to claim 1 or 6, wherein the central angle α corresponding to the distance between the limiting longitudinal rib (7) and the pressing longitudinal rib (8) in the same group of longitudinal rib assemblies is smaller than the central angle β corresponding to the adjacent end of the transverse rib (2) in different rows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010705551.3A CN111706373A (en) | 2020-07-21 | 2020-07-21 | Resin anchoring agent crushing and synergistic mixing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010705551.3A CN111706373A (en) | 2020-07-21 | 2020-07-21 | Resin anchoring agent crushing and synergistic mixing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111706373A true CN111706373A (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010705551.3A Pending CN111706373A (en) | 2020-07-21 | 2020-07-21 | Resin anchoring agent crushing and synergistic mixing method |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958352A (en) * | 2021-10-21 | 2022-01-21 | 西南交通大学 | Anchor rod suitable for soft broken rock-soil body and construction method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3108443A (en) * | 1959-07-07 | 1963-10-29 | Schucrmann Fritz | Method of fixing anchor bolts in the drill holes |
| CN105134267A (en) * | 2015-09-10 | 2015-12-09 | 河南理工大学 | Anchor cable anchoring enhancing method and structure |
| CN205895289U (en) * | 2016-08-19 | 2017-01-18 | 泰安振声科技工程有限公司 | Slip casting anchor rope with double -deck thick liquid and spiral stirring function of ending |
| CN109653781A (en) * | 2018-12-11 | 2019-04-19 | 河南理工大学 | Resin anchoring agent broken bag agitating device and its broken bag stirring means |
| CN110439599A (en) * | 2019-07-23 | 2019-11-12 | 河南理工大学 | Radially limit is broken packed sets and its working method for anchor pole |
-
2020
- 2020-07-21 CN CN202010705551.3A patent/CN111706373A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3108443A (en) * | 1959-07-07 | 1963-10-29 | Schucrmann Fritz | Method of fixing anchor bolts in the drill holes |
| CN105134267A (en) * | 2015-09-10 | 2015-12-09 | 河南理工大学 | Anchor cable anchoring enhancing method and structure |
| CN205895289U (en) * | 2016-08-19 | 2017-01-18 | 泰安振声科技工程有限公司 | Slip casting anchor rope with double -deck thick liquid and spiral stirring function of ending |
| CN109653781A (en) * | 2018-12-11 | 2019-04-19 | 河南理工大学 | Resin anchoring agent broken bag agitating device and its broken bag stirring means |
| CN110439599A (en) * | 2019-07-23 | 2019-11-12 | 河南理工大学 | Radially limit is broken packed sets and its working method for anchor pole |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958352A (en) * | 2021-10-21 | 2022-01-21 | 西南交通大学 | Anchor rod suitable for soft broken rock-soil body and construction method |
| CN113958352B (en) * | 2021-10-21 | 2024-01-30 | 西南交通大学 | Anchor rod suitable for weak broken rock-soil body and construction method |
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Application publication date: 20200925 |
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