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CN104278998A - Double-end anchoring type anchor bolt for roadway surrounding rock - Google Patents

Double-end anchoring type anchor bolt for roadway surrounding rock Download PDF

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Publication number
CN104278998A
CN104278998A CN201410486040.1A CN201410486040A CN104278998A CN 104278998 A CN104278998 A CN 104278998A CN 201410486040 A CN201410486040 A CN 201410486040A CN 104278998 A CN104278998 A CN 104278998A
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China
Prior art keywords
resin
rod
medicine volume
diameter
surrounding rock
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Granted
Application number
CN201410486040.1A
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Chinese (zh)
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CN104278998B (en
Inventor
臧传伟
杨柱龙
苏海
程占东
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Shandong University of Science and Technology
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Shandong University of Science and Technology
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Priority to CN201410486040.1A priority Critical patent/CN104278998B/en
Publication of CN104278998A publication Critical patent/CN104278998A/en
Application granted granted Critical
Publication of CN104278998B publication Critical patent/CN104278998B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E21D20/00—Setting anchoring-bolts
    • E21D20/003—Machines for drilling anchor holes and setting anchor bolts

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  • 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)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)

Abstract

本发明公开了一种用于巷道围岩的双端锚固型锚杆，属于矿山巷道等各类岩体中加固用的锚杆技术领域，其在巷道围岩的钻孔内从里到外依次设置有树脂药卷一、隔离棒和树脂药卷二，所述树脂药卷一、树脂药卷二内包裹有树脂锚固剂，在锚杆杆体的尾部套有防漏塞，锚杆体头部依次通过树脂药卷二、隔离棒和树脂药卷一伸入钻孔底部，尾部通过防漏塞对钻孔进行封口，钻孔口处通过托盘和螺母对杆体进行固定。本发明锚杆在进行锚固时，只需将树脂药卷一、隔离棒、树脂药卷二依次装入钻孔，然后利用钻机带动锚杆转动，将树脂药卷一、树脂药卷二进行破碎即可，不需要借助其它手段破碎树脂药卷，可有效控制巷道顶板浅部破碎岩层的离层破坏及破碎岩石的冒落。

The invention discloses a double-end anchorage bolt used for roadway surrounding rock, which belongs to the technical field of bolts used for reinforcement in various rock masses such as mine roadways. There are resin medicine volume 1, spacer rod and resin medicine volume 2. The resin medicine volume 1 and resin medicine volume 2 are wrapped with resin anchoring agent, and the tail of the anchor rod body is covered with a leak-proof plug. The head of the anchor rod body Extend the bottom of the drill hole through the resin drug coil 2, spacer rod and resin drug coil 1 in sequence, seal the drill hole with a leak-proof plug at the tail, and fix the rod body with a tray and a nut at the drill hole opening. When the anchor rod of the present invention is anchored, it is only necessary to sequentially load the resin drug coil 1, the spacer rod and the resin drug coil 2 into the drill hole, and then use the drilling rig to drive the anchor rod to rotate to crush the resin drug coil 1 and the resin drug coil 2 That is, there is no need to use other means to crush the resin rolls, and it can effectively control the delamination damage of the shallow broken rock formation on the roof of the roadway and the caving of the broken rock.

Description

For the both-end anchoring type anchor pole of roadway surrounding rock
Technical field
The present invention relates to the mooring rod technique field reinforced in all kinds of rock mass such as mine working, be specifically related to a kind of mining both-end anchoring type anchor pole.
Background technology
In mine working process of construction, anchor pole becomes most widely used support apparatus, bolt support is the mechanical state being changed country rock itself by the anchor pole of country rock inside, an entirety and stable rock band is formed around tunnel, utilize anchor pole and country rock acting in conjunction, reach the object safeguarding stability of the roadway.Anchor pole can improve rock mass self mechanical property, give full play to rock mass self-bearing ability, the monolithic stability ensureing rock slope body and country rock and safety, betterment works environment and workmanship, saving engineering material and cost, reduction of erection time; Bolt support, not only for preliminary bracing, is also a part for permanent support.Bolt support technology is widely used in mine roadway support, and achieves ideal effect.
At present, in mine laneway bolt support, major part adopts end anchorage, and when back superficial part country rock is comparatively broken, rock stratum is thinner, the supporting effect of end anchorage anchor pole is unsatisfactory, and top board superficial part breaking surrounding rock can not obtain effective anchoring, easy inbreak.During top board paving wire lath, string bag phenomenon is obvious, and the process string bag needs to cut net and releases fractured rock, and workload is large, not only affects roadway construction, and threatens the life security of workman.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, the present invention proposes a kind of both-end anchoring type anchor pole for roadway surrounding rock, this rockbolt installation is simple and convenient, and effectively can suppress the inbreak of top board superficial part breaking surrounding rock and the abscission layer destroy of rock stratum, guarantee roadway support is stablized, and realizes safety in production.
One of task of the present invention is to provide a kind of both-end anchoring type anchor pole for roadway surrounding rock, and its technical solution is:
A kind of both-end anchoring type anchor pole for roadway surrounding rock, it comprises anchor bar body, pallet and nut, described anchor bar body is provided with head, the body of rod and afterbody, resin explosive roll one is disposed with from the inside to surface in the boring of described roadway surrounding rock, spacer rod and resin explosive roll two, described resin explosive roll one, resin anchoring agent is enclosed with in resin explosive roll two, described spacer rod is used for carrying out shutoff to the Anchor Agent in resin explosive roll one, described resin explosive roll one, the total length of spacer rod and resin explosive roll two equals the degree of depth of holing, the afterbody cover of the described body of rod has leakage preventing plug, described leakage preventing plug selects the middle round table-like structure for open circles, its upper surface diameter is less than bore diameter, lower surface diameter is greater than bore diameter, described hollow diameter of a circle is identical with described body of rod diameter, described anchor bar body head stretches into foot of hole by resin explosive roll two, spacer rod and resin explosive roll one successively, and afterbody is sealed boring by described leakage preventing plug, and described hell place is fixed the body of rod by described pallet and nut.
As a preferred version of the present invention, above-mentioned resin explosive roll one, resin explosive roll two are all selected plastic packaging film to wrap up and are formed.
As another preferred version of the present invention, above-mentioned spacer rod is made up of plastic foam.
Two of task of the present invention is to provide a kind of anchoring process of above-mentioned both-end anchoring type anchor pole.
For the anchoring process of the both-end anchoring type anchor pole of roadway surrounding rock, it specifically comprises the following steps:
Step one, to hole on the roadway surrounding rock needing anchoring, make drilling depth equal anchor bar body length;
Step 2, select resin explosive roll one, spacer rod and the resin explosive roll two that match according to drilling depth, resin explosive roll one is put into foot of hole, put into spacer rod, resin explosive roll two more successively, then have the body of rod of leakage preventing plug to pierce foot of hole in afterbody cover, leakage preventing plug is filled in hell;
Step 3, connect rig rotate anchor bar body, resin explosive roll one, resin explosive roll two are stirred evenly, after Anchor Agent solidifies, takes off rig, tray, fastening nut, make pallet jam-packed leakage preventing plug and fix pallet simultaneously.
The length of above-mentioned resin explosive roll one, spacer rod and resin explosive roll two, diameter and quantity are chosen according to boring, total length sum and the drilling depth of three keep identical, spacer rod is cylinder, its diameter is slightly larger than bolt diameter, Design of length is 25 ~ 50cm, also can choose according to actual conditions, or arrange multiple.
Above-mentioned leakage preventing plug is the cork be made up of timber, and the height of this cork is 10cm, and the diameter of its middle open circles equals the diameter of anchor pole.
The present invention proposes a kind of both-end anchoring type anchor pole for roadway surrounding rock, it is disposed with resin explosive roll one, spacer rod and resin explosive roll two from the inside to surface in the boring of roadway surrounding rock, resin anchoring agent is enclosed with in resin explosive roll one, resin explosive roll two, anchoring can be carried out to anchor pole by resin explosive roll one, resin explosive roll two can to the anchoring of top board superficial part broken rock, not only effective support back, and inhibit superficial part broken rock abscission layer destroy and inbreak; Application cork component, it effectively can control Anchor Agent outflow, thus makes Anchor Agent give full play to anchorage effect;
Both-end anchoring type anchor pole of the present invention is when carrying out anchoring, only resin explosive roll one, spacer rod, resin explosive roll two need be loaded boring successively, then rig is utilized to drive anchor pole to rotate, resin explosive roll one, resin explosive roll two are carried out fragmentation, do not need by other means shredded resin powder stick, its making is simple, easy for installation, effectively can control the abscission layer destroy of back superficial part broken rock and the inbreak of fractured rock, maintain the stable of top board, ensure that safety in production, certain reference value is provided to colliery tunnel support.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, explanation clear, complete is further done to the present invention:
Fig. 1 is the structural representation of both-end anchoring type anchor pole of the present invention;
Fig. 2 is spacer rod structural representation of the present invention;
Fig. 3 is the vertical cross section schematic diagram of leakage preventing plug of the present invention;
In figure, 1, resin explosive roll one, 2, spacer rod, 3, leakage preventing plug, 4, pallet, 5, nut, 6, the body of rod, 7, resin explosive roll two.
Detailed description of the invention
The present invention proposes a kind of both-end anchoring type anchor pole for roadway surrounding rock, in order to make advantage of the present invention, technical scheme clearly, clearly, below in conjunction with specific embodiment, explanation clear, complete further being done to the present invention.
A kind of both-end anchoring type anchor pole for roadway surrounding rock, as shown in Figure 1, it comprises resin explosive roll 1, spacer rod 2, leakage preventing plug 3, pallet 4, nut 5, the body of rod 6 and resin explosive roll 27, wherein, the high duty metal body of rod same as the prior art selected by the body of rod 6, leakage preventing plug 3 is middle is the round table-like of open circles, its upper surface diameter is less than bore diameter, lower surface diameter is greater than bore diameter, hollow diameter of a circle is identical with the body of rod 6 diameter, and leakage preventing plug 3 is cork, the afterbody of the body of rod 6 can insert in the open circles of leakage preventing plug 3, leakage preventing plug 3 and the body of rod 6 form integrative-structure,
Resin explosive roll 1 is followed successively by from the inside to surface in the boring of above-mentioned roadway surrounding rock, spacer rod 2 and resin explosive roll 27, wherein, the degree of depth according to boring selects resin explosive roll 1, the total length of spacer rod 2 and resin explosive roll 27, therefore, resin explosive roll 1, spacer rod 2 and the respective length selecting scale of resin explosive roll 27 freer, the length of the preferred spacer rod 2 of the present invention is 25 ~ 50cm, resin explosive roll 1, after arranging successively in spacer rod 2 and resin explosive roll 27 position, by the body of rod 6 with leakage preventing plug 3, the foot of hole being stretched into roadway surrounding rock is started from head one end and anchor head end,
Above-mentioned resin explosive roll 1, resin explosive roll 27 are plastic packaging film parcel and form, and Anchor Agent is arranged in plastic wraps film; Spacer rod 2 is made up of plastic foam, and its shape is identical with the body of rod is cylinder, and the diameter of spacer rod 2 is greater than the diameter of the body of rod, and like this, spacer rod 2 can carry out shutoff to the Anchor Agent in resin explosive roll one, prevents from flowing out.
Because spacer rod is the special construction be made up of plastic foam, therefore, when the body of rod 6 inserts in boring, resin explosive roll two can stir brokenly by the body of rod 6 successively, then through the spacer rod that plastic foam is made, finally stretch into foot of hole again resin explosive roll one is stirred brokenly, like this, the Anchor Agent in resin explosive roll one, resin explosive roll two flows out and then plays the effect of anchoring.
The anchoring process of above-mentioned both-end anchoring type anchor pole, it specifically comprises the following steps:
Step one, to hole on the roadway surrounding rock needing anchoring, make drilling depth equal anchor bar body length;
Step 2, select resin explosive roll one, spacer rod and the resin explosive roll two that match according to drilling depth, resin explosive roll one is put into foot of hole, put into spacer rod, resin explosive roll two more successively, then have the body of rod of leakage preventing plug to pierce foot of hole in afterbody cover, leakage preventing plug is filled in hell;
Step 3, connect rig rotate anchor bar body, resin explosive roll one, resin explosive roll two are stirred evenly, after Anchor Agent solidifies, takes off rig, tray, fastening nut, make pallet jam-packed leakage preventing plug and fix pallet simultaneously.
The present invention effectively suppresses the inbreak of top board superficial part breaking surrounding rock and the abscission layer destroy of rock stratum by being positioned at the resin explosive roll one of bore inner, spacer rod and resin explosive roll two, ensures that roadway support is stablized.

Claims (4)

1.一种用于巷道围岩的双端锚固型锚杆，其包括锚杆体、托盘和螺母，所述锚杆体设有头部、杆体和尾部，其特征在于：在所述巷道围岩的钻孔内从里到外依次设置有树脂药卷一、隔离棒和树脂药卷二，所述树脂药卷一、树脂药卷二内均包裹有树脂锚固剂，所述隔离棒用于对树脂药卷一中的锚固剂进行封堵，所述树脂药卷一、隔离棒和树脂药卷二的总长度等于钻孔的深度，所述杆体的尾部套有防漏塞，所述防漏塞选用中间为空心圆的圆台状结构，其上端面直径小于钻孔直径，下端面直径大于钻孔直径，所述空心圆的直径与所述杆体直径相同；所述锚杆体头部依次通过树脂药卷二、隔离棒和树脂药卷一伸入钻孔底部，尾部通过所述防漏塞对钻孔进行封口，所述钻孔口处通过所述托盘和螺母对杆体进行固定。1. A double-end anchorage type bolt for roadway surrounding rock, which includes a bolt body, a tray and a nut, and the bolt body is provided with a head, a body and a tail, and is characterized in that: In the borehole of the rock, there are resin medicine volume one, spacer rod and resin medicine volume two arranged sequentially from inside to outside. The resin medicine volume one and the resin medicine volume two are wrapped with resin anchoring agent, and the spacer rod is used for The anchoring agent in the resin medicine volume one is blocked, the total length of the resin medicine volume one, the spacer rod and the resin medicine volume two is equal to the depth of the drilled hole, the tail of the rod body is covered with a leak-proof plug, and the anti-leakage plug The drain plug is a circular frustum-shaped structure with a hollow circle in the middle, the diameter of the upper end surface is smaller than the diameter of the borehole, and the diameter of the lower end surface is greater than the diameter of the borehole. The diameter of the hollow circle is the same as the diameter of the rod body; the head of the anchor rod body is sequentially The second resin medicine roll, the isolation rod and the first resin medicine roll extend into the bottom of the borehole, the tail part seals the borehole through the leak-proof plug, and the rod body is fixed by the tray and the nut at the mouth of the borehole. 2.根据权利要求1所述的用于巷道围岩的双端锚固型锚杆，其特征在于：所述树脂药卷一、树脂药卷二均选用塑料包装膜包裹而成。2. The double-end anchorage bolt used for roadway surrounding rock according to claim 1, characterized in that: the first resin drug roll and the second resin drug roll are wrapped with plastic packaging film. 3.根据权利要求1所述的用于巷道围岩的双端锚固型锚杆，其特征在于：所述隔离棒由塑料泡沫制成。3. The double-end anchor bolt used for roadway surrounding rock according to claim 1, characterized in that: the isolation rod is made of plastic foam. 4.根据权利要求1或3所述的双端锚固型锚杆的锚固方法，其特征在于，包括以下步骤：4. The anchoring method of the double-end anchorage type anchor rod according to claim 1 or 3, characterized in that, comprising the following steps: 步骤一、在需要锚固的巷道围岩上钻孔，使得钻孔深度等于锚杆体长度；Step 1. Drill holes on the roadway surrounding rock that needs to be anchored, so that the drilling depth is equal to the length of the anchor rod body; 步骤二、根据钻孔深度来选择相匹配的树脂药卷一、隔离棒和树脂药卷二，将树脂药卷一放入钻孔底部，再依次放入隔离棒、树脂药卷二，然后把尾部套有防漏塞的杆体钻入钻孔底部，将防漏塞塞入钻孔口；Step 2. Select the matching resin medicine volume 1, spacer rod and resin medicine volume 2 according to the drilling depth. Drill the rod with the leak-proof plug at the end into the bottom of the drill hole, and insert the leak-proof plug into the hole; 步骤三、连接钻机并转动锚杆体，将树脂药卷一、树脂药卷二搅匀，待锚固剂凝固后，取下钻机，安装托盘、拧紧螺母，使托盘挤紧防漏塞并同时固定住托盘。Step 3. Connect the drilling rig and rotate the anchor rod body, mix the resin medicine volume 1 and the resin medicine volume 2 evenly, after the anchoring agent is solidified, remove the drilling machine, install the tray, tighten the nut, make the tray squeeze the leak-proof plug and fix it at the same time Hold the tray.
CN201410486040.1A 2014-09-22 2014-09-22 For the both-end anchoring type anchor pole of roadway surrounding rock Expired - Fee Related CN104278998B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105484782A (en) * 2016-01-08 2016-04-13 河南理工大学 Anchor rod for achieving high-prestress total-length anchoring through double-fluid grouting cartridges and use method of anchor rod
CN107191211A (en) * 2017-07-10 2017-09-22 河南理工大学 Fork-shaped anchor pole and its installation method for anchoring breaking roof coal body
CN111677536A (en) * 2020-06-30 2020-09-18 陕西陕煤韩城矿业有限公司 Method for conveying explosive cartridge anchoring agent in soft coal seam

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111412001B (en) * 2020-03-09 2021-07-02 中国矿业大学 Resin anchoring drug roll with function of assisting broken packaging film and installation method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4764055A (en) * 1986-10-02 1988-08-16 Birmingham Bolt Company, Inc. Resin reinforced expansion anchor system
CN2208617Y (en) * 1994-05-25 1995-09-27 中国矿业大学 Double-end anchoring type anchor rod
CN103758551A (en) * 2014-01-22 2014-04-30 山东科技大学 Multistage anchoring type resin anchor rod and anchoring method thereof
CN204200251U (en) * 2014-09-22 2015-03-11 山西潞安集团余吾煤业有限责任公司 For the both-end anchoring type anchor pole of roadway surrounding rock

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4764055A (en) * 1986-10-02 1988-08-16 Birmingham Bolt Company, Inc. Resin reinforced expansion anchor system
CN2208617Y (en) * 1994-05-25 1995-09-27 中国矿业大学 Double-end anchoring type anchor rod
CN103758551A (en) * 2014-01-22 2014-04-30 山东科技大学 Multistage anchoring type resin anchor rod and anchoring method thereof
CN204200251U (en) * 2014-09-22 2015-03-11 山西潞安集团余吾煤业有限责任公司 For the both-end anchoring type anchor pole of roadway surrounding rock

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105484782A (en) * 2016-01-08 2016-04-13 河南理工大学 Anchor rod for achieving high-prestress total-length anchoring through double-fluid grouting cartridges and use method of anchor rod
CN105484782B (en) * 2016-01-08 2018-01-30 河南理工大学 A kind of anchor pole and its application method for realizing high pre-stress full length fastening
CN107191211A (en) * 2017-07-10 2017-09-22 河南理工大学 Fork-shaped anchor pole and its installation method for anchoring breaking roof coal body
CN107191211B (en) * 2017-07-10 2023-03-31 河南理工大学 Fork-shaped anchor rod for anchoring broken roof coal body and mounting method thereof
CN111677536A (en) * 2020-06-30 2020-09-18 陕西陕煤韩城矿业有限公司 Method for conveying explosive cartridge anchoring agent in soft coal seam

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