CN103277122B - Method for drilling anchor rod hole and anchoring anchor rod in broken roof - Google Patents
Method for drilling anchor rod hole and anchoring anchor rod in broken roof Download PDFInfo
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- CN103277122B CN103277122B CN201310207314.4A CN201310207314A CN103277122B CN 103277122 B CN103277122 B CN 103277122B CN 201310207314 A CN201310207314 A CN 201310207314A CN 103277122 B CN103277122 B CN 103277122B
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- rod
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- anchor
- drilling rod
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Abstract
The invention provides a method for drilling an anchor rod hole and anchoring an anchor rod in a broken roof. The method includes the following steps that (1) the depth of a drill hole and the length of the anchor rod are determined according to supporting parameters of the anchor rod of broken surrounding rocks, and then two hollow tubular drill rods are connected according to the depth of the drill hole, or a connecting rod is arranged between the threaded ends of the two drill rods in a connected mode to form a combination drill rod; (2) the end, provided with a square inner buckle, of one drill rod is connected with a drill bit in a sleeved mode, and the end, provided with a square inner buckle, of the other drill rod is connected to a drill rig for drilling; (3) the drill rig is dismantled, the drill rods are exposed, and then a cement cartridge is sent to the bottom of a drill rod center hole through the anchor rod; (4) the anchor is pushed into the cement cartridge through the drill rig, the drill rod connected with the drill bit in the sleeved mode is withdrawn, and after 20-30 minutes, an arch supporting plate and a spherical nut are mounted at the end, extending out of the surrounding rocks, of the anchor rod. According to the method, the drill rods and the connecting rod are of a hollow tubular structure, and protective holes of the drill rods and the connecting rod avoid a hole collapse before anchoring the anchor rod; the cement cartridge is used as an anchoring agent, so that the anchoring is prevented from loosing efficacy.
Description
Technical field
The present invention relates to one in breaking roof, bore bolthole and anchor rod anchored method.
Background technology
Along with the increase of coal mining depth, part mine working presents the features such as large deformation, wall rock loosening ring scope is large, roadway surrounding rock is broken, makes roadway maintenance difficulty; In addition, in ultra close distance coal seam exploitation and separate zone production, its stope drift active workings top board is all more broken, adopts bolt support often to run into boring collapse hole and resin anchoring failure phenomenon in breaking surrounding rock.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides one and can avoid collapse hole of holing, that fastening invalidation phenomenon can be prevented again to occur bores bolthole and anchor rod anchored method in breaking roof.
The technical solution used in the present invention is: one bores bolthole and anchor rod anchored method in breaking roof, comprises the steps:
1) drilling rod is assembled: according to breaking surrounding rock Bolting Parameters determination drilling depth and rock-bolt length, when drilling depth is less than the length of a drilling rod, connected by adapter sleeve by the end of thread of the drilling rod of the tubular structure of two hollows; When drilling depth is greater than the length of a drilling rod, between the end of thread of two drilling rods, connect a connecting rod by adapter sleeve; Described connecting rod is made up of a connecting rod, or is connected to form by adapter sleeve by many connecting rods, and described connecting rod is the tubular structure of hollow;
2) hole: one end of the square interior button of a drilling rod and drill bit are socketed; One end of the square interior button of another drilling rod connects rig, boring;
3) cement-roll is placed: after boring, the drilling rod unloading rig and be connected with rig, then soaked cement-roll is filled in the centre bore of the drilling rod be socketed with drill bit, then head on anchor pole the cement-roll filled in and be sent to along the centre bore of drilling rod at the bottom of the hole of centre bore together;
4) anchoring: after cement-roll is in place, heads in cement-roll with rig by anchor pole, then slowly exits the drilling rod be socketed with drill bit, waits for 20 ~ 30 minutes, and arch supporting plate and spherical nut are installed in the one end of stretching out country rock at anchor pole, and screw spherical nut.
Compared with prior art, the invention has the beneficial effects as follows: 1. drilling rod of the present invention and connecting rod are the tubular structure of hollow that there is borehole wall-protection and endoporus filling cement-roll and anchor pole function; After boring, owing to having hollow drill pipe and connecting rod guard aperture, ensure that filling cement-roll and smoothly anchor rod anchored, avoid anchor rod anchored front collapse hole.2. drilling rod of the present invention and drill bit take socket mode to be connected, and after fill in cement-roll and anchor rod body in boring, drill bit can uncoupling automatic with drilling rod, is convenient to hollow drill pipe and exits.3. anchor pole press-in cement-roll anchorage style of the present invention, add anchor pole and the cement-roll Anchor Agent compactness in borehole space, Anchor Agent is contacted with country rock tightly, and fill up hole wall circumferential crack, improve the anchor-holding force of anchor bolt of breaking surrounding rock, avoid the fluidity cement in resin anchoring agent run off from hole wall crack and cause fastening invalidation problem.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1, country rock, 2, drill bit, 3, drilling rod, 4, adapter sleeve, 5 connecting rods, 51 connecting rods, 6, cement-roll, 7, anchor pole, 8, arch supporting plate, 9, spherical nut.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, the present invention includes following steps:
1) drilling rod is assembled: according to breaking surrounding rock 1 Bolting Parameters determination drilling depth and rock-bolt length; When drilling depth is less than the length of a drilling rod 3, the end of thread of the drilling rod 3 of the tubular structure of two hollows is connected by adapter sleeve 4; When drilling depth is greater than the length of a drilling rod 3, between the end of thread of two drilling rods 3, connect a connecting rod 5 by adapter sleeve 4; Described connecting rod 5 is made up of a connecting rod 51, or is connected to form by adapter sleeve 4 by many connecting rods 51, the described tubular structure of connecting rod 51 in hollow.
2) hole: one end of square for drilling rod 3 interior button and drill bit 2 are socketed; One end of the square interior button of another drilling rod 3 connects rig, boring.
3) cement-roll 6 is placed: after boring, the drilling rod unloading rig and be connected with rig, then soaked cement-roll 6 is filled in the centre bore of the drilling rod be socketed with drill bit 2, then head on anchor pole 7 cement-roll 6 filled in and be sent to along the centre bore of drilling rod 3 together at the bottom of the hole of centre bore.
4) anchoring: after cement-roll 6 is in place, heads in cement-roll 6 with rig by anchor pole 7, then slowly exits the drilling rod 3 and connecting rod 5 that are socketed with drill bit 2; Wait for 20 ~ 30 minutes, arch supporting plate 8 and spherical nut 9 are installed in the one end of stretching out country rock 1 at anchor pole 7, and screw the pretightning force that spherical nut 9 provides 30 ~ 50kN.
It is long that every root drilling rod 3 and connecting rod 51 are 1.0m; The internal diameter of drilling rod 3 and connecting rod 51 is 28mm.After boring, owing to having drilling rod 3 and connecting rod 5 guard aperture of hollow, before avoiding anchor pole 7 anchoring collapse hole and because of boring collapse hole cause cement-roll 6 and anchor pole 7 cannot send in hole.Meanwhile, because drilling rod 3 and drill bit 2 are socketed, after filling in cement-roll 6 and anchor pole 7 in the centre bore toward drilling rod 3, drill bit 2 can uncoupling automatic with drilling rod 3, is convenient to exiting of the drilling rod 3 be connected with drill bit 2.If anchor pole 7 adopts hollow bolt, the later stage can also toward slip casting in breaking surrounding rock 1, shutoff crack.The anchor pole 7 that the present invention uses is high-strength screw-thread steel anchor pole or hollow grouting anchor, and cement-roll 6 makes the Anchor Agent of anchor pole 7, and the fluidity cement in resin anchoring agent can be avoided to run off from hole wall crack and cause fastening invalidation.
Claims (3)
1. in breaking roof, bore bolthole and an anchor rod anchored method, it is characterized in that, comprise the steps:
1) according to breaking surrounding rock Bolting Parameters determination drilling depth and rock-bolt length, when drilling depth is less than the length of a drilling rod: the end of thread of the drilling rod of the tubular structure of two hollows is connected by adapter sleeve; When drilling depth is greater than the length of a drilling rod: connect connecting rod by adapter sleeve between the end of thread of two drilling rods; Described connecting rod is made up of a connecting rod, or is connected to form by adapter sleeve by many connecting rods, and described connecting rod is the tubular structure of hollow;
2) one end of square for drilling rod interior button and drill bit are socketed; One end of the square interior button of another drilling rod connects rig, boring;
3) after boring, the drilling rod unloading rig and be connected with rig, then fills in soaked cement-roll in the centre bore of the drilling rod be socketed with drill bit, then heads on anchor pole the cement-roll filled in and be sent to along the centre bore of drilling rod at the bottom of the hole of centre bore together;
4) after cement-roll is in place, head in cement-roll with rig by anchor pole, then slowly exit the drilling rod be socketed with drill bit, wait for 20 ~ 30 minutes, arch supporting plate and spherical nut are installed in the one end of stretching out country rock at anchor pole, and screw spherical nut.
2. in breaking roof, bore bolthole and anchor rod anchored method as claimed in claim 1, it is characterized in that: it is long that every root drilling rod and connecting rod are 1.0m; The internal diameter of drilling rod and connecting rod is 28mm.
3. in breaking roof, bore bolthole and anchor rod anchored method as claimed in claim 1, it is characterized in that: described anchor pole is high-strength screw-thread steel anchor pole or hollow grouting anchor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310207314.4A CN103277122B (en) | 2013-05-30 | 2013-05-30 | Method for drilling anchor rod hole and anchoring anchor rod in broken roof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310207314.4A CN103277122B (en) | 2013-05-30 | 2013-05-30 | Method for drilling anchor rod hole and anchoring anchor rod in broken roof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103277122A CN103277122A (en) | 2013-09-04 |
| CN103277122B true CN103277122B (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310207314.4A Expired - Fee Related CN103277122B (en) | 2013-05-30 | 2013-05-30 | Method for drilling anchor rod hole and anchoring anchor rod in broken roof |
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| Country | Link |
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| CN (1) | CN103277122B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035394A (en) * | 2017-05-25 | 2017-08-11 | 中国矿业大学 | A kind of umbrella reed structure anchor pole anchor head assembly and its application method |
| CN107190743A (en) * | 2017-07-26 | 2017-09-22 | 山东省城乡建设勘察设计研究院 | A kind of composite rod automatic anchor pole and its construction method |
| CN108049900A (en) * | 2017-12-07 | 2018-05-18 | 中国矿业大学 | A kind of colliery bulky powder coal body armature boring construction method |
| CN107842384A (en) * | 2017-12-18 | 2018-03-27 | 中国矿业大学 | The synchronous anchor and brill anchor method of a kind of hollow screw anchor pole |
| CN111322097B (en) * | 2020-01-16 | 2022-06-17 | 湖北三鑫金铜股份有限公司 | Supporting method for coordinating deformation of surrounding rock of roadway |
| 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 |
| CN114086999A (en) * | 2021-12-03 | 2022-02-25 | 武钢资源集团金山店矿业有限公司 | Anchoring method of tube seam anchor rod |
| CN114810171B (en) * | 2022-03-30 | 2023-03-10 | 西南交通大学 | Anchor rod with expandable end |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1727633A (en) * | 2005-06-22 | 2006-02-01 | 叶迎新 | Drill pipe of the center emplacement type jumbolter and construction method |
| CN1888326A (en) * | 2006-07-26 | 2007-01-03 | 中冶沈勘工程技术有限公司 | Two-purpose boring bar and hole-protecting casing soil anchor bolt boring technology |
| CN101761350A (en) * | 2010-02-08 | 2010-06-30 | 河南理工大学 | Rapid drilling device of small-bore tunnel bottom plate drill |
| CN102943681A (en) * | 2012-11-21 | 2013-02-27 | 天地科技股份有限公司 | Method and device for supporting weak adhesion bond soft rock roadway |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6672806B2 (en) * | 2000-11-22 | 2004-01-06 | Forasol International Sa | Device for drilling and anchoring and process for placing grout anchors |
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2013
- 2013-05-30 CN CN201310207314.4A patent/CN103277122B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1727633A (en) * | 2005-06-22 | 2006-02-01 | 叶迎新 | Drill pipe of the center emplacement type jumbolter and construction method |
| CN1888326A (en) * | 2006-07-26 | 2007-01-03 | 中冶沈勘工程技术有限公司 | Two-purpose boring bar and hole-protecting casing soil anchor bolt boring technology |
| CN101761350A (en) * | 2010-02-08 | 2010-06-30 | 河南理工大学 | Rapid drilling device of small-bore tunnel bottom plate drill |
| CN102943681A (en) * | 2012-11-21 | 2013-02-27 | 天地科技股份有限公司 | Method and device for supporting weak adhesion bond soft rock roadway |
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| Publication number | Publication date |
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| CN103277122A (en) | 2013-09-04 |
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Effective date of registration: 20201225 Address after: 224400 Room 201, 2nd floor, 556 Macao Road, Funing County, Yancheng City, Jiangsu Province Patentee after: Funing longchuang Technology Service Co.,Ltd. Address before: 411201 Taoyuan Road, Yuhu District, Hunan, Xiangtan Patentee before: Hunan University of Science and Technology |
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Granted publication date: 20150415 |