CN102296974A - Rapid maintaining method for broken roof in stope - Google Patents
Rapid maintaining method for broken roof in stope Download PDFInfo
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- CN102296974A CN102296974A CN2011102047259A CN201110204725A CN102296974A CN 102296974 A CN102296974 A CN 102296974A CN 2011102047259 A CN2011102047259 A CN 2011102047259A CN 201110204725 A CN201110204725 A CN 201110204725A CN 102296974 A CN102296974 A CN 102296974A
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Abstract
The invention discloses a rapid maintaining method for a broken roof in a stope. The rapid maintaining method comprises the steps of: firstly, designing an anchoring rod drill hole for maintaining the broken roof in the stope; secondly, carrying out canopy guard by adopting a self-drilling anchoring rod in combination with a reinforcing steel bar belt; and during the canopy guard, carrying out anchoring rod depth detection on a pre-drilled drill hole by using a common anchoring rod drill, and then selecting the type of the anchoring rod according to the breaking range of the roof. The invention solves the problems of multiple constructions, high stress, and immediate, rapid and effective maintenance of the broken roof under the condition of large embedding depth.
Description
Technical field
The invention belongs to the mining technical field.
Background technology
The mining roof accident is one of mine serious disasters and accidents, along with mining depth increases, the application of big mining height production technique, the roof cracking phenomenon often appears in the recovery process, cause part or large tracts of land roof fall accident, not only influence is produced, and causes potential safety hazard.The common roof accident of China's coal-mine comprises the roof accident in installation of stope equipment and the progradation, three parts of the accident in roof accident in the driving face progradation and the road maintenance process.The control of such accident at present is basic identical with the conventional method of preventing and treating, and mainly takes artificial filling, temporary lining measure.Along with mining depth increases, the mining height mining machinesization applies greatly; these conventional measures are in specific implementation process; owing to exist operating difficulties, danger to be difficult to defectives such as control; cause equipment downtime long; treatment of roof collapse is untimely, often brings out secondary disaster, causes the vicious circle of Roof Control; and large-scale roof accident takes place easily, cause great loss.When stope existed the unusual region of high stress and complicated structure, roof collapse adopted present method to be difficult to achieve effective control, caused support material waste and manpower consumption.Therefore the breaking roof control under many structures, heavily stressed (when the stress of primary rock reaches 20Mp), big buried depth (greater than the 800 meters time) condition needs some technical methods fast and effectively of invention, invent a kind of to breaking roof in time, maintaining method is significant fast and effectively.
Summary of the invention
The objective of the invention is at the great deficiency that strick precaution is untimely, effect is not in place that present deep mining is constructed, the control of high stress areas breaking roof exists more, propose a kind of effective ways new, that have in time, fast breaking roof safeguarded.
Technical scheme of the present invention is:
The first step: the armature boring of design maintenance stope breaking roof
In the working face mining process, top board cranny development, breaking small range of scale, pressure occur and manifest expansion trend significantly during the zone, arrange 2 borings in every 1.4m scope, the spacing of wells is controlled at 0.9-1.0m, and pre-drilling depth is 1.0-3.mm;
Second step: automatic anchor pole cooperates the reinforcing bar band to protect the top
In preboring boring, carry out the anchor pole depth finding with the common bolt drilling tool earlier, creep into more at need, illustrate that boring enters complete rock stratum, is effective depth when drilling tool creeps into certain depth;
When the roof cracking range spans less than 100 meters, the degree of depth less than 15 meters, choose with effective depth and be complementary the self drilling anchor of length as support anchor rod, adopt Roofbolt drilling rig to cooperate self drilling anchor to creep into then, after reaching rock-bolt length, stop to creep into, the reinforcing bar band is routed on the top board, and the self drilling anchor end is exposed in the reinforcing bar band, install pallet in the anchor pole end, and fastening nut;
When the roof cracking range spans greater than 100 meters, the degree of depth greater than 15 meters, when particularly running into structure, choose with effective depth and be complementary the grouted anchor bar of brill certainly of length as support anchor rod, adopt Roofbolt drilling rig to cooperate then and creep into from boring grouted anchor bar, reach rock-bolt length after, stop to creep into, the reinforcing bar band is routed on the top board, and make from boring the grouted anchor bar end and in the reinforcing bar band, expose, install pallet in the anchor pole end, and fastening nut; Connect grouting pump by the slip casting linkage at last, from bore certainly grouted anchor bar hollow slip casting in breaking roof or fault zone, reinforce breaking roof.
Good effect of the present invention is: 1. by self drilling anchor is installed, and cooperate the reinforcing bar band of maintenance function in breaking roof, top board is played the active maintenance effect, effectively prevent the expansion in roof fall zone.2. by slip casting, reinforced breaking roof, improved roof strata intensity, to the fragmentation in stope deep, crack rock people for being solidified into complete rock stratum, for the propelling of work plane provides safety guarantee.3. the reinforcing bar band has sealing, bears, makes the pressure effect, and protective action is played at work plane roof of head face, back place, and the staff in this space is played protective action.
Description of drawings
Below in conjunction with description of drawings enforcement of the present invention.
Fig. 1 is a work plane breaking roof zone drill holes vertical view;
Fig. 2 is an anchor pole depth finding schematic diagram;
Fig. 3 is from boring the grouted anchor bar structure chart;
Fig. 4 is reinforcing bar band structure figure.
Among the figure: 1-drill bit, 2-linkage 2,3-mesopore drilling rod, 4-stop grouting plug, 5-backing plate, 6-nut, 7-grouting device.
The specific embodiment
The inventive method step is as follows:
The first step: the armature boring of design maintenance stope breaking roof
In the working face mining process, top board cranny development, breaking small range of scale, pressure occur and manifest expansion trend significantly during the zone, arrange 2 borings in every 1.4m scope, the spacing of wells is controlled at 0.9-1.0m, and pre-drilling depth is 1.0-3.mm.As shown in Figure 1.
Second step: automatic anchor pole cooperates the reinforcing bar band to protect the top
In preboring boring, carry out the anchor pole depth finding with the common bolt drilling tool earlier, creep into more at need, illustrate that boring enters complete rock stratum, be effective depth, see Fig. 2 when drilling tool creeps into certain depth.
When the roof cracking range spans less than 100 meters, the degree of depth during less than 15 meters, select for use and the be complementary automatic anchor pole of length of effective depth, automatic anchor pole is installed on the supporting drilling tool, after the bore position that designs creeps into, gets into the end, reserve tail end, then the reinforcing bar band is routed on the top board, and tail end is exposed in the reinforcing bar band, install pallet at tail end, and fastening nut, the structure of reinforcing bar band is seen Fig. 4.
When the roof cracking range spans greater than 100 meters, the degree of depth during greater than 15 meters, when particularly running into structure, choose with effective depth and be complementary the grouted anchor bar of brill certainly of length as support anchor rod, adopt Roofbolt drilling rig to cooperate then and creep into from boring grouted anchor bar, reach rock-bolt length after, stop to creep into, the reinforcing bar band is routed on the top board, and make from boring the grouted anchor bar end and in the reinforcing bar band, expose, install pallet in the anchor pole end, and fastening nut; Connect grouting pump by the slip casting linkage at last, from bore certainly grouted anchor bar hollow slip casting in breaking roof or fault zone, reinforce breaking roof.
As shown in Figure 3, bore the combined structural member that grouted anchor bar adopts length to cooperate certainly, form by drill bit 1, hollow drill pipe 3, linkage 2, stop grouting plug 4, backing plate 5 and nut 6; Hollow drill pipe is made of more piece, links together with linkage, chooses flexibly according to the roof cracking degree of depth; And is furnished with slip casting linkage 7.
Claims (1)
1. stope breaking roof Rapid Maintenance Method is characterized in that step is as follows:
The first step: the armature boring of design maintenance stope breaking roof
In the working face mining process, top board cranny development, breaking small range of scale, pressure occur and manifest expansion trend significantly during the zone, arrange 2 borings in every 1.4m scope, the spacing of wells is controlled at 0.9-1.0m, and pre-drilling depth is 1.0-3.mm;
Second step: automatic anchor pole cooperates the reinforcing bar band to protect the top
In preboring boring, carry out the anchor pole depth finding with the common bolt drilling tool earlier, creep into more at need, illustrate that boring enters complete rock stratum, is effective depth when drilling tool creeps into certain depth;
When the roof cracking range spans less than 100 meters, the degree of depth less than 15 meters, choose with effective depth and be complementary the self drilling anchor of length as support anchor rod, adopt Roofbolt drilling rig to cooperate self drilling anchor to creep into then, after reaching rock-bolt length, stop to creep into, the reinforcing bar band is routed on the top board, and the self drilling anchor end is exposed in the reinforcing bar band, install pallet in the anchor pole end, and fastening nut;
When the roof cracking range spans greater than 100 meters, the degree of depth greater than 15 meters, when particularly running into structure, choose with effective depth and be complementary the grouted anchor bar of brill certainly of length as support anchor rod, adopt Roofbolt drilling rig to cooperate then and creep into from boring grouted anchor bar, reach rock-bolt length after, stop to creep into, the reinforcing bar band is routed on the top board, and make from boring the grouted anchor bar end and in the reinforcing bar band, expose, install pallet in the anchor pole end, and fastening nut; Connect grouting pump by the slip casting linkage at last, from bore certainly grouted anchor bar hollow slip casting in breaking roof or fault zone, reinforce breaking roof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110204725 CN102296974B (en) | 2011-07-12 | 2011-07-12 | Rapid maintaining method for broken roof in stope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110204725 CN102296974B (en) | 2011-07-12 | 2011-07-12 | Rapid maintaining method for broken roof in stope |
Publications (2)
| Publication Number | Publication Date |
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| CN102296974A true CN102296974A (en) | 2011-12-28 |
| CN102296974B CN102296974B (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110204725 Expired - Fee Related CN102296974B (en) | 2011-07-12 | 2011-07-12 | Rapid maintaining method for broken roof in stope |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966359A (en) * | 2012-11-09 | 2013-03-13 | 山西潞安环保能源开发股份有限公司 | Working face ventilation oxidization zone roof control method |
| CN103758538A (en) * | 2014-01-26 | 2014-04-30 | 山东科技大学 | Cracked roof caving region grouting filling similar simulation method |
| CN104847354A (en) * | 2015-04-03 | 2015-08-19 | 山东科技大学 | Method for improving performance of strip coal pillar by grouting combined support anchor rod |
| CN112963618A (en) * | 2021-05-19 | 2021-06-15 | 中煤科工能源科技发展有限公司 | Method and device for long-distance laying and continuous filling of filling pipeline of side coal mining cave |
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| DE10234255A1 (en) * | 2002-06-27 | 2004-01-15 | Friedr. Ischebeck Gmbh | Use of drill injection anchors made from cold-rolled steel having longitudinal channels open in the region of the drill crown for rinsing and injecting cement as flat reinforcements for tunnel roofs |
| CN1982651A (en) * | 2005-12-14 | 2007-06-20 | 招金矿业股份有限公司大尹格庄金矿 | Method for mining ultra-long roofbolt slip casting with top plate large-area and long-time exposed under mining well |
| CN101694163A (en) * | 2009-10-14 | 2010-04-14 | 山东科技大学 | Determination method of deep tunnel roof support forms and support depth |
| CN101768965A (en) * | 2010-01-19 | 2010-07-07 | 广东省长大公路工程有限公司 | Process for casting by using self-advancing anchor rod |
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2011
- 2011-07-12 CN CN 201110204725 patent/CN102296974B/en not_active Expired - Fee Related
Patent Citations (4)
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| DE10234255A1 (en) * | 2002-06-27 | 2004-01-15 | Friedr. Ischebeck Gmbh | Use of drill injection anchors made from cold-rolled steel having longitudinal channels open in the region of the drill crown for rinsing and injecting cement as flat reinforcements for tunnel roofs |
| CN1982651A (en) * | 2005-12-14 | 2007-06-20 | 招金矿业股份有限公司大尹格庄金矿 | Method for mining ultra-long roofbolt slip casting with top plate large-area and long-time exposed under mining well |
| CN101694163A (en) * | 2009-10-14 | 2010-04-14 | 山东科技大学 | Determination method of deep tunnel roof support forms and support depth |
| CN101768965A (en) * | 2010-01-19 | 2010-07-07 | 广东省长大公路工程有限公司 | Process for casting by using self-advancing anchor rod |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966359A (en) * | 2012-11-09 | 2013-03-13 | 山西潞安环保能源开发股份有限公司 | Working face ventilation oxidization zone roof control method |
| CN103758538A (en) * | 2014-01-26 | 2014-04-30 | 山东科技大学 | Cracked roof caving region grouting filling similar simulation method |
| CN103758538B (en) * | 2014-01-26 | 2016-03-02 | 山东科技大学 | A kind of breaking roof Collapsed zone grouting filling analog simulation method |
| CN104847354A (en) * | 2015-04-03 | 2015-08-19 | 山东科技大学 | Method for improving performance of strip coal pillar by grouting combined support anchor rod |
| CN112963618A (en) * | 2021-05-19 | 2021-06-15 | 中煤科工能源科技发展有限公司 | Method and device for long-distance laying and continuous filling of filling pipeline of side coal mining cave |
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| Publication number | Publication date |
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| CN102296974B (en) | 2013-10-23 |
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