CN103835755B - A kind of coal mine tunnel top board disaster monitoring method - Google Patents
A kind of coal mine tunnel top board disaster monitoring method Download PDFInfo
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- CN103835755B CN103835755B CN201410115254.8A CN201410115254A CN103835755B CN 103835755 B CN103835755 B CN 103835755B CN 201410115254 A CN201410115254 A CN 201410115254A CN 103835755 B CN103835755 B CN 103835755B
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Abstract
A kind of coal mine tunnel top board disaster monitoring method, before being monitored, first carry out improving stability of surrounding rocks in roadway evaluation, according to Assessment of Surrounding Rock Stability result, determine monitoring country rock danger type region, and then determine back weight disaster region, then only described back weight disaster region arrangement monitoring instrument is monitored.The coal mine tunnel top board disaster monitoring method that the present invention provides, due to being monitored just for back weight disaster region, therefore can greatly be saved the input of the human and material resources to monitoring for the coal mining enterprise and financial resources, reduce production cost.
Description
Technical field
The present invention relates to a kind of coal mine tunnel top board disaster monitoring method.
Background technology
According to statistics, 2013, there are all kinds of accident 604, dead 1067 people, wherein roof accident 274 in national colliery altogether
Rise, dead 325 people, account for sum 45.3% and 30.4%, occupy first of all kinds of Coal Mine Disasters, therefore, top board disaster prevent and treat work
It is still coal mining enterprise and the emphasis of related scientific research institutes.
Coal mine roadway spreads all over extensively, and use time is long, is the region of top board disaster concentration.Although in recent years in roadway support
In the case that technology constantly obtains lifting, improving stability of surrounding rocks in roadway be improved significantly, and then strong reduce back
The generation of disaster.But going deep into coal mining, coal mining depth continues to increase, according to statistics, and 2013, national mining depth
The mine more than 1000m for the degree has all reached 36, and this numeral will constantly refresh.Because mining depth constantly increases
Greatly, roadway surrounding rock crustal stress significantly increases, and geological structure becomes increasingly complex, and roadway support difficulty significantly improves, back calamity
Evil probability of happening is increased dramatically.
Last decade comes, and for preventing the generation of back disaster, coal mining enterprise and scientific research institutions pass through cooperation to tunnel
Country rock and top, base plate have carried out large-scale monitoring.Such monitoring serves certain effect to top board disaster prevention, but due to
Only considered coal mine roadway country rock and top, the diversity of base plate attribute, lead to back calamity without this diversity of consideration
Evil is not random, on a large scale monitoring huge, the production cost that allows coal mining enterprise to expend on human and material resources and financial resources
Sharply increase；Meanwhile, such monitoring due to index single, to disaster feature itself reflection limited, therefore although cost is huge
Greatly, monitoring range is very big, but limited to having an effect of prevention top board disaster.
At present, also there is no the coal mine tunnel top board disaster monitoring method that a set of low cost, effect are good.
Content of the invention
Although, coal mine roadway complex geologic conditions, mining depth leads to greatly back disaster to occur frequently, generation area
Extensively, but nonetheless, top board disaster is not without rule and can follow.According to the top board disaster extent of injury, tunnel is permissible
It is divided into no disaster, light disaster and weight disaster region.The generation of top board disaster and improving stability of surrounding rocks in roadway have direct relation.Root
According to the top board disaster extent of injury, improving stability of surrounding rocks in roadway is evaluated, country rock can be divided into not dangerous type, relatively hazardous type and
Dangerous type.If a certain region top board disaster occurs frequently, and endanger serious, then this region should belong to weight disaster region, this area
The roadway surrounding rock in domain typically belongs to dangerous type.Therefore, for preventing the generation of top board disaster, it is important that monitoring roadway surrounding rock danger type
Region, take into account the region of the relatively hazardous type of country rock, and can not go to monitor the region that country rock belongs to not dangerous type.
Consequently, it is possible to be the generation of prevention top board disaster, do not need to go on a large scale to be monitored, and completely can be first
Improving stability of surrounding rocks in roadway is evaluated, determines surrounding rock stability situation, be then directed to dangerous type country rock region and be monitored and be
Can.
The technical solution used in the present invention is as follows：
A kind of coal mine tunnel top board disaster monitoring method, before being monitored, first carries out improving stability of surrounding rocks in roadway evaluation,
According to Assessment of Surrounding Rock Stability result, determine monitoring country rock danger type region, and then determine back weight disaster region, then
Only described back weight disaster region arrangement monitoring instrument is monitored, described improving stability of surrounding rocks in roadway evaluation includes as follows
Step：
(1) according to coal mine roadway geological condition, tunnel is divided into the region of 30～150m, in each institute zoning
Interior, select a drift section as improving stability of surrounding rocks in roadway evaluation point；
(2) observed and recorded is carried out to wall-rock crack developmental state by inspection instrument for borehole, obtain more than 2mm crack 60% with
Upper Growth Depth Lc/ m value；
(3) calculated by on-site land survey and record drift section area relative decrease situation, top board water drenching situation, dirt band feelings
Condition and tomography situation, respectively obtain drift section area relative decrease amount Δ SA/ %/d, top board water drenching amount w mm/d, dirt band is total
Thickness Pt/ m and fault throw value FtTetra- values of/m；
(4) detect and record the working resistance of anchor pole and anchor cable by anchor pole detection without damage instrument, be calculated anchor pole and anchor
Rope working resistance is with respect to the ratio R of Tensile strengthf/ % value；
(5) described evaluation point surrounding rock stability type and affiliated is determined according to the Assessment of Surrounding Rock Stability criterion that table 1 provides
Region back Disasters Type.
Table 1 Assessment of Surrounding Rock Stability criterion
After determining described back weight disaster region, determine selection in described back weight disaster region described
1～3 monitoring drift section arrangement monitoring instrument is monitored.
In above-mentioned coal mine tunnel top board disaster monitoring method, described monitoring instrument includes the first displacement transducer, the first anchor
Bar ergometer, second displacement sensor, the second anchor ergometer, described first level sensor, the first anchor ergometer and described
Second displacement sensor, the second anchor ergometer are arranged in two helping of described monitoring drift section.
In above-mentioned coal mine tunnel top board disaster monitoring method, described monitoring instrument also includes roofbolt ergometer, top board
Sinking displacement sensor and top board anchor dynamometer, described roofbolt ergometer, crush displacement transducer and top board anchor
Rope ergometer is arranged in the top board of described monitoring drift section.
Above-mentioned coal mine tunnel top board disaster monitoring method passes through wifi Wireless Ad Hoc Networks to described monitoring drift section
Carry out real-time monitoring.
The technique scheme of the present invention has advantages below compared to existing technology：
1. " present invention provide coal mine tunnel top board disaster monitoring method, due to arrangement monitoring instrument before, Xian Dui lane
Road surrounding rock stability has carried out scientific evaluation, allows to confirm back weight disaster region, therefore, in arrangement monitoring instrument
When, can be arranged just for back weight disaster region, thus greatly having saved coal mining enterprise in terms of monitoring
Human and material resources and the input of financial resources, greatly reduce coal mining enterprise's production cost.
2. " the coal mine tunnel top board disaster monitoring method that the present invention provides, due to just for back weight disaster region
It is monitored, therefore, when coal mining enterprise is monitored, multiple monitoring instruments can be arranged for monitoring drift section, by many
Individual monitoring index is monitored to roof condition, and therefore, the monitoring effect of the present invention is more preferable.
3. " the coal mine tunnel top board disaster monitoring method that the present invention provides, carries out reality by wifi Wireless Ad Hoc Networks
When monitoring, any node breaks down, and does not all interfere with the data transfer of whole monitoring system, therefore, the present invention monitoring more may be used
Lean on, more stable.
Brief description
In order that present disclosure is more likely to be clearly understood, specific embodiment below according to the present invention simultaneously combines
Accompanying drawing, the present invention is further detailed explanation, wherein
Fig. 1 is the signal that in coal mine tunnel top board disaster monitoring method of the present invention, monitoring instrument is arranged in monitoring drift section
Figure.
In figure reference is expressed as：1- monitoring drift section, 2- first displacement transducer, 3- first anchor ergometer,
4- second displacement sensor, 5- second anchor ergometer, 6- roofbolt ergometer, 7- crushes displacement transducer, and 8- pushes up
Plate anchor dynamometer.
Specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Described coal mine tunnel top board disaster monitoring method, before being monitored, first carries out improving stability of surrounding rocks in roadway evaluation,
According to Assessment of Surrounding Rock Stability result, determine monitoring country rock danger type region, and then determine back weight disaster region, then
Only described back weight disaster region arrangement monitoring instrument is monitored, described improving stability of surrounding rocks in roadway evaluation includes as follows
Step：
(1) according to coal mine roadway geological condition, tunnel is divided the region of 50m, in each institute zoning, select
One drift section is as improving stability of surrounding rocks in roadway evaluation point；
(2) observed and recorded is carried out to wall-rock crack developmental state by inspection instrument for borehole, obtain more than 2mm crack 60% with
Upper Growth Depth Lc/ m value；
(3) calculated by on-site land survey and record drift section area relative decrease situation, top board water drenching situation, dirt band feelings
Condition and tomography situation, respectively obtain drift section area relative decrease amount Δ SA/ %/d, top board water drenching amount w mm/d, dirt band is total
Thickness Pt/ m and fault throw value FtTetra- values of/m；
(4) detect and record the working resistance of anchor pole and anchor cable by anchor pole detection without damage instrument, be calculated anchor pole and anchor
Rope working resistance is with respect to the ratio R of Tensile strengthf/ % value；
(5) described evaluation point surrounding rock stability type and affiliated area back calamity are determined according to the criterion that table 1 provides
Evil type.
In the present embodiment, in described 2 monitoring drift section 1 arrangement monitoring instruments of back weight disaster regional choice
It is monitored.
In the present embodiment, described monitoring instrument includes the first displacement transducer 2, the first anchor ergometer 3, second displacement
Sensor 4, the second anchor ergometer 5, described first level sensor 2, the first anchor ergometer 3 and described second displacement sensor
4th, the second anchor ergometer 5 is arranged in the two of described monitoring drift section 1 and helps.
In the present embodiment, described monitoring instrument also includes roofbolt ergometer 6, crush displacement transducer 7 and
Top board anchor dynamometer 8, described roofbolt ergometer 6, crushes displacement transducer 7 and top board anchor dynamometer is arranged in
The top board of described monitoring drift section 1.
In the present embodiment, by wifi Wireless Ad Hoc Networks, real-time monitoring is carried out to described monitoring drift section 1.
In other embodiments, according to coal mine roadway geological condition, it is steady that region that tunnel is divided into 100m carries out country rock
Qualitative evaluation.
In other embodiments, in described 3 monitoring drift section 1 arrangement monitors of back weight disaster regional choice
Device is monitored.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.Right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need to be exhaustive to all of embodiment.And the obvious change thus extended out or
Change among still in the protection domain of the invention.
Claims (5)
1. a kind of coal mine tunnel top board disaster monitoring method it is characterised in that：Before being monitored, first carry out roadway surrounding rock steady
Qualitative evaluation, according to Assessment of Surrounding Rock Stability result, determines monitoring country rock danger type region, and then determines back weight disaster
Region, is then only monitored to described back weight disaster region arrangement monitoring instrument, described improving stability of surrounding rocks in roadway is commented
Valency comprises the steps：
(1) according to coal mine roadway geological condition, tunnel is divided into the region of 30～150m, in each institute zoning,
Select a drift section as improving stability of surrounding rocks in roadway evaluation point；
(2) observed and recorded is carried out to wall-rock crack developmental state by inspection instrument for borehole, obtain more than 2mm crack more than 60% and send out
Educate depth LC/ m value；
(3) calculate and record drift section area relative decrease situation by on-site land survey, top board water drenching situation, dirt band situation and
Tomography situation, respectively obtains drift section area relative decrease amount Δ SA/ %/d, top board water drenching amount w mm/d, dirt band gross thickness
Pt/ m and fault throw value FtTetra- values of/m；
(4) detect and record the working resistance of anchor pole and anchor cable by anchor pole detection without damage instrument, be calculated anchor pole and anchor cable work
Make the ratio R that resistance is with respect to Tensile strengthf/ % value；
(5) criterion according to listed by upper table determines described evaluation point surrounding rock stability type and affiliated area back disaster class
Type.
2. coal mine tunnel top board disaster monitoring method according to claim 1 it is characterised in that：In described back weight
1～3 monitoring drift section (1) arrangement monitoring instrument of disaster regional choice is monitored.
3. coal mine tunnel top board disaster monitoring method according to claim 2 it is characterised in that：Described monitoring instrument includes
First displacement transducer (2), the first anchor ergometer (3), second displacement sensor (4), the second anchor ergometer (5), described
First displacement transducer (2), the first anchor ergometer (3) and described second displacement sensor (4), the second anchor ergometer (5)
Be arranged in described monitoring drift section (1) two help.
4. coal mine tunnel top board disaster monitoring method according to claim 3 it is characterised in that：Described monitoring instrument is also wrapped
Include roofbolt ergometer (6), the displacement transducer that crushes (7) and top board anchor dynamometer (8), described roofbolt dynamometry
Meter (6), the displacement transducer that crushes (7) and top board anchor dynamometer are arranged in the top board of described monitoring drift section (1).
5. coal mine tunnel top board disaster monitoring method according to claim 2 it is characterised in that：By wifi wirelessly from group
Network technology carries out real-time monitoring to described monitoring drift section (1).
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| CN201410115254.8A CN103835755B (en) | 2014-03-26 | 2014-03-26 | A kind of coal mine tunnel top board disaster monitoring method |
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| CN201410115254.8A CN103835755B (en) | 2014-03-26 | 2014-03-26 | A kind of coal mine tunnel top board disaster monitoring method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104963725B (en) * | 2015-07-06 | 2017-06-30 | 中国矿业大学 | A kind of strata displacement regular non-destructive monitoring method |
| CN107146226B (en) * | 2017-05-05 | 2019-09-27 | 自然资源部四川测绘产品质量监督检验站(四川省测绘产品质量监督检验站) | The facial cleft gap inspection method and device shunk based on independent face |
| CN109915189A (en) * | 2019-04-09 | 2019-06-21 | 湖南科技大学 | The superficial karst collapse control method of activation monitoring is adopted based on tomography |
| CN113605925A (en) * | 2021-06-25 | 2021-11-05 | 安徽理工大学 | Coal mine large-section open-off-cut one-time roadway forming method |
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| CN201236722Y (en) * | 2008-08-05 | 2009-05-13 | 山东省尤洛卡自动化装备股份有限公司 | Dynamic monitoring system of coal mine roof plate |
| CN201696091U (en) * | 2010-03-05 | 2011-01-05 | 山东科大中天电子有限公司 | Mine ground pressure displacement monitoring system |
| CN103233777B (en) * | 2013-05-17 | 2015-09-02 | 上海大屯能源股份有限公司 | A kind of roof safety ore pressure monitor method and device |
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