CN103983241A - Method for accurately measuring mining height of king-sized mining height fully mechanized face - Google Patents
Method for accurately measuring mining height of king-sized mining height fully mechanized face Download PDFInfo
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- CN103983241A CN103983241A CN201410226683.2A CN201410226683A CN103983241A CN 103983241 A CN103983241 A CN 103983241A CN 201410226683 A CN201410226683 A CN 201410226683A CN 103983241 A CN103983241 A CN 103983241A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C3/00—Measuring distances in line of sight; Optical rangefinders
- G01C3/10—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with variable angles and a base of fixed length in the observation station, e.g. in the instrument
- G01C3/20—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with variable angles and a base of fixed length in the observation station, e.g. in the instrument with adaptation to the measurement of the height of an object
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- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention provides a method for accurately measuring the mining height of a king-sized mining height fully mechanized face. A laser measurement instrument is arranged at an observation point required to be subjected to mining height measurement in a working space of a hydraulic support in an advancing direction of the fully mechanized face for measuring a vertical distance of the observation point and a bottom plate of the fully mechanized face, a horizontal distance of the observation point and a coal wall of the fully mechanized face and a connecting line distance of the observation point and an angular point of the top part of the coal wall of the fully mechanized face, and finally, the practical mining height of the current king-sized mining height fully mechanized face is calculated according to the vertical distance, the horizontal distance and the connecting line distance. The method for measuring the mining height is simple, convenient, rapid and time-saving, has high precision and has certain guiding significance on evaluating the recovery ratio of the working face and ensuring safety production of the working face.
Description
Technical field
The invention belongs to mining Technology Underground Coal Mine, relate in particular to a kind of super great mining height fully mechanized coal face mining height accurate measurement method.
Background technology
The mining height of the lower fully mechanized coal face of the western Shen Dong of China mining area high strength exploitation has reached 7.0m, is just developing now 8.5m full-seam mining support, and its fundamental purpose is: for longwall top coal caving, greatly improved resource recovery ratio, avoided the waste of state-owned resource.And down-hole fully mechanized coal face conventionally adopts the scale method that hangs in the time measuring mining height, the method hangs lines and scale below set cap, is converted and draws workplace mining height with the relative scale of bracket upright post base by scale.In working face extraction process, top board exist leading sink, and two column protected type bracket upright post presents certain heeling condition, the composition error that artificial reading brings is larger, can not reflect strictly according to the facts the actual mining height of fully mechanized coal face, for workplace volume analysis, recovery ratio evaluation bring adverse effect.Therefore, be necessary a kind of simple to operate, reliable mining height accurate measurement method of data of design, this efficiently utilizes state-owned resource, and production safety is brought positive directive function.
At present, working face planar survey mining height is mainly the method that hangs scale under fully-mechanized mining working surface hydraulic support back timber, and the shortcoming of the method is as follows:
(1) hang tape measure point and be positioned at hydraulic support post alive side, hydraulic support is lived has certain distance between post and rib, in advance of the face process, due to support lifting repeatedly, overlying strata pressure transmits, roof cracking leaks the factors such as cash, make the existing bending subsidence Liang ⊿ s (seeing Fig. 1) to a certain degree of top board of this measurement point top, because this deflection cannot be measured at present, be generally unknown quantity, must ignore this unknown quantity and hang in scale method, thereby cause measurement result less than actual mining height.
(2) while hanging scale, need technician to determine the correspondence position of scale label according to known mining height and hydraulic support parameter, and measure first the corresponding rib mining height in this place need technician in the time that workplace is not produced under rib with traditional tape measure or steel ruler measurement, due to the danger that fully-mechanized mining working exists wall caving, leaks cash, measurement is absolutely unsafe; And between rib and scraper conveyor, there are a large amount of float coal, when measurement, need to clean out, otherwise cannot find out coal cutting bottom position.Scale of every suspension will repeat once above-mentioned work, hang scale loaded down with trivial details time-consuming.
(3) due to fully-mechanized mining working limited space, coal mining operation is loaded down with trivial details, and flow of personnel is frequent, the frequent maintenance and repair of equipment, and the scale of suspension is easily disturbed; Use the artificial reading error of suspension scale larger, need to often calibrate.Hang scale and can only be fixed on a certain hydraulic support, measure mining height position dumb, if it is too many to hang special scale, calibration scale is loaded down with trivial details and time-consuming.
Summary of the invention
The object of the present invention is to provide a kind of super great mining height fully mechanized coal face mining height accurate measurement method, be intended to solve existing fully-mechanized mining working mining height and measure the problems such as dumb, error is large.
The present invention is achieved in that a kind of super great mining height fully mechanized coal face mining height accurate measurement method, comprises the following steps:
Along fully-mechanized mining working direction of propulsion, in hydraulic support working space, the observation station that need to measure mining height is arranged to laser surveying instrument;
Use laser surveying instrument to measure the vertical range of observation station and fully-mechanized mining working base plate, the horizontal range of observation station and fully-mechanized mining working rib, and the line distance of observation station and fully-mechanized mining working rib top angle point;
Calculate the actual mining height of current super great mining height fully mechanized coal face according to described vertical range, horizontal range and line distance.
Than the shortcoming and defect of prior art, the present invention has following beneficial effect:
(1) the present invention has avoided in traditional measurement method the relative error of bringing because of the leading absolute error of sinking to causing of top board and manual measurement, the mining height method measured is simple, precision is high, and appraisal face recovery ratio, the safety in production of safeguard work face are had to certain directive significance.
(2) the present invention adopts infrared laser to measure, and work, computing method are simple, without calibration, measures convenient saving time, and can ensure the accuracy of actual mining height measured value compared with the special scale method of the suspension more general with current rig-site utilization.
Brief description of the drawings
Fig. 1 is the sectional view of large mining and high comprehensive mining face along direction of propulsion; Wherein, 1.-top substantially; 2.-immediate roof; 3.-rib; 4. arbitrary measuring position in-working space; 5.-hydraulic support post alive; 6.-hydraulic support; 7.-erecting dense individual props spoil; 8.-float coal; 9.-base plate;
Fig. 2 is the flow chart of steps of super great mining height fully mechanized coal face mining height accurate measurement method of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
A kind of super great mining height fully mechanized coal face mining height accurate measurement method, as shown in Figure 2, comprises the following steps:
S1, along fully-mechanized mining working direction of propulsion, in hydraulic support working space, the observation station that need to measure mining height is arranged to laser surveying instrument;
In step S1, cross-section structure as shown in Figure 1.
S2, use laser surveying instrument are measured the vertical range of observation station and fully-mechanized mining working base plate, the horizontal range of observation station and fully-mechanized mining working rib, and the line distance of observation station and fully-mechanized mining working rib top angle point;
In step S2, more specifically, as shown in Figure 1, need to measure arbitrarily the observation position of mining height at fully mechanized coal face, use portable infrared laser to measure the distance h of observation station apart from base plate, replace Partial Height under the corresponding rib of observation station (because a large amount of float coal cannot directly be measured), measure the horizontal range a of observation station and rib, measure the distance b of observation station and rib top angle point.
S3, calculate the actual mining height of current super great mining height fully mechanized coal face according to described vertical range, horizontal range and line distance.
In step S3, if the mining height of super great mining height fully mechanized coal face is H, obtain according to geometric knowledge:
in actual application, can utilize the built-in calculation procedure of laser surveying instrument, the data operation to measurement is also obtained a result, thereby measures more accurate mining height.
In embodiments of the present invention, avoid in traditional measurement method the relative error of bringing because of the leading absolute error of sinking to causing of top board and manual measurement, the mining height method measured is simple, precision is high, and appraisal face recovery ratio, the safety in production of safeguard work face are had to certain directive significance.In addition, the present invention adopts infrared laser to measure, and work, computing method are simple, without calibration, measures convenient saving time, and can ensure the accuracy of actual mining height measured value compared with the special scale method of the suspension more general with current rig-site utilization.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (1)
1. a super great mining height fully mechanized coal face mining height accurate measurement method, is characterized in that comprising the following steps:
Along fully-mechanized mining working direction of propulsion, in hydraulic support working space, the observation station that need to measure mining height is arranged to laser surveying instrument;
Use laser surveying instrument to measure the vertical range of observation station and fully-mechanized mining working base plate, the horizontal range of observation station and fully-mechanized mining working rib, and the line distance of observation station and fully-mechanized mining working rib top angle point;
Calculate the actual mining height of current super great mining height fully mechanized coal face according to described vertical range, horizontal range and line distance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410226683.2A CN103983241B (en) | 2014-05-26 | 2014-05-26 | A kind of super great mining height fully mechanized coal face mining height accurate measurement method |
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| CN201410226683.2A CN103983241B (en) | 2014-05-26 | 2014-05-26 | A kind of super great mining height fully mechanized coal face mining height accurate measurement method |
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| CN103983241A true CN103983241A (en) | 2014-08-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113340245A (en) * | 2021-04-29 | 2021-09-03 | 中煤科工开采研究院有限公司 | Mining fully-mechanized excavating face excavation progress measuring system and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202032985U (en) * | 2011-05-08 | 2011-11-09 | 山西兰花科技创业股份有限公司 | Mining height monitoring device for underground full-mechanized mining faces |
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- 2014-05-26 CN CN201410226683.2A patent/CN103983241B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202032985U (en) * | 2011-05-08 | 2011-11-09 | 山西兰花科技创业股份有限公司 | Mining height monitoring device for underground full-mechanized mining faces |
Non-Patent Citations (2)
| Title |
|---|
| 杨超锋等: "大倾角工作面液压支架稳定性机理分析", 《煤炭科学技术》, vol. 41, no. 7, 31 July 2013 (2013-07-31) * |
| 赵国栋: "大采高长工作面矿压显现规律及支架适应性研究", 《煤炭工程》, no. 1, 31 January 2013 (2013-01-31) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113340245A (en) * | 2021-04-29 | 2021-09-03 | 中煤科工开采研究院有限公司 | Mining fully-mechanized excavating face excavation progress measuring system and method |
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| CN103983241B (en) | 2017-01-04 |
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