CN104763424A - Gob-side entry driving reasonable position determination method - Google Patents
Gob-side entry driving reasonable position determination method Download PDFInfo
- Publication number
- CN104763424A CN104763424A CN201510051235.8A CN201510051235A CN104763424A CN 104763424 A CN104763424 A CN 104763424A CN 201510051235 A CN201510051235 A CN 201510051235A CN 104763424 A CN104763424 A CN 104763424A
- Authority
- CN
- China
- Prior art keywords
- stress
- coal
- monitoring point
- gob
- goaf
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000003245 coal Substances 0.000 claims abstract description 43
- 238000012544 monitoring process Methods 0.000 claims abstract description 39
- 239000011435 rock Substances 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 claims description 6
- 230000003245 working effect Effects 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000005065 mining Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention discloses a gob-side entry driving reasonable position determination method. The method is characterized in that a pressure sensor is pre-buried in a coal wall in front of a coalface, after the coalface goes over a monitoring point and has a certain distance away from the monitoring point, the stope beside the monitoring point becomes a gob, a rock stratum covering the gob moves so that coal at the edges produces stress redistribution and produces plastic deformation and thus the coal fully contacts with the pressure sensor, the stress can be completely transmitted to the pressure sensor, the pressure sensor can monitor a stress distribution rule of coal at the edge of the gob after mining disturbance, a position and a range of a stress reduction zone are determined and an reasonable tunnel digging position is determined. Through the scientific determination method, the stress distribution of coal at the edge of the gob after mining disturbance is obtained and the reasonable gob-side entry driving position is further determined. The determination method solves the traditional method problems and provides an accurate basis for mining roadway arrangement.
Description
Technical field
The present invention relates to Coal Mining Technology field, when particularly relating to a kind of employing gob side entry driving technology, rationally dig method for determining position.
Background technology
Gob side entry driving refers to along edge, stope goaf, colliery digging laneway.By the impact of Overlying Strata In A Face motion, in edge, goaf coal body, there is stress relaxed area and stress concentratedarea.Roadway layout in stress relaxed area, be conducive to roadway maintenance, reduce deflection.The successful key of the method is how to determine reasonably to dig position.
Determine the position of gob side entry driving at present, mainly according to engineering analog method, theoretical calculation and Method for Numerical.Owing to being subject to the combined influence of the geologic(al) factors such as country rock initial stress, the intensity of country rock own, surrounding rock failure degree, seam mining thickness, stress in coal bed distribution in edge, goaf is extremely complicated, is difficult to determine the most reasonably to dig position by previous methods.
Determine that the position of gob side entry driving not yet realizes at present by on-the-spot coal and rock stress measurement, its reason is: (1) edge, goaf coal body pressurized produces certain plastic failure, get core and water shutoff is all very difficult, and broken coal intensity is not easily determined, cause the stress relief method of main flow and hydraulic fracturing all can not implement; (2) traditional detecting earth stress is very complicated, is not suitable for multimetering on a large scale; (3) edge, goaf stress in coal bed is measured, and just need can carry out, so can only be measured by superdeep holes, further increase measurement difficulty at coal-face away from rear.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of defining method of the gob side entry driving rational position based on in-situ stress measuring technique is provided, can be stope of coal mines roadway layout and basic foundation is provided.
For achieving the above object, the present invention adopts following technical scheme:
A defining method for gob side entry driving rational position, is characterized in that comprising the steps:
A, set up monitoring point and test macro: in coal-face front, close in the stope drift active workings of next stope and monitoring point is set; In monitoring point to rock mass Drilling level monitoring hole outside stope drift active workings, in monitoring holes, several pressure sensors are arranged at interval; The data call wire of pressure sensor is drawn from aperture, and access data collecting device and data processing equipment after extending a segment distance; Grouting filling monitoring holes, starts monitored data after it solidifies; The stress data Chuan Shu Give data acquisition equipment that pressure sensor will monitor, data acquisition equipment by the signal transmission collected to data processing equipment;
B, the stress in coal bed distribution of monitoring edge, goaf: along with coal-face is pushed ahead, cross after the certain distance of monitoring point until it, the stope on side, monitoring point becomes goaf; Under the impact of goaf movement, monitoring point coal body is stressed to gradually change, and coal body also can produce plastic strain simultaneously, thus the pressure that coal body is subject to is entirely delivered to pressure sensor; Treat that goaf has been caving, monitoring point place stress in coal bed tends towards stability gradually, and the result now recorded is edge, the goaf stress in coal bed after exploitation disturbance; The data that each pressure sensor comprehensive records, obtain edge, the goaf stress in coal bed distribution curve after exploiting disturbance;
C, determine the rational position of gob side entry driving: according to edge, the goaf stress in coal bed distribution curve after above-mentioned exploitation disturbance, analyze the scope of stress peak district, stress relaxed area, be wherein the rational position of gob side entry driving away from the stress relaxed area scope of rib.
General principle of the present invention is: at the pre-buried pressure sensor of coal-face front rib, cross after the certain distance of monitoring point until work plane, the stope on side, monitoring point becomes goaf, and due to goaf movement, its edge coal body produces stresses re-distribution.Stresses re-distribution can cause coal body generation plastic strain, thus coal body fully contacts with pressure sensor, stress suffered by it can be entirely delivered to pressure sensor, thus the stress distribution law of edge, goaf coal body after monitoring exploitation disturbance, and then determine rational tunnel initating position.
The invention has the beneficial effects as follows: record edge, the goaf stress in coal bed distribution after exploitation disturbance by scientific method, and then determine the rational position of gob side entry driving accurately, overcome the deficiency of conventional method, for layout of actual mining roadway provides accurate foundation.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and detailed description of the invention, the invention will be further described:
Fig. 1 is the schematic diagram of the determination embodiment of the method for gob side entry driving rational position of the present invention;
Fig. 2 is the distribution curve of stress typically exploiting edge, goaf coal body after disturbance.
Accompanying drawing explanation
By reference to the accompanying drawings 1, a kind of defining method of gob side entry driving rational position, is characterized in that comprising the steps:
A, set up monitoring point and test macro: in coal-face a front, close in the stope drift active workings b of next stope and monitoring point is set; In monitoring point to rock mass Drilling level monitoring hole outside stope drift active workings, in monitoring holes, several pressure sensors 1 are arranged at interval; The data call wire of pressure sensor is drawn from aperture, and access data collecting device 2 and data processing equipment 3 after extending a segment distance; Grouting filling monitoring holes, starts monitored data after it solidifies; The stress data Chuan Shu Give data acquisition equipment that pressure sensor will monitor, data acquisition equipment by the signal transmission collected to data processing equipment;
B, the stress in coal bed distribution of monitoring edge, goaf: along with coal-face is pushed ahead, cross after the certain distance of monitoring point until it, the stope on side, monitoring point becomes goaf; Under the impact of goaf movement, monitoring point coal body is stressed to gradually change, and coal body also can produce plastic strain simultaneously, thus the pressure that coal body is subject to is entirely delivered to pressure sensor; Treat that goaf has been caving, monitoring point place stress in coal bed tends towards stability gradually, and the result now recorded is edge, the goaf stress in coal bed after exploitation disturbance; The data that each pressure sensor comprehensive records, obtain edge, the goaf stress in coal bed distribution curve after exploiting disturbance, as shown in Figure 2;
C, determine the rational position of gob side entry driving: according to edge, the goaf stress in coal bed distribution curve after above-mentioned exploitation disturbance, analyze the scope of stress peak district, stress relaxed area, wherein away from the stress relaxed area scope (in Fig. 2 M region) of rib, be the rational position of gob side entry driving.
The above embodiment, the just one of the embodiment that the present invention is more preferably concrete, the usual change that those skilled in the art carries out within the scope of technical solution of the present invention and replacement all should be included in protection scope of the present invention.
Claims (1)
1. a defining method for gob side entry driving rational position, is characterized in that comprising the steps:
A, set up monitoring point and test macro: in coal-face front, close in the stope drift active workings of next stope and monitoring point is set; In monitoring point to rock mass Drilling level monitoring hole outside stope drift active workings, in monitoring holes, several pressure sensors are arranged at interval; The data call wire of pressure sensor is drawn from aperture, and access data collecting device and data processing equipment after extending a segment distance; Grouting filling monitoring holes, starts monitored data after it solidifies; The stress data Chuan Shu Give data acquisition equipment that pressure sensor will monitor, data acquisition equipment by the signal transmission collected to data processing equipment;
B, the stress in coal bed distribution of monitoring edge, goaf: along with coal-face is pushed ahead, cross after the certain distance of monitoring point until it, the stope on side, monitoring point becomes goaf; Under the impact of goaf movement, monitoring point coal body is stressed to gradually change, and coal body also can produce plastic strain simultaneously, thus the pressure that coal body is subject to is entirely delivered to pressure sensor; Treat that goaf has been caving, monitoring point place stress in coal bed tends towards stability gradually, and the result now recorded is edge, the goaf stress in coal bed after exploitation disturbance; The data that each pressure sensor comprehensive records, obtain edge, the goaf stress in coal bed distribution curve after exploiting disturbance;
C, determine the rational position of gob side entry driving: according to edge, the goaf stress in coal bed distribution curve after above-mentioned exploitation disturbance, analyze the scope of stress peak district, stress relaxed area, be wherein the rational position of gob side entry driving away from the stress relaxed area scope of rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510051235.8A CN104763424B (en) | 2015-02-01 | 2015-02-01 | Gob-side entry driving reasonable position determination method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510051235.8A CN104763424B (en) | 2015-02-01 | 2015-02-01 | Gob-side entry driving reasonable position determination method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104763424A true CN104763424A (en) | 2015-07-08 |
| CN104763424B CN104763424B (en) | 2017-01-25 |
Family
ID=53645478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510051235.8A Expired - Fee Related CN104763424B (en) | 2015-02-01 | 2015-02-01 | Gob-side entry driving reasonable position determination method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104763424B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758565A (en) * | 2016-03-03 | 2016-07-13 | 山东科技大学 | Coal roadway driving head-on stress measuring method and danger assessment method |
| CN108643909A (en) * | 2018-04-19 | 2018-10-12 | 山东科技大学 | A kind of working face extraction tunnel initating optimization of region method |
| CN111677553A (en) * | 2020-06-21 | 2020-09-18 | 鄂托克前旗长城三号矿业有限公司 | Method for determining reasonable top cutting position of deep gob-side entry retaining |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202914103U (en) * | 2012-11-14 | 2013-05-01 | 山东科技大学 | Overlying rock beam fault zone height and range monitoring system of coal mine stope |
| CN103293560A (en) * | 2013-05-17 | 2013-09-11 | 上海大屯能源股份有限公司 | Method for testing mining-induced three-dimensional stress field |
| CN103470261A (en) * | 2013-09-30 | 2013-12-25 | 山东科技大学 | Method for roadway driving along goaf under original roadway top plate of fully mechanized top coal caving goaf |
-
2015
- 2015-02-01 CN CN201510051235.8A patent/CN104763424B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202914103U (en) * | 2012-11-14 | 2013-05-01 | 山东科技大学 | Overlying rock beam fault zone height and range monitoring system of coal mine stope |
| CN103293560A (en) * | 2013-05-17 | 2013-09-11 | 上海大屯能源股份有限公司 | Method for testing mining-induced three-dimensional stress field |
| CN103470261A (en) * | 2013-09-30 | 2013-12-25 | 山东科技大学 | Method for roadway driving along goaf under original roadway top plate of fully mechanized top coal caving goaf |
Non-Patent Citations (2)
| Title |
|---|
| 李磊等: "综放沿空掘巷合理位置及控制技术", 《煤炭学报》 * |
| 涂敏等: "综放沿空掘巷位置的分析", 《淮南工业学院学报》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758565A (en) * | 2016-03-03 | 2016-07-13 | 山东科技大学 | Coal roadway driving head-on stress measuring method and danger assessment method |
| CN105758565B (en) * | 2016-03-03 | 2018-09-28 | 山东科技大学 | Coal roadway tunneling is met head on stress determination method and risk assessment method |
| CN108643909A (en) * | 2018-04-19 | 2018-10-12 | 山东科技大学 | A kind of working face extraction tunnel initating optimization of region method |
| CN108643909B (en) * | 2018-04-19 | 2019-11-26 | 山东科技大学 | A kind of working face extraction tunnel initating optimization of region method |
| CN111677553A (en) * | 2020-06-21 | 2020-09-18 | 鄂托克前旗长城三号矿业有限公司 | Method for determining reasonable top cutting position of deep gob-side entry retaining |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104763424B (en) | 2017-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103293560B (en) | A kind of method of testing adopting triple stress court | |
| CN104454010B (en) | A kind of deep-well tunnel tunneling construction dynamic comprehensive monitor and early warning system and method for early warning | |
| CN100555000C (en) | A kind of contactless rock pressure [in mine observation and evaluation method | |
| CN107165676B (en) | The Trinity monitoring method of CONTROL OF STRATA MOVEMENT | |
| CN103076119B (en) | Method for measuring floor heave main control stress of laneway | |
| CN109653800B (en) | Composite power disaster monitoring and early warning system and method for deep water-rich overburden thick coal seam mining | |
| Kuang et al. | The impact of key strata movement on ground pressure behaviour in the Datong coalfield | |
| CN101270666B (en) | Tunnel influence geological condition section-expanding horizontal drilling estimation and prediction method | |
| CN103528731B (en) | A kind of coal mine paste filling on-line monitoring system based on optical fiber grating sensing | |
| Kang et al. | Safe mining technology of undersea metal mine | |
| CN104481587A (en) | Large-mining depth and long-span fully-mechanized top-coal caving face roof sandstone fracture water detecting and preventing method | |
| Li et al. | Ground movements caused by deep underground mining in Guan-Zhuang iron mine, Luzhong, China | |
| CN105021662B (en) | Adopt workplace regimen real-time dynamic monitoring test unit and test method | |
| CN103148770A (en) | Monitoring method for mechanical deformation of mine filling body | |
| CN103591922B (en) | Short range seam mining upper Seam Floor Failure degree of depth radon gas detection method | |
| Yin et al. | In situ dynamic monitoring of stress revolution with time and space under coal seam floor during longwall mining | |
| CN103994846A (en) | Device and method for testing surrounding rock stress field distribution | |
| CN105759010A (en) | Mining influence tunnel dynamic monitoring and stability evaluation method | |
| CN104089595B (en) | Stope base object model ruptures determination of distance method in advance | |
| Cheng et al. | Experimental study on the deformation and failure mechanism of overburden rock during coal mining using a comprehensive intelligent sensing method | |
| CN111077583B (en) | Structure activation double-parameter monitoring system and monitoring method | |
| Liu et al. | Feasibility study on multi-seam upward mining of multi-layer soft–hard alternate complex roof | |
| CN104763424A (en) | Gob-side entry driving reasonable position determination method | |
| Wang et al. | Ground stress and its impact on the stability of the surrounding rock in the Lüliang mining area | |
| CN113958367A (en) | Underground mine soft rock roadway ground pressure safety early warning monitoring method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170125 Termination date: 20190201 |