CN115234303A - Method and device for predicting rock burst danger by fixed-force drill cuttings - Google Patents
Method and device for predicting rock burst danger by fixed-force drill cuttings Download PDFInfo
- Publication number
- CN115234303A CN115234303A CN202210904307.9A CN202210904307A CN115234303A CN 115234303 A CN115234303 A CN 115234303A CN 202210904307 A CN202210904307 A CN 202210904307A CN 115234303 A CN115234303 A CN 115234303A
- Authority
- CN
- China
- Prior art keywords
- drilling
- drill
- rotating speed
- rock burst
- force
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 68
- 239000011435 rock Substances 0.000 title claims abstract description 36
- 238000005520 cutting process Methods 0.000 title claims abstract description 25
- 238000005553 drilling Methods 0.000 claims abstract description 140
- 230000008569 process Effects 0.000 claims abstract description 42
- 239000003245 coal Substances 0.000 claims abstract description 37
- 239000002817 coal dust Substances 0.000 claims abstract description 18
- 238000012544 monitoring process Methods 0.000 claims description 33
- 230000008859 change Effects 0.000 claims description 13
- 238000009412 basement excavation Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000005303 weighing Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract 1
- 230000005641 tunneling Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B45/00—Measuring the drilling time or rate of penetration
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/04—Measuring depth or liquid level
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geophysics (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a rock burst danger early warning technology, in particular to a method and a device for predicting rock burst danger by fixed-force drill cuttings. The method for predicting rock burst danger does not need to test the amount of coal dust discharged per meter in the drilling process of drilling cutting holes, and is also suitable for high and weak coal seams containing water layers. Meanwhile, by testing the rotating speed of the drilling machine in the drilling process, the pulverized coal quantity does not need to be tested, and prediction errors caused by weighing errors of the pulverized coal quantity and subjective experience differences of workers are correspondingly avoided.
Description
Technical Field
The invention belongs to the technical field of rock burst danger early warning, and particularly relates to a method and a device for predicting rock burst danger by using fixed-force drill cuttings.
Background
When chip holes are drilled in coal bodies on two sides of a mine roadway, the quantity of drilled coal dust and the stress state of the coal bodies have a quantitative relation, and when the stress states are different, the quantity of drilled coal dust is also different. The drilling cutting method is a method for predicting rock burst danger by drilling a hole with the diameter of 42-50 mm into a coal body by utilizing the principle, and judging the stress concentration degree, the peak value size and the position of the coal body according to the quantity of coal dust discharged per unit hole depth in the drilling process, the change rule of the quantity of the coal dust and the power phenomenon generated by the coal dust. When the drilling cutting quantity of unit length is increased or exceeds a critical value, or dynamic phenomena such as top drilling, drill sticking, suction drilling, in-hole sound and the like occur in the drilling process, the stress concentration degree is increased, and the danger of rock burst is increased. The method can simultaneously detect a plurality of factors related to rock burst, is simple, convenient and easy to operate, and is a rock burst monitoring method commonly adopted by rock burst mines in China.
(1) For coal seams with high water content, due to the existence of water, the amount of coal dust drilled into each meter of drilled hole is difficult to obtain in the construction process, and the method is invalid.
(2) In the drilling construction process, the coal powder amount of each meter of drilled hole obtained by weighing has a large difference with the coal powder amount actually discharged from the position, so that the prediction error is large.
(3) And (3) predicting the coal dust amount by using the coal dust amount, wherein the coal dust amount in a normal stress area needs to be measured, and predicting the rock burst danger by using the ratio of the actual coal dust amount to the normal coal dust amount. The normal amount of pulverized coal has a great relationship with the manually selected drilling location, and the subjective experience of workers has a great influence on the actual test result.
Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
Disclosure of Invention
The present invention is to overcome the above-mentioned shortcomings in the prior art, and to provide a method and a device for predicting rock burst risk by using drill cuttings with constant force.
In order to achieve the above purpose, the invention provides the following technical scheme:
a method for predicting rock burst danger by fixed-force drill cuttings is characterized by always keeping a drilling machine drilling with constant propelling force in the drilling process, monitoring the rotating speed of the drilling machine in real time, and judging whether a monitoring area has impact danger or not according to the rotating speed ratio and the power display condition in the drilling process.
Preferably, during the drilling process, the motor rotating speed is monitored in real time through the monitoring system, and a curve graph of the rotating speed of the drilling machine changing along with the drilling depth is drawn in real time according to the drilling depth and the motor rotating speed.
Preferably, in a normal stress area, taking the average value of a plurality of point positions of a curve graph of the rotating speed of the drilling machine along with the change of the drilling depth as the basic rotating speed;
in the monitoring area, recording the motor rotating speed of the drilling machine in the drilling process as a monitoring rotating speed in real time;
and taking the value obtained by monitoring the rotating speed by the basic rotating speed ratio as the rotating speed ratio.
Preferably, the drawing of the graph of the change of the rotating speed of the drilling machine along with the drilling depth is carried out on not less than five drill holes constructed in the normal stress area.
Preferably, drilling holes in the stress redistribution and stress peak area, wherein the drilling holes are vertical to the coal wall or parallel to the coal bed, and the maximum depth is 3-4 times of the roadway height;
on two sides of the roadway, the height of a drilling hole from the ground is 0.5-1.5 m, the distance between adjacent drilling holes is 10-30 m, the distance between a stoping roadway drilling hole and a working face is not less than 100m, and a driving roadway drilling hole is arranged at the position 60m behind the driving working face;
preferably, the height of the drill hole from the ground is 0.5-1.5 m and the distance between adjacent drill holes is 10-50 m on the coal wall of the stope face.
Preferably, the height of the drill hole from the ground is 0.5-1.5 m in the driving face, and each 10m 2 ～20m 2 A bore is arranged.
Preferably, when the phenomena of drill jamming, drill suction, top drilling, abnormal sound and in-hole impact occur in the construction process, the power is judged to be displayed, and the area has impact danger.
Preferably, a critical value of the early warning index is determined according to the coal dust actually discharged in the drilling process and the dynamic phenomenon thereof, and the region is judged to have the impact danger after the rotating speed ratio exceeds the critical value.
An apparatus for predicting rock burst risk by fixed force drill cuttings, comprising:
the drilling machine is provided with an operation platform, and the drilling machine is controlled to drill with constant propelling force through the operation platform;
a monitoring system disposed on the drill rig to monitor the drill rig in real time;
and in the drilling process, the rotating speed of the drilling machine is monitored in real time, and whether the monitoring area has impact danger or not is judged according to the rotating speed ratio and the power display condition in the drilling process.
Has the advantages that: the method for predicting the rock burst danger does not need to test the amount of coal dust discharged per meter in the drilling process of the drill cutting hole, and is also suitable for high and weak coal beds containing water layers. Meanwhile, by testing the rotating speed of the drilling machine in the drilling process, the pulverized coal quantity does not need to be tested, and prediction errors caused by weighing errors of the pulverized coal quantity and subjective experience differences of workers are correspondingly avoided.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and not to limit the invention. Wherein:
FIG. 1 is a schematic illustration of a drill carriage according to an embodiment of the present invention;
FIG. 2 is a graph illustrating the variation of the drill speed while drilling depth according to an embodiment of the present invention;
FIG. 3 is a schematic overall view of a stope face drilling arrangement in an embodiment provided by the present invention;
FIG. 4 is an overall schematic view of a driving face drilling arrangement in an embodiment of the present invention;
FIG. 5 is a layout diagram of the two sides of the coal wall drilling holes of the roadway according to the embodiment of the invention;
FIG. 6 is a coal wall drilling layout of a stope face according to an embodiment of the present invention
Fig. 7 is a coal wall drilling layout diagram of a heading face in an embodiment of the invention.
In the figure: 1. a drill carriage; 2. an operation table; 3. a monitoring system; 4. a drilling machine; 5. a thrust curve during drilling under the action of homogeneous ground stress; 6. a thrust curve during drilling at the stress concentration zone; 7. stress curves at the stress concentration zones; 8. sectional coal pillars; 9. a gob; 10. solid coal; 11. stoping the working face; 12. tunneling a working face; 13. two coal walls of the roadway; 14. a roadway roof; 15. a roadway floor; 16. stope face coal wall; 17. a stope floor; 18. stope face roof; 19. tunneling a coal wall of a working face; 20. tunneling a working face top plate; 21. and (4) tunneling a working face bottom plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, which are merely for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected" and "connected" used herein should be interpreted broadly, and may include, for example, a fixed connection or a detachable connection; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
As shown in figures 1-7, a method for predicting rock burst danger by fixed-force drill cuttings is characterized in that a drilling machine 4 is used for drilling, the drilling machine 4 is controlled in the drilling process to ensure that the drilling machine 4 always keeps constant propelling force for drilling, the rotating speed of the drilling machine 4 is monitored in real time, and whether a monitoring area has the rock burst danger or not is judged according to the rotating speed ratio and the power display condition in the drilling process. Meanwhile, by testing the rotating speed of the drilling machine 4 in the drilling process, the pulverized coal quantity does not need to be tested, and the prediction error caused by the weighing error of the pulverized coal quantity and the subjective experience difference of workers is correspondingly avoided. In this embodiment, the drilling machine 4 can keep the propelling force constant during the operation by the control of the operation device, specifically, the drilling machine 4 can be driven by a hydraulic cylinder or an air rod, and the hydraulic cylinder or the air rod is provided with constant pressure by a pressure pump, so that constant force driving is ensured, the drilling machine 4 can realize real-time monitoring of the rotating speed and data transmission during the operation, and during actual drilling, the rotating speed of the drilling machine 4 is kept constant during the drilling process under the action of homogeneous stress. Influenced by the stress concentration area, the rock stratum under the stress concentration area has higher ground stress, and the integral hardness is strengthened. When the drill rod drills into a region with higher hardness, the rotating speed can show a corresponding increase phenomenon because the propelling force of the motor is not changed. Specifically, the motor speed increases in a linear fashion as the formation hardness increases. The method for predicting the rock burst danger does not need to test the amount of coal dust discharged per meter in the drilling process of the drill cutting hole, and is also suitable for high and weak coal beds containing water layers.
In an optional embodiment, the drilling machine can realize the control of the rotating speed and the advancing speed of three gears of slow, medium and fast, and the rotating speed and the advancing speed respectively correspond to soft, medium and hard coal seams of roadway surrounding rock. Before drilling, prospecting is carried out on geology in advance, and the coal seam that drills is judged to belong to which kind of "soft", "medium" or "hard" coal seam to 4 gears of rig are adjusted.
In an optional embodiment, during the drilling process, the monitoring system 3 is used for monitoring the rotating speed of the motor in real time, and a curve graph of the rotating speed variation while drilling of the drilling machine 4 is drawn in real time according to the drilling depth and the rotating speed of the motor, wherein the monitoring system 3 comprises: the detection element monitors along with the rotating speed of the motor; the detection element can be specifically a hall sensor or an encoder; the processor is used for drawing a curve graph of the change of the rotating speed of the drilling machine 4 along with the drilling depth in real time according to the depth of the drill rod and the rotating speed of the motor; and the display screen is used for displaying a curve chart of the change of the rotating speed of the drilling machine 4 while drilling.
In the embodiment, in the normal stress area, the average value of multiple point positions of the graph of the change of the rotating speed of the drilling machine 4 along with the drilling depth is taken as the basic rotating speed;
and in a monitoring area, recording the motor rotating speed of the drilling machine in the drilling process in real time as a monitoring rotating speed, wherein the monitoring area is an area needing to predict impact dangerous ground pressure, and taking a numerical value obtained by monitoring the rotating speed by using the basic rotating speed ratio as the rotating speed ratio.
Specifically, in the normal stress area, the x axis of the drawn graph is the drill rod depth, and the y axis is the motor rotating speed.
In the monitoring area, the x axis of the drawn graph is the depth of the drill rod, and the y axis is the rotation speed ratio.
The rotating speed ratio calculating method comprises the following steps:
in the normal stress area, obtaining the curve of the rotating speed of the drilling machine changing along with the drilling depth in the drilling process, taking the average value of all the parts as the basic rotating speed, and recording as V 0i 。
Recording the curve of the change of the rotating speed of the drilling machine 4 while drilling depth in the drilling process of the monitoring area as V 1i 。
Calculating the rotation speed ratio of the drilling machine in the measured area
In an alternative embodiment, in the normal stress area, the curve chart of the change of the rotating speed of the drilling machine along with the drilling depth is drawn corresponding to not less than five drill holes constructed in the normal stress area, so that the average value is obtained, and the precision of the rotating speed ratio is accurately obtained.
In an alternative embodiment, to ensure the prediction accuracy to the maximum extent, the data is selected according to the following principles: and drilling at the maximum stress value, specifically, stress redistribution and a stress peak value area are generated in the roadway excavation and working face stoping processes, and the drilling judgment result in the stress peak value area is more reliable. The hole distribution density and the hole distribution distance are determined according to the situation of a field working face, the rock strength can be damaged when the holes are too dense, and the discrimination accuracy can be easily reduced when the holes are too comb. Preferably, the boreholes are arranged perpendicular to the coal wall or parallel to the coal seam and have a maximum depth of 3 to 4 times the roadway height, and further, the maximum depth is typically no more than 15m.
On two sides of the roadway, the height of a drilling hole from the ground is 0.5-1.5 m, the distance between adjacent drilling holes is 10-30 m, the distance between a stoping roadway drilling hole and a working face is not less than 100m, and a driving roadway drilling hole is arranged at the position 60m behind the driving working face; referring to FIGS. 3-5, the stoping roadway should be drilled ahead of the working face by a distance L 1 Not less than 100m, and the excavation roadway drilling holes are arranged at the position 60m behind the excavation working face (L) 2 ) The height between two drilling holes on two sides of the roadway and the ground is 0.5-1.5 m, and the distance D between adjacent drilling holes 1 10-30 m, and further, the drilling arrangement modes of the tunneling roadway and the stoping roadway are the same.
On the coal wall of the stope face, the height of the drill hole from the ground is 0.5-1.5 m, and the distance between adjacent drill holes is 10-50 m. As shown in FIG. 6, the height of the drill hole on the coal wall of the stope face from the ground is 0.5-1.5 m, and the distance D between adjacent drill holes 2 Is 10-50 m.
On the driving face, the height of the drill hole from the ground is 0.5-1.5 m, and each 10m 2 ～20m 2 A bore is arranged. As shown in figure 7, the height of the drilling hole of the driving working face from the ground is 0.5-1.5 m, and each 10m 2 ～20m 2 A bore is arranged.
In an optional embodiment, the rotating speed and the rotating speed ratio change in the drilling process are monitored in real time, and whether the area has the impact risk or not is judged according to the obtained rotating speed ratio and the power display condition in the drilling process based on the maximum rotating speed ratio in one drilling process. And if the phenomena of drill jamming, drill suction, drill jacking, abnormal sound and in-hole impact occur in the construction process, the power is judged to be displayed, and the area has impact danger.
In an alternative embodiment, a critical value of the warning indicator is determined according to the actual coal dust discharged during the drilling process and the dynamic phenomenon thereof, and the area is determined to have the impact risk after the rotating speed ratio exceeds the critical value.
When the drilling cutting method is adopted to carry out rock burst monitoring and early warning, the early warning can be carried out according to the following impact danger judging table in the drilling process.
Impact danger judging meter in drilling process
The above measurement results are applied only to the current measurement area.
In an alternative embodiment, the present invention further provides a device for predicting rock burst hazard pressure by using fixed-force drill cuttings, which comprises a drill carriage 1, a monitoring system 3: the drill carriage 1 is provided with wheels and can move in a roadway, the drill carriage 1 is provided with an operating platform 2, and a drilling machine is controlled through the operating platform 2 to drill with constant propelling force; the monitoring system 3 is arranged on the drill carriage 1 to monitor the drilling machine in real time; the monitoring system 3 includes: the detection element monitors along with the rotating speed of the motor; the detection element can be specifically a Hall sensor or an encoder; the processor is used for drawing a curve graph of the change of the rotating speed of the drilling machine along with the drilling depth in real time according to the depth of the drill rod and the rotating speed of the motor; the display screen is used for displaying a curve graph of the change of the rotation speed of the drilling machine along with the drilling depth, the rotation speed of the drilling machine is monitored in real time in the drilling process, whether a monitoring area has impact danger or not is judged according to the rotation speed ratio and the power display condition in the drilling process, the pre-judging structure is displayed on the display screen, and furthermore, a buzzer or an explosion flash lamp can be arranged, and when the impact danger is judged in advance, the buzzer or the explosion flash lamp is driven by the processor to remind related operators in a roadway. It should be understood that the above description is only exemplary, and the embodiments of the present application do not limit the present invention.
The above description is only exemplary of the invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the invention is intended to be covered by the appended claims.
Claims (10)
1. A method for predicting rock burst danger by fixed-force drill cuttings is characterized in that a drilling machine is always kept to drill with constant propelling force in the drilling process, the rotating speed of the drilling machine is monitored in real time, and whether a monitoring area has impact danger or not is judged according to the rotating speed ratio and the power display condition in the drilling process.
2. The method for predicting rock burst danger through fixed-force drill cuttings according to claim 1, wherein during drilling, the rotating speed of a motor is monitored in real time through a monitoring system, and a graph of the change of the rotating speed of a drilling machine along with the drilling depth is drawn in real time according to the drilling depth and the rotating speed of the motor.
3. The method for predicting rock burst danger according to the fixed-force drill cuttings as claimed in claim 2, characterized in that in a normal stress area, the average value of a plurality of point positions on a graph of the change of the rotation speed of a drilling machine along with the drilling depth is used as a basic rotation speed;
in the monitoring area, recording the motor rotating speed of the drilling machine in the drilling process as a monitoring rotating speed in real time;
and taking the value obtained by monitoring the rotating speed by the basic rotating speed ratio as the rotating speed ratio.
4. The method for predicting rock burst danger according to the fixed-force drill cuttings as claimed in claim 3, wherein a graph of the variation of the drill speed while drilling depth is drawn for not less than five drill holes constructed in a normal stress area.
5. The method for predicting rock burst danger through fixed-force drill cuttings according to claim 1, wherein the holes are drilled in stress redistribution and stress peak areas, the holes are arranged perpendicular to a coal wall or parallel to a coal seam, and the maximum depth is 3-4 times of the roadway height;
on two sides of the roadway, the height of the drill hole from the ground is 0.5-1.5 m, the distance between adjacent drill holes is 10-30 m, the distance between the stope roadway drill hole and the working face is not less than 100m, and the excavation roadway drill hole is arranged at the position 60m behind the excavation working face.
6. The method for predicting rock burst danger by using the drill cuttings with constant force as claimed in claim 5, wherein the height of the drill holes from the ground is 0.5-1.5 m, and the distance between adjacent drill holes is 10-50 m.
7. The method for predicting rock burst danger according to the fixed-force drill cuttings as claimed in claim 5, wherein the height of the drilled hole from the ground is 0.5-1.5 m in the driving face, and each 10m 2 ～20m 2 A bore is arranged.
8. The method for predicting rock burst danger through fixed-force drill cuttings according to claims 5-7, wherein the phenomena of drill sticking, drill suction, top drilling, abnormal sound and in-hole impact occur in the construction process, the situation that power appears is judged, and the area has the impact danger.
9. The method for predicting rock burst danger through fixed-force drill cuttings according to claim 1, wherein a critical value of an early warning index is determined according to actual discharged coal dust in a drilling process and a power phenomenon of the coal dust, and the region is judged to have the rock burst danger after a rotating speed ratio exceeds the critical value.
10. An apparatus for predicting rock burst risk of fixed force drill cuttings, comprising:
the drilling machine is provided with an operation table, and the drilling machine is controlled to drill with constant propelling force through the operation table;
a monitoring system disposed on the drill rig to monitor the drill rig in real time;
in the drilling process, the rotating speed of the drilling machine is monitored in real time, and whether the monitoring area has impact danger or not is judged according to the rotating speed ratio and the power display condition in the drilling process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210904307.9A CN115234303A (en) | 2022-07-28 | 2022-07-28 | Method and device for predicting rock burst danger by fixed-force drill cuttings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210904307.9A CN115234303A (en) | 2022-07-28 | 2022-07-28 | Method and device for predicting rock burst danger by fixed-force drill cuttings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115234303A true CN115234303A (en) | 2022-10-25 |
Family
ID=83677420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210904307.9A Pending CN115234303A (en) | 2022-07-28 | 2022-07-28 | Method and device for predicting rock burst danger by fixed-force drill cuttings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115234303A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3337607A1 (en) * | 1983-10-15 | 1985-05-09 | Bergwerksverband Gmbh, 4300 Essen | Procedure for the early detection of the danger of rock burst and device for carrying out the procedure |
| CN102587983A (en) * | 2012-01-12 | 2012-07-18 | 山东科技大学 | Comprehensive early-warning observation method for coal mine rock burst |
| CN206581937U (en) * | 2017-03-06 | 2017-10-24 | 彬县水帘洞煤炭有限责任公司 | A kind of bump drilling cuttings coal dust is classified apparatus for collection and analysis |
| CN108119141A (en) * | 2017-11-06 | 2018-06-05 | 中国矿业大学 | A kind of bore surveys integration experimental platform |
| CN110778363A (en) * | 2019-11-06 | 2020-02-11 | 山东科技大学 | Method for determining coal body stress peak area and early warning through multi-parameter measurement while drilling |
| CN111325461A (en) * | 2020-02-18 | 2020-06-23 | 山东科技大学 | Real-time evaluation method for coal seam impact risk based on vibration monitoring technology |
-
2022
- 2022-07-28 CN CN202210904307.9A patent/CN115234303A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3337607A1 (en) * | 1983-10-15 | 1985-05-09 | Bergwerksverband Gmbh, 4300 Essen | Procedure for the early detection of the danger of rock burst and device for carrying out the procedure |
| CN102587983A (en) * | 2012-01-12 | 2012-07-18 | 山东科技大学 | Comprehensive early-warning observation method for coal mine rock burst |
| CN206581937U (en) * | 2017-03-06 | 2017-10-24 | 彬县水帘洞煤炭有限责任公司 | A kind of bump drilling cuttings coal dust is classified apparatus for collection and analysis |
| CN108119141A (en) * | 2017-11-06 | 2018-06-05 | 中国矿业大学 | A kind of bore surveys integration experimental platform |
| CN110778363A (en) * | 2019-11-06 | 2020-02-11 | 山东科技大学 | Method for determining coal body stress peak area and early warning through multi-parameter measurement while drilling |
| CN111325461A (en) * | 2020-02-18 | 2020-06-23 | 山东科技大学 | Real-time evaluation method for coal seam impact risk based on vibration monitoring technology |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11048002B1 (en) | Visualization system for simulating excavation of fluid-structure interaction tunnel | |
| CN105422088A (en) | Coal mine roadway geological parameter on-line monitoring system | |
| CN110645040A (en) | Outburst coal seam 'Wuding' gas treatment method based on directional drilling machine | |
| CN114135278A (en) | Intelligent identification and prediction system and method for perception of unfavorable geology while drilling | |
| CN105065000A (en) | Rapid coal uncovering process and outburst prevention method of large-section tunnel | |
| CN102852524B (en) | Method for utilizing hydraulic support to improve bauxite recovery rate | |
| CN106771066A (en) | The analogue experiment installation and synergic monitoring method of mining overburden motion influence ore deposit pressure | |
| CN110984968A (en) | While-drilling pressure relief monitoring method | |
| JP2002013381A (en) | Bedrock probing method | |
| CN110778363A (en) | Method for determining coal body stress peak area and early warning through multi-parameter measurement while drilling | |
| CN105093349A (en) | Method for actually measuring growth and development rule of crack in tunnel roof | |
| CN113700477B (en) | Device and method for detecting coal gas parameters at lower part of steep goaf | |
| CN103643996B (en) | Driving face gas outbursts Prediction method based on graphic-arts technique | |
| CN108286459A (en) | Back potentially danger rock stratum method of determining range | |
| CN110579194B (en) | On-site testing method and application of fracture position of lateral basic roof rock beam of gob-side roadway | |
| CN106483197A (en) | A kind of Floor Heave in Roadway sorting technique based on original position sonic test | |
| CN109211039A (en) | A kind of opencast mining method for high temperature goaf | |
| CN115234303A (en) | Method and device for predicting rock burst danger by fixed-force drill cuttings | |
| CN210660062U (en) | Roadway roof lithologic component measurement-while-drilling device based on rock debris logging technology | |
| CN112034530A (en) | Room and column type goaf exploration system and method | |
| CN115059510B (en) | Method and device for predicting rock burst danger by uniform-speed drilling cuttings | |
| CN106996305B (en) | A kind of coal mine gob Adjacent Working Face relief range measuring method | |
| CN107461208B (en) | A kind of contact pipeline well and construction method on inclined orebody | |
| CN202325482U (en) | Drill hole depth metering device | |
| CN2349348Y (en) | Instrument for surveying leak off rate and thief zone |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |