CN114577077A - Tunnel excavation blasting optimization method based on drilling energy dissipation monitoring - Google Patents
Tunnel excavation blasting optimization method based on drilling energy dissipation monitoring Download PDFInfo
- Publication number
- CN114577077A CN114577077A CN202111304431.3A CN202111304431A CN114577077A CN 114577077 A CN114577077 A CN 114577077A CN 202111304431 A CN202111304431 A CN 202111304431A CN 114577077 A CN114577077 A CN 114577077A
- Authority
- CN
- China
- Prior art keywords
- displacement
- calculating
- stress
- rock breaking
- drilling
- 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
- 238000005422 blasting Methods 0.000 title claims abstract description 40
- 238000005553 drilling Methods 0.000 title claims abstract description 38
- 238000009412 basement excavation Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000012544 monitoring process Methods 0.000 title claims abstract description 14
- 238000005457 optimization Methods 0.000 title claims abstract description 13
- 230000021715 photosynthesis, light harvesting Effects 0.000 title claims abstract description 13
- 238000006073 displacement reaction Methods 0.000 claims abstract description 42
- 239000011435 rock Substances 0.000 claims abstract description 36
- 239000002360 explosive Substances 0.000 claims abstract description 23
- 238000010586 diagram Methods 0.000 claims abstract description 4
- 238000010276 construction Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/003—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by analysing drilling variables or conditions
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/006—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by making use of blasting methods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
- F42D1/10—Feeding explosives in granular or slurry form; Feeding explosives by pneumatic or hydraulic pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
Abstract
The invention belongs to the field of tunnel engineering construction, and particularly relates to a tunnel excavation blasting optimization method based on drilling energy dissipation monitoring. S100, installing a dynamic pressure gauge on a drill rod clamp of a drilling machine, installing a stress sensor on the bottom surface of a drill bit of the drilling machine, and installing a displacement meter at the tail end of a drill rod of the drilling machine; s200, drilling by a drilling machine, acquiring a displacement dynamic curve, a stress dynamic curve and a pressure dynamic curve through a displacement meter, a stress sensor and a dynamic pressure gauge, then acquiring a drill bit stress displacement-following curve and a drill rod pressure displacement-following curve through a time corresponding relation, and providing basic data for calculating the rock breaking specific energy; s300, calculating specific energy required for rock breaking at different depths of the drill hole based on the drill stress displacement-following curves and the drill rod pressure displacement-following curves, and meanwhile calculating to obtain a rock breaking specific energy-displacement diagram; s400, calculating the energy required by single-hole blasting rock breaking; s500, calculating the explosive quantity required by a single hole; s600, calculating the number of the required explosive rolls; s700-distributing spaced charging according to the specific energy required by rock breaking.
Description
Technical Field
The invention belongs to the field of tunnel engineering construction, and particularly relates to a tunnel excavation blasting optimization method based on drilling energy dissipation monitoring.
Background
In recent years, capital construction projects of China are on the horse on a large scale, tunnel projects are an important part of the capital construction projects, excavation modes in tunnel project construction are generally divided into manual excavation, mechanical excavation and blasting excavation, and the blasting excavation has the remarkable characteristic of low construction cost, so that the blasting excavation is generally adopted in mountain tunnels. The blasting excavation blasting mode depends on the physical and mechanical properties of rock masses, the blasting design is usually based on engineering rock mass grading, but the design method is too coarse, the unevenness and the variability of rock masses on tunnel face cannot be accurately reflected, the phenomena of blasting overexcavation and underexcavation are caused, explosive is wasted, the stability of the tunnel is poor, or additional construction such as follow-up additional excavation, filling and grouting is required. The current popular design method is controlled blasting, the design of the method is based on the physical and mechanical properties of the rock mass, the arrangement and charging mode of blastholes are scientifically and reasonably designed, devices such as directional blasting tubes and the like are sometimes used as auxiliary devices, and the basis on which the method depends is the physical and mechanical properties of the rock mass to be blasted. At present, the problem to be solved urgently is to accurately and timely master the blasting energy required by a rock mass to be blasted.
Therefore, in consideration of the blasting accuracy and the design adjustment timeliness, the invention provides a tunnel excavation blasting optimization method based on drilling energy dissipation monitoring so as to overcome the defects in the tunnel blasting technology.
Disclosure of Invention
The invention aims to solve the problems and provides a tunnel excavation blasting optimization method based on drilling energy dissipation monitoring.
The invention adopts the following technical scheme: a tunnel excavation blasting optimization method based on drilling hole energy dissipation monitoring comprises the following steps.
S100, installing a dynamic pressure gauge on a drill rod clamp of the drilling machine, wherein the sensing surface of the dynamic pressure gauge faces the front of a drill rod, and the dynamic pressure gauge is connected with a pressure data display instrument; a stress sensor is arranged on the bottom surface of a drill bit of the drilling machine and connected with a stress data display instrument; the tail end of a drill rod of the drilling machine is provided with a displacement meter, and the displacement meter is connected with a displacement data display instrument.
S200, drilling by a drilling machine, acquiring a displacement dynamic curve, a stress dynamic curve and a pressure dynamic curve through a displacement meter, a stress sensor and a dynamic pressure gauge, and then acquiring a drill bit stress displacement-following curve and a drill rod pressure displacement-following curve through a time corresponding relation, so as to provide basic data for calculating the rock breaking ratio at different depths of the drilled hole.
S300-utilization formula
The specific energy required for rock breaking at different depths of the drill hole is calculated based on the drill bit stress along with displacement and the drill rod pressure along with the displacement curve, E is the specific energy required for rock drilling at each point, sigma is the stress value displayed by the stress sensor at each point, P is the pressure value displayed by the pressure sensor at each point, D is the diameter of the drill hole, K is 4.2 sigma, the depth of the drill hole is equal to the displacement value of the displacement sensor, and meanwhile, a rock breaking specific energy-displacement graph is obtained through calculation.
S400-advantageBy the formula
And calculating the energy required by rock breaking of the single-hole blasting, wherein W is the energy required by the face blasting, L is the depth of the blast hole, and A is the blasting area controlled by the single hole.
S500-utilization formula
And calculating the explosive quantity required by the single hole, wherein Q is the mass of the explosive, and M is the explosive energy of the unit mass of the explosive.
S600-utilization formula
And calculating the number of rolls of required explosives, wherein N is the number of rolls of required explosives, and q is the mass of a single roll of explosives.
S700-spaced charging is distributed according to the rock breaking specific energy.
Compared with the prior art, the dynamic pressure gauge is arranged on the drill rod clamp of the drilling machine, the sensing surface of the pressure gauge faces to the front of a drill rod, and the pressure gauge is connected with a data line and a pressure data display instrument; a stress sensor is arranged on the bottom surface of the drill bit, and a stress sensor data wire is led out from the interior of the drill rod and is connected with a stress data display instrument; a displacement meter is arranged at the tail end of the drill rod and is connected with a displacement data display instrument through a data line; acquiring a displacement dynamic curve, a stress dynamic curve and a pressure dynamic curve in the drilling process of a drilling machine; and calculating the specific energy required for rock breaking at different positions by using a formula. The test equipment is simple to install, clear in calculation principle and simple and convenient in calculation method, can accurately predict the specific energy required by rock breaking of the rock mass in real time, and designs the blasting mode and charging according to the energy required by blasting the rock mass, thereby greatly improving the blasting efficiency and the blasting quality.
The following advantageous effects can thus be brought about: 1. each sensor is simple and convenient to install, can be suitable for most of drilling machines and is strong in popularization; 2. the invention has simple principle and easy operation; 3. the invention can monitor in real time and obtain the rock breaking specific energy at different positions in time; 4. the invention can quickly and conveniently calculate and obtain the energy required by blasting.
Drawings
FIG. 1 is a perspective view illustrating the installation of monitoring devices in the method;
FIG. 2 is a graph of an example of the monitored stress versus time;
FIG. 3 is a graph of an example of the monitoring displacement versus time;
FIG. 4 is a graph of an example of the monitored pressure versus time;
FIG. 5 is a graph of an example of the transformation stress-displacement;
FIG. 6 is a diagram of an example of the transition pressure-displacement;
FIG. 7 is a diagram of an example of the lithotripsy-displacement;
FIG. 8 is a graph of example of mass-displacement of the rock breaking;
FIG. 9 is a graph showing examples of specific energy charges according to rock breaking;
in the figure, 1 is a drilling machine base, 2 is a drill rod clamp, 3 is a drill rod, 4 is a drill bit, 5 is a stress sensor, 6 is a pressure sensor, 7 is a displacement sensor, 8 is a data transmission line, 9 is a stress data display instrument, 10 is a displacement data display instrument, and 11 is a pressure data display instrument.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A tunnel excavation blasting optimization method based on drilling hole energy dissipation monitoring comprises the following steps:
s100, referring to fig. 1, installing a dynamic pressure gauge 6 on a drill rod clamp 2 of a drilling machine, wherein the sensing surface of the dynamic pressure gauge 6 faces the front of a drill rod, and the dynamic pressure gauge 6 is connected with a pressure data display instrument; a stress sensor 5 is arranged on the bottom surface of a drill bit 4 of the drilling machine, and the stress sensor 5 is connected with a stress data display instrument 9; the displacement meter 7 is arranged at the tail end of the drill rod 3 of the drilling machine, and the displacement meter 7 is connected with a displacement data display instrument 10.
S200, drilling by a drilling machine, acquiring a displacement dynamic curve (figure 3), a stress dynamic curve (figure 2) and a pressure dynamic curve (figure 4) through a displacement meter 7, a stress sensor 5 and a dynamic pressure gauge 6, and then acquiring a drill bit stress displacement-following curve (figure 5) and a drill rod pressure displacement-following curve (figure 6) through a time correspondence relationship.
S300-utilization formula
The specific energy required for rock breaking at different depths of the drilled hole is calculated based on the drill bit stress along with displacement and the drill rod pressure along with displacement curves, E is the specific energy required for rock drilling of each point, sigma is the stress value displayed by the stress sensor at each point, P is the pressure value displayed by the pressure sensor at each point, D is the diameter of the drilled hole, the diameter of the drilled hole is 45mm, and K is 4.2 sigma, and meanwhile, a rock breaking specific energy-displacement graph (figure 7) is obtained through calculation.
S400-utilization formula
And calculating the energy required by single-hole blasting rock breaking, wherein W is the energy required by the tunnel face blasting, L is the blast hole depth, and A is the single-hole control blasting area. In the experiment, the depth of the blast holes is 2200mm, the distance is 800mm, namely A =0.64m2W =2.32MJ was calculated.
S500-utilization formula
Calculating the explosive quantity required by a single hole, wherein Q is the mass of the explosive, and M is the explosion energy of the explosive with unit mass; taking the mining emulsion explosive M as 3MJ/kg, and calculating to obtain Q =0.77 kg.
S600-utilization formula
Calculating the number of rolls of required explosives, wherein N is the number of rolls of the required explosives, and q is the mass of a single roll of explosives; the standard 35 × 200mm drug roll is 200 g/roll, i.e. q is 200g, calculated as N =3.87, and N is taken as 4 rolls.
S700-spaced charging is distributed according to the rock breaking specific energy.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. A tunnel excavation blasting optimization method based on drilling energy dissipation monitoring is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
s100, installing a dynamic pressure gauge (6) on a drill rod clamp (2) of the drilling machine, wherein the sensing surface of the dynamic pressure gauge (6) faces the front of a drill rod, and the dynamic pressure gauge (6) is connected with a pressure data display instrument; a stress sensor (5) is arranged on the bottom surface of a drill bit (4) of the drilling machine, and the stress sensor (5) is connected with a stress data display instrument (9); a displacement meter (7) is arranged at the tail end of a drill rod (3) of the drilling machine, and the displacement meter (7) is connected with a displacement data display instrument (10);
s200, drilling by a drilling machine, acquiring a displacement dynamic curve, a stress dynamic curve and a pressure dynamic curve through a displacement meter (7), a stress sensor (5) and a dynamic pressure gauge (6), and then acquiring a drill bit stress-displacement curve and a drill rod pressure-displacement curve through a time correspondence relationship to provide basic data for calculating the rock breaking specific energy;
s300, calculating specific energy required for rock breaking at different depths of the drill hole based on the drill stress displacement-following curves and the drill rod pressure displacement-following curves, and meanwhile calculating to obtain a rock breaking specific energy-displacement diagram;
s400, calculating the energy required by single-hole blasting rock breaking;
s500, calculating the explosive quantity required by a single hole;
s600, calculating the number of the required explosive rolls;
s700-distributing spaced charging according to the specific energy required by rock breaking.
2. The tunnel excavation blasting optimization method based on drilling energy dissipation monitoring as claimed in claim 1, wherein: in the step S300, a formula is used
And calculating specific energy required for rock breaking, wherein E is the specific energy required for drilling and breaking rock masses at each point, sigma is the stress value displayed by the stress sensor at each point, P is the pressure value displayed by the pressure sensor at each point, D is the diameter of the drilled hole, K is 4.2 sigma, and the depth of the drilled hole is equal to the displacement value of the displacement sensor.
3. The tunnel excavation blasting optimization method based on borehole energy dissipation monitoring as recited in claim 1, wherein: in the step S400, a formula is used
And calculating, wherein W is the energy required by the blasting of the tunnel face, L is the depth of the blast hole, and A is the single-hole blasting area control.
4. The tunnel excavation blasting optimization method based on borehole energy dissipation monitoring as recited in claim 1, wherein: in the step S500, a formula is used
And calculating, wherein Q is the mass of the explosive, and M is the explosive energy per unit mass.
5. The tunnel excavation blasting optimization method based on borehole energy dissipation monitoring as recited in claim 1, wherein: in the step S600, a formula is used
And calculating, wherein N is the volume number of the required explosive, and q is the mass of a single volume of explosive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111304431.3A CN114577077B (en) | 2021-11-05 | 2021-11-05 | Tunnel excavation blasting optimization method based on drilling energy dissipation monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111304431.3A CN114577077B (en) | 2021-11-05 | 2021-11-05 | Tunnel excavation blasting optimization method based on drilling energy dissipation monitoring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114577077A true CN114577077A (en) | 2022-06-03 |
| CN114577077B CN114577077B (en) | 2024-04-19 |
Family
ID=81768288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111304431.3A Active CN114577077B (en) | 2021-11-05 | 2021-11-05 | Tunnel excavation blasting optimization method based on drilling energy dissipation monitoring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114577077B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116592722A (en) * | 2023-07-14 | 2023-08-15 | 江汉大学 | Method for calculating tunnel blasting explosive dosage through drilling process characteristics |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1146448A1 (en) * | 1983-07-01 | 1985-03-23 | Институт Геотехнической Механики Ан Усср | Method of assessing the strained state of rock body |
| CN102663183A (en) * | 2012-03-31 | 2012-09-12 | 浙江大学 | Blasting simulation method in digital mine |
| CN107941106A (en) * | 2017-11-24 | 2018-04-20 | 中铁十局集团第四工程有限公司 | A kind of drilling and charge device and charging operation method for tunnel blasting excavation |
| RU2677727C1 (en) * | 2018-02-21 | 2019-01-21 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Тихоокеанский государственный университет" | Optimal es charge determining method taking into account of the pre-destruction zone |
| CN110986706A (en) * | 2019-11-08 | 2020-04-10 | 武汉武重矿山机械有限公司 | Rock drilling explosive performance detection method |
| CN111101952A (en) * | 2019-12-16 | 2020-05-05 | 中铁十六局集团路桥工程有限公司 | Construction method for tunnel blasting of complex layered rock stratum |
-
2021
- 2021-11-05 CN CN202111304431.3A patent/CN114577077B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1146448A1 (en) * | 1983-07-01 | 1985-03-23 | Институт Геотехнической Механики Ан Усср | Method of assessing the strained state of rock body |
| CN102663183A (en) * | 2012-03-31 | 2012-09-12 | 浙江大学 | Blasting simulation method in digital mine |
| CN107941106A (en) * | 2017-11-24 | 2018-04-20 | 中铁十局集团第四工程有限公司 | A kind of drilling and charge device and charging operation method for tunnel blasting excavation |
| RU2677727C1 (en) * | 2018-02-21 | 2019-01-21 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Тихоокеанский государственный университет" | Optimal es charge determining method taking into account of the pre-destruction zone |
| CN110986706A (en) * | 2019-11-08 | 2020-04-10 | 武汉武重矿山机械有限公司 | Rock drilling explosive performance detection method |
| CN111101952A (en) * | 2019-12-16 | 2020-05-05 | 中铁十六局集团路桥工程有限公司 | Construction method for tunnel blasting of complex layered rock stratum |
Non-Patent Citations (1)
| Title |
|---|
| 袁文华;马芹永;: "煤矿深部岩石力学性能试验分析与硬岩巷道快速掘进方法研究", 岩石力学与工程学报, no. 1, 25 May 2010 (2010-05-25), pages 2853 - 2857 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116592722A (en) * | 2023-07-14 | 2023-08-15 | 江汉大学 | Method for calculating tunnel blasting explosive dosage through drilling process characteristics |
| CN116592722B (en) * | 2023-07-14 | 2023-09-12 | 江汉大学 | Method for calculating tunnel blasting explosive dosage through drilling process characteristics |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114577077B (en) | 2024-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107796646B (en) | Test device and test method for simulating blasting excavation unloading of deep-buried tunnel | |
| CN102134965B (en) | Long positioned drill hole drilling tool for extracting gas from coal seam roof and construction method thereof | |
| CN107133381B (en) | Method for determining length of anchor rod for roadway support | |
| CN114577077A (en) | Tunnel excavation blasting optimization method based on drilling energy dissipation monitoring | |
| Navarro et al. | Assessment of drilling deviations in underground operations | |
| CN111411942A (en) | Ground stress testing device and method for trepanning stress relief method | |
| CN106546359A (en) | A kind of surrouding rock stress measuring system | |
| CN113700469B (en) | Underground mine roadway tunneling blast hole deviation measuring device and using method thereof | |
| CN205384380U (en) | Tubular metal resonator combination formula coal mining water guide crack area height measurement device | |
| CN203534738U (en) | Borehole stressmeter with force-measuring direction thereof to be accurately controlled | |
| CN108489746B (en) | Device and method for laying soil pressure gauge monitoring model shield machine in spiral soil discharger | |
| CN106761804A (en) | One kind is equipped on TBM advanced hydraulic pressure detection device and method in real time | |
| CN107941137A (en) | Arbitrary angle drilling deformation measurement method | |
| CN109057777B (en) | Measuring device for drilling drift diameter description and using method thereof | |
| CN113756781B (en) | Low-cost ground stress testing method | |
| CN110295848A (en) | A kind of levelling boring method of blast hole bottom hole | |
| CN110644439B (en) | Method for quickly forming barrier body impervious wall | |
| CN109655400B (en) | Roadway plastic region analysis method | |
| CN213067542U (en) | Device for measuring inclination angle of blast hole | |
| CN110644440B (en) | Method for forming groove on anti-seepage wall of dam plug body | |
| CN113916074A (en) | Method and device for intelligently and quickly forming cutting raise by deep hole blasting | |
| CN108801530B (en) | Working face advanced support pressure influence range actual measurement method | |
| CN112648955A (en) | Method and device for monitoring and simulating rock movement induced by coal mining | |
| CN116592722B (en) | Method for calculating tunnel blasting explosive dosage through drilling process characteristics | |
| CN207317727U (en) | A kind of arbitrary angle drilling deformation measurement instrument |
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 | ||
| CB03 | Change of inventor or designer information |
Inventor after: Cheng Junwen Inventor after: Qin Yun Inventor after: Zhang Shuhao Inventor after: Niu Shaoqing Inventor after: Sun Longhua Inventor after: Chi Lei Inventor after: Wang Zijun Inventor after: Liu Pengjun Inventor after: Wu Yunlong Inventor after: Su Xin Inventor after: Zhang Zefeng Inventor after: Liu Yan Inventor after: Sun Kanghua Inventor after: Chen Peili Inventor after: Fu Zhongyang Inventor after: Liu Wanlin Inventor after: Jia Zongyu Inventor after: Ye Zhibin Inventor after: Yang Shuangsuo Inventor before: Chen Peili Inventor before: Zhang Shuhao Inventor before: Niu Shaoqing Inventor before: Sun Longhua Inventor before: Chi Lei Inventor before: Fu Zhongyang Inventor before: Wang Zijun Inventor before: Liu Pengjun Inventor before: Wu Yunlong Inventor before: Su Xin Inventor before: Zhang Zefeng Inventor before: Liu Wanlin Inventor before: Cheng Junwen Inventor before: Jia Zongyu Inventor before: Liu Yan Inventor before: Ye Zhibin Inventor before: Yang Shuangsuo Inventor before: Qin Yun Inventor before: Sun Kanghua |
|
| CB03 | Change of inventor or designer information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |