CN113188384A - Cutting parameter optimization method based on rock hardness classification - Google Patents
Cutting parameter optimization method based on rock hardness classification Download PDFInfo
- Publication number
- CN113188384A CN113188384A CN202110424655.1A CN202110424655A CN113188384A CN 113188384 A CN113188384 A CN 113188384A CN 202110424655 A CN202110424655 A CN 202110424655A CN 113188384 A CN113188384 A CN 113188384A
- Authority
- CN
- China
- Prior art keywords
- rock
- hardness
- explosive
- coefficient
- blast
- 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
- 239000011435 rock Substances 0.000 title claims abstract description 126
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000005520 cutting process Methods 0.000 title claims abstract description 27
- 238000005457 optimization Methods 0.000 title claims description 9
- 239000002360 explosive Substances 0.000 claims abstract description 36
- 230000005641 tunneling Effects 0.000 claims abstract description 20
- 230000006872 improvement Effects 0.000 claims abstract description 7
- 230000004075 alteration Effects 0.000 claims abstract description 3
- 239000010453 quartz Substances 0.000 claims description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 229910052683 pyrite Inorganic materials 0.000 claims description 8
- 239000011028 pyrite Substances 0.000 claims description 8
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 claims description 8
- 238000005553 drilling Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 6
- 239000000839 emulsion Substances 0.000 claims description 4
- 239000003814 drug Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000005755 formation reaction Methods 0.000 claims 1
- 238000005422 blasting Methods 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 6
- 238000009412 basement excavation Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 2
- 238000005065 mining Methods 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 4
- 210000003462 vein Anatomy 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229910052951 chalcopyrite Inorganic materials 0.000 description 2
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 230000000087 stabilizing effect 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 OR ROCK 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
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a method for optimizing cutting parameters based on rock hardness classification, which relates to the field of design and excavation of mine roadways and comprises the following steps: the method comprises the following steps: judging the rock surrounding rock structure, the surrounding rock alteration and the surrounding rock components on site; step two: determining factors influencing the efficiency of a tunneling single gun and designing improvement measures; step three: determining the cutting parameters optimized according to the hardness and softness of the rock; step four: reasonable undermining parameters are adopted according to different rock structures and the explosive is reasonably charged. The underholing parameters are optimized according to the hardness and the trend of the rock of the roadway, and the defects of poor blasting effect, high unit consumption of explosive and short footage under a complex rock structure are overcome.
Description
Technical Field
The invention belongs to the field of metal mine roadway excavation and blasting, and particularly relates to a method for optimizing cutting parameters based on rock hardness classification.
Background
The deep mining company belongs to a silver colored group and belongs to a medium copper mine, the annual output is 50 ten thousand tons, and the mining method is a sill pillar-free sublevel caving method. The mining and excavation of the mine are divided into an east mining area and a west mining area by a 700 exploration line, ore bodies of the east mining area are mainly lump ore, dip-dyed iron-containing chalcopyrite and strip-shaped iron-containing chalcopyrite, surrounding rocks are relatively complete and stable and are above medium hardness, a crushing zone and a quartz zone are locally arranged, the ore bodies are relatively dense, the ore bodies of the west mining area are mainly dip-dyed and strip-shaped, large-area lump ores are few, the surrounding rocks are complete and stable and are above medium hardness, the crushing zone and the quartz zone are locally arranged, the ore bodies are relatively sparse, the well excavation is mainly an extravaal transportation lane, a pulse-penetrating lane, a sectional roadway and the like. The total amount of mine year tunneling is 3000-3500m, the section specification is 3.0m multiplied by 3.0m three-centered arch roadway, the tunneling equipment is YT28 air-leg type pneumatic rock drill, the aperture is 36-43mm, the diameter of blast hole is generally 38mm, the length of drill rod is 2.2-2.5m, and the depth of hole is 1.8 m.
The tunneling blasting adopts a smooth blasting technology, the ceramic groove mode is a vertical quincunx/barrel type ceramic groove method, and the explosive is 2# rock powdery emulsion explosive. According to the technical conditions of ore deposit mining, the geological conditions of underground surrounding rocks mainly comprise quartz angular porphyry (M pi 1), quartz angular porphyry (M pi 2) and M pi 3 (quartz angular porphyry); the natural types of ores mainly include two main types of compact blocks and dip-dyed blocks. The respective rock body types, the integrity degree, the hardness and the firmness of the surrounding rock and the ore body are different, but in the actual underground production of a mine, a blasting cut parameter is adopted due to the conventional technical management and setting, the average charge of 42kg is tunneled at one time, the single-hole charge amount is 0.78-0.93kg, and the single charge consumption is 3.5-4.8kg/m3Far higher than the unit consumption reference value of tunneling by 1.5-2.5kg/m3。
The reasonability of the arrangement parameters of the cutting holes directly influences the smooth blasting effect in the process of roadway driving. The fixed cutting parameters in deep mining cause larger explosive unit consumption, short blasting footage, more incomplete holes and over-excavation and increased production cost. Based on the production practice, how to determine the smooth blasting undermining parameters based on rock soft and hard condition classification achieves the purposes of reducing the unit explosive consumption, stabilizing blasting footage and reducing the production cost, and becomes a technical problem to be solved urgently in mines.
Disclosure of Invention
The invention aims to: aiming at the existing problems, the invention provides a cutting parameter optimization method based on rock hardness classification, which optimizes cutting parameters according to the rock hardness and the trend of a roadway and overcomes the defects of poor blasting effect, large explosive unit consumption and short footage under a complex rock structure.
The technical scheme adopted by the invention is as follows:
a cutting parameter optimization method based on rock hardness classification comprises the following steps:
the method comprises the following steps: judging the rock surrounding rock structure, the surrounding rock alteration and the surrounding rock components on site;
step two: determining factors influencing the efficiency of a tunneling single gun and designing improvement measures; corresponding cutting hole parameters are set according to different rock structures and different hardness degrees, so that the blasting efficiency is improved;
step three: determining the cutting parameters optimized according to the hardness and softness of the rock;
step four: reasonable undermining parameters are adopted according to different rock structures and the explosive is reasonably charged.
On the basis of the technical scheme, preferably, in the second step, the factors influencing the tunneling single-shot efficiency comprise a rock firmness coefficient f, a shot hole diameter, a bubble hole spacing, a minimum resistance line, a shot hole density coefficient and a loading amount.
On the basis of the above technical solution, preferably, in the third step, the slitting parameters are specifically: when the rock stratum is complete and stable, the rock stratum is more than medium hard, the rock firmness coefficient f is 8-10, the diameter of the blast hole is 42-45mm, the distance between the blast holes is 600-700mm, the minimum resistance line is 500-700mm, the density coefficient of the blast hole is 1.0-1.1, and the loading is 0.2-0.3 Kg.m-3；
When the rock stratum is medium hard and has no development of layer joints and the firmness coefficient f of the rock is 6-8, the diameter of each blast hole is 35-42mm, the distance between the blast holes is 500-600mm, the minimum resistance line is 600-800mm, the density coefficient of the blast holes is 0.8-0.9, and the loading is 0.15-0.3 Kg.m-3；
When the condition of the rock stratum is soft and the layer joint develops, the firmness coefficient f of the rock is<6 hours, the diameter of the blast hole is 35-42mm, the distance between the blast holes is 350-500mm, the minimum resistance line is 500-700mm, the density coefficient of the blast hole is 0.7-0.8, and the blast hole is arrangedThe dosage is 0.1-0.15 Kg.m-3。
Preferably, when rock surrounding rock geological conditions or rocks are tunneled under the conditions of M II 3 (quartz angular porphyry), quartz angular porphyry (M II 1), quartz angular porphyry (M II 2) and waste rocks as main or small parts of ore bodies, the improvement measures (namely cutting parameters and charging) are as follows: normally drilling holes, wherein the peripheral holes can be reduced by 150-300 g of emulsion explosive in the charging process; the loading quantity of 150 g-300 g is properly reduced in the central 3 and 5 sections of the slotted hole. The explosive in one section of the center hole can be prevented from exploding, and the explosives in the holes of 3 and 5 sections can be brought out while the rock is damaged, so that waste is caused; the auxiliary hole drilling angle is small, and the distance between the bottoms of the holes is increased.
Preferably, when the geological conditions of rock surrounding rocks or rock components such as massive copper-containing pyrite ore, impregnated copper-containing pyrite ore and quartz are taken as main components or the overall structure firmness coefficient of the rock is 8-10, the improvement measures (namely the undercutting parameters and the charging) of the blast hole of the tunneling working face at the waist hole part are as follows: two auxiliary eyes can be added at the upper part and the lower part of the original waist eye part at equal distance, and the medicine loading is normal. The explosive in the auxiliary hole, which is brought down by the explosive with first explosion and has no explosive power on the rock contact surface, can be reduced properly, and the distance between the coring and the auxiliary hole can be adjusted properly. The auxiliary hole drilling angle is larger, and the distance between the bottoms of the holes is reduced. In order to improve the blasting effect, the auxiliary holes must ensure that the depth of blast holes is deepened by 10-15cm compared with peripheral holes, and the loading is increased by 15-20%.
Compared with the prior art, the invention has the beneficial effects that:
1) according to the difference of hardness and softness of rocks in deep east and west stopes, the efficiency is greatly improved by optimizing the cutting parameters and the cutting method. Compared with the average single-gun footage of 1.6 meters before the optimization of the cut parameters, the average single-gun footage is improved to 1.8 meters after the technical scheme of the invention is used, the better roadway specification and the engineering quality are ensured, and on the basis, the average single-gun explosive consumption of 42kg before the optimization of the cut parameters is reduced to 38kg of the average single-gun explosive consumption of the prior art, so that the cost is saved and the efficiency is improved;
2) the invention breaks through the traditional cutting mode, invents the mixed quincunx cutting method according to the relation between different types of tunneling roadways (rock veins and through veins) and the whole surrounding rock on the basis of the vertical barrel type cutting method, forms a rock hardness classification table in a mining area and more conveniently guides production.
Drawings
FIG. 1 is a schematic diagram of a blast hole of a tunneling face under geological conditions of rock surrounding rocks or under the condition that rocks mainly comprise waste rocks or only comprise a small part of ore bodies, wherein the rocks comprise M II 3 (quartz angular spot tuff), quartz angular spot rock (M II 1) and quartz angular spot lava (M II 2);
FIG. 2 is a schematic diagram of a tunneling face blast hole at a waist hole part under geological conditions of rock surrounding rocks or when rock components are mainly rock-lump copper-containing pyrite ore, dip-dyed copper-containing pyrite ore and quartz or when the rock has a large integral structure firmness coefficient, which is also called hard or brittle;
FIG. 3 is a schematic view of a standard tunneling face vertical barrel/quincunx cut; wherein the rhombic area surrounded by 2-10, 2-11, 2-12 and 2-13 is an explosion area of the cutting hole; wherein a polygonal area enclosed by 3-15, 4-16, 3-17, 4-18, 3-19, 4-20, 3-21 and 4-14 is an explosion area of the auxiliary eye; wherein the outermost rectangular area is the burst area of the peripheral eye.
Detailed Description
The present invention will be described in further detail in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Aiming at the situation that the vicinity of a 300 exploration line of an east mining field of a deep copper mine belongs to a broken zone, a metamorphic structural surface develops, more soft interlayers and lamellar rock stratums are arranged, the distribution is dense and discontinuous, the green mud petrochemical property and the sericite property are serious, so that the explosive force of the explosive is not fully exerted, the explosive force is not fully exerted in the view of the whole and long-term single-shot efficiency, the tunneling operation areas of the east and west mining fields mainly concentrate on a 300-plus-material 450 exploration line and a 1000-plus-material 1150 exploration line, the actual blasting quality effect is not good through long-term field data collection, the single-shot explosive consumption has larger fluctuation along with the change of the rock hardness and the surrounding geological environment, the effect is good and time is different, and the production is seriously influenced.
When the wave impedance of the rock is closer to the wave impedance of the explosive, the strain value of the rock is larger, and the rock is easily crushed. In other words, the more "brittle" rock is better in blasting performance, but the more developed rock is poorer in blasting performance of broken zones or cleavage and sericinization in parts of east and west, namely, the rock has good elasticity and mechanical strength and better tensile and tear resistance, and when the blast pressure acts on a rock wall, the utilization rate of explosive blasting energy is very low, so that the blasting rate is low. Determining factors influencing the efficiency of a tunneling single gun and determining cutting parameters optimized according to the hardness and hardness of rocks, as shown in table 1.
Table 1 shows the determination of factors affecting the efficiency of a single gun for tunneling and the determination of the optimal cutting parameters according to the hardness and hardness of the rock
The following is performed for specific rock surrounding rock geological conditions.
Example 1
When the geological conditions of rock surrounding rocks or the rock uses M II 3 (quartz angular spot tuff), quartz angular spot rock (M II 1) and quartz angular spot lava (M II 2) to mainly use waste rocks or to tunnel a tunnel face blast hole schematic diagram (as shown in figure 1) under the condition that only a small part of ore body exists, the following measures are taken:
normally perforating according to normal times, charging, paying attention to the fact that the number of peripheral holes can be reduced by 150-300 g of emulsion explosive. The explosive loading amount is properly reduced at the sections 3 and 5 in the center of the cut hole, so that the explosive explosion at one section of the center hole can be avoided, and the explosive in the holes at the sections 3 and 5 can be brought out while the rock is damaged, thereby causing waste. The auxiliary hole drilling angle is small, and the distance between the bottoms of the holes is increased.
Example 2
Schematic diagram 2 of the blast holes on the heading face at the waist hole part under the geological conditions of rock surrounding rocks or when rock components are mainly lump copper-containing pyrite ore, dip-dyed copper-containing pyrite ore and quartz or when the overall structure of the rock is higher in firmness coefficient and is also called hard or brittle. The measures are taken as follows:
two auxiliary eyes can be added at the upper part and the lower part of the original waist eye part at equal distance, the explosive loading is normal, and the explosive of the auxiliary eyes which are possibly brought down by the explosive which makes a sound first and lose the rock contact surface and have no explosive power can be properly reduced. The distance between the core and the auxiliary eye can be adjusted to be small.
The auxiliary hole drilling angle is larger, and the distance between the bottoms of the holes is reduced.
Through the analysis and demonstration, the average single shot depth of 1.6 meters before 7 months in 2015 of the deep mining company is increased to 1.8 meters by using the method, the better roadway specification and engineering quality are ensured, and the average single shot consumption explosive of 42kg in the past is reduced to 38kg in the current average single shot consumption explosive on the basis. And a solid foundation is laid for saving the cost and improving the efficiency of the mine. The method for optimizing the undermining parameters based on the rock hardness classification not only achieves refinement from the undermining process, but also provides the optimized undermining parameters suitable for different rock hardness and roadway directions according to the hardness of roadway rocks and the angle relation between the trend of a roadway and the trend of an integral rock stratum according to local conditions, improves the blasting efficiency, greatly saves the cost of explosives and the like, and lays a solid foundation for the establishment of green mines.
Compared with a standard tunneling face vertical barrel type/quincunx type cut (as shown in figure 3, a rhombic area surrounded by 2-10, 2-11, 2-12 and 2-13 is a burst area of a cut hole, a polygonal area surrounded by 3-15, 4-16, 3-17, 4-18, 3-19, 4-20, 3-21 and 4-14 is a burst area of an auxiliary hole, and a rectangular area at the outermost periphery is a burst area of peripheral holes), the invention matches different cut parameters and cut methods according to the hardness of rocks; according to different structures of surrounding rocks and ores in the east and west of a mining area, a more matched cut parameter and a cut method are provided; the mixed quincunx cut method is invented on the basis of a vertical barrel type cut method according to the relation between different types of tunneling roadways (rock veins and through veins) and integral surrounding rocks by breaking through the traditional cut method, a rock hardness classification table of a mining area is formed, and production is guided more conveniently. Wherein the blast hole parameters of the standard tunneling face vertical barrel/quincunx cut are detailed in table 2.
TABLE 2 blast hole parameter List
The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.
Claims (5)
1. A cutting parameter optimization method based on rock hardness classification is characterized by comprising the following steps:
the method comprises the following steps: judging the rock surrounding rock structure, the surrounding rock alteration and the surrounding rock components on site;
step two: determining factors influencing the efficiency of a tunneling single gun and designing improvement measures;
step three: determining the cutting parameters optimized according to the hardness and softness of the rock;
step four: reasonable undermining parameters are adopted according to different rock structures and the explosive is reasonably charged.
2. The method for optimizing cutting parameters based on rock hardness classification as claimed in claim 1, wherein in the second step, the factors influencing the efficiency of tunneling single shot include rock firmness factor f, shot diameter, hole spacing, minimum resistance line, shot density factor and loading capacity.
3. A method for the optimization of the slitting parameters based on the classification of rock hardness according to claim 1,
in the third step, the cutting parameters are as follows: when the rock stratum is complete and stable, the rock stratum is more than medium hard, the rock firmness coefficient f is 8-10, the diameter of the blast hole is 42-45mm, the distance between the blast holes is 600-700mm, the minimum resistance line is 500-700mm, the density coefficient of the blast hole is 1.0-1.1, and the loading is 0.2-0.3 Kg.m-3；
When the rock stratum is medium hard and has no development of layer joints and the firmness coefficient f of the rock is 6-8, the diameter of each blast hole is 35-42mm, the distance between the blast holes is 500-600mm, the minimum resistance line is 600-800mm, the density coefficient of the blast holes is 0.8-0.9, and the loading is 0.15-0.3 Kg.m-3(ii) a And the undercuts should be located in soft rock formations.
When the condition of the rock stratum is soft and the layer joint develops, the firmness coefficient f of the rock is<At 6, the diameter of the blast hole is 35-42mm, the distance between the blast holes is 350-500mm, the minimum resistance line is 500-700mm, the blast hole density coefficient is 0.7-0.8, and the loading capacity is 0.1-0.15 Kg.m-3。
4. The rock soft and hard classification-based cutting parameter optimization method according to claim 3, wherein when rock surrounding rock geological conditions or rocks are subjected to M | 3 quartz corner spot tuff, quartz corner spot rock M | 1 and quartz corner spot lava M | 2, and waste rocks are used as main or small parts of ore bodies, a tunnel face blast hole is tunneled, and the improvement measures are specifically as follows: normally drilling holes, wherein 150 and 300 g of emulsion explosive are reduced in the peripheral holes in the explosive charging link; the loading capacity of 150-300 g is properly reduced in the central sections 3 and 5 of the slotted hole, and the loading coefficient is preferably 0.4-0.5.
5. The method for optimizing the cutting parameters based on the rock hardness classification as claimed in claim 3, wherein when the geological conditions of rock surrounding rocks or rock components such as massive copper-containing pyrite ore, impregnated copper-containing pyrite ore and quartz are taken as main rock components or the overall structure firmness coefficient of the rock is 8-10, the improvement measures are as follows: two auxiliary eyes can be added at the upper part and the lower part of the original waist eye part at equal distance, and the medicine loading is normal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110424655.1A CN113188384B (en) | 2021-04-20 | 2021-04-20 | Cut parameter optimization method based on rock hardness classification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110424655.1A CN113188384B (en) | 2021-04-20 | 2021-04-20 | Cut parameter optimization method based on rock hardness classification |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113188384A true CN113188384A (en) | 2021-07-30 |
| CN113188384B CN113188384B (en) | 2023-03-03 |
Family
ID=76977525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110424655.1A Active CN113188384B (en) | 2021-04-20 | 2021-04-20 | Cut parameter optimization method based on rock hardness classification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113188384B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010066304A (en) * | 1999-12-31 | 2001-07-11 | 조영동 | Tunnel blasting method with large empty holes and pre-splitting of circular cut |
| CN104864782A (en) * | 2015-05-16 | 2015-08-26 | 周忠国 | Hard stone drift composite reinforcing vertical wedge cutting method |
| CN107631669A (en) * | 2017-10-24 | 2018-01-26 | 中国矿业大学 | A kind of Cut Blasting Optimization Design under large ground pressure |
| CN107843156A (en) * | 2016-09-20 | 2018-03-27 | 南京梅山冶金发展有限公司 | Gallery（Tunnel）The method of driving enhancing Cut Blasting efficiency |
| CN109211045A (en) * | 2018-10-09 | 2019-01-15 | 北方工业大学 | Quasi-conical energy-gathering cut construction method |
-
2021
- 2021-04-20 CN CN202110424655.1A patent/CN113188384B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010066304A (en) * | 1999-12-31 | 2001-07-11 | 조영동 | Tunnel blasting method with large empty holes and pre-splitting of circular cut |
| CN104864782A (en) * | 2015-05-16 | 2015-08-26 | 周忠国 | Hard stone drift composite reinforcing vertical wedge cutting method |
| CN107843156A (en) * | 2016-09-20 | 2018-03-27 | 南京梅山冶金发展有限公司 | Gallery（Tunnel）The method of driving enhancing Cut Blasting efficiency |
| CN107631669A (en) * | 2017-10-24 | 2018-01-26 | 中国矿业大学 | A kind of Cut Blasting Optimization Design under large ground pressure |
| CN109211045A (en) * | 2018-10-09 | 2019-01-15 | 北方工业大学 | Quasi-conical energy-gathering cut construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113188384B (en) | 2023-03-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106247877B (en) | A kind of hypervelocity symmetrically forces kerve method without cutting hole deviation line | |
| CN103527198B (en) | Cut a tight roof/top coal hydraulic fracture control method | |
| CN101338999B (en) | Method for blasting seepage enhancement for low infiltration sandrock -type uranium deposit | |
| CN102635388A (en) | Interaction permeability-increasing method of pre-splitting blasting and hydraulic cracking of coal seam | |
| CN113107490A (en) | Roof cutting and pressure relief method for high-ground-stress hard roof of coal mine | |
| CN104296609B (en) | Containing the controlled blasting method of different hardness rock stratum in Deep hole bench balsting | |
| CN113738363B (en) | High-low-level broken roof pressure relief method for continuous multilayer hard roof coal seam | |
| CN107120137A (en) | A kind of coal roadway tunneling is along seat earth Deephole pre-splitting blasting pumping method | |
| CN110879026A (en) | Excavation and cut blasting method suitable for high-plasticity low-strength rock tunnel | |
| CN110173238A (en) | The anti-reflection extraction of high seam three-dimensional roadway layout networking explosion thick gas method entirely | |
| CN110879027A (en) | Efficient energy-gathered blasting rapid tunneling method for half coal rock roadway | |
| CN113686215B (en) | Rock roadway large-diameter double-hole charging accurate time-delay hole-by-hole vertical cut blasting method | |
| CN108708722B (en) | Method for efficiently preventing rock burst of low-permeability coal seam | |
| CN114673497A (en) | Suspended roof treatment method based on hard roof direction control cracking | |
| CN113188391A (en) | Blasting method for soft rock roadway tunneling | |
| CN113188384B (en) | Cut parameter optimization method based on rock hardness classification | |
| CN114135288B (en) | Method for optimizing high-pressure water jet slotting pressure relief parameters of rock burst coal seam roadway | |
| CN114993125A (en) | Deep high-stress rock roadway medium-deep hole efficient cut blasting method based on ground stress induction effect | |
| CN104879128A (en) | Steep-dip ultra-thick coalbed mining technique based on top-coal advancing pre-detonation weakening | |
| CN114812314A (en) | Broaching and blasting hole distribution method for medium-length hole auxiliary cutting well | |
| CN112377191B (en) | Inclined sectioning and subsection caving method, stope structure and application | |
| CN108955434B (en) | Deep hole blasting and stoping method for large red mountain group iron ore | |
| CN1149101A (en) | Method for crushing voerhead coal | |
| Sun et al. | Case study: Mechanism and effect analysis of presplitting blasting in shallow extra-thick coal seam | |
| Zhang et al. | Roof‐Breaking Characteristics and Ground Pressure Behavior in Deep Jurassic Coal Seams: A Thick‐Plate Model and Field Measurements |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |