CN102777179A - Method for controlling mine power capacity source by using region power planning - Google Patents
Method for controlling mine power capacity source by using region power planning Download PDFInfo
- Publication number
- CN102777179A CN102777179A CN2012102259100A CN201210225910A CN102777179A CN 102777179 A CN102777179 A CN 102777179A CN 2012102259100 A CN2012102259100 A CN 2012102259100A CN 201210225910 A CN201210225910 A CN 201210225910A CN 102777179 A CN102777179 A CN 102777179A
- Authority
- CN
- China
- Prior art keywords
- fracture
- mine
- coal
- improvement
- mining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 90
- 238000013439 planning Methods 0.000 title claims abstract description 24
- 238000005065 mining Methods 0.000 claims abstract description 66
- 238000013461 design Methods 0.000 claims abstract description 13
- 238000009826 distribution Methods 0.000 claims description 57
- 239000003245 coal Substances 0.000 claims description 53
- 231100001261 hazardous Toxicity 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 238000000605 extraction Methods 0.000 claims description 12
- 238000010276 construction Methods 0.000 claims description 9
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 6
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 3
- 230000003116 impacting effect Effects 0.000 claims description 3
- 238000013316 zoning Methods 0.000 claims description 2
- 238000004458 analytical method Methods 0.000 abstract description 4
- 238000005094 computer simulation Methods 0.000 abstract description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 239000011435 rock Substances 0.000 description 17
- 238000011161 development Methods 0.000 description 10
- 238000011160 research Methods 0.000 description 7
- 238000004088 simulation Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 102000000584 Calmodulin Human genes 0.000 description 2
- 108010041952 Calmodulin Proteins 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000011439 discrete element method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Landscapes
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to a method for controlling a mine power capacity source by using region power planning. The optimal combination of mine design, actual mining and natural environment is achieved, and the problem of passive protection of current mine power is solved. By the aid of the method, results of the region power planning are used, an application method of the region power planning on mines is established, engineering technical schemes are obtained through combination of the region power planning, computer simulation and contrastive analysis are conducted, a best solution in which the ratio of power disasters is the lowest is chosen, the protection is conducted for hazard areas, the application condition of the region power planning is improved, the combination of the region power planning and mineral engineering is achieved, and active protection of mine power disasters is achieved.
Description
Technical field
The present invention relates to field of coal mining, relate in particular in having the mine of dynamic phenomenon, the method for application region power planning control mine motive force energy source.
Background technology
Coal industry belongs to traditional high risk industries, and various disaster accidents happen occasionally.In recent years, comprise that coal and gas are outstanding, the mine motive force phenomenon of bump and ore deposit shake becomes the principal element that threatens the colliery.According to statistics, in state-owned emphasis colliery, 724 places of China, highly gassy mine reaches 152 places, accounts for 21% of sum; Mine 154 places that coal and gas are outstanding account for 21.3% of sum, and reach global 1/3.In addition, have dangerous 47 places, colliery of bump in the large-scale colliery, China 910 places, account for 5.16% of sum.The ore deposit shake took place by the end of colliery, existing 102 place in 2003.
The average mining depth increasing velocity of the present mine of China is 8-12m/; Some mines of east have reached the deepening speed of 10-25m/ especially; This present situation has determined a considerable amount of mines of China perhaps to be about to get into the deep mining category; And the coal resources reserves that buried depth is verified below 1000 meters account for 53% of gross reserves.Compare with the superficial part exploitation; Deep rock mass structure and ambient stress are more complicated; Show as the disaster that " coal and gas are outstanding, bump and ore deposit shake " wait dynamic phenomenon to produce and raising on aggravation, the frequency on the intensity, will restrict industrial safe, the efficient and economic sustainable development of coal in China.
Therefore, in order to guarantee the further sustainable development of national economy, the restriction safety of coal mines that deep mining brings, dynamic phenomenon efficient and the intensification exploitation need be solved as soon as possible.This just requires to disclose the mechanism that dynamic disaster takes place, and the dynamic phenomenon generation area is carried out the danger measure of separating of prediction and reasonable applicationization.
The researcher is devoted to explore the dynamic phenomenon genesis mechanism for many years, impact tendentiousness index is confirmed and the forecast and the preventing and controlling of dynamic phenomenon; Propose multiple theoretical model, comprised rigidity theory, strength theory, energy theory, impact tendency theory and anamorphotic system unstability theory etc.
Summarize above-mentioned achievement in research; Think that one of main general character influence factor that dynamic phenomenon takes place is structure and the stress that produces thereof; And to the generation of dynamic phenomenon; At present main research work all concentrates on the condition of coal petrography as the material bodies unstability, and not when improving dynamic phenomenon and take place the source of energy carry out the initiatively research of control.Therefore, confirm the energy source (structure and stress distribution) of mine motive force phenomenon and propose prophylactico-therapeutic measures targetedly for realizing that initiatively control has great importance.The source problem that comes for energy; Russia и. м. figure Hough professor and и wear. and м. Ba Tujinna professor has set up the regional dynamic planing method during 1978-1979; Thinking influences the heterogeneity that the factor of mine motive force phenomenon is regional stress field and spatial distribution thereof; The mine motive force phenomenon mostly occurs in the region of high stress and stress gradient district, but the inhomogeneities that the when and where that partial interpretation mine motive force phenomenon takes place distributes receives the influence and the control of geological structure and geostatic stress.
The application of comprehensive regional power planning and current driving force phenomenon Study; Think that the regional dynamic planing method is for solving the possibility that provides of dynamic phenomenon from the source; But present application does not but realize this point, and has still ignored the important function that the engineering factor takes place dynamic phenomenon.
Summary of the invention
In view of this; The objective of the invention is to; The method of a kind of application region power planning control mine motive force energy source has been proposed; Use the result of regional dynamic planning to control the mine motive force source, instruct the mine that is in different phase to adopt reasonable manner to produce, thereby realize the active control of mine motive force disaster.
For realizing the foregoing invention purpose, the present invention adopts following technical scheme:
The method of a kind of application region power planning control mine motive force energy source wherein, said method comprising the steps of:
A, based on geological exploration data, use existing method to confirm the engineering scheme of exploitation;
B, employing regional dynamic planing method are carried out fault block identification and are divided with fracture;
C, the fault block and the fracture that mark off according to regional dynamic improve the engineering scheme that step a confirms, and then obtain a plurality of improved engineering schemes;
D, mine is carried out geostress survey;
The geostatic stress that e, the improved engineering scheme that obtains according to step c and steps d obtain adopts Computer Numerical Simulation software FLAC
3DStress distribution to engineering background is calculated, and obtains a plurality of improved engineering schemes corresponding respectively stress distribution situation and distribution;
F, the stress distribution that step e is obtained are divided, and the stress distribution value through contrasting each improved engineering scheme and the size of distribution are confirmed optimal case;
G, according to the optimal case that step f obtains, mark off the corresponding hazardous area of optimal case that step f obtains and threaten the district, and to the hazardous area with threaten the district to prevent and treat.
Further, in step c,, the improvement that has engineering scheme now is comprised the improvement of developing mode and the improvement of coal-mining method when mine is in design or first stage of construction;
When mine is in intermediary and later stages of construction, the improvement of existing engineering scheme is only comprised the improvement of coal-mining method.
Further, in step c, a plurality of improved engineering scheme that obtains is 3-6.Further, the size of contrast scenarios stress distribution value and distribution in step f, when the difference of maximum stress distribution value more than or equal to 5%, then should choose the minimum relatively scheme of maximum stress distribution value as optimal case; If the difference of maximum stress distribution value less than 5%, then should further compare the distribution of maximum stress distribution value, choose the minimum relatively scheme of distribution as optimal case.
Further, in step g, the hazardous area when threatening zoning to branch away, is reached 20% o'clock of total size in regional internal stress distribution value distribution from high to low, with this distribution of 20% as the hazardous area with threaten the district.
Further; In step g; When overbump ground pressure or dynamic phenomenon having taken place, according to the place of this bump or dynamic phenomenon generation, from the analog result of software, find out the corresponding stress distribution value in this place so at mine of using or adjacent mine; And will be worth threshold, and then mark off the danger and threat district as bump or dynamic phenomenon generation.
Further, the improvement of said developing mode comprises: exploitation liberation layer: for impacting mine, if the liberation layer is arranged, should exploit the liberation layer in advance, for the mine that is not impingement, the mine that does not perhaps have the liberation layer does not adjust; Direction of extraction: in this seam mining, the direction according to fracture adopts the direction of extraction parallel with rift direction, and when having the fracture that intersects, direction of extraction should be parallel with the main faults of intersecting in rupturing; Limit of mining: in this seam mining, in the fracture influence basin, stay the barrier pillar of establishing certain width not adopt; Mining sequence:, in the influence basin of fracture, should adopt unidirectional exploitation according to the fracture that marks off.
Further, the improvement of said coal-mining method comprises the improvement of roadway arrangement and the improvement of process for stoping, and the improvement of said roadway arrangement comprises: roadway shape according to the fracture that marks off, in the influence basin of fracture, is an arch with the tunnel top design; The tunnel size can be continued to use the tunnel size design of the engineering scheme that the first step confirms, does not adjust; The roadway support mode according to the fracture that marks off, in the influence basin of fracture, is taked flexible support; Coal column stays to be established, and when being provided with coal column in the engineering scheme that the first step is confirmed, according to the fracture that marks off, in the influence basin of fracture, fracture is arranged in coal column inside, with the reserved coal pillar of fracture as adjacent two work plane boundarys;
The improvement of said process for stoping comprises: fltting speed; For the work plane of Caving Coal, big mining height and separate zone production first layering, according to the fracture that marks off, in the influence basin of fracture; On the basis of former face propulsion speed, reduce fltting speed, for not adjusting of other situation; The back production support pattern, according to the fracture that marks off, in the influence basin of fracture, the preferred support apparatus with good retractility that adopts is such as hydraulic support; Roof control, according to the fracture that marks off, in the influence basin of fracture, adopting the tool post method still is that filling method supports the region of fracture.
Can know that by technique scheme the present invention uses the result of regional dynamic planning, set up the application process of regional dynamic planning in mine; The calmodulin binding domain CaM power planning proposes engineering scheme, and carries out the computer simulation stress distribution, selects the minimum preferred plan of dynamic disaster occurrence probability; And prevent and treat to the deathtrap, thereby improved the present condition for application of regional dynamic planning, through to thinking the improvement of technical factor; Control mine motive force energy source; Realized combining of regional dynamic planning and mining engineering, instructed the mine that is in different phase to adopt reasonable manner to produce, and the mine motive force disaster is carried out active prevent and treat.
Description of drawings
Fig. 1 is the flow chart of a kind of specific embodiment of the present invention.
The specific embodiment
Be example with the practical application of the method for the invention in coal production below, the present invention is elaborated.Yet one skilled in the art would recognize that therefore the present invention does not receive any restriction.
As shown in Figure 1, the method for a kind of application region power planning control mine motive force energy source that the present invention proposes may further comprise the steps:
The first step according to geological exploration data, uses existing method to confirm the engineering scheme of exploitation.
Mining need be considered natural cause and engineering factor, and wherein natural cause comprises fracture division, top board lithology, coal bed texture, seam inclination, coal seam thickness and mining depth; The engineering factor comprises developing mode and coal-mining method, and the developing mode further relates to exploitation liberation layer, direction of extraction, limit of mining and mining sequence; Coal-mining method further relates to roadway arrangement and process for stoping, and wherein roadway arrangement comprises again that roadway shape, tunnel size, roadway support mode and coal column stay and establishes, and process for stoping comprises fltting speed, back production support pattern and roof control simultaneously.
On the basis of geological exploration data, the engineering scheme that uses existing method to propose exploitation is well known to those skilled in the art.For example, follow following principle and propose the developing mode: 1. carry out the technical policy of the relevant coal industry of country, guaranteeing to produce under the reliable and safe precondition; Reduce the development engineering amount; Especially reduce the initial stage construction, practice thrift capital investment, accelerate mine construction; 2. the reasonable centralized developing is disposed, and simplifies production system, avoids producing and disperses, and accomplishes reasonable centralized production; 3. reasonable development resource reduces Coal Loss; 4. set up perfect production system, make main roadway remain on good practicality and maintenance state; 5. the technical level and the supply of equipment situation that adapt to current country, and for employ new technology, new technology, development mining mechanization, comprehensive mechanization, automation create conditions.
For example, mainly select coal-mining method according to geologic(al) factor and Technological Economy factor.Particularly, seam inclination and variation directly influence the selection of coal breakage method, fortune coal mode, stope support and the goaf processing etc. of coal-face, also directly influence the various Determination of Parameters of roadway arrangement, transportation, ventilation and coal-mining method.Coal-mining method strengthens with seam inclination and is tending towards difficult gradually; Coal seam thickness influences the selection of stope Surrounding Rock Control Technology, can equipment play one's part to the full and techno-economic effect; Complete thick coal-mining method is once adopted in the common employing of girdle and medium-thickness seam; High seam and super high seam can adopt separate zone production, also can adopt big mining height or coal caving mining method; The stability of the soft or hard degree of coal seam and country rock lithology reflection coal seam characteristic and architectural feature, country rock etc. directly have influence on the selection of coal-cutting machinery, coal winning technology and goaf processing method.Coal seam and rock property also directly influence roadway arrangement and maintaining method, also influence various Determination of Parameters in exploiting field, panel or the zone; Construct and can adopt piece section size for coal geology,, exploitation piece section bigger coal seam stable when mode of occurence helps combining adopts; Mode of occurence is unstable, and seam construction should be adopted with general than complicacy; Strike fault should adopt strike long wall method for a long time in the exploitation piece section; Seam inclination is little, and inclined fault for a long time, should adopt inclined longwell mining method; For the spontaneous combustion tendency of the property of water-bearing, gas emission and the coal in coal seam, when coal seam and country rock water content are big, need be before mining drainage in advance, or in the coal mining process, arrange draining and draining system.And the coal seam contains gas amount when big, arrange the tunnel of preparatory gas pumping, and simultaneously, coal-face ventilates and should take measures.The spontaneous combustion tendency in coal seam and ignition phase directly influence roadway arrangement, roadway maintenance method and coal-face direction of propulsion, and whether decision need be taked to prevent fires the grouting measure or select the method for collecting coal by the means of filling for use.In addition, also has economic and technological factor.
More than be this area common technique, just no longer detail here.
In second step, adopt the regional dynamic planing method that the production zone rock body quality of mine is carried out fault block identification and divide with fracture.For example; According to public publication document " geology dynamic division " (ISBN978-1-5020-3540-2) in the regional dynamic planing method rock body quality of mine carried out fault block identification divide with fracture; The fault block of rock body quality of mine can utilize morphostructural analysis to find out, is that the basis is divided with fault block along the intensity that moves both vertically of the fault zone system that is in different depth, different times.
In the 3rd step, the fault block and the fracture that mark off according to regional dynamic improve the definite engineering scheme of the first step, obtain a plurality of improved engineering schemes, such as 3-6.
Yet in existing mining activity, the fracture according to geological prospecting goes out generally is used for the division of border, field with "nine squares" or section boundary, and can't grasps in advance for the growing state of small-sized fracture that influences work plane and fracture.And the application region power planning can be found out potential fault structure, this with geological prospecting on the fracture that obtains have different character, have the characteristics of growth, can be described as the fracture of living, belong to deriving of big fracture structure.
Because natural cause is an objective reality, can find out through geological prospecting and regional dynamic planing method, belongs to constant; And the engineering factor can be improved through design in theory; In actual production, need to combine the residing concrete stage of mine to take in: when mine is in design or first stage of construction (is the development system; Comprise pit shaft, shaft station, main main haulage roadway and the main big lane of return air; Do not accomplish as yet); The developing mode is adjustable, and then whole engineering factor (developing mode and coal-mining method) is a variable factor, and therefore the improvement to engineering scheme should comprise the improvement of developing mode and the improvement of coal-mining method; When mine is in intermediary and later stages (system that promptly opens up accomplishes, and is for example arranging exploiting field or preparatory working) of construction, whole developing mode forms; In the time of can't adjusting, then developing mode is a constant, at this moment; The adjustment of coal-mining method is more or less freely; Therefore with coal-mining method all the time as variable factor, promptly, the improvement of engineering scheme is only comprised the improvement of coal-mining method to forming the mine of developing system.
Therefore; For instructing the mine that is in different phase, the result who uses regional dynamic planning adopt reasonable manner to produce; Control mine motive force energy source; Thereby realize the active control of mine motive force disaster, also need calmodulin binding domain CaM power planning achievement that engineering scheme is further improved.For convenience, the fracture of hereinafter mentioning all refers to the fracture that regional dynamic marks off.
Particularly, when improving the developing mode, take into full account the influence of the fracture that regional dynamic marks off, make main roadway remain on good practicality and maintenance state.Wherein, the improvement of developing mode comprises: (1) exploitation liberation layer: for impacting mine, if the liberation layer is arranged, should exploit the liberation layer in advance, for the mine that is not impingement, perhaps not have the mine of liberation layer and can not do improvement; (2) direction of extraction: in this seam mining; Direction according to fracture; Adopt the direction of extraction parallel with rift direction, when having the fracture that intersects, direction of extraction should be parallel with the main faults (being the maximum fracture of influence basin in these fractures) of intersecting in rupturing; To avoid in driving or the recovery process mining induced stress and breaking stress generation stack; (3) limit of mining: in this seam mining, should be according to the fracture that marks off, in the influence basin of fracture; Stay the barrier pillar of establishing certain width not adopt, avoid causing the rising significantly of work plane mine pressure, and bump takes place; Wherein, Drawing the fracture influence basin according to fracture is this area routine techniques, and for example, those skilled in the art can draw the fracture influence basin according to computer simulation or laboratory simulation; Concrete simulation process is well known to those skilled in the art, and just no longer details here; (4) mining sequence: according to the fracture that marks off, in the influence basin of fracture, should adopt unidirectional exploitation, to avoid the occurring situation of exploitation in opposite directions in the double-vane exploiting field.All things considered, in this seam mining, direction of extraction, limit of mining and the mining sequence confirmed should be parallel with the tectonic stress that breaks to form, and avoid occurring superposition phenomenon.
Equally; When improving coal-mining method; Should take into full account the characteristics that regional dynamic marks off fracture,, mainly still be inclined to development along the trend in coal seam such as the azimuth of fracture growth; Avoid or reduce the engineering factor, thereby avoid causing the motion of overlying rock that huge power resources are provided because of rupture activity or growth for the facilitation of fracture growth of living.
Characteristics according to regional dynamic planning fracture are analyzed; Confirm that fracture is mainly derived from the still tendency derivation along the coal seam along bearing in the mining area; Thereby confirm still to be inclined to the layout tunnel along bearing; For example; If fracture has a tendency development characteristic along the coal seam, for fear of or reduce work plane and break to form the stress stack with division, can confirm to adopt inclined longwell mining method, tool post formula, mining height is once adopted coal-mining methods such as thick entirely, incline cut and fill stoping inclination longwell descendingly collapses, the up filling of incline cut and fill stoping longwell, Caving Coal longwell greatly; If fracture has the development characteristic along bearing, can adopt strike long wall method, tool post formula, big mining height once to adopt thick entirely, incline cut and fill stoping and move towards coal-mining methods such as longwell descendingly collapses, the up filling of incline cut and fill stoping longwell, Caving Coal, horizontal fragmentation Caving Coal.
The improvement of coal-mining method comprises the improvement of roadway arrangement and the improvement of process for stoping.Particularly, the improvement of roadway arrangement comprises: (1) roadway shape: according to the fracture that marks off, in the influence basin of fracture, be arch with the tunnel top design preferably; (2) tunnel size: the tunnel size design that can continue to use the definite engineering scheme of the first step; (3) roadway support mode:, in the influence basin of fracture, preferably take flexible support, such as the supporting of anchor rete cord according to the fracture that marks off; (4) coal column stays and establishes: when being provided with coal column in the engineering scheme that the first step is confirmed, according to the fracture that marks off, in the influence basin of fracture, preferably fracture is arranged in coal column inside, promptly stays as the coal column of adjacent two work plane boundarys with fracture and establish.So both can improve the rate of extraction, can reduce the influence of fracture through rational pillar size again actual mining.
Particularly; The improvement of process for stoping comprises: (1) fltting speed: for the work plane of Caving Coal, big mining height and separate zone production first layering; According to the fracture that marks off, in the influence basin of fracture, should on the basis of former face propulsion speed, reduce fltting speed; As be reduced to former face propulsion speed 50% or below, other can not do improvement; (2) back production support pattern: according to the fracture that marks off, in the influence basin of fracture, the preferred support apparatus with good retractility that adopts is such as hydraulic support; (3) roof control: according to the fracture that marks off, in the influence basin of fracture, can adopt tool post method or filling method that the region of fracture is supported, be mainly used in and avoid the development of overlying rock fracture to cause the top board unstability and produce huge power resources.
Like this, through the improvement of developing mode and the improvement of coal-mining method, can on the basis of the engineering scheme that the first step is confirmed, obtain a plurality of improved engineering schemes.
Preferably; After obtaining a plurality of said improved engineering schemes according to the 3rd step, can also be through the feasibility of the said improved engineering scheme of indoor analog simulation experimental verification, for example; To the high inclination-angle high seam; Adopt the inclination longwell still to move towards longwell, adopt separate zone production or full-seam mining, coal column stays the reasonability of establishing and the effects such as difference management of top board, with the infeasible scheme of preliminary removal.
The 4th step, mine is carried out geostress survey, geostress survey is that the geostatic stress state of measuring point is directly observed, data measured will provide the basis for further experiment.The method that exists comprises multiple, separates division, hydraulic fracturing etc. like resultant stress.Wherein stress relief method is the method that generally adopts both at home and abroad, should carry out in the place of the definite reflecting regional rock mass stress of ability.Resultant stress is separated division: make the measuring point rock mass break away from the method for geostatic stress effect fully, the method that adopts cover to bore usually realizes the complete stress relieving of trepanning rock core, therefore also claims the trepanning stress relief method.In actual measurement, require to guarantee that measuring point is positioned at the stress of primary rock district that does not receive the rock mass excavation disturbance; The aperture central part that guarantees test is in plane strain state.
In the 5th step, improved engineering scheme and the 4th step that the 3rd step was obtained obtain geostatic stress as primary condition, adopt Computer Numerical Simulation software FLAC
3DStress distribution to engineering background is calculated, and obtains the corresponding respectively stress distribution situation of different engineering schemes.FLAC
3D(Fast Lagrangian Analysis of Continua in 3Dimensions) is the three-dimensional explicit finite difference program by American I tasca Consulting Group Inc exploitation.FLAC
3DResearch object is divided into the multiaspect cell cube grid that can be out of shape and move, adopts Lagrangian difference method to find the solution, its basic principle is similar with distinct element method with algorithm, and the utilization modal displacement condition of continuity can be carried out analysis on Large Deformation to continuous media.This software can be used for the research of stability of slope, pit mining design, tunnelling design and aspects such as supporting, earthquake engineering and rock burst research and digging large deformation.Adopt FLAC
3DWhen carrying out numerical simulation; Will be according to the target of confirm analyzing, set up model, compile the problem of finding the solution detailed data, carry out model computing, analyze operation result; Use simulation tool always because this software is this area, so its physical simulation process details no longer just.
In the 6th step,,, confirm optimal case through comparing scenarios hazardous area and the stress distribution value that threatens the district and the size of distribution based on the stress distribution situation that the 5th step obtained.When if stress distribution value and distribution do not satisfy simultaneously; At this moment the size that at first compares the stress distribution value; Based on mining, if the difference of maximum stress distribution value, then should be chosen the minimum relatively scheme of maximum stress distribution value more than or equal to 5% as optimal case; If the difference of maximum stress distribution value less than 5%, then should further compare the distribution of maximum stress distribution value, choose the relatively little scheme of distribution as optimal case, thus control mine motive force energy source.
In the 7th step, to the optimal case that the 6th step obtained, mark off corresponding hazardous area of optimal case and threat district, and prevent and treat with threatening to distinguish to the hazardous area.According to existing research conclusion; Dynamic phenomenon generally occurs in the hazardous area, threatens the district and does not have the hazardous area and threat district (region of high stress and stress gradient district) in the hazardous area (region of high stress, stress gradient district and low stress area, i.e. " three districts "), according to this area experience achievement; Reach 20% o'clock of total size in regional internal stress distribution value distribution from high to low; This distribution of 20% is distinguished with threatening as the hazardous area, and be directed against the hazardous area and threaten the district to carry out mine motive force diaster prevention and control, concrete means of prevention can be the means of prevention that this area is used always; Thereby make control more targeted, and can before disaster takes place, prevent and treat.
Certainly; If at mine of using or adjacent mine overbump ground pressure or dynamic phenomenon have taken place; The place that takes place according to this bump or dynamic phenomenon so; Can from the analog result of software, find out the corresponding stress distribution value in this place, and will be worth threshold, thereby mark off the danger and threat district more scientifically and rationally as bump or dynamic phenomenon generation.
Claims (8)
1. the method for an application region power planning control mine motive force energy source is characterized in that, said method comprising the steps of:
A, based on geological exploration data, use existing method to confirm the engineering scheme of exploitation;
B, employing regional dynamic planing method are carried out fault block identification and are divided with fracture;
C, the fault block and the fracture that mark off according to regional dynamic improve the engineering scheme that step a confirms, and then obtain a plurality of improved engineering schemes;
D, mine is carried out geostress survey;
The geostatic stress that e, the improved engineering scheme that obtains according to step c and steps d obtain adopts Computer Numerical Simulation software FLAC
3DStress distribution to engineering background is calculated, and obtains a plurality of improved engineering schemes corresponding respectively stress distribution situation and distribution;
F, the stress distribution that step e is obtained are divided, and the stress distribution value through contrasting each improved engineering scheme and the size of distribution are confirmed optimal case;
G, according to the optimal case that step f obtains, mark off the corresponding hazardous area of optimal case that step f obtains and threaten the district, and to the hazardous area with threaten the district to prevent and treat.
2. the method for claim 1 is characterized in that, in step c, when mine is in design or first stage of construction, the improvement that has engineering scheme now is comprised the improvement of developing mode and the improvement of coal-mining method;
When mine is in intermediary and later stages of construction, the improvement of existing engineering scheme is only comprised the improvement of coal-mining method.
3. method as claimed in claim 2 is characterized in that, in step c, a plurality of improved engineering scheme that obtains is 3-6.
4. the method for claim 1; It is characterized in that; The size of contrast scenarios stress distribution value and distribution in step f, when the difference of maximum stress distribution value more than or equal to 5%, then should choose the minimum relatively scheme of maximum stress distribution value as optimal case; If the difference of maximum stress distribution value less than 5%, then should further compare the distribution of maximum stress distribution value, choose the minimum relatively scheme of distribution as optimal case.
5. the method for claim 1; It is characterized in that, in step g, when the hazardous area is branched away with the threat zoning; Reach 20% o'clock of total size in regional internal stress distribution value distribution from high to low, with this distribution of 20% as the hazardous area with threaten the district.
6. the method for claim 1; It is characterized in that, in step g, when overbump ground pressure or dynamic phenomenon having taken place at mine of using or adjacent mine; The place that takes place according to this bump or dynamic phenomenon so; From the analog result of software, find out the corresponding stress distribution value in this place, and will be worth threshold, and then mark off the danger and threat district as bump or dynamic phenomenon generation.
7. method as claimed in claim 2 is characterized in that, the improvement of said developing mode comprises: exploitation liberation layer: for impacting mine; If the liberation layer is arranged; Should exploit the liberation layer in advance, for the mine that is not impingement, the mine that does not perhaps have the liberation layer does not adjust; Direction of extraction: in this seam mining, the direction according to fracture adopts the direction of extraction parallel with rift direction, and when having the fracture that intersects, direction of extraction is parallel with the main faults of intersecting in rupturing; Limit of mining: in this seam mining, in the fracture influence basin, stay the barrier pillar of establishing certain width not adopt; Mining sequence:, in the influence basin of fracture, should adopt unidirectional exploitation according to the fracture that marks off.
8. method as claimed in claim 2 is characterized in that, the improvement of said coal-mining method comprises the improvement of roadway arrangement and the improvement of process for stoping; The improvement of said roadway arrangement comprises: roadway shape; According to the fracture that marks off, in the influence basin of fracture, be arch with the tunnel top design; The tunnel size is continued to use the tunnel size design of the engineering scheme that the first step confirms, does not adjust; The roadway support mode according to the fracture that marks off, in the influence basin of fracture, is taked flexible support; Coal column stays to be established, and when being provided with coal column in the engineering scheme that the first step is confirmed, according to the fracture that marks off, in the influence basin of fracture, fracture is arranged in coal column inside;
The improvement of said process for stoping comprises: fltting speed; For the work plane of Caving Coal, big mining height and separate zone production first layering, according to the fracture that marks off, in the influence basin of fracture; On the basis of former face propulsion speed, reduce fltting speed, do not adjust for other situation; The back production support pattern according to the fracture that marks off, in the influence basin of fracture, adopts the support apparatus with good retractility; Roof control according to the fracture that marks off, in the influence basin of fracture, adopts tool post method or filling method that the region of fracture is supported.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210225910.0A CN102777179B (en) | 2012-06-29 | 2012-06-29 | Method for controlling mine power capacity source by using region power planning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210225910.0A CN102777179B (en) | 2012-06-29 | 2012-06-29 | Method for controlling mine power capacity source by using region power planning |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102777179A true CN102777179A (en) | 2012-11-14 |
| CN102777179B CN102777179B (en) | 2014-08-20 |
Family
ID=47122268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210225910.0A Active CN102777179B (en) | 2012-06-29 | 2012-06-29 | Method for controlling mine power capacity source by using region power planning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102777179B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156110A (en) * | 2015-07-03 | 2015-12-16 | 陕西煤业化工技术研究院有限责任公司 | Dynamic disaster mine district roadway structure and method for developing same |
| CN105888666A (en) * | 2016-04-12 | 2016-08-24 | 东北大学 | High-stress induced blasting ore caving method for deep stope |
| CN106761746A (en) * | 2016-11-29 | 2017-05-31 | 安徽理工大学 | A kind of method for determining island working face reserved coal pillar rational width |
| CN108590656A (en) * | 2018-04-02 | 2018-09-28 | 西安科技大学 | A kind of disaster-ridden member coupling hard-to-recovery reserve decoupling recovery method |
| CN113027529A (en) * | 2021-03-22 | 2021-06-25 | 中国矿业大学 | Stope impact risk assessment method based on numerical inversion |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2639465B2 (en) * | 1990-10-26 | 1997-08-13 | 東洋運搬機株式会社 | Mining simulation system |
| CN101787898A (en) * | 2010-02-22 | 2010-07-28 | 中国科学院力学研究所 | Coal and gas outburst forecasting method |
| CN102102533A (en) * | 2010-12-31 | 2011-06-22 | 中国矿业大学 | Method for forecasting real-time measurement of spatial geometrical information of coal rock dynamic disaster |
-
2012
- 2012-06-29 CN CN201210225910.0A patent/CN102777179B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2639465B2 (en) * | 1990-10-26 | 1997-08-13 | 東洋運搬機株式会社 | Mining simulation system |
| CN101787898A (en) * | 2010-02-22 | 2010-07-28 | 中国科学院力学研究所 | Coal and gas outburst forecasting method |
| CN102102533A (en) * | 2010-12-31 | 2011-06-22 | 中国矿业大学 | Method for forecasting real-time measurement of spatial geometrical information of coal rock dynamic disaster |
Non-Patent Citations (6)
| Title |
|---|
| 兰天伟等: "地质动力区划预测煤与瓦斯突出", 《中国安全科学学报》, vol. 20, no. 3, 31 March 2010 (2010-03-31), pages 46 - 49 * |
| 吴桂义等: "基于GIS的矿井井下煤与瓦斯突出预测***", 《现代矿业》, 31 May 2009 (2009-05-31), pages 168 - 170 * |
| 宋卫华等: "矿井煤与瓦斯突出危险性预测的模式识别研究", 《安全与环境学报》, vol. 6, 31 July 2006 (2006-07-31), pages 90 - 92 * |
| ***等: "地质结构的应力分区与煤瓦斯突出预测分析", 《岩石力学与工程学报》, vol. 19, no. 4, 31 July 2000 (2000-07-31), pages 462 - 464 * |
| 徐学锋等: "地质动力区划在煤与瓦斯突出研究中的应用", 《辽宁工程技术大学学报》, vol. 22, 31 August 2003 (2003-08-31), pages 25 - 27 * |
| 陈学华等: "地质动力区划与矿井动力现象区域预测", 《煤矿开采》, vol. 8, no. 2, 30 June 2003 (2003-06-30), pages 55 - 57 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156110A (en) * | 2015-07-03 | 2015-12-16 | 陕西煤业化工技术研究院有限责任公司 | Dynamic disaster mine district roadway structure and method for developing same |
| CN105888666A (en) * | 2016-04-12 | 2016-08-24 | 东北大学 | High-stress induced blasting ore caving method for deep stope |
| CN106761746A (en) * | 2016-11-29 | 2017-05-31 | 安徽理工大学 | A kind of method for determining island working face reserved coal pillar rational width |
| CN108590656A (en) * | 2018-04-02 | 2018-09-28 | 西安科技大学 | A kind of disaster-ridden member coupling hard-to-recovery reserve decoupling recovery method |
| CN108590656B (en) * | 2018-04-02 | 2019-10-01 | 西安科技大学 | A kind of disaster-ridden member coupling hard-to-recovery reserve decoupling recovery method |
| CN113027529A (en) * | 2021-03-22 | 2021-06-25 | 中国矿业大学 | Stope impact risk assessment method based on numerical inversion |
| CN113027529B (en) * | 2021-03-22 | 2022-03-01 | 中国矿业大学 | Stope impact risk assessment method based on numerical inversion |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102777179B (en) | 2014-08-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108894787B (en) | Leave the pressure break release method of ore pillar stress concentration in Overburden gob area | |
| CN111270987B (en) | Method for accurately preventing and controlling rock burst in remote area under coal mine | |
| CN104763432B (en) | A kind of method that high stress tunnel country rock release controls large deformation | |
| CN103362519B (en) | Safe and quick coal roadway tunneling method | |
| CN104712358A (en) | Coal seam group with high gas content pressure relief and co-mining method based on gob-side entry retaining of working face of first mining total rock pressure relief | |
| CN107227976B (en) | A kind of underground pressure management method suitable for underground mine deep mining | |
| CN112879011B (en) | Method for controlling height of water guide crack zone by hard overburden rock pre-cracking weakening under aquifer | |
| CN102777179B (en) | Method for controlling mine power capacity source by using region power planning | |
| AU2021106168A4 (en) | High-gas Coal Seam Group Pressure Relief Mining Method Based on Gob-side Entry Retaining in the First Mining Whole Rock Pressure Relief Working Face | |
| CN107916934A (en) | Level pillar unstability critical thickness decision method under a kind of more stage casings while exploitation pattern | |
| CN107145684B (en) | Underground rock mass engineering ground pressure management and control method | |
| CN103557001A (en) | Low-section-height drift-pillar-free shrinkage-stoping, subsequent-filling and mining method | |
| Liu et al. | Stability analysis of gentle dip thick ore body mining based on the integration of SURPAC-FLAC3D | |
| Guofeng et al. | Deformation mechanism and excavation process of large span intersection within deep soft rock roadway | |
| Wei et al. | Research on mining fracture of overburden in close distance multi-seam | |
| Tian et al. | Stability control of a roadway surrounding rock during the cutting and pressure relief of a coal‐bearing roof at a shallow mining depth | |
| Trubetskoy et al. | Geomechanical service in mining under gas-and-dynamic phenomena | |
| CN106285777B (en) | The method that flood mine mineral building discharges water in advance | |
| CN115234287A (en) | Energy-gathered blasting pressure-relief permeability-increasing method for top plate of soft coal seam in reverse fault structural area | |
| CN211623426U (en) | Safe and efficient hidden broken residual ore mining structure based on extra-pulse mining and quasi-exploration mining combination | |
| CN107762505A (en) | Based on the method that upward horizontal slice mining with stowing is used in exploitation of mineral resources | |
| Kurlenya et al. | Effect of partial water flooding on the stress-strain state of the crown pillar in the Aikhal Mine | |
| Song et al. | Study on roadway parameters of broken compound roof of gently inclined thick coal seam | |
| CN110043259B (en) | Regional stoping process for composite top working face with large mining depth and high mining height | |
| Yao | Numerical Simulation Study on The Effect of Isolated Coal Pillar Width on The Subsidence Law of Deep Mining |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |