CN102705010B - Method for analyzing work surface outburst danger evaluation index system - Google Patents
Method for analyzing work surface outburst danger evaluation index system Download PDFInfo
- Publication number
- CN102705010B CN102705010B CN201210176845.7A CN201210176845A CN102705010B CN 102705010 B CN102705010 B CN 102705010B CN 201210176845 A CN201210176845 A CN 201210176845A CN 102705010 B CN102705010 B CN 102705010B
- Authority
- CN
- China
- Prior art keywords
- index
- outburst
- gas
- danger
- work plane
- 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.)
- Active
Links
- 238000011156 evaluation Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000002265 prevention Effects 0.000 claims abstract description 22
- 230000008859 change Effects 0.000 claims abstract description 16
- 239000003245 coal Substances 0.000 claims description 45
- 239000011435 rock Substances 0.000 claims description 30
- 238000004458 analytical method Methods 0.000 claims description 22
- 238000003325 tomography Methods 0.000 claims description 16
- 238000010200 validation analysis Methods 0.000 claims description 12
- 238000000605 extraction Methods 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 10
- 238000007689 inspection Methods 0.000 claims description 10
- 238000005553 drilling Methods 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000003795 desorption Methods 0.000 claims description 4
- 230000035699 permeability Effects 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 201000004569 Blindness Diseases 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000000205 computational method Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000003755 preservative agent Substances 0.000 description 3
- 230000002335 preservative effect Effects 0.000 description 3
- 238000010187 selection method Methods 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000002547 anomalous effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The invention discloses a method for analyzing a working face outburst danger evaluation index system, which comprises the following steps of firstly, collecting gas occurrence data of a mine stope; then comprehensively analyzing the data to form a risk evaluation index for judging the outstanding risk of the working face, and storing the risk evaluation index in a criterion index library; finally, processing the danger evaluation index and a preset evaluation index critical value to determine the danger level of the working face section range; and sending out early warning according to the danger level. On the basis of researching the occurrence rule of gas on a mine stope face, dynamic evaluation indexes of the outburst danger of the working face are divided into a gas type, a geological type, a stress type and an outburst prevention measure type, the change rule of each evaluation index is mastered and intelligently analyzed in real time, the outburst evaluation result of the working face is comprehensively formed, outburst danger early warnings of different levels are automatically generated, and the outburst danger early warnings can be updated in real time along with the change of outburst prediction evaluation indexes; the blindness of outburst prevention work is reduced, outburst prevention engineering cost is saved, and the safety production of a mine is guaranteed.
Description
Technical field
The present invention relates to a kind of method of forecasting coal and Gas Outburst, particularly a kind of method of on-the-spot forecasting coal and Gas Outburst.
Background technology
Coal and Gas Outburst are a kind of extremely complicated dynamic phenomenons, prevent the generation of coal and Gas Outburst, be one and urgently need the technical barrier solving, at present, mainly be aimed at the regional prediction in mine, exploiting field meaning both at home and abroad, and mostly be static evaluation result, can not be in real time, dynamically to carrying out hazard assessment analysis from design, driving to the whole process of back production within the scope of work plane section, be difficult to help for staff provides decision-making in time; Lack the ways and means of effective fundamentals of management information data data, staff can not obtain information needed quickly and easily; The data such as existing gas, geology, outburst prevention measures are expressed mainly with written form, lack effective expression and analysis to spatial data, can not reflect vivid, intuitively, truly relevant information.
Outstanding prediction methods, countries in the world be all based upon gas, press and the basis of comprehensive supposition on the ANOMALOUS VARIATIONS utilizing the intensity, stress in coal seam, occur before outstanding containing gas situation and they, judge in time the outburst dangerous level in coal seam.Mainly give prominence to technology and obtain good result, but also exist difficulty in implementation procedure around " taking region quaternity as master, local quaternity are as auxiliary " " two quaternities " integrated control in China.
Therefore be badly in need of a kind of more exactly, determine in real time the method for danger classes of outburst area.
Summary of the invention
In view of this, technical problem to be solved by this invention be to provide a kind of more exactly, determine in real time the method for danger classes of outburst area.
The object of the present invention is achieved like this:
A kind of work plane outburst danger assessment indicator system analytical method provided by the invention, comprises the following steps:
S1: gather mine stope gas bearing data; And by gas bearing transfer of data to data processor;
S2: after described gas bearing data are analyzed by data processor processes, form and judge the risk evaluation indexes of work plane outburst danger, and risk evaluation indexes is stored in to criterion index storehouse;
S3: risk evaluation indexes and default evaluation index threshold are processed to the danger classes of determining work plane section scope;
S4: send early warning according to danger classes;
S5: repeating step S1-S4 upgrades the risk evaluation indexes of different operating face.
Further, described risk evaluation indexes comprises gas class index, Geology index, stress class index and outburst prevention measures class index; The ratio that described gas class index, Geology index, stress class index and outburst prevention measures class adopt respectively work at present face to gather gas bearing data measured value and preset critical is separately determined outburst danger opinion rating; Described gas class index, Geology index, stress class index and outburst prevention measures class index merge the danger classes that generates whole region.
Further, the index of described gas class index comprises region effect inspection index, area validation index and Gas index;
Described region effect inspection index, by obtaining residual gas pressure P and gas bearing capacity W, is then determined with the proportionate relationship of its critical reference value respectively;
Described area validation index is by obtaining overall target D, K value, drilling cuttings desorption of mash gas index △ h2 or K1 value, and coal powder quantity of bore S value, the drilling gas initial velocity q that gushes out, R value index, then determines with the proportionate relationship of its critical reference value respectively;
Described Gas index is determined by the Gas concentration obtained and the proportionate relationship of gas density threshold.
Further, described Geology index comprises Coal Seam Thickness Change rate index, soft lift height index, tomography influence basin index, karst collapse col umn influence basin index, igneous rock intrusion scope index, dirt band pinching place index and rock property and thickness index;
Described Coal Seam Thickness Change rate index is passed through the average of whole thick measuring points of coal within the scope of work plane section as the thick rate of change of benchmark coal, assigning degrees of hazard changing value;
Described soft lift height index is determined by the proportionate relationship of soft lift height and threshold within the scope of work plane section;
The measured value of buffer area and the proportionate relationship of threshold that described tomography influence basin index forms according to tomography cross surface line upper lower burrs are determined;
Described karst collapse col umn influence basin index is carried out danger classes according to actual measurement karst collapse col umn border measured value and is determined;
Described igneous rock intrusion scope index is carried out danger classes according to magmatic rock intrusion border, district measured value and is determined;
Described dirt band pinching place index is carried out danger classes according to dirt band pinching place border measured value and is determined;
Described rock property and thickness index are determined outburst danger grade according to the proportionate relationship of the low country rock thickness measured value of gas permeability and threshold.
Further, described geostatic stress class index is determined by the solid coefficient of measuring coal.
Further, the danger classes of described work plane section scope is to determine according to the proportionate relationship of risk evaluation indexes and default evaluation index threshold.
Further, described outburst prevention measures class index comprises topping protection domain index, extraction measure implementation status index and local measure implementation status index;
Described topping protection domain index is determined according to the relation between the release angle of topping protection domain measured value and seam inclination;
Described extraction measure implementation status index basis and local measure implementation status index are taken out drainage radius and are determined effective range and the blank tape ratio of measure boring at measure where-used with the position relationship of measure where-used according to the perforate parameter of measure boring, measure boring;
Described perforate parameter comprises high, the azimuth of boring perforate, drift angle and inclination angle.
The invention has the advantages that: the present invention is on the basis of research mine stope Gas Preservative Law, work plane outburst danger dynamic assessment index is divided into gas class, Geology, stress class and outburst prevention measures class, grasp in real time the also Changing Pattern of the every evaluation index of intellectual analysis, the comprehensive outstanding evaluation result of work plane that forms, automatically generate the outburst danger early warning of different brackets, and can be along with the variation real-time update of outburst prediction evaluation index; Work plane outburst danger assessment indicator system provided by the invention can be more exactly, determine in real time grade and the scope of outburst area, for outburst hazard prediction provides multiple means, contribute to more reasonably formulation and implementation outburst prevention measures, the blindness that reduces protrusion-dispelling work, saving protrusion-dispelling engineering cost, ensure the safety in production of mine.
Other advantage of the present invention, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on will be apparent to those skilled in the art to investigating below, or can be instructed from the practice of the present invention.The objects and other advantages of the present invention can be passed through manual below, claims, and in accompanying drawing, specifically noted structure realizes and obtains.
Brief description of the drawings
In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail, wherein:
The work plane outburst danger assessment indicator system analysis process figure that Fig. 1 provides for the embodiment of the present invention;
The work plane outburst danger assessment indicator system analytical system figure that Fig. 2 provides for the embodiment of the present invention;
The schematic diagram of the topping work plane that Fig. 3 provides for embodiment of the present invention protection domain along inclined direction;
Topping work plane beginning line that Fig. 4 provides for the embodiment of the present invention, adopt the schematic diagram of the influence basin of principal vertical line and coal column.
Detailed description of the invention
Below with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail; Should be appreciated that preferred embodiment is only for the present invention is described, instead of in order to limit the scope of the invention.
The work plane outburst danger assessment indicator system analysis process figure that Fig. 1 provides for the embodiment of the present invention; The work plane outburst danger assessment indicator system analytical system figure that Fig. 2 provides for the embodiment of the present invention; the schematic diagram of the topping work plane that Fig. 3 provides for embodiment of the present invention protection domain along inclined direction; topping work plane beginning line that Fig. 4 provides for the embodiment of the present invention, adopt the schematic diagram of the influence basin of principal vertical line and coal column; as shown in the figure: a kind of work plane outburst danger assessment indicator system analytical method provided by the invention, comprises the following steps:
S1: gather mine stope gas bearing data; And by gas bearing transfer of data to data processor;
S2: after described gas bearing data are analyzed by data processor processes, form and judge the risk evaluation indexes of work plane outburst danger, and risk evaluation indexes is stored in to criterion index storehouse;
S3: risk evaluation indexes and default evaluation index threshold are processed to the danger classes of determining work plane section scope;
S4: send early warning according to danger classes;
S5: repeating step S1-S4 upgrades the risk evaluation indexes of different operating face.
Gas Preservative Law affects the major control factor of gas bearing, such as the impact analysis of factor to gas such as coal body physical features, coal seam buried depth or absolute altitude, geological structure, coal seam rock property and thickness.
Risk evaluation indexes comprises gas class index, Geology index, stress class index and outburst prevention measures class index; The ratio that described gas class index, Geology index, stress class index and outburst prevention measures class adopt respectively work at present face to gather gas bearing data measured value and preset critical is separately determined outburst danger opinion rating; Described gas class index, Geology index, stress class index and outburst prevention measures class index merge the danger classes that generates whole region; Described dangerous grade classification is 0-100 evaluation of estimate (is less than 0 by 0 calculating, is greater than 100 by 100 calculating), and 0 is minimum degree of danger, the like, 100 is high-risk degree.Merge and refer to that each index adds and subtracts mutually.
Described risk evaluation indexes comprises gas class index, Geology index, stress class index and outburst prevention measures class index; Described gas class index, Geology index, stress class index and outburst prevention measures class adopt respectively measured value and the ratio of threshold separately to determine outburst danger opinion rating.The ratio of each desired value and threshold is determined outstanding grade and influence basin.
The index of described gas class index comprises region effect inspection index, area validation index and Gas index;
Described region effect inspection index, by obtaining residual gas pressure P and gas bearing capacity W, is then determined with the proportionate relationship of its critical reference value respectively;
Described area validation index is by obtaining overall target D, K value, drilling cuttings desorption of mash gas index △ h2 or K1 value, and coal powder quantity of bore S value, the drilling gas initial velocity q that gushes out, R value index, then determines with the proportionate relationship of its critical reference value respectively;
Described Gas index is determined by the Gas concentration obtained and the proportionate relationship of gas density threshold.
Described Geology index comprises Coal Seam Thickness Change rate index, soft lift height index, tomography influence basin index, karst collapse col umn influence basin index, igneous rock intrusion scope index, dirt band pinching place index and rock property and thickness index;
Described Coal Seam Thickness Change rate index is passed through the average of whole thick measuring points of coal within the scope of work plane section as the thick rate of change of benchmark coal, assigning degrees of hazard changing value;
Described soft lift height index is determined by the proportionate relationship of soft lift height and threshold within the scope of work plane section; Within the scope of work plane section, soft lift height exceedes ratio calculating influence basin the assigning degrees of hazard changing value of threshold (acquiescence 0.3m), in Table 2-6;
Described tomography influence basin index, by tomography cross surface line upper lower burrs is surrounded to a region, is done buffer area by table 2-7 and is calculated danger classes changing value; Directly do buffer area with axis for actual measurement tomography axis and calculate danger classes changing value;
Described karst collapse col umn influence basin index is calculated danger classes changing value according to actual measurement karst collapse col umn border by table 2-8;
Described igneous rock is invaded scope index and is invaded border, district by table 2-9 calculating danger classes changing value according to magmatic rock;
Described dirt band pinching place index is calculated danger classes changing value according to dirt band pinching place border by table 2-10;
It is outburst dangerous area that country rock (mud stone or the shale) thickness that described rock property and thickness index are low according to gas permeability exceedes threshold 2.0m region.
Described geostatic stress class index is determined by the solid coefficient of measuring coal.
The danger classes of described work plane section scope is to determine according to the proportionate relationship of risk evaluation indexes and default evaluation index threshold.
Described outburst prevention measures class index comprises topping protection domain index, extraction measure implementation status index and local measure implementation status index;
Described topping protection domain index is outburst area according to the region beyond topping protection domain.
Topping work plane protection domain computational methods are in Table 2-12 and Fig. 3, Fig. 4;
(boring perforate is high according to the perforate parameter of measure boring for described extraction measure implementation status index and local measure implementation status index, azimuth or drift angle, inclination angle, boring length etc.), extraction (discharge) radius of measure boring and calculate measure with the position relationship of measure where-used and hole in effective range and blank tape ratio and the blank tape position of measure where-used, outside effective range and blank tape region is outburst area.
Definition and the acquisition methods of describing respectively each evaluation index in the present invention in detail are provided below:
Gas class index selection method sees the following form 1
Table 1
(1) region effect inspection index calculating method
Be residual gas pressure P and gas bearing capacity W according to " protrusion-dispelling regulation " region effect inspection index, its critical reference value is respectively P=0.74MPa and W=8m3/t, according to the proportionate relationship of measured value and threshold, calculate the danger classes of zones of different with reference range 100m according to the form below 2-1.
Table 2-1 region effect inspection index algorithm
(2) area validation index calculating method
Be respectively overall target D, K value according to " protrusion-dispelling regulation " area validation index, drilling cuttings desorption of mash gas index △ h2 or K1 value, coal powder quantity of bore S value, the drilling gas initial velocity q that gushes out, R value index, its critical reference value is in Table 2-2.According to the proportionate relationship of measured value and threshold, calculate the danger classes in different range with reference range 20m by table 2-3.
Table 2-3 area validation index algorithm
Table 2-2 area validation index critical reference value
(3) daily prediction index computational methods
Basically identical according to " protrusion-dispelling regulation " daily prediction index and area validation index, its computational methods are the same.
(4) Gas index calculating method
According to " safety regulations in coal mine ", Gas concentration exceedes 0.8% for abnormal, Gas abnormity point certain limit (10m before and after acquiescence, across strike is divided into another gallery) is calculated to danger classes changing value, in Table 2-4.
Table 2-4 Gas index algorithm
(5) outstanding omen index calculating method
According to " protrusion-dispelling regulation ", if while having found spray orifice, crown drill and other obviously outstanding omens when operation, the position that obviously outstanding omen occurs the around regional determination of taking out in advance in radius 100m is that measure is invalid, Reng Shu outburst dangerous area, coal seam, region.
Geology and stress class index selection method
| Index classification | Index symbol | Acquisition methods |
| Coal seam thickness and rate of change | μ h | Survey Core analysis and borehole observation |
| Soft lift height | h r | Survey Core analysis and borehole observation |
| Tomography influence basin | L d | Survey Core analysis and borehole observation |
| Karst collapse col umn influence basin | L x | Survey Core analysis and borehole observation |
| Igneous rock impouring scope | L h | Survey Core analysis and borehole observation |
| Dirt band pinching place | L g | Survey Core analysis and borehole observation |
| Rock property and thickness | h w | Survey Core analysis and borehole observation |
| The solid coefficient of coal | f | Well sampling, experimental determination |
2.2 Geology indexs
(1) Coal Seam Thickness Change rate index calculating method
As the thick rate of change of benchmark coal, press table 2-5 assigning degrees of hazard changing value according to whole thick measuring point calculating mean values of coal within the scope of work plane section.
The thick rate of change index of table 2-5 coal algorithm
(2) soft lift height index calculating method
The ratio that exceedes threshold (acquiescence 0.3m) according to soft lift height within the scope of work plane section is calculated influence basin assigning degrees of hazard changing value, in Table 2-6.
The soft lift height index of table 2-6 algorithm
(3) tomography influence basin index calculating method
First upper lower burrs is surrounded to a region for tomography cross surface line, do buffer area by table 2-7 and calculate danger classes changing value; Directly do buffer area with axis for actual measurement tomography axis and calculate danger classes changing value.
Table 2-7 tomography influence basin index algorithm
| Do buffer area with fault region | 10 | 15 | 20 | 30 | 50 |
| Danger classes changing value | +50 | +40 | +30 | +20 | +10 |
(4) karst collapse col umn influence basin index calculating method
Calculate danger classes changing value according to actual measurement karst collapse col umn border by table 2-8.
Table 2-8 karst collapse col umn influence basin index algorithm
| Do buffer area with karst collapse col umn | 0 | 5 | 10 | 20 | 30 |
| Danger classes changing value | +50 | +40 | +30 | +20 | +10 |
(5) igneous rock is invaded scope index calculating method
Invade border, district according to magmatic rock and calculate danger classes changing value by table 2-9.
Table 2-9 igneous rock is invaded scope index algorithm
| Invade district with igneous rock and do buffer area | 0 | 5 | 10 | 20 | 30 |
| Danger classes changing value | +50 | +40 | +30 | +20 | +10 |
(6) dirt band pinching place index calculating method
Calculate danger classes changing value according to dirt band pinching place border by table 2-10.
Table 2-10 dirt band pinching place index algorithm
| Invade district with igneous rock and do buffer area | 0 | 5 | 10 | 20 | 30 |
| Danger classes changing value | +50 | +40 | +30 | +20 | +10 |
(7) rock property and thickness index calculating method
It is outburst dangerous area that country rock (mud stone or the shale) thickness that gas permeability is low exceedes threshold 2.0m region.
2.3 geostatic stress class indexs
According to " protrusion-dispelling regulation ", the solid coefficient f value acquiescence threshold of coal is 0.5, and by table, 2-11 calculates harmful grade changing value.
Table 2-11 solid coefficient index algorithm
Outburst prevention measures class index selection method sees the following form 2
Table 2
(1) topping protection domain computational methods
Region beyond topping protection domain is outburst area.
Topping work plane protection domain along inclined direction should be delimited according to release angle δ, as shown in Figure 2, and the schematic diagram of the topping work plane that Fig. 2 provides for embodiment of the present invention protection domain along inclined direction; A represents topping; B represents protected seam; C represents protection domain boundary line.In the time there is no the release angle of this mine actual measurement, data that can reference table 2-12.
Table 2-12 topping release angle along inclined direction
If topping coal-face stops that the time of adopting exceedes 3 months and release is more abundant, this topping coal work in the face of the protection domain of protected seam across pitch corresponding to beginning line, adopt principal vertical line and the coal column marginal position that stays boundary line can be by release angle δ
5=56 °～60 ° delimitations, as shown in Figure 3, topping work plane beginning line that Fig. 3 provides for the embodiment of the present invention, adopt the schematic diagram of the influence basin of principal vertical line and coal column; A represents topping; B represents protected seam; C1 represents coal column; D represents goaf; E represents protection domain; F represents beginning line, adopts principal vertical line.Topping influence basin also can be determined according to the on-the-spot actual result of investigating.
(2) extraction measure implementation status index calculating method
(boring perforate is high to utilize the perforate parameter of measure boring, azimuth or drift angle, inclination angle, boring length etc.), extraction (discharge) radius of measure boring and calculate measure with the position relationship of measure where-used and hole in effective range and blank tape ratio and the blank tape position of measure where-used, outside effective range and blank tape region is outburst area.
(3) local measure implementation status index calculating method
(boring perforate is high to utilize the perforate parameter of measure boring, azimuth or drift angle, inclination angle, boring length etc.), extraction (discharge) radius of measure boring and calculate measure with the position relationship of measure where-used and hole in effective range and blank tape ratio and the blank tape position of measure where-used, outside effective range, blank tape region is outburst area.
On the basis of research mine stope Gas Preservative Law, by large work plane outburst danger evaluation index four class 14 events, gas class comprises region effect inspection Indexes Abnormality, area validation Indexes Abnormality, daily prediction index is abnormal, Gas is abnormal, five of outstanding omen impacts etc., Geology comprises Coal Seam Thickness Change rate, soft lift height, dirt band pinching place, tomography influence basin, karst collapse col umn influence basin, igneous rock is invaded scope, seven of rock property and thickness etc., the solid coefficient that one of stress class is coal, outburst prevention measures class comprises topping protection domain, extraction measure implementation status, three of local measure implementation status etc., set 0 altogether, 1, 2, 3, 4 is five danger classess, 0 grade (evaluation of estimate is 0-20) is without outburst danger, the like, 4 grades (evaluation of estimate 80-100) is high-risk rank, the proportionate relationship of each index measured value and threshold is determined outburst danger rank and the influence basin of corresponding region, the last comprehensive danger classes that forms work plane section scope of analyzing.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (6)
1. a work plane outburst danger assessment indicator system analytical method, is characterized in that: comprise the following steps:
S1: gather mine stope gas bearing data; And by gas bearing transfer of data to data processor;
S2: after described gas bearing data are analyzed by data processor processes, form and judge the risk evaluation indexes of work plane outburst danger, and risk evaluation indexes is stored in to criterion index storehouse;
S3: risk evaluation indexes and default evaluation index threshold are processed to the danger classes of determining work plane section scope;
S4: send early warning according to danger classes;
S5: repeating step S1-S4 upgrades the risk evaluation indexes of different operating face;
Described risk evaluation indexes comprises gas class index, Geology index, stress class index and outburst prevention measures class index; The ratio that described gas class index, Geology index, stress class index and outburst prevention measures class adopt respectively work at present face to gather gas bearing data measured value and preset critical is separately determined outburst danger opinion rating; Described gas class index, Geology index, stress class index and outburst prevention measures class index merge the danger classes that generates whole region.
2. work plane outburst danger assessment indicator system analytical method according to claim 1, is characterized in that: the index of described gas class index comprises region effect inspection index, area validation index and Gas index;
Described region effect inspection index, by obtaining residual gas pressure P and gas bearing capacity W, is then determined with the proportionate relationship of its critical reference value respectively;
Described area validation index is by obtaining overall target D, K value, drilling cuttings desorption of mash gas index △ h2 or K1 value, and coal powder quantity of bore S value, the drilling gas initial velocity q that gushes out, R value index, then determines with the proportionate relationship of its critical reference value respectively;
Described Gas index is determined by the Gas concentration obtained and the proportionate relationship of gas density threshold.
3. work plane outburst danger assessment indicator system analytical method according to claim 2, is characterized in that: described Geology index comprises Coal Seam Thickness Change rate index, soft lift height index, tomography influence basin index, karst collapse col umn influence basin index, igneous rock intrusion scope index, dirt band pinching place index and rock property and thickness index;
Described Coal Seam Thickness Change rate index is passed through the average of whole thick measuring points of coal within the scope of work plane section as the thick rate of change of benchmark coal, assigning degrees of hazard changing value;
Described soft lift height index is determined by the proportionate relationship of soft lift height and threshold within the scope of work plane section;
The measured value of buffer area and the proportionate relationship of threshold that described tomography influence basin index forms according to tomography cross surface line upper lower burrs are determined;
Described karst collapse col umn influence basin index is carried out danger classes according to actual measurement karst collapse col umn border measured value and is determined;
Described igneous rock intrusion scope index is carried out danger classes according to magmatic rock intrusion border, district measured value and is determined;
Described dirt band pinching place index is carried out danger classes according to dirt band pinching place border measured value and is determined;
Described rock property and thickness index are determined outburst danger grade according to the proportionate relationship of the low country rock thickness measured value of gas permeability and threshold.
4. work plane outburst danger assessment indicator system analytical method according to claim 3, is characterized in that: described stress class index is determined by the solid coefficient of measuring coal.
5. work plane outburst danger assessment indicator system analytical method according to claim 4, is characterized in that: the danger classes of described work plane section scope is to determine according to the proportionate relationship of risk evaluation indexes and default evaluation index threshold.
6. work plane outburst danger assessment indicator system analytical method according to claim 5, is characterized in that: described outburst prevention measures class index comprises topping protection domain index, extraction measure implementation status index and local measure implementation status index;
Described topping protection domain index is determined according to the relation between the release angle of topping protection domain measured value and seam inclination;
Described extraction measure implementation status index basis and local measure implementation status index are taken out drainage radius and are determined effective range and the blank tape ratio of measure boring at measure where-used with the position relationship of measure where-used according to the perforate parameter of measure boring, measure boring;
Described perforate parameter comprises high, the azimuth of boring perforate, drift angle and inclination angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210176845.7A CN102705010B (en) | 2012-05-31 | 2012-05-31 | Method for analyzing work surface outburst danger evaluation index system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210176845.7A CN102705010B (en) | 2012-05-31 | 2012-05-31 | Method for analyzing work surface outburst danger evaluation index system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102705010A CN102705010A (en) | 2012-10-03 |
| CN102705010B true CN102705010B (en) | 2014-10-29 |
Family
ID=46898035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210176845.7A Active CN102705010B (en) | 2012-05-31 | 2012-05-31 | Method for analyzing work surface outburst danger evaluation index system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102705010B (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089305A (en) * | 2013-01-14 | 2013-05-08 | 中国矿业大学(北京) | Risk assessment method for coal and gas outburst of coal beds |
| CN103147799B (en) * | 2013-03-28 | 2015-02-25 | 中煤科工集团重庆研究院有限公司 | Outburst danger early warning method based on gas emission characteristics |
| CN103244187B (en) * | 2013-05-16 | 2015-12-23 | 安徽理工大学 | Coal and gas prominent breeds evolution early warning comprehensive index system |
| CN104850897A (en) * | 2015-02-25 | 2015-08-19 | 中国矿业大学 | Prediction method for coal and gas outburst based on seismic information |
| CN104747229B (en) * | 2015-02-27 | 2017-03-01 | 神华集团有限责任公司 | The safe working method of high methane region driving face in low gaseous mine |
| CN104806291A (en) * | 2015-03-18 | 2015-07-29 | 中煤科工集团重庆研究院有限公司 | Method for verifying near-distance outburst coal seam tunneling working face combined area |
| CN107133878B (en) * | 2016-02-26 | 2021-03-12 | 中国石油化工股份有限公司 | Dry-hot rock district analysis method for geothermal project |
| CN107237619A (en) * | 2016-03-24 | 2017-10-10 | 张鹏翔 | A kind of outburst prediction index coal powder quantity of bore fast accurate intelligent measurement method |
| CN107038847A (en) * | 2017-05-15 | 2017-08-11 | 天地（常州）自动化股份有限公司 | A kind of Underwell stepped alarm method, equipment and system |
| CN107194519A (en) * | 2017-06-16 | 2017-09-22 | 内蒙古科技大学 | A kind of dangerous critical level pre-judging method in goaf |
| CN107288638B (en) * | 2017-07-31 | 2019-11-12 | 中国神华能源股份有限公司 | Getting working face water damage appraisal procedure, medium and system |
| CN107764323B (en) * | 2017-10-09 | 2019-10-22 | 北京科技大学 | A kind of multi-parameter enclosed area risk Monitoring and forecasting system in real-time method |
| CN107784437B (en) * | 2017-10-16 | 2021-09-28 | 重庆大学 | Stress concentration-based coal roadway driving face outburst danger identification method |
| CN108169449A (en) * | 2017-12-07 | 2018-06-15 | 中国矿业大学 | A kind of coal and gas prominent danger local prediction index sensibility determines method |
| CN109033593B (en) * | 2018-07-15 | 2023-05-02 | 中煤科工集团重庆研究院有限公司 | Big data analysis method for inverting working face salient risk factors by utilizing local salient risk prediction forecast data |
| CN112880580B (en) * | 2021-01-13 | 2022-06-03 | 中煤科工集团重庆研究院有限公司 | Method and system for sensing roadway surrounding rock deformation by optical fiber embedded flexible rod body |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101520821A (en) * | 2009-04-09 | 2009-09-02 | 中铁二局股份有限公司 | Method for evaluating gas tunnel outburst and device for implementing same |
| CN101550841A (en) * | 2009-05-08 | 2009-10-07 | 煤炭科学研究总院重庆研究院 | Coal and gas outburst hazard early warning system and early warning method |
| CN101561359A (en) * | 2009-04-03 | 2009-10-21 | 中铁二局股份有限公司 | Grading method for gas tunnel |
| CN102168531A (en) * | 2011-03-30 | 2011-08-31 | 中国矿业大学 | Coupling predication method of outburst risk multivariate information of gas coal and gas |
-
2012
- 2012-05-31 CN CN201210176845.7A patent/CN102705010B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101561359A (en) * | 2009-04-03 | 2009-10-21 | 中铁二局股份有限公司 | Grading method for gas tunnel |
| CN101520821A (en) * | 2009-04-09 | 2009-09-02 | 中铁二局股份有限公司 | Method for evaluating gas tunnel outburst and device for implementing same |
| CN101550841A (en) * | 2009-05-08 | 2009-10-07 | 煤炭科学研究总院重庆研究院 | Coal and gas outburst hazard early warning system and early warning method |
| CN102168531A (en) * | 2011-03-30 | 2011-08-31 | 中国矿业大学 | Coupling predication method of outburst risk multivariate information of gas coal and gas |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102705010A (en) | 2012-10-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102705010B (en) | Method for analyzing work surface outburst danger evaluation index system | |
| CN102691522B (en) | Method for forming dynamic prediction graph of outburst danger of working face | |
| CN102337922B (en) | Method for inspecting burst-preventing effect of areas | |
| CN101550841B (en) | Coal and gas outburst hazard early warning system and early warning method | |
| CN109577982A (en) | Wall type Lian Cailian fills water protection mining and water resource migration monitoring, water damage method for early warning | |
| He et al. | Integrated rockburst early warning model based on fuzzy comprehensive evaluation method | |
| CN102817619B (en) | Combined advanced drilling exploration method for detecting water-free dissolving cavity and water dissolving cavity in tunnel | |
| CN109767136A (en) | Roof water-bearing layer water fathering hazard assessment and the duplexing practice of prediction four | |
| CN102508941B (en) | Method for accurately detecting geological structure and dividing coal and gas outburst area | |
| CN103993878A (en) | Water diversion fracture zone height estimating method | |
| CN110489928B (en) | Method and system for predicting development height of water-flowing fractured zone in shallow coal seam mining area | |
| CN113153417B (en) | Visual real-time monitoring and evaluating system and method for mine gas extraction system | |
| CN105041306A (en) | Impact risk warning method on basis of multi-parameter critical coal dust quantity indexes | |
| CN104899928A (en) | Three-directional geology modeling method based on sparse borehole points | |
| CN107091085A (en) | A kind of multi-parameter Identification method of shallow-depth-excavation tunnel formation stability | |
| CN107784437B (en) | Stress concentration-based coal roadway driving face outburst danger identification method | |
| CN112855123B (en) | Method for determining depth of pressure relief drilling hole | |
| Kim et al. | Evaluation of monitoring items for adverse ground conditions in subsea tunneling | |
| CN111046595A (en) | Typical and atypical rock burst mine type dividing method | |
| DAI et al. | Water distribution extracted from mining subsidence area using Kriging interpolation algorithm | |
| Yang et al. | Application of GIS-based decision-making model to evaluate safety of underground mining under Neogene aquifers | |
| CN105332695A (en) | Prediction method of coal working face | |
| CN112418494A (en) | Coal mine rock burst risk grading prediction method based on drilling cutting monitoring | |
| CN112627811A (en) | Method for exploring geological structure by utilizing extraction drill hole | |
| CN114966842B (en) | Method for constructing three-dimensional visualization model of coal-bearing stratum fault |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: Department of City Road, Jiulongpo District, Chongqing city science and Technology Park 400039 Lang No. 6 Applicant after: CCTEG CHONGQING RESEARCH INSTITUTE Co.,Ltd. Address before: Department of City Road, Jiulongpo District, Chongqing city science and Technology Park 400039 Lang No. 6 Applicant before: Chongqing Research Institute of China Coal Technology & Engineering Group Corp. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: CHINA COAL SCIENCE AND INDUSTRY GROUP CHONGQING RESEARCH INSTITUTE TO: CHINA COAL TECHNOLOGY ENGINEERING GROUP CHONGQING RESEARCH INSTITUTE |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |