CN102155213B - Dynamic detection method for mine mining-induced fracture - Google Patents
Dynamic detection method for mine mining-induced fracture Download PDFInfo
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Abstract
The invention discloses a dynamic detection method for a mine mining-induced fracture. The difficulty and blindness of gas drainage level position gives rise to problems that the level position of the gas drainage borehole arrangement is too high, the mining-induced fracture is underdeveloped, the gas drainage difficulty is big and the efficiency is low; the excessive lower level position of the gas drainage borehole arrangement easily gives rise to problems that a working surface seriously leaks wind, the normal running of a mine ventilation system is affected, the stability of the rock stratum is bad, and the effective gas drainage time is short. The method comprises the following steps of: detecting positions, parameters and numbers of boreholes by design; constructing before mining a stopping line and detecting the boreholes, carrying out the water leakage detection and recording data; taking a vertical height as a standard to normalize detection data, forecasting the development height of the mining-induced fracture after different mining times. The method can improve conditions of blind hole arrangement, short service life and low efficiency aiming at high position gas mining, increases the reasonableness of the hole arrangement and prolongs the mining time; and the method is beneficial to the scientific formulation of an under-water-body mining system, reduces the possibility of water outgoing of the water body, reduces the cost of coal mining and gas mining and improves the economic efficiency.
Description
Technical field
The present invention relates to a kind of dynamic testing method of mine mining induced fissure.
Technical background
Along with increasing mine is opened up to the deep, the harm of mine gas and prevent more importantly, for this mine disaster of gas source, a lot of mines have all been set up, and mine gas extraction system is as the measure that effects a permanent cure that solves the mine gas disaster.Administer for adjacent layers and this coal-bed gas the high-order gas pumping technology of developing, to be the excessive effective measures of gushing out of gas that solve in the mine exploitation process undoubtedly, but difficulty and blindness due to the position selection of extraction layer, cause high-order extraction borehole to arrange unreasonable, cost is high, efficient is low and person property's significant wastage, trace it to its cause is mainly because inadequate to the understanding of mine mining induced fissure band development trend, caused or because the layer position that extraction borehole is arranged is too high, the mining induced fissure agensis, the extraction difficulty is large, and efficient is low; Perhaps the layer position arranged of extraction borehole is too low, easily causes work plane seriously to divulge a secret, and affect mine ventilation system and runs well, and the time-parallel strata poor stability hole difficult in maintenance, and effective extraction time is short, even can't pore-forming, and extraction efficient is difficult to assurance.Simultaneously, for the situation that has water body to exist above working seam, can predict the stoping period water body to the possibility of swallet by the mining induced fissure detection of dynamic, to adjusting mine back production system, important directive significance be arranged.Therefore, the distribution rule of development that detects mining induced fissure has great significance for mine gas extraction and coal mining under water bodies, directly affects the effect of hole pumping and mining gas and the safety of coal mining under water bodies.
For the efficient of maximum performance High Position Drilling gas pumping and the safety of coal mining under water bodies, must improve accuracy and precision to mining induced fissure rule of development understanding.At present commonly used rule of thumb or test comes the means of the high-order mash gas pumping drilling of choice arrangement and design back production system to have that cost is high, blindness is large and the problem such as unreliable.
Summary of the invention
Technical problem solved by the invention be to provide a kind of can improve at present for high-order gas pumping cloth hole blindly, the situation of short, inefficiency of life-span, increase cloth hole reasonability, extend the dynamic testing method of the mine mining induced fissure of extraction time.
For solving above-mentioned technical problem, the technical scheme that the present invention takes:
The dynamic testing method of mine mining induced fissure is characterized in that: described method realizes by following steps:
The first step: bore position, parameter and quantity thereof are surveyed in design: survey drilling design near the back production line, take the vertical plane at back production line place as detected object, all borings are all parallel with the working face extraction direction, boring length is stopped adopting the line correspondence position and is as the criterion to reach, 5 borings of minimum design, survey needs to satisfy, the inclination angle is from 20 degree to 60 degree;
Second step: survey boring in back production construction before stop adopting line, carry out immediately first round water-leaking property after completing and detect and record data;
The 3rd step: to survey boring carry out through hole processing to stopping adopting line after 10 days in back production, carry out immediately second after completing and take turns water-leaking property detection and record data;
The 4th step: to survey boring carry out through hole processing to stopping adopting line after 20 days in back production, carry out immediately the third round water-leaking property after completing and detect and record data;
The 5th step: to survey boring carry out through hole processing to stopping adopting line after 30 days in back production, carry out immediately the fourth round water-leaking property after completing and detect and record data;
The 6th step: detect data take vertical height as standardization, the survey data are converted on the vertical distance of measuring point apart from basic point by hole depth, selection is laid the platform end face of rig as basic point, the survey data that the 3rd step was obtained to the 5th step is analyzed with the survey data that second step obtains respectively, weighs the development height of mining induced fissure different time after back production to the 5th water leakage intensity of variation that goes on foot with the 3rd step;
the 7th step: the development height of mining induced fissure after going on foot mining induced fissure development height and the final mining induced fissure development height match mining induced fissure law of development model of surveying and predict the back production different time according to second step to the five: the growth of mining induced fissure has a limiting value, this limiting value can represent with final mining induced fissure development height, take the time as independent variable, take mining induced fissure development height corresponding to different time as strain capacity, take final mining induced fissure development height as the limit, can simulate the time dependent relation equation of mining induced fissure development height, the mining induced fissure development height of prediction different time.
Time in above-mentioned the 7th step, to be back production adopted the later time of line to stopping, with back production to the back production line as zero point.
The time dependent relation equation of mining induced fissure development height in the 7th above-mentioned step is:
In formula: H represents that mining induced fissure is for height;
T represents elapsed time after measuring point coal seam back production;
T
1Represent the 1st layer of disrumpent feelings time of competent bed;
T
iRepresent the disrumpent feelings time of i layer competent bed;
T
nRepresent the disrumpent feelings time of n layer competent bed;
N represents the quantity of competent bed in the target coal seam overlying strata.
Compared with prior art, the present invention can improve at present for high-order gas pumping cloth hole blindly, the situation of short, inefficiency of life-span, increase cloth hole reasonability, extend the extraction time; Be conducive to scientifically formulate exploitation system under water body, reduce the possibility of water body water outlet; Reduce coal back production and gas pumping cost, improve business efficiency.
The specific embodiment
Below the present invention is described in detail.
Concrete technology flow process of the present invention is as follows:
The first step: detection bore position, parameter and quantity thereof that design needs.
Select suitable position construction to survey according to conditions down-hole and bore nest, be typically chosen near the back production line of design, take the vertical plane at back production line place as detected object, ensure time enough and complete drilling construction and detection mission, ensure and to complete the required rig of detection mission, electric power, hydraulic pressure and space; According to the performance of the position of boring nest, rig and aperture, length, orientation and the elevation angle that needs the distance and bearing design detection boring of the detection of a target, generally, all borings are all parallel with the working face extraction direction, reducing the boring workload, boring length is stopped adopting the line correspondence position and is as the criterion to reach; 5 borings of general minimum design are surveyed needs to satisfy, and the inclination angle is from 20 degree to 60 degree.
Second step: survey boring in back production construction before stop adopting line, carry out immediately taking turns water-leaking property after completing and detect and record data.
Before the back production line is not arrived in back production, once be not subjected to cover on mining influence original the water leakage of each rock stratum, with the reference as the later analysis contrast; Consider in boring complex situations to occur, must monitor in exploration hole immediately and record.
The 3rd step: to survey boring carry out through hole processing to stopping adopting line after 10 days in back production, carry out immediately second after completing and take turns water-leaking property detection and record data.
After after a while, the complex situations such as piece may appear in boring being out of shape, falling, must carry out through hole before being lowered to detecting devices processes, after finishing, through hole detects immediately and record data, avoid to complete and survey or the complex situations such as detecting loss equipment occur, if can not through hole must consider to construct to remedy hole and monitor and record.
The 4th step: to survey boring carry out through hole processing to stopping adopting line after 20 days in back production, carry out immediately the third round water-leaking property after completing and detect and record data.
The 5th step: to survey boring carry out through hole processing to stopping adopting line after 30 days in back production, carry out immediately the fourth round water-leaking property after completing and detect and record data.
The 6th step: detect data take vertical height as standardization, the survey data that the 3rd step was obtained to the 5th step is analyzed with the survey data that second step obtains respectively, weighs the development height of mining induced fissure different time after back production to the 5th water leakage intensity of variation that goes on foot with the 3rd step.
Unification in vertical direction detects data, and with the foundation of relative water leakage as the mining induced fissure development height, the larger explanation mining induced fissure of water leakage is educated all the more relatively.Because each exploration hole has certain inclination angle, the data of surveying can not be used for directly contrasting, so at first the survey data must be converted on the vertical distance of measuring point apart from basic point by hole depth, the general selection laid the platform end face of rig as basic point.The development height of weighing mining induced fissure with relative water leakage can be avoided the false appearance of leaking that causes because of lithology.
The 7th step: the development height of mining induced fissure after going on foot mining induced fissure development height and the final mining induced fissure development height match mining induced fissure law of development model of surveying and predict the back production different time according to second step to the five.
According to theory analysis, the growth of mining induced fissure has a limiting value, this limiting value can represent with final mining induced fissure development height, take the time as independent variable, take mining induced fissure development height corresponding to different time as strain capacity, take final mining induced fissure development height as the limit, can simulate the time dependent relation equation of mining induced fissure development height, as forecast model, can predict the mining induced fissure development height of different time with this equation.Here the said time refers to that back production adopts the later time of line to stopping, with back production to the back production line as zero point.
Time in above-mentioned the 7th step, to be back production adopted the later time of line to stopping, with back production to the back production line as zero point.
The time dependent relation equation of mining induced fissure development height in the 7th above-mentioned step is:
In formula: H represents that mining induced fissure is for height;
T represents elapsed time after measuring point coal seam back production;
T
1Represent the 1st layer of disrumpent feelings time of competent bed;
T
iRepresent the disrumpent feelings time of i layer competent bed;
T
nRepresent the disrumpent feelings time of n layer competent bed;
N represents the quantity of competent bed in the target coal seam overlying strata.
The technology of the present invention is the leak hunting functional exploitation of technology of former subsection water injection, segmentation, by quick, high accuracy and the low advantage of cost of former technology, for accurately surveying and predicting that the development height of different time mining induced fissure provides direct detection method after back production.This technical application is strong, and principle is simple, is easy to grasp and utilize.
Claims (3)
1. the dynamic testing method of a mine mining induced fissure, it is characterized in that: described method realizes by following steps:
The first step: bore position, parameter and quantity thereof are surveyed in design: survey drilling design near the back production line, take the vertical plane at back production line place as detected object, all borings are all parallel with the working face extraction direction, boring length is stopped adopting the line correspondence position and is as the criterion to reach, 5 borings of minimum design, survey needs to satisfy, the inclination angle is from 20 degree to 60 degree;
Second step: survey boring in back production construction before stop adopting line, carry out immediately first round water-leaking property after completing and detect and record data;
The 3rd step: to survey boring carry out through hole processing to stopping adopting line after 10 days in back production, carry out immediately second after completing and take turns water-leaking property detection and record data;
The 4th step: to survey boring carry out through hole processing to stopping adopting line after 20 days in back production, carry out immediately the third round water-leaking property after completing and detect and record data;
The 5th step: to survey boring carry out through hole processing to stopping adopting line after 30 days in back production, carry out immediately the fourth round water-leaking property after completing and detect and record data;
The 6th step: detect data take vertical height as standardization, the survey data are converted on the vertical distance of measuring point apart from basic point by hole depth, selection is laid the platform end face of rig as basic point, the survey data that the 3rd step was obtained to the 5th step is analyzed with the survey data that second step obtains respectively, weighs the development height of mining induced fissure different time after back production to the 5th water leakage intensity of variation that goes on foot with the 3rd step;
the 7th step: the development height of mining induced fissure after going on foot mining induced fissure development height and the final mining induced fissure development height match mining induced fissure law of development model of surveying and predict the back production different time according to second step to the five: the growth of mining induced fissure has a limiting value, this limiting value represents with final mining induced fissure development height, take the time as independent variable, take mining induced fissure development height corresponding to different time as strain capacity, take final mining induced fissure development height as the limit, simulate the time dependent relation equation of mining induced fissure development height, the mining induced fissure development height of prediction different time.
2. the dynamic testing method of mine mining induced fissure according to claim 1 is characterized in that: the time in described the 7th step, to be back production adopted the later time of line to stopping, with back production to the back production line as zero point.
3. the dynamic testing method of mine mining induced fissure according to claim 1 is characterized in that: the time dependent relation equation of mining induced fissure development height in described the 7th step is:
In formula: H represents mining induced fissure band height;
T represents elapsed time after measuring point coal seam back production;
T
1Represent the 1st layer of disrumpent feelings time of competent bed;
T
iRepresent the disrumpent feelings time of i layer competent bed;
T
nRepresent the disrumpent feelings time of n layer competent bed;
N represents the quantity of competent bed in the target coal seam overlying strata.
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| CN104898178B (en) * | 2015-04-28 | 2017-08-01 | 中国矿业大学 | The measure device and assay method of a kind of Seam Mining cranny development degree |
| CN107448143B (en) * | 2017-06-20 | 2019-05-10 | 清华大学 | Broken rock mass dynamic boring method |
| CN108442917B (en) * | 2017-12-14 | 2021-07-06 | 中国矿业大学 | Underground continuous real-time monitoring method for height of coal seam roof water flowing fractured zone |
| CN111781657B (en) * | 2020-06-16 | 2023-07-28 | 中煤科工开采研究院有限公司 | Device and method for measuring penetrating height of fracture zone |
| CN112612059B (en) * | 2020-12-25 | 2023-02-28 | 中国矿业大学 | Nondestructive detection method for three-dimensional model mining-induced fracture development characteristics |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4055074A (en) * | 1976-12-30 | 1977-10-25 | The United States Of America As Represented By The Secretary Of The Interior | Window method for measuring leakage |
| EP0182624A1 (en) * | 1984-11-16 | 1986-05-28 | Fernando Gordun Burillo | Method of waterproofing surfaces such as tunnels, canals and mines |
| CN1149101A (en) * | 1996-03-06 | 1997-05-07 | 大同矿务局科学研究所 | Method for crushing voerhead coal |
| CN1693654A (en) * | 2005-06-02 | 2005-11-09 | 淮南矿业(集团)有限责任公司 | Gas pressure relief method of ground drilling extraction minery and goaf |
| CN101251028A (en) * | 2008-04-03 | 2008-08-27 | 淮南矿业(集团)有限责任公司 | Method for taking out and picking high gassy seam group dislodging gob-side entry retaining Y type ventilated decompression firedamp |
| RU2350753C1 (en) * | 2007-06-27 | 2009-03-27 | Открытое Акционерное Общество "Уральский Научно-Исследовательский И Проектный Институт Галургии" (Оао "Галургия") | Re-circulating ventilator installation |
| CN101858209A (en) * | 2010-03-26 | 2010-10-13 | 山东科技大学 | Synchronous detection method of terrane crack distribution of base plate |
| CN101915072A (en) * | 2010-08-04 | 2010-12-15 | 煤炭科学研究总院重庆研究院 | Method for extracting coal bed gas in stable mining region by ground well drilling |
-
2011
- 2011-04-08 CN CN 201110088122 patent/CN102155213B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4055074A (en) * | 1976-12-30 | 1977-10-25 | The United States Of America As Represented By The Secretary Of The Interior | Window method for measuring leakage |
| EP0182624A1 (en) * | 1984-11-16 | 1986-05-28 | Fernando Gordun Burillo | Method of waterproofing surfaces such as tunnels, canals and mines |
| CN1149101A (en) * | 1996-03-06 | 1997-05-07 | 大同矿务局科学研究所 | Method for crushing voerhead coal |
| CN1693654A (en) * | 2005-06-02 | 2005-11-09 | 淮南矿业(集团)有限责任公司 | Gas pressure relief method of ground drilling extraction minery and goaf |
| RU2350753C1 (en) * | 2007-06-27 | 2009-03-27 | Открытое Акционерное Общество "Уральский Научно-Исследовательский И Проектный Институт Галургии" (Оао "Галургия") | Re-circulating ventilator installation |
| CN101251028A (en) * | 2008-04-03 | 2008-08-27 | 淮南矿业(集团)有限责任公司 | Method for taking out and picking high gassy seam group dislodging gob-side entry retaining Y type ventilated decompression firedamp |
| CN101858209A (en) * | 2010-03-26 | 2010-10-13 | 山东科技大学 | Synchronous detection method of terrane crack distribution of base plate |
| CN101915072A (en) * | 2010-08-04 | 2010-12-15 | 煤炭科学研究总院重庆研究院 | Method for extracting coal bed gas in stable mining region by ground well drilling |
Non-Patent Citations (5)
| Title |
|---|
| 任强 * |
| 刘伟韬.覆岩采动裂隙带发育规律的数值模拟分析.《安全与环境学报》.2006,(第s1期),第75-78页. * |
| 李树志 * |
| 白国良 * |
| 高均海.老采动区覆岩裂隙发育特征及活化机理研究.《煤矿开采》.2010,(第5期),第11-14页. * |
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