CN103470298A - Design method of hole-drilling and hole-forming process scheme for drainage of outburst coal seam - Google Patents

Design method of hole-drilling and hole-forming process scheme for drainage of outburst coal seam Download PDF

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Publication number
CN103470298A
CN103470298A CN2013104584676A CN201310458467A CN103470298A CN 103470298 A CN103470298 A CN 103470298A CN 2013104584676 A CN2013104584676 A CN 2013104584676A CN 201310458467 A CN201310458467 A CN 201310458467A CN 103470298 A CN103470298 A CN 103470298A
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coal seam
drilling
coal
parameter
geological condition
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CN103470298B (en
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王永龙
孙玉宁
宋维宾
王振锋
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Henan University of Technology
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Henan University of Technology
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Abstract

The invention relates to a design method of a hole-drilling and hole-forming process scheme for drainage of an outburst coal seam. The design method comprises the following steps: establishing a logical relationship between the change of geological conditions of the seam and the type of a needed optimal drilling rod; establishing a logical relationship between a drilling parameter of seam construction and a power parameter of a needed drilling machine; establishing a logical relationship among the geological conditions of the seam, a hole-drilling included angle, the water content of the seam and the needed slag-discharging power; establishing a logical relationship among the thickness of the beam, the air permeability coefficient of the beam, the diameter of drilling holes and the distribution scheme of the drilling holes; and according to the four logical relationships, establishing a database, programming software, and inputting corresponding geological conditions of the seam and the hole-drilling design parameters by a software platform of a computer to realize an automation design of the hole-drilling and hole-forming process scheme for drainage of the outburst coal seam. The design method has the advantages that engineering persons can be convenient to realize type selection of the drilling rod, type selection of the drilling machine, the slag-discharging power and the distribution design of the drilling holes of the seam according to the change of the geological conditions of the seam and the change of the hole-drilling parameter design, and the square ore is based on the scientific design scheme so as to be beneficial to realizing safe and high-efficiency drilling of the seam.

Description

Projecting coal bed extraction borehole pore-forming technique Design Method
Technical field
The present invention relates to mining engineering subject Gas-bearing Coal Seams gas control professional domain, particularly projecting coal bed extraction borehole pore-forming technique Design Method, be applicable to extraction bore process solution formulation under various coal seam conditions.
Background technology
Continuous increase along with the China's coal-mine mining depth, to there is increasing low gaseous mine to change high prominent mine into, the ratio of high gas and coal and gas outburst mine increases gradually, coal mining presents that " deep is (heavily stressed, high gas, strong adsorptivity), high-strength, hypotonic " three large prominent features, the coal seam pore-forming is more difficult, bit freezing in drilling process, lose brill, breaking of rod phenomenon is serious, spray orifice, the dynamic phenomenons such as coal big gun take place frequently, drilling depth is shallow, creep into Frequent Accidents, not only connect the safety in production that affects colliery, and affect coal seam back production efficiency, produce and brought huge economic loss to colliery.The technician is under the complicated seam condition, selection for premolded package is often felt simply helpless, therefore, how science solves projecting coal bed extraction borehole pore-forming technique design problem, for realizing that projecting coal bed safe and efficient production has important theory directive significance and actual application value.
Summary of the invention
One of purpose of the present invention is, solve projecting coal bed safe, efficiently creep into problem, provide a kind of variation based on factors such as coal seam geological condition variation, data of holes drilled to high gas and the comprehensive study analysis is carried out in the impact that easily outstanding coal borer advances, form that coal seam geological condition changes, data of holes drilled changes with high gas and easily give prominence between coal process planning thinking logical relation one to one.
A nearly step purpose of the present invention be to solve projecting coal bed safe, efficiently creep into problem, provide a kind of, based on above-mentioned research method, form four important logical relations that solve projecting coal bed extraction borehole drilling process schematic design: the logical relation between the variation of coal seam geological condition and required optimum drilling rod type; Logical relation between coal seam construction drill parameter and required rig kinetic parameter; Logical relation between coal seam geological condition, dip angle of hole, coal seam moisture and required deslagging power; Logical relation between coal seam thickness, Permeability Coefficent in Coal Seam, bore diameter and layout scheme of boreholes.By above-mentioned four kinds of logical relations, building database, and making software platform, call corresponding database, by the computer software platform, inputs corresponding coal seam geological condition and drilling design parameter, realizes the Automation Design of drilling in coal scheme.
To achieve these goals, through long-term research and type approval test, the projecting coal bed extraction borehole pore-forming technique of the present invention Design Method, comprise the following steps.
(1) select the optimization drilling rod according to the variation of coal seam geological condition, coal seam geological condition comprises coal seam solid coefficient f, coal seam absolute gas emission rate q 1, coal seam relative abundance of methane q 2, coal gas pressure p, coal seam buried depth h 1with coal seam thickness h 2each drilling rod is according to coal seam geological condition, crept into the analysis of optimizing design with deslagging, optimize the structural parameters of drilling rod, form the best drilling rod be complementary with it under the different coal condition, by above-mentioned research method, on the basis of relation between analysis-by-synthesis and research coal seam geological condition and required drilling rod type, determine the variation of coal seam geological condition and the logical relation between required optimum drilling rod type, by the above results organized data storehouse.
(2) select the optimum Match rig according to coal seam construction drill parameter, the selection of rig power depends primarily on the parameter of construction drill, wherein mainly comprise bore diameter d, drilling design degree of depth L, each organizes data of holes drilled, by calculating the mathematical relationship of bore diameter, drilling depth and rig power, obtain the best rig kinetic parameter with the data of holes drilled coupling,, each group drilling design parameter and corresponding one group of rig kinetic parameter, wherein the moving parameter of rig comprises rig rotation torque N, and rig is to machine power F 1, rig pulling force F 2, by above-mentioned research method, on the basis of relation between analysis-by-synthesis and research coal seam construction drill parameter and required rig kinetic parameter, determine the logical relation between coal seam construction drill parameter and required rig kinetic parameter, by the above results organized data storehouse.
(3) determining the selection of deslagging power mode and parameter according to coal seam geological condition, dip angle of hole, coal seam moisture, deslagging power comprises mechanical deslagging, hydraulic slag discharging and wind power slag-discharging, and wherein hydraulic slag discharging and wind power slag-discharging comprise determining of hydraulic pressure and two important parameters of blast.Calculate the variation of coal seam geological condition, dip angle of hole, coal seam moisture by optimization, determine in each situation, the selection of deslagging power, draw coal seam geological condition, dip angle of hole, the coal seam moisture logical relation corresponding with deslagging power, by the above results organized data storehouse.
(4) because coal seam thickness is determining the row of boring layout and the position on through-thickness, Permeability Coefficent in Coal Seam and bore diameter are determining the spacing between boring, calculate the variation of coal seam thickness, Permeability Coefficent in Coal Seam, bore diameter by optimization, determine in each situation, the arrangement of boring, draw coal seam thickness, Permeability Coefficent in Coal Seam, the bore diameter logical relation corresponding with the arrangement of boring, and by the above results organized data storehouse.
(5) foundation based on above-mentioned four kinds of logical relations, for the design of projecting coal bed extraction borehole premolded package provides the Base data platform of science, used for convenience of the engineering staff, and the bag that develops software, set up the computer visualization operating platform.
(6) according to the concrete condition of Fang Suoyao job location, ore deposit, by software platform, input corresponding coal seam geological condition and drilling design parameter, realize the Automation Design of drilling in coal scheme.
The accompanying drawing explanation
Fig. 1 is the projecting coal bed extraction borehole pore-forming technique of the present invention method for designing workflow diagram.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
The projecting coal bed extraction borehole pore-forming technique of the present invention Design Method is specifically implemented technical scheme and is comprised the following steps.
(1) drilling rod type selecting.For the projecting coal bed problem of creeping into of China, by a large amount of research in early stage, find that the type of different drilling rods affects drilling depth and the drilling efficiency in coal seam, and have certain rule to seek.That is, the relation of an optimum Match is arranged between coal seam geological condition and drilling rod type, therefore, can select the optimization drilling rod according to the variation of coal seam geological condition, coal seam geological condition comprises coal seam solid coefficient f, coal seam absolute gas emission rate q 1, coal seam relative abundance of methane q 2, coal gas pressure p, coal seam buried depth h 1with coal seam thickness h 2, each drilling rod, according to coal seam geological condition, is crept into and the deslagging analysis of optimizing design, optimizes the structural parameters of drilling rod, forms the best drilling rod be complementary with it under the different coal condition.As stated above, on the basis of relation between analysis-by-synthesis and research coal seam geological condition and required drilling rod type, determine the variation of coal seam geological condition and the logical relation between required optimum drilling rod type, by the above results organized data storehouse, and storage, the software platform of preparing against post-production calls.
(2) rig type selecting.In the drilling in coal process, the selection that the projected depth L of boring and bore diameter d are determining rig power, therefore, by the do mathematical relationship of job location bore diameter, drilling depth and rig power of calculating, obtain the best rig kinetic parameter with data of holes drilled coupling, that is, and the major parameter of each group drilling design parameter and corresponding one group of rig power, wherein the moving parameter of rig comprises rig rotation torque N, and rig is to machine power F 1, rig pulling force F 2.As stated above, set up the database of logic corresponding relation between coal seam construction drill parameter and required rig kinetic parameter, and storage, the software platform of preparing against post-production calls.
(3) deslagging dynamic design.Determining the selection of deslagging power mode and parameter according to coal seam geological condition, dip angle of hole, coal seam moisture, deslagging power comprises mechanical deslagging, hydraulic slag discharging and wind power slag-discharging, and wherein hydraulic slag discharging and wind power slag-discharging comprise determining of hydraulic pressure and two important parameters of blast.Calculate the variation of coal seam geological condition, dip angle of hole, coal seam moisture by optimization, determine in each situation, the selection of deslagging power, draw coal seam geological condition, dip angle of hole, the coal seam moisture logical relation corresponding with deslagging power, by the above results organized data storehouse, and storage, the software platform of preparing against post-production calls.
(4) layout scheme of boreholes design.Because coal seam thickness is determining the row of boring layout and the position on through-thickness, Permeability Coefficent in Coal Seam and bore diameter are determining the spacing between boring, calculate the variation of coal seam thickness, Permeability Coefficent in Coal Seam, bore diameter by optimization, determine in each situation, the arrangement of boring, draw coal seam thickness, Permeability Coefficent in Coal Seam, the bore diameter logical relation corresponding with the arrangement of boring, and by the above results organized data storehouse, and storage, the software platform of preparing against post-production calls.
(5) based on above-mentioned steps, set up software platform, form the drilling process Scheme Design System.
(6) utilize software platform, the above-mentioned parameter of input required job location, ore deposit side, generate the drilling process scheme automatically.

Claims (7)

1. projecting coal bed extraction borehole pore-forming technique Design Method comprises the following steps:
(1) on the basis of relation between analysis-by-synthesis and research coal seam geological condition and required drilling rod type, determine the variation of coal seam geological condition and the logical relation between required optimum drilling rod type;
(2) on the basis of relation between analysis-by-synthesis and research coal seam construction drill parameter and required rig kinetic parameter, determine the logical relation between coal seam construction drill parameter and required rig kinetic parameter;
(3) on the basis of relation between analysis-by-synthesis and research coal seam geological condition, dip angle of hole, coal seam moisture and required deslagging power, determine the logical relation between coal seam geological condition, dip angle of hole, coal seam moisture and required deslagging power;
(4) on the basis of relation between analysis-by-synthesis and Study on Coal layer thickness, Permeability Coefficent in Coal Seam, bore diameter and optimum layout scheme of boreholes, determine the logical relation between coal seam thickness, Permeability Coefficent in Coal Seam, bore diameter and layout scheme of boreholes;
(5) by above-mentioned four kinds of logical relations, building database, and making software platform, call corresponding database, by the computer software platform, input corresponding coal seam geological condition and drilling design parameter, realize the Automation Design of projecting coal bed extraction borehole pore-forming technique scheme;
(6) according to the concrete condition of Fang Suoyao job location, ore deposit, by above-mentioned software platform, input corresponding coal seam geological condition and drilling design parameter, realize the Automation Design of drilling in coal scheme.
2. a kind of projecting coal bed extraction borehole premolded package method for designing according to claim 1, it is characterized in that, in step (1): select the optimization drilling rod according to the variation of coal seam geological condition, coal seam geological condition comprises coal seam solid coefficient f, coal seam absolute gas emission rate q 1, coal seam relative abundance of methane q 2, coal gas pressure p, coal seam buried depth h 1with coal seam thickness h 2each drilling rod, according to coal seam geological condition, adopts computer software to optimize the structural parameters of drilling rod, forms the best drilling rod be complementary with it under the different coal condition, determine the variation of coal seam geological condition and the logical relation of required optimum drilling rod type, by the above results organized data storehouse.
3. a kind of projecting coal bed extraction borehole premolded package method for designing according to claim 1, it is characterized in that, in step (2): according to coal seam construction drill parameter, selecting is good coupling rig, the selection of rig power depends primarily on the parameter of construction drill, wherein mainly comprise bore diameter d, drilling design degree of depth L, each organizes data of holes drilled, by calculating bore diameter, the mathematical relationship of drilling depth and rig power, obtain the best rig kinetic parameter with the data of holes drilled coupling, , the major parameter of each group drilling design parameter and corresponding one group of rig power, wherein the moving parameter of rig comprises rig rotation torque N, rig is to machine power F 1, rig pulling force F 2, by the above-mentioned organized data of logic one to one storehouse.
4. a kind of projecting coal bed extraction borehole premolded package method for designing according to claim 1, it is characterized in that, in step (3): coal seam geological condition, dip angle of hole, coal seam moisture are determining the selection of deslagging power mode and parameter, deslagging power comprises mechanical deslagging, hydraulic slag discharging and wind power slag-discharging, and wherein hydraulic slag discharging and wind power slag-discharging comprise determining of hydraulic pressure and two important parameters of blast; Calculate the variation of coal seam geological condition, dip angle of hole, coal seam moisture by optimization, determine in each situation, the selection of deslagging power, draw coal seam geological condition, dip angle of hole, the coal seam moisture logical relation corresponding with deslagging power, by the above results organized data.
5. a kind of projecting coal bed extraction borehole premolded package method for designing according to claim 1, it is characterized in that, in step (4): coal seam thickness is determining the row of boring layout and the position on through-thickness, Permeability Coefficent in Coal Seam and bore diameter are determining the spacing between boring, calculate coal seam thickness by optimization, Permeability Coefficent in Coal Seam, the variation of bore diameter, determine in each situation, the arrangement of boring, draw coal seam thickness, Permeability Coefficent in Coal Seam, the logical relation that bore diameter is corresponding with the arrangement of boring, and by the above results organized data.
6. a kind of projecting coal bed extraction borehole premolded package method for designing according to claim 1, it is characterized in that, in step (5): by above-mentioned four kinds of logical relations, building database, and making software platform, call corresponding database, by the computer software platform, input corresponding coal seam geological condition and drilling design parameter, realize the Automation Design of drilling in coal scheme, refer to, the foundation of above-mentioned four kinds of logical relations, for the design of projecting coal bed extraction borehole premolded package provides the Base data platform of science, for convenience of the engineering staff, use, bag develops software, set up the computer visualization operating platform.
7. a kind of projecting coal bed extraction borehole premolded package method for designing according to claim 1, it is characterized in that, in step (6): according to the concrete condition of Fang Suoyao job location, ore deposit, by above-mentioned software platform, input corresponding coal seam geological condition and drilling design parameter, realize the Automation Design of drilling in coal scheme.
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Cited By (5)

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CN105569724A (en) * 2015-12-11 2016-05-11 湖南科技大学 Method for optimizing outburst-prevention technical measures for coal and gas outburst mine
CN106640081A (en) * 2016-08-25 2017-05-10 中国黄金集团内蒙古矿业有限公司 Strip mine drilling and blasting design, construction and management method
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CN107944169A (en) * 2017-12-01 2018-04-20 中国石油化工股份有限公司 A kind of selection method of oil gas drilling drill bit
CN110094159A (en) * 2019-05-13 2019-08-06 中煤新集能源股份有限公司 Minery ground extraction gas drilling well well completion method is covered on working face

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CN101144389A (en) * 2007-04-06 2008-03-19 中国矿业大学 Gridding type layer-through drilling pore group permeability-increasing gas pumping method
CN101131091A (en) * 2007-07-26 2008-02-27 煤炭科学研究总院重庆分院 Down-hole coal bed air-pressing helix drilling tools and drilling method using the same
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105569724A (en) * 2015-12-11 2016-05-11 湖南科技大学 Method for optimizing outburst-prevention technical measures for coal and gas outburst mine
CN106640081A (en) * 2016-08-25 2017-05-10 中国黄金集团内蒙古矿业有限公司 Strip mine drilling and blasting design, construction and management method
CN106761903A (en) * 2016-12-27 2017-05-31 山西晋城无烟煤矿业集团有限责任公司 The compound crossing-hole gas extraction method of weak seam
CN107944169A (en) * 2017-12-01 2018-04-20 中国石油化工股份有限公司 A kind of selection method of oil gas drilling drill bit
CN110094159A (en) * 2019-05-13 2019-08-06 中煤新集能源股份有限公司 Minery ground extraction gas drilling well well completion method is covered on working face

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