基于改进多目标粒子群算法的煤矿钻杆优化方法研究.pdf

万方数据 中图分类号TD41学校代码10424 UDC621密级公开 山东科技大学 工程硕士学位论文 基于改进多目标粒子群算法的煤矿钻杆优化方法研究基于改进多目标粒子群算法的煤矿钻杆优化方法研究 Study on Optimization of Drill Pipe in Coal Mine Based on Improved Multi-objective Particle Swarm Algorithm 作者马国芳入学时间2017 年 9 月 导师李东民职称副教授 申请学位工程硕士所在学院 机械电子工程学院 副 导 师王忠勇职称高级工程师 学科（类别） 工程硕士方向（领域）机械工程 答辩日期2020.06.13提交日期2020.06.17 万方数据 万方数据 万方数据 万方数据 摘摘要要 松软突出煤层的煤与瓦斯突出现象一直是威胁煤矿安全生产的重大问题，目前普遍 采用肋骨钻杆在煤壁的特定位置区域钻孔排瓦斯以解决煤与瓦斯突出问题。但钻孔施工 经常由于煤粉阻塞而引起卡钻，从而带来的成孔率低、钻进效率低、成孔深度受限等问 题，严重影响了瓦斯治理的效率。为解决以上问题，本文对基于改进多目标粒子群算法 的煤矿钻杆优化方法展开研究。 针对松软突出煤层钻孔施工复杂工况，对引起卡钻的物理因素、地质因素、机械因 素进行分析，得到导致卡钻的可优化因素，主要包括钻杆的结构与钻杆钻进速率。 基于松软突出煤层钻孔施工工况，分析肋骨钻杆机械排粉机理。基于肋骨钻杆单位 时间机械排粉量和输送能耗的计算公式建立目标函数，采用改进多目标粒子群算法对肋 骨钻杆结构参数进行优化。采用 EDEM 软件对优化后的钻杆排粉过程进行仿真，仿真结 果表明优化后钻杆的单位时间机械排粉量增大且排粉能耗降低。 采用计算流体动力学理论，分析肋骨钻杆流体排粉机理，建立流体排粉时煤粉临界 速度的数学模型，并通过实验确定最优临界风速。采用气固两相流理论，建立与分析肋 骨钻杆排粉过程所需的供风压力表达式，得到供风压力等于肋骨钻杆风力排粉压力损 失。 基于排粉过程中的煤粉受力状况建立煤粉颗粒群的运动模型，推导出肋骨钻杆理想 状态下单位时间排出煤粉质量的计算公式；建立肋骨钻杆单位时间产生煤粉质量的数学 模型， 根据钻杆正常钻进时单位时间内的产粉质量与单位时间内的排粉质量的数值关系， 得出肋骨钻杆的理想钻进速率。根据钻孔施工实际工况，搭建肋骨钻杆排粉过程模拟实 验台。通过实验对理想钻进速率进行测试并修正，得到可保证钻进效率最高的同时也能 有效避免排粉通道阻塞的钻杆最优钻进速率。 基于肋骨钻杆机械排粉与流体排粉的优化结果，设计并加工了一种新型肋骨钻杆， 采用该钻杆在陕西省象山煤矿进行钻孔排瓦斯试验。与原钻杆钻孔施工效果相比单位 时间平均煤粉排出量提高 31.5，成孔率提高 19.4，每孔平均钻进深度提高 39.8m，因 此，本文所提出的钻进优化方案提高了钻进效率，极大地降低了由于煤粉阻塞引起矿井 卡钻发生的几率。 关键词关键词肋骨钻杆；改进多目标粒子群算法；机械排粉；气固两相流；钻孔排瓦斯 万方数据 Abstract Coal and gas outburst in soft outburst coal seam has always been a major problem threatening the coal mine safety production.At present, using the rib drill pipe to drill a holes in specific areas of coal wall for draining gas is a commonly to solve the problem of gas outburst. However, coal blocking often leads to sticking drilling in the process of drilling, resulting in low hole ation rate, low drilling efficiency, restricted hole ation depth and other problems, which seriously affect the efficiency of gas treatment. In order to solve the above problems, this paper studies optimization of drill pipe in coal mine based on improved multi-objective particle swarm optimization. Aiming at the complex working conditions of drilling in soft and outburst coal seam, the physical factors, geological factors and mechanical factors of sticking are analyzed. The factors that can be optimized to cause sticking are deduced, including the structure of rib drill pipe and drilling rate of rib drill pipe. Based on working conditions of drilling in soft and outburst coal seam, The mechanism of mechanical slag discharge of rib drill pipe is analyzed. According to the ula of the quantity of mechanical slag discharge per unit time pipe and the transport energy of rib drill pipe, the objective function is established. The structural parameters of rib drill pipe are optimized by the multi-objective and improved particle swarm algorithm. EDEM is used to simulate slag discharge process of the optimized drilling pipe. The simulation results show that the transport energy of rib drill pipe not only can be reduced, but also the amount of slag discharge per unit time of rib drill pipe is increased. The theory of computational fluid dynamics is used, the mechanism of fluid discharge from rib drill pipe is analyzed, and the mathematical model of critical velocity of pulverized coal is established. The optimal critical wind velocity was determined by experiments. The theory of gas-solid two-phase flow is used, the air supply pressure required by rib drill pipe pulverizing process is established and analyzed, and the air supply pressure is equal to pressure loss of rib drill pipe pulverizing process. Based on the force condition of the coal in slag discharge process, The motion model of a group of coal particles is established. The ula of the quantity of slag discharge per unit time pipe under the ideal state is deduced, and the mathematical model of the quantity of the coal produced per unit time is established. According to the numerical relationship between the quantity of slag discharge and the quantity of the coal produced per unit time during the normal drilling of the rid drill pipe, the ideal drilling velocity of rib drill pipe is obtained. According to the actual working conditions of drilling, a simulation plat for rib drill pipe 万方数据 of slag discharge process is designed and built. The ideal drilling velocity is tested and amended by the experiment. The optimal drilling velocity is obtained, which can guarantee the highest drilling efficiency and effectively avoid the slag blocking. Based on the optimization results of mechanical and fluid slag discharge of rib drill pipe, A new rib drill pipe was designed and machined. The rib drill pipe is used to carry out drilling experiment to release in Xiangshan coal mine of ShanXi province.Compared with the original drill pipe drilling effect, the average of the quantity of slag discharge per unit time of the new rib drill pipe increased by 31.5, the probability of pore ation increased by 19.4, and the average drilling depth per pore increased by 39.8m. The optimization scheme proposed in this paper improves drilling efficiency and greatly reduces the possibility of sticking due to coal blocking. Key words Rib drill pipe; Mechanical-power slag discharge; Multi-objective and improved particle swarm algorithm; Gas-solid two phase flow; The release of gas of drilling 万方数据 目目录录 图清单..............................................................................................................................................I 表清单........................................................................................................................................... III 变量注释表...................................................................................................................................IV 1绪 论......................................................................................................................................... 1 1.1课题的研究目的和意义.....................................................................................................1 1.2国内外研究现状.................................................................................................................2 1.3肋骨钻杆排粉技术研究存在的问题.................................................................................6 1.4研究内容及技术路线.........................................................................................................6 1.5本章小结.............................................................................................................................8 2矿井卡钻机理分析................................................................................................................... 9 2.1卡钻物理因素分析.............................................................................................................9 2.2卡钻地质因素分析...........................................................................................................10 2.3卡钻机械因素分析...........................................................................................................15 2.4本章小结...........................................................................................................................19 3肋骨钻杆机械排粉优化......................................................................................................... 20 3.1肋骨钻杆参数优化方法...................................................................................................20 3.2肋骨钻杆结构参数优化...................................................................................................21 3.3改进多目标粒子群算法...................................................................................................23 3.4优化后的肋骨钻杆机械排粉研究...................................................................................29 3.5本章小节...........................................................................................................................39 4肋骨钻杆流体排粉优化......................................................................................................... 39 4.1肋骨钻杆流体排粉力学分析...........................................................................................40 4.2最优临界风速与供风压力的确定...................................................................................41 4.3最优钻进速率的确定.......................................................................................................46 4.4本章小结...........................................................................................................................52 5钻孔施工矿井试验................................................................................................................. 53 5.1新型肋骨钻杆的设计.......................................................................................................53 5.2新型肋骨钻杆钻孔试验...................................................................................................53 5.3本章小结...........................................................................................................................57 6总结与展望............................................................................................................................. 58 万方数据 6.1总结...................................................................................................................................58 6.2展望...................................................................................................................................59 参考文献 作者简历 致谢 学位论文数据集 万方数据 Contents List of Figures.................................................................................................................................I List of Tables............................................................................................................................... III List of Variables...........................................................................................................................IV 1Introduction..............................................................................................................................1 1.1Research purpose and significance..................................................................................... 1 1.2Research status at home and abroad....................................................................................2 1.3Problems in research of slag discharge of rib drill pipe......................................................6 1.4Research content and technical route..................................................................................6 1.5Summary.............................................................................................................................8 2Analysis of the mechanism of mine sticking..........................................................................9 2.1Analysis of physical factors of sticking..............................................................................9 2.2Analysis of geological factors of sticking.........................................................................10 2.3Analysis of mechanical factors of sticking....................................................................... 15 2.4Summary...........................................................................................................................19 3Optimisation of mechanical slag discharge of rib drill pipe..............................................20 3.1s of parameter optimization of rib drill pipe.........................................................20 3.2Optimizations of structure parameter of rib drill pipe...................................................... 21 3.3Improved multi-objective particle swarm algorithm.........................................................23 3.4Study on mechanical slag discharge of optimized rib drill pipe.......................................29 3.5Summary...........................................................................................................................39 4Optimisation of fluidic slag discharge of rib drill pipe.......................................................40 4.1Mechanical analysis of fluidic slag discharge of rib drill pipe......................................... 40 4.2Determination of the optimal critical wind velocity and wind pressure...........................41 4.3Determination of the optimal drilling velocity ................................................................46 4.4Summary...........................................................................................................................52 5Test of drilling in mine.......................................................................................................... 53 5.1Design of the new rib drill pipe.........................................................................................53 5.2Drilling test of new rib drill pipe.......................................................................................53 5.3Summary...........................................................................................................................57 6Summary and Prospect.........................................................................................................58 万方数据 6.1Summary...........................................................................................................................58 6.2Prospect.............................................................................................................................59 References Authors Resume Ackonwledgements Thesis Data Collection 万方数据 I 图清单 图序号图名称页码 图 1.1技术路线 8 Fig.1.1Technology route 8 图 2.1“钻洞”示意图10 Fig.2.1Sketch map of rib drill ripe 10 图 2.2钻孔周围煤体应力分布11 Fig.2.2 The stress distribution of coal around the borehole11 图 2.3 钻孔周围煤体力学模型12 Fig.2.3Force model of coal around drilling12 图 2.4 外平钻杆15 Fig.2.4 Flat drill pipe15 图 2.5螺旋钻杆16 Fig.2.5Spiral drill pipe 16 图 2.6三棱钻杆 17 Fig.2.6Triangular drill pipe 17 图 2.7外平钻杆与三棱钻杆排粉效果对比图 17 Fig.2.7 The comparison of the effect of slag discharge of flat drill pipe and triangular drill pipe 17 图 2.8刻槽钻杆 18 Fig.2.8Grooved drill pipe 18 图 2.9肋骨钻杆 18 Fig.2.9Rib drill pipe18 图 3.1粒子群算法过程 24 Fig.3.1Process of particle swarm algorithm 24 图 3.2改进粒子群算法过程 26 Fig.3.2Process of improved particle swarm algorithm 26 图 3.3适应度曲线28 Fig.3.3Fitness curve 28 图 3.4功能结构简图29 Fig.3.4Functional structure diagram 29 图 3.5EDEM 循环运算逻辑关系图 30 Fig.3.5Looping operations on logical relationships of EDEM 30 图 3.6煤粉试样 32 Fig.3.6The coals32 图 3.7筛网和煤粉堆 32 Fig.3.7The screen mesh and coals 32 图 3.8颗粒模型 34 Fig.3.8Slag model 34 图 3.9排粉过程模型35 万方数据 II Fig.3.9The model of slag discharge35 图 3.10仿真排粉过程 37 Fig.3.10The process of simulation of slag discharge37 图 3.11未优化肋骨钻杆排出煤粉统计图 38 Fig.3.11Statistical chart of pulverized coal discharge from unoptimized drill pipe 38 图 3.12肋骨钻杆排出煤粉统计图 38 Fig.3.12Statistical chart of pulverized coal discharge from unoptimized drill pipe 38 图 3.13排粉速率对比图39 Fig.3.13The comparisons of rate of slag discharge 39 图 4.1肋骨钻杆示意图 40 Fig.4.1Sketch map of rib drill ripe 40 图 4.2煤粉颗粒受力示意图 41 Fig.4.2Sketch map force of slag par