典型文献
Switching mechanism and optimisation research on a pressure-attitude adaptive adjusting coal seam waterjet slotter
文献摘要：
To investigate the attitude-switching mechanisms of existing jet slotters,which integrate drilling,punch-ing and slotting operations,and to improve its fracture ability,we used the power bond diagram theory to analyse the dynamic flow pressure,and force of slotters.A mathematical model was developed for the dynamic characteristics of slotter systems.Furthermore,to study the effect of the main characteristic parameters on the ability of the nozzle to erode sandstone,multi-orthogonal experiments were carried out.And the optimised slots were applied in later practical operations.The research results show that the inlet fluid passed through the time-varying orifice to generate pressure differential thrust,which overcame the spring force,pushed the valve core to open the side nozzle,and closed the rear cavity chan-nel thereby realising the switch of the slotter attitude.An optimal plan was established to balance the diameter,depth,and volume of punching,and a rock-breaking plan was developed for the slotter.Subsequently,the optimised water jet slotter was practically used in coal seam gas drainage.Compared with conventional dense drilling,waterjet slotting technology significantly improves the abil-ity,efficiency,and effect of increasing the permeability of the coal seam.
文献关键词：
中图分类号：
作者姓名：
Yiyu Lu;Yangkai Zhang;Jiren Tang;Qi Yao
作者机构：
State Key Laboratory of Coal Mine Disaster Dynamics and Control,Chongqing University,Chongqing 400044,China;School of Resources and Safety Engineering,Chongqing University,Chongqing 400030,China
文献出处：
引用格式：
[1]Yiyu Lu;Yangkai Zhang;Jiren Tang;Qi Yao-.Switching mechanism and optimisation research on a pressure-attitude adaptive adjusting coal seam waterjet slotter)[J].矿业科学技术学报（英文版）,2022(06):1167-1179
A类：
slotter,slotters,slotting,realising
B类：
Switching,optimisation,research,pressure,attitude,adaptive,adjusting,coal,seam,waterjet,To,investigate,switching,mechanisms,existing,which,integrate,drilling,operations,its,fracture,used,power,bond,diagram,theory,analyse,dynamic,flow,force,mathematical,model,was,developed,characteristics,systems,Furthermore,study,effect,main,parameters,nozzle,erode,sandstone,multi,orthogonal,experiments,were,carried,out,And,optimised,slots,applied,later,results,show,that,inlet,fluid,passed,through,varying,orifice,generate,differential,thrust,overcame,spring,pushed,valve,core,open,side,closed,rear,cavity,nel,thereby,optimal,plan,established,balance,diameter,depth,volume,punching,rock,breaking,Subsequently,practically,gas,drainage,Compared,conventional,dense,technology,significantly,improves,efficiency,increasing,permeability
AB值：
0.540525
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机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
