冲旋作用下随钻测量系统研发与应用

Development and application of drilling measurement system under impulse spin action

硬岩巷道岩体性质是爆破参数设计的重要依据,快速获取岩体力学参数对提升巷道掘进效率至关重要。随钻参数与岩石性质有着密不可分的关系,随钻测量系统是监测钻机钻进过程中钻进参数的重要工具。通过随钻测量系统,可以实时掌握钻进过程中的钻压、转速、钻速等工程参数,进而分析实际钻进岩体性质,为爆破参数设计及优化提供参考。为了快速、准确地获取硬岩力学参数,在冲旋钻机基础上建立了具有冲击功能的智能随钻测量系统,该系统主要由智能钻进控制系统和智能感知系统组成,可对钻进速度、钻头转速、推进压力、旋转压力、冲击压力等多种随钻参数进行智能控制与实时监测。基于该系统开展了不同等级高强度岩石试样冲旋钻孔试验,讨论分析了不同钻进参数条件下钻具的响应性能以及各钻进参数之间的相互关系。试验结果表明:冲旋智能随钻测量系统控制性能稳定,智能感知系统监测数据有效可靠;随钻参数与岩石性质间响应关系具有显著规律性,不同强度岩石钻进参数响应最明显的是钻进速度,表明平均钻速与试件强度呈负相关。该系统可有效识别不同强度岩石,定量评价岩体力学参数,研究结果可为实时获取工程原位岩体力学参数提供一种新的方法。

The properties of hard rock tunnel rock mass are crucial for the design of blasting parameters,and the rapid acquisition of rock mechanics parameters is essential for tunnel excavation efficiency.Drill parameters are closely related to rock properties.In⁃drill measurement systems are important tools for monitoring drilling parameters during the drilling process.Through in⁃drill monitoring systems,real⁃time engineering parameters such as drilling pressure,rotation speed,and drilling speed can be obtained,al⁃lowing for the analysis of actual rock mass properties.This analysis serves as a reference for blasting pa⁃rameter design and optimization.To rapidly and accurately obtain hard rock mechanics parameters,this study,based on rotary⁃percussive drilling machines,developed an intelligent in⁃drill measurement system with impact functionality.This system primarily consisted of an intelligent drilling control system and an intelligent sensing system.It enabled intelligent control and real⁃time monitoring of various in⁃drill parameters,including drilling speed,bit rotation speed,thrust pressure,rotation pressure,and im⁃pact pressure.Using this system,the experiments were conducted on high⁃strength rock samples of dif⁃ferent grades under various drilling parameter conditions.The study analyzed the responsiveness of the drilling tools and the interrelationships among various drilling parameters.The experimental results dem⁃onstrated that the rotary⁃percussive intelligent in⁃drill measurement system exhibited stable control per⁃formance,and the monitoring data from the intelligent sensing system were valid and reliable.There was a significant regularity in the response relationship between in⁃drill parameters and rock properties.A⁃mong different strength rocks,drilling speed exhibited the most noticeable response,showing a negative correlation with specimen strength.This proved that the system effectively identified different strength rocks and quantitatively evaluated rock mechanics parameters.The research results provided a new meth⁃od for real⁃time acquisition of in⁃situ rock mechanics parameters in engineering.