Advance detection technology and development of fast intelligent roadway drivage

The development of intelligent mine has become a new trend.Under the condition of intelligent drivage,the advanced detection technology needs to provide guarantee for the safe operation of heading face.High detection accuracy and real-time prediction are required under fast drivage and complex geological conditions.Multi-sources and multi-fields information collection,big data intelligent analysis and transparent expression are the new development mode of advanced detection system construction.Combined with the development status of advanced detection technology in tunnel,roadway and other fields in recent years,the problems and trends of its method,technology and application are discussed.Based on the analysis of the key problems such as the complex geological problems and the limitation of basic technology selection in the development of the advanced detection technology of the fast intelligent drivage in the roadway,this paper puts forward that the technologies that can meet the requirements of the advanced detection of the fast intelligent drivage in the roadway are mainly the detection technology while tunneling and the detection technology in the super long borehole.In the aspect of key technology innovation,two kinds of advanced detection technology systems suitable for fast roadway drivage are given,which are the combination of seismic while tunneling technology with roadheader source and transient electromagnetic technology in super long borehole applied in coal roadway,and seismic while tunneling technology with TBM source and BEAM electrical method applied in rock roadway.The development thinking of each kind of basic advanced detection technology is given.Among them,on the basis of the original signal impulse,namely reconstitution processing,the technology of seismic while tunneling still needs to develop high-precision detection and fine imaging technology,such as full space three-dimensional detection,multi-wave multi-component method,full waveform inversion,polarization,scattering,etc.It is necessary to have a breakthrough in the basic research on the data characteristics of TEM signals in ultra-long borehole with or without anomalies.On this basis,the focus on the research should be wave field conversion,full space apparent resistivity inversion and other data processing and interpretation technology and applicable equipment.The short detection distance of BEAM electrical method while tunneling is the first problem to be solved in the future,and its high-precision data interpretation and inversion technology,real-time dynamic monitoring and quantitative prediction of water bearing abnormal body are also the focus and trend of research.Furthermore,in order to solve the problem of multiple solutions of geophysical prospecting methods,it is proposed to focus on the development of fusion interpretation technologies such as seismic body wave-channel wave joint inversion,seismic-electrical method joint inversion,and seismic-transient electromagnetic joint inversion.In the aspect of key technology application,it is proposed to build a massive basic database of geological support technology system,integrate 5G communication,big data,cloud platform and other intelligent technologies,build a big data analysis platform for the detection information of fully mechanized mining face,carry out multi-source data fusion and interaction,and realize the accurate prediction of the geological body in front.Then,it is proposed to make full use of the on line data provided by the real-time dynamic monitoring system of water bearing abnormal body and the detection system while tunneling,innovate the intelligent data interpretation methods,and develop the real-time processing and dynamic imaging technology of detection results to improve the detection timeliness.Through the double breakthrough of abnormal identification accuracy and speed,the fast intelligent development of drivage is promoted.On this basis,the high-precision three-dimensional drivage geological geophysical model is constructed,which improves the degree of geological transparency in advance of roadway,and the 3D spatial geological conditions of the roadway are dynamically displayed,which provides an accurate geological support for fast intelligent drivage.