The structural features and the layout design of ZDY4000L track-mounted hydraulic tunnel drilling rig is introduced,the situations of the industrial experiment,promotion and application are presented.

The paper presented the theoretical basis of fuzzy control on test bench for drilling rig performance parameters;discussed the fuzzy control system of test bench for tunnel drilling rig on principle,composition,performance index,testing parameters,anti-interference design and operation condition;and analyzed the development prospect for fuzzy control on drilling measuring and controlling.

Poor machining quality of drillpipe of coal roadway drilling machine and the cause of rupture on case are analysed.

Analysis of oil pollution and control measures for all hydraulic tunnel drilling rig

On the basis of the method of quality reduction and rigidity enforcement, a vibration control of farmland pit digging machine auger was studied.

It will beimportant and realistic to study dynamic performance of auger-bit when it works for tree deepplanting, to establish and perfect the dynamic theory systematically under the interactionbetween auger-bit and soil, to clear the.