The present invention relates to a loaded-to-frame detection equipment for backfill grouting of a shield tunnel, including an automatic loaded-to-frame transmission apparatus, a ground penetrating radar, and an intelligent backfill grouting processing and analysis software. The equipment is integrated by using software and hardware, and can implement real-time visual detection of a backfill grouting layer in a shield construction process. The loaded-to-frame automatic transmission apparatus mainly includes a track, a synchronous belt, a transmission mechanism, a servo machine, and a drive and reducer; and a new air-coupled radar detection apparatus is carried on the loaded-to-frame automatic transmission apparatus and is installed on a shield frame. With the shield performs tunneling, circular detection on a grouting body of the shield and visual layered display of the grouting body are implemented.

A stress-transfer method in tunnel with high ground pressure based on fracturing ring. According to the stress source of the tunnel, fracturing by drilling holes to form artificial weaken zones in surrounding rocks, that's named fracturing ring. The fracturing ring is the weaken zone with some width, whose inner boundary is the protective circle. The fracturing ring with small width is called the cutting and interruption circle and the cutting or interruption arc. The radius of the protective circle is determined by setting a certain width of safety coal pillar barriers at the edge of a support body. The radius of the fracturing ring is determined by the surrounding rock structure and the stress conditions as well as the construction technology. Usually, the higher the stress, the wider the radius of the fracturing ring. The cutting and interruption circle or arc could cut off all of the targeted rock which transmits the stress.

A system and method for drilling a borehole using a drilling rig having a rotary drill bit includes monitoring one or more drilling parameters; determining whether the one or more monitored drilling parameters are within predetermined specifications for one or more of the monitored drill parameters; and, executing an exception control procedure for control of a drilling parameter. The exception control procedure receives an input sensor value associated with a drilling parameter and applies feedback control to establish a scaled error value that is used to compute a setting value for the drilling parameter. The drilling parameters controlled may include the rotation speed of the drill bit, the feed rate of the drill bit, the weight-on-bit, or rotation torque during retraction of the drill bit. A computer-readable database of specifications of drill bits may be provided as a part of the system.

Disclose are a roadway/tunnel excavation robot and an automatic cutting control method. The robot includes a rack, a moving platform, a supporting and stabilizing mechanism, a milling mechanism, a telescoping mechanism, an inclined cutting feed adjusting mechanism, a horizontal swinging mechanism, a lifting mechanism and a controller. The milling mechanism includes a drive unit, a milling shaft, an eccentric rotary casing, a high-pressure jet nozzle unit, a tension and compression sensor and a direction sensor. Through the deflection of a center line of an inner hole of the eccentric rotary casing, the milling mechanism drives a milling cutter head to carry out a rotational oscillation motion for rock breaking; and the milling cutter head is in discontinuous contact with a rock mass. The telescoping mechanism, the inclined cutting feed adjusting mechanism, the lifting mechanism and the horizontal swinging mechanism are controlled such that the milling mechanism performs coal rocks milling.

An apparatus and method for assigning drill holes. The apparatus is arranged to determine a forthcoming position of a bottom of a new drill hole before it is drilled. The forthcoming position of the drill hole bottom is determined on the basis of the current location and direction of a tool and a planned length of the drill hole.

The present invention relates to a grouting apparatus. In detail, the present invention provides a grouting apparatus which injects a reinforcing material into an object in which an injection hole into which the reinforcing material is injected is formed, the grouting apparatus including: a pumping unit which pumps the reinforcing material to be injected into the object; an injection pipe which has one side connected to the pumping unit, and the other side inserted into the injection hole, and injects the reinforcing material conveyed by the pumping unit into the object; a vibration generating unit which generates vibration; and a vibration wire which has one end coupled to the vibration generating unit, and the other end extending along the injection pipe and coupled to a tip of the injection pipe, and transmits the vibration generated by the vibration generating unit to the injection pipe.

Methods of delivering inhibited emulsions are provided. The methods can include mixing an emulsion with a separate inhibitor solution to form the inhibited emulsion. Inhibitor solutions including water, an inhibitor, and a crystallization point modified are provided. Systems for delivering inhibited emulsions are also provided.

The invention provides a machine for tunnelling in rock. The machine includes a pilot drill assembly for drilling a series of interfering parallel holes or a pilot hole into and generally perpendicular into a rock face and a blast hole drill assembly for drilling a series of blasting holes around the pilot hole or previous blast hole. The machine further includes a charge handling and loading assembly for loading the first series of holes with propellant charges and an ignitor system for igniting the charges. Included further is a rock clearing means for removing the blast rock from the blast face and a rock pick for clearing and picking the floor, roof or walls to provide access for the machine into the tunnel and a mobility assembly for moving the machine forward. Also included is a control console provided with control means for controlling the pilot drill assembly, blast hole drill assembly, charge handling and loading assembly, ignitor system, rock clearing means, the rock pick, a measure system for gas detection and management, a rock stress measure system and recording system.

Systems for drilling or tunneling include an assembly for accelerating a projectile through a first conduit into a region of geologic material, which generates debris. The debris may be reduced in size by moving the debris to a crushing device located in a second conduit using a conveying device, such as an auger. The reduced-size debris is then moved toward the surface using fluid movement. A third conduit may be used to provide and remove material from the bottom of the first conduit to control pressure at the end of the conduit to prevent ingress of material into the first conduit. Water jets or other types of devices may be used to cut or deform a perimeter of a region of geologic material before the projectile is accelerated to control the shape of the borehole and the manner in which debris is broken from the geologic material.

The prevent invention provides a tunnel excavation apparatus including: an excavation part configured to excavate a tunnel; a path part installed on a bottom of an excavation surface of the tunnel; an expanded blasting part configured to expand the tunnel; a protective shield part installed to protect the inside of the tunnel between the excavation part and the expanded blasting part; and an expansion part installed on the protective shield part to block a gap between the tunnel and the protective shield part and including an expansion tube provided as a plurality of layers, and the expansion part installed in the protective shield part may be improved in durability to stably block a gap between the tunnel and the protective shield part.