2results about How to "Random arrangement" patented technology

The invention belongs to the field of high-burial-depth underground space safety early warning and protection, and discloses a construction method and system for judging and distinguishing double-track tunnel micro-seismic parameter quantitative early warning rockburst grades, and the method comprises the steps: designing a micro-seismic monitoring system sensor arrangement method; wave velocity setting; judging the reliability of the monitoring effect of the same monitoring system on the double-track tunnel; comparing geological revelation conditions of the tunnel faces in the similar mileage sections of the double-track tunnel; determining rockburst grade classification and quantitative judgment criteria; distinguishing and establishing quantitative criteria of high-precision rockburst of each grade of the double-track tunnel; judging whether to distinguish and establish a rockburst early warning judgment standard; unifying tunnel early warning discrimination standard establishment methods; the reliability of the method is judged according to the occurrence condition of subsequent rockburst, and meanwhile the threshold value is perfected. According to the invention, two sections can be monitored at the same time through a set of microseismic monitoring system, so that half of manpower, material and financial investment is saved. The blank of establishing a quantitative criterion method for distinguishing micro-seismic monitoring and early-warning rockburst of the double-track tunnel under similar geological conditions in the same work area is filled, and the method has high practical value.

This utility model discloses an electric toy, including a base and a lamp body. A column is rotatably connected to the bottom of the base via an electric slip ring, and a rotating groove is fixedly installed on the top surface of the column. A tree body is fixedly installed on the top surface of the rotating groove, and a support rod is fixedly installed on the surface of the tree body. Beneficial effects: This utility model uses a power output coil and a power receiving coil. The power output coil is located in the rotating groove at the top of the base, generating an upward magnetic flux after being energized. The device is shaped like a Christmas tree, with the lamp body hanging on the support rod via a connector. The power receiving coil inside the bottom groove of the lamp body receives the magnetic flux generated by the power output coil, illuminating the lamp body through a rectifier circuit, thus providing a good decorative effect. Users do not need to supply power to the lamp body separately, improving ease of use. At the same time, it avoids the problem of cluttered surfaces caused by power supply lines, improving aesthetics. The lamp body can be arranged more freely, increasing playability.