Multimode test bed suitable for fourth generation and half and fifth generation rock breaking modes

Abstract

The invention discloses a multimode test bed suitable for fourth generation and half and fifth generation rock breaking modes and aims at solving the technical problem that a multimode synthesized test-bed which can simulate fourth-generation and half heading machines and fifth-generation heading machines under different confining pressure working conditions and measure the rock breaking effect isnot invented in the prior art. The multimode test bed comprises a retainer, wherein the retainer is provided with a confining pressure increasing device, a mechanical arm and an adjustable cutter head; the adjustable cutter head is in sliding connection with the retainer; the retainer is connected with foundations through a climbing cylinder; one end of the mechanical arm is connected with the retainer; and a spray nozzle is arranged at the other end of the mechanical arm. According to the invention, the test bed as a whole can develop the fourth-generation and half heading machines by carrying out coupling rock breaking tests of water jet-hobbing cutters, particle impacting-hobbing cutters, pulse discharge-hobbing cutters, laser-hobbing cutters and the like on different rocks under different confining pressures and different penetration degrees, or can separately develop the fifth-generation heading machines by carrying out the rock breaking tests on a novel rock breaking mode, and acquires and analyzes hubbing cutter data in a laboratory environment.

Description

technical field [0001] The invention relates to the field of tunnel construction, in particular to a multi-mode test bench suitable for the fourth-and-a-half-generation and fifth-generation rock-breaking methods. Background technique [0002] Future tunnel projects will face unprecedented complex geological conditions and construction environments, showing a development trend of long tunnel lines, large buried depths, and large cross-sections. A variety of surrounding rock types may appear in a single tunnel, and the surrounding rock pressure, strength and other indicators will also change accordingly. At present, in the field of rock tunnel excavation, TBM construction technology has the advantages of safety, high efficiency, and environmental protection, and has gradually replaced the traditional drill and blast method. However, when the TBM encounters high-strength hard rock, the hob is severely worn and the excavation efficiency is limited. For this reason, some people ...

AI Technical Summary

Problems solved by technology

The current new rock-breaking methods mainly include 25 new rock-breaking methods such as high-pressure water jet, laser, particle impact, and pulse discharge. Water jet, laser, particle impact, pulse discharge and other rock-breaking methods are supplemented by rock-breaking methods. The rock-breaking methods of the fifth-generation roadheader refer to high-pressure water jet, laser, particle impact, pulse discharge and other rock-breaking methods. A new rock-breaking method supplemented by a hob, but currently there is no multi-mode that can simulate real working conditions (such as the combined rock-breaking mode of the new rock-breaking method + hob, the simple new rock-breaking method of Rock mode) is a comprehensive test bench that can measure the rock breaking effect. Aiming at this problem, a multi-mode test bench suitable for the fourth and a half and fifth generation rock breaking methods has been invented.

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