Protolith abrasive water jet construction equipment in tunneling process

Abstract

The invention provides protolith abrasive water jet construction equipment in a tunneling process. The protolith abrasive water jet construction equipment comprises a sand storage tank, a rock slag treatment assembly, a water pump and a nozzle, and the sand storage tank is provided with a first inlet, a second inlet and an outlet; the rock slag treatment assembly is connected with the first inlet of the sand storage tank and used for inputting abrasives made of rock slag into the sand storage tank; the water pump is connected with the second inlet of the sand storage tank; and the nozzle is connected with the outlet of the sand storage tank. The protolith abrasive water jet construction equipment in the tunneling process has the beneficial effects that the protolith waste (namely the rock slag) is used for manufacturing the abrasives, continuous feeding of abrasive water jet can be achieved, the use cost of traditional abrasives can be saved, the construction cost is reduced, and the working performance is stable and controllable.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to raw rock abrasive water jet construction equipment in the tunnel excavation process. Background technique [0002] Abrasive water jet technology is developed from high-pressure water jet technology, which makes up for the shortcomings of high-pressure water jets that require ultra-high pressure. By adding solid particles to lower-pressure water jets, the cutting of steel or rock can be completed. It is a high-efficiency and energy-saving technology. The construction method has been more and more widely used in oil drilling and rock cutting. [0003] At present, tunneling is aimed at the rock formation, mainly relying on the disc-shaped hob to squeeze the rock to break the rock mass. It mainly overcomes the compressive strength of the rock, and its rock-breaking efficiency is aimed at the rock formation with general strength (within 100MPA). It is acceptable, but when...

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Problems solved by technology

[0005] However, there are certain problems in the application of abrasive water jet technology in tunnel construction, which also restrict the development of abrasive water jet: 1. The sand storage box will have a high pressure during the continuous feeding process, and it is generally difficult to carry out continuous feeding. At present, the method to solve this problem is generally to replace the larger sand storage box or terminate the continuous feeding. The larger sand storage box is not applicable due to the limitation of the site during the tunnel excavation process, and the termination of the continuous feeding will reduce the construction efficiency. Reduce and increase construction costs; 2. Abrasive water jets generally use special abrasives (garnet, garnet or quartz sand), which need to be purchased from outside and transported to the tunnel, and the cost of manufacturing and transportation is very high; 3. Special abrasives There is a service life, recycling and reuse will affect its cutting performance; using it once will cause waste of energy and pollute the environment

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