Roadheader for rock breaking.
The use of tunneling machines allows to combine in time the most difficult and time-consuming operation (destruction of the face and the subsequent cleaning of the rock mass), which gives the opportunity to increase in 2-2,5 times the pace of excavations and productivity, reduce the cost of tunnelling works and greatly facilitate and protect the work of the tunnellers. However, when you combine the way of carrying out significantly increases the stability of mine workings.
Roadheader — a multifunctional mining machine, providing automated execution of a large number of main and auxiliary operations workflows holding and fixing of preparatory workings, is intended for the mechanized destruction of mining rocks coal mines, mines, and tunnels in the construction of underground structures, the subsequent loading rock into vehicles (trucks, conveyor, loader).
The use of tunneling machines allows to combine in time the most difficult and time-consuming operation (destruction of the face and the subsequent cleaning of the rock mass), which gives the opportunity to increase in 2-2,5 times the pace of excavations and productivity, reduce the cost of tunnelling works and greatly facilitate and protect the work of the tunnellers. However, when you combine the way of carrying out significantly increases the stability of mine workings, as the coupling species in the mountains is disturbed to a lesser extent than during drilling and blasting operations, which reduces the cost of maintenance of workings.
Combine the way of the workings of the most progressive, as it combines in time the basic operation and conduct production proceeds as an ongoing process.
All tunneling machines equipped with dust suppression.
– increase the pace of work and productivity in 2-2,5 times,
– reducing the cost of the tunnelling works,
the relief and security of the workers – drifters,
– the combination of a large number of main and auxiliary working operations
– mechanization of working operations
– improving the stability of mine workings,
– reducing the costs of maintaining the mine workings.
Tunneling machines klassificeret the following main features:
– the method of slaughter processing Executive body, election (cyclic) actions with sequential processing of bottom and drilling (continuous) action with a simultaneous treatment of the whole surface of the mine;
– destroy the fortress of the massif – for work on coal and ore with weak interlayers and weak prisechkoj rocks with f <= 4, for rocks of medium strength with f = 4…8, and in hard rocks with f > 8;
– areas of application – for the main and auxiliary preparatory workings for commercial minerals and on the mixed mine, the main capital and preparatory workings and tunnels on the breed and rifled works on commercial minerals;
– on the sectional area of the driven working (in excavation) – from 5 to 16 m3, 9 to 30 m2 and 30 m2.
The diversity of geological conditions and experience with various types of tunneling machines show that it is necessary to develop and improve tunneling machines as selective and drilling action.
Tunneling machines with the Executive of the electoral bodies are mainly used when carrying out excavations in rocks with f <= 8, if you want to change in a wide range of sizes and shapes of cross-sections of mine workings and at the separate recess of the mountain.
Drilling, tunneling machines, continuous, in comparison with harvesters selective action is used for holding round or arched workings of one section in rocks of different strength.
Among tunneling refers to the underground robot multi-purpose “Geokhod”.
The main working tools of tunneling machines are enforcement – equipment intended for destruction of the mountain range. On the constructive characteristics of the Executive bodies are divided into two main groups: selective (moving in one or two planes) and drilling – rotary and planetary. The main distinguishing feature of these two groups is the different way of breaking mine. The election administration process at the same time only a part of the bottom, while drill – entire face.
Other working tools of tunneling machines include a chassis, a loading unit, the spacer equipment, etc.
Roadheader is used for mechanization of the following operations:
– the destruction of the rock,
– loading destroyed the breed,
– mount output,
– shipping of the destroyed rocks
– the movement of the harvester and means of complex,
– the dust extraction,
– the ventilation of the mine,
– delivery of tools and materials fixing
– conducting drain grooves.
Note: © Photo .