Shield tunneling machine (svm) and a method for loosening and / or comminution of stones in a svm

摘要

With the following features svm:– The jacket of the svm is closed off towards the front by means of a bulkhead,– in front of the thrust wall and at a distance from the latter is arranged at least one cutting rotor by a drive shaft guided through the bulkhead can be driven in rotation, wherein between the cutting rotor and the empty pressure wall is formed;– downstream of the bulkhead is a pipe feed system is arranged for conveying of the soil material in front of the thrust wall into a region behind it;– the pipe feed system has at least one of a tubular guide tube, which is guided by a first linear drive can be moved parallel to the axis of the svm is;– the thrust wall has at least one opening, to which the end of the tube is aligned and the of a slide can be selectively opened or closed;– the linear drive is constructed in such a way that in the pipe advances in a forward position with the front end of the tube in or on the opening or through the opening and pushes it back into a rear position, in which the front end of the tube an opening in the tubular guide releases;– a piston is arranged in the tube, which can be driven by a second linear drive and with which the form of tube soil material taken up by means of the opening of the pipe promotion is pushed out when the tube in the rear position, characterized by the further feature:In the stripping chamber at least one mixing rotor is arranged which, in front of a shaft coaxial or parallel to the drive shaft is drivable and the soil material in the stripping chamber and thoroughly mixed rearranged.