Ground stabilization equipment

Claim 1

A mobile ground stabilization equipment including a traction and operating vehicle, an earth drill apparatus including an earth drill head, for injecting and mixing a pulverulent binding agent into the earth material during operation of the earth drill head, a supply tank for the pulverulent binding agent, and a device for receiving pressurized air and for feeding out and portioning the pulverulent binding agent blown by the pressurized air into and through a conduit leading from the tank to the earth drill head and through the earth drill head, said equipment including means in the traction and operating vehicle for recording the amount and distribution of pulverulent binding agent injected into the ground, comprising (a) a first device sensing and generating first signals in response to the passage of peripherally located indicating position devices on a rotatable element included in the drive for the earth drill head, the speed of said rotatable element depending upon the feeding movement of the earth drill head, (b) a weighing device, included in the mobile equipment, on which the tank rests between vertical guide means and by means of which the contents of the tank are weighed and second signals representative of changes in said contents are generated, (c) a recorder in which two inputs are driven by the first and second signals, respectively, for providing a graphic representation illustrating the successive weights of fed out binding agent per drilled length unit under ground level for successive holes, so that a picture of the binding agent distribution in vertical direction can be obtained over a large area.