Zobrazeno 1 - 10
of 25
pro vyhledávání: '"B. N. Smolyanitskii"'
Publikováno v:
Journal of Mining Science. 44:490-496
The authors consider how the impact frequency affects the penetration velocity of a metal case pipe and describe physical simulation of driving an element into soil by a pneumatic percussion device with step-wise adjustment of its impact frequency.
Publikováno v:
Journal of Mining Science. 43:640-645
The application efficiency of anchors with a lock made of granular materials to strengthen soil body slopes is substantiated. Mechanics of interaction between an anchor and the geomedium is considered. The techniques and machines preferable for the a
Publikováno v:
Journal of Mining Science. 43:611-617
A review is presented for the up-to-date special-purpose construction techniques for bar-re-enforcement of a soil mass, strengthening of soil foundations and removal of the defects in motor and railway roadbeds by injection. It is shown that a promis
Autor:
B. N. Smolyanitskii, I. V. Tishchenko
Publikováno v:
Journal of Mining Science. 43:489-498
The calculation model for the basic parameters of a tunnelling machine with a working organ of a bypassing type is developed based on the experimental data obtained. The specifications of machines for making holes with a diameter of 325–426 mm by a
Publikováno v:
Journal of Mining Science. 42:600-609
The physical scaled model is developed, the air-distribution system of the impact drive of the model is equipped with an elastic valve in the air supply system, and the drive provides step-by-step control of the impact pulse frequency under condition
Autor:
B. B. Danilov, B. N. Smolyanitskii
Publikováno v:
Journal of Mining Science. 41:566-572
The regularities of the relationship between residual advancing of a pipe driven into the ground and the parameters of the external influence on it are established. The basic research trends are formulated to raise the efficiency of impact action on
Autor:
V. V. Chervov, B. N. Smolyanitskii
Publikováno v:
Journal of Mining Science. 40:165-172
The disadvantages of devices for cyclic cleanup of a pipe from soil core during trenchless underground pipeline laying are shown. Three variants of the cleanup device movement towards the borehole bottom are analyzed. The methods are proposed for inc
Publikováno v:
Journal of Mining Science. 37:307-310
The design of experimental pattern is presented for the controlled pneumatic puncher. The results of its field test are given, and the values of radius are determined for the machine rotation in soil.
Publikováno v:
Journal of Mining Science. 37:411-415
Characteristics are considered for transmitting the strain wave excited in the compacted material due to the impact of one metallic body against the other one. The practical solution for great energy absorption in the experimental stands and parametr
Publikováno v:
Journal of Mining Science. 33:543-548
The following characteristics of self-transportation have been established. These results offer the possibility of further analysis of self-transportation, taking the characteristics of the specific generator of the internal active forces into accoun