Ensuring the transverse stability of the shield powered support unit when excavating shallow and inclined coal seams

The results of studies of the transverse stability of single-row and double-row shield powered support units and their stabilizing devices, when excavating bed seams and middle shallow and inclined coal seams, are presented. At the same time, widely used compression springs installed on pushers of the sliding sides of the overlap and rear guard were considered as a stabilizing device. It is established that the effective use of compression springs is possible only when excavating bed and middle shallow coal seams. When excavating inclined coal seams, especially of middle seam, the efficiency of using compression springs as stabilizing devices drops sharply. The use of the sliding sides of the overlap and the rear guard with hydraulic blocks installed on their piston cavities, in which safety and discharge valves are integrated is justified as a stabilizing device for hydraulic jacks. The dependence of the setting of the hydraulic jack safety valve on the horizontal component of the force of the hydraulic struts of the support unit is established. At the same time, when the support unit is spaced, the force on the hydraulic jacks of the retractable sides should not be lower than the force holding the unit. A method has been developed for determining the actuation pressure of the safety valve of hydraulic jacks, i.e. the specified load of the sliding sides providing transverse stability of the single-row and double-row shield powered support unit.

Turuk Yu. V., Sysoev N. I., Lugantsev B. B., Streltsov S. V., Bogomazov A. A. Ensuring the transverse stability of the shield powered support unit when excavating shallow and inclined coal seams. MIAB. Mining Inf. Anal. Bull. 2023;(4):157-167. [In Russ]. DOI: 10.25018/0236_1493_2023_4_0_157.

Yu.V. Turuk¹, Dr. Sci. (Eng.), Assistant Professor, Professor, e-mail: uraturuk@mail.ru, ORCID ID: 0000-0002-4257-0744,
N.I. Sysoev², Dr. Sci. (Eng.), Professor, e-mail: sysoevngmo@gmail.com, ORCID ID: 0000-0002-0372-427Х,
B.B. Lugantsev², Dr. Sci. (Eng.), Assistant Professor, Professor, e-mail: boris4721@mail.ru, ORCID ID: 0000-0002-8296-7922,
S.V. Streltsov¹, Cand. Sci. (Eng.), Assistant Professor, e-mail: streltcov_s@rambler.ru, ORCID ID: 0000-0003-4989-4327,
A.A. Bogomazov¹, Cand. Sci. (Eng.), Assistant Professor, e-mail: sbog@rambler.ru, ORCID ID: 0000-0002-7176-3393,
¹ Shakhty Road Institute, Branch of Platov South-Russian State Polytechnic University (NPI), 346500, Shakhty, Russia,
² Platov South-Russian State Polytechnic University (NPI), 346428, Novocherkassk, Russia.

Yu.V. Turuk, e-mail: uraturuk@mail.ru.

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