In the mining and sawing operations in the mine, when the cutting surface enters the final stage, the old wire saw must be used to replace the wire saw in use .This is because in the final stage of cutting, especially the final stage of horizontal cutting, the connection area between the ore body and the separated body is relatively small, and only the steel wedge inserted between the horizontal plane is not enough to support the separation body, so it is difficult to ensure that the separation body will not collapse, leading to the accident of the beaded rope being pressed in the saw joint and scrapped. Especially for ore bodies with relatively developed fissures, local rock collapse in the separated bodies often occurs. Even if it is vertical cutting or block trimming cutting, the wire saw may be crushed in the saw gap and scrapped due to the side slip and dumping of the separated body. If a new wire saw or a wire saw with a certain service life is used to saw the last connection surface, encountering such an accident, the whole or most of the wire saw will be scrapped and unnecessary economic losses will be caused.
U zavisnosti od različitih situacija, vrijeme zamjene je općenito tijekom horizontalnog piljenja. Kada se razmak između žičane pile koja ulazi i izlazi iz proreza pile smanji na 1,5-2,5 metara, zamijenite žičanu pilu koja je u upotrebi starim žičanim užetom koje je skoro otpalo i nastavite sa odvajanjem i rezanjem završne površine spoja pile. rudno tijelo i izdvojeno tijelo. Završna faza sečenja vertikalnih ravnina ili dezintegracije i podrezivanja rezanja također zahtijeva ovu vrstu operacije zamjene starih užadi novim. Ako je pozicija vodećeg točka pravilno postavljena, staro žičano uže može čak i direktno prorezati prorez bez ostavljanja spojnog dijela, tako da površina reza bude ravna, a izbjegava se da kada se odvoji završni spojni dio, jedan strana će biti udubljena, a druga strana će biti podignuta, što će uticati na formiranje bloka.
