To study the influence of roof cutting and pressure relief on the surrounding rock control effect of gob-side entry retaining. numerical simulation was carried out by UDEC software. and the stress and deformation characteristics law of roadway surrounding rock under two states of whether the lateral roof collapsed or not were analyzed. The results show that compared with the state of ... https://www.animationbengal.com/?w=quick-buy-yale-bulldogs-law-school-discount-great-price