文献[]提出一种增大提高排土场稳定性的方法，即麻面爆破，其原理是通过爆

The literature [] proposed a method to increase the stability of the dump site, namely pitted surface blasting. The principle is to make the sliding surface in the slope into an uneven shape through blasting to increase the friction of the sliding surface, which is economical , Safety and little impact on production. <br>In the large dip area of ​​the open-pit mine, in order to ensure sufficient and reliable inner row space and improve the feasibility of pitted blasting, when the coal steps are broken at the deepest part of the stope, the blasting hole has a certain ultra-depth value, and the bottom rock Slightly broken, the bottom rock is only broken in the area near the borehole. After the coal mining face is pushed, the soil is dumped in this area, as shown in Figure 2.

The literature proposes a method to increase the stability of the drain site, that is, hemp surface blasting, the principle of which is to make the slope body's sliding surface into a bumpy shape to increase the friction of the slope, which has the characteristics of economy, safety and small impact on production.<br>In the open-pit mine large inclination area, in order to ensure the adequacy and reliability of the inner row space, improve the feasibility of hemp blasting, in the deepest part of the quarry, coal steps for crushing, the blast hole has a certain ultra-deep value, while the bottom rock layer slightly broken, the bottom rock layer only drilling near the area broken, coal mining work surface pushed through the drainage in the area, as shown in Figure 2.

A method of increasing and improving the stability of waste dump, namely pitted blasting, is proposed in the paper. The principle is that the sliding surface in the slope body is changed into an uneven shape by blasting, so as to increase the sliding surface friction force. It has the characteristics of economy, safety and small impact on production.<br>In the large dip angle area of the open-pit mine, in order to ensure the sufficient and reliable inner drainage space and improve the feasibility of pitting blasting, when the coal bench is broken at the deepest part of the stope, the blasting hole has a certain super depth value, and the bottom rock layer is slightly broken, and only the area near the drilling hole is broken. After the mining face is pushed, the soil is dumped in this area, as shown in Fig. 2.<br>