为了研究露天煤矿采用麻面爆破方法处理基底后排土场的变形破坏机理，通过理

In order to study the deformation and failure mechanism of the dump site after the surface coal mine is treated by the puffed surface blasting method, the relationship between the friction force and the treatment area ratio is studied through theoretical calculations, and the deformation law and failure mechanism, as well as the treatment The influence of regional proportion and degree of dispersion on the two. <br>The research shows: <br>(1) The effect of treating different areas of the basement to improve the stability of the dump is different, and the effect of area II is better. <br>(2) The stability coefficient is a quadratic function of the ratio of the processing area. <br>(3) Numerical simulation and on-site investigations show that the dumping pan is stretched, and the deformation of the slope is easily affected by the ratio of the treatment area, but when it increases to a certain value, the displacement change is very small, and the failure mode changes from creep to tensile fission Is creepy. <br>(4) The influence of the dispersion degree of the treatment area on the slope deformation and potential slip mode is similar to the treatment area ratio.

In order to study the deformation and destruction coefficient of the back row soil field of the base by using the hemp blasting method in the open-pit coal mine, the relationship between friction and the ratio of the processing area is studied by theoretical calculation, and the deformation law and destruction coefficient are discussed through survey and numerical experiment, as well as the influence of the proportion and dispersion of the processing area on both.<br>Studies have shown that:<br>(1) The effect of treating different areas of the substrate to improve the stability of the drain site is different, and the effect of II.<br>(2) The stabilization coefficient is a secondary function that processes the region ratio.<br>(3) Numerical simulation and field survey show that the drain flat disk is pulled, slope deformation is susceptible to the influence of the processing area ratio, but when increased to a certain value, the displacement change is very small, and the damage mode changes from creep-pull to creep.<br>(4) The degree of dispersion of the processing area has a similar effect on slope deformation and potential slip mode and the ratio of the processing area.

In order to study the deformation and failure mechanism of open-pit coal mine with pit blasting method, the relationship between friction force and the ratio of treatment area is studied by theoretical calculation. The deformation law and failure mechanism are discussed through investigation and numerical experiment, as well as the influence of treatment area ratio and dispersion degree on them.<br>Research shows:<br>(1) The effect of improving the stability of waste dump in different areas of basement is different, and the effect of zone II is better.<br>(2) The stability coefficient is a quadratic function of the region ratio.<br>(3) Numerical simulation and field investigation show that the deformation of the slope is easily affected by the ratio of treatment area when the flat plate is tensioned. However, when it increases to a certain value, the displacement changes little, and the failure mode changes from creep cracking to creep.<br>(4) The influence of dispersion degree of treatment area on slope deformation and potential slip mode is similar to that of treatment area ratio.<br>