High slope presplitting blasting construction method

Abstract

The invention discloses a high slope presplitting blasting construction method which comprises the following steps of compiling a slope presplitting blasting construction scheme, manufacturing a guide frame, erecting the guide frame, drilling a presplitting hole and a main blasting hole, charging powder into the presplitting hole, connecting a detonating network, carrying out presplitting blasting, and measuring the gradient of a slope by using a slope measuring device. According to the high slope presplitting blasting construction method, by arranging the guide frame, auxiliary positioning can be conducted on a drill rod, the precision degree of the drilling angle is guaranteed, so that over-excavation and under-excavation are better controlled, excavation is made to be within the design requirement range, the hidden danger that a high slope is prone to landslide is effectively prevented, and meanwhile, the straightness of the slope is guaranteed; bamboo chips are arranged in the pre-splitting hole, and an explosive cartridge is isolated from the slope surface, so that the impact effect on the slope surface in the detonating process is reduced, and the stability of the slope is guaranteed; and the slope measuring device is arranged, so that the vertical angle of the slope can be conveniently measured.

Description

technical field [0001] The invention relates to the technical field of high slope blasting construction. Specifically, it is a high slope pre-splitting blasting construction method. Background technique [0002] The blasting construction process involves a lot of content, among which blasting excavation with multiple steps on high slopes is a difficult point in engineering construction, especially in special environments such as complex terrain of the excavation line and large surface undulations, the traditional processing method is in On the edge of the pre-splitting design, the drilling angle is preliminarily estimated using the drilling rig inclination method, and the accuracy is poor. Overbreak and undercut are obvious in the blasting treatment area, and post-processing is difficult. After that, the stability of the slope is difficult to guarantee; and after the blasting, the traditional slope measurement device cannot be used to measure the slope conveniently, and whe...

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Problems solved by technology

[0002] The blasting construction process involves a lot of content, among which blasting excavation with multiple steps on high slopes is a difficult point in engineering construction, especially in special environments such as complex terrain of the excavation line and large surface undulations, the traditional processing method is in On the edge of the pre-splitting design, the drilling angle is preliminarily estimated using the drilling rig inclination method, and the accuracy is poor. Overbreak and undercut are obvious in the blasting treatment area, and post-processing is difficult. After that, the stability of the slope is difficult to guarantee; and after the blasting, the traditional slope measurement device cannot be used to measure the slope conveniently, and when measuring, the vertical angle and horizontal angle of the slope need to be measured twice separately, which has the advantages of certain inconvenience

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