Rockburst danger-relieving method based on hydraulic mechanical splitting

Abstract

The invention provides a rockburst danger-relieving method based on hydraulic mechanical splitting, and belongs to the technical field of mining industries and geotechnical engineering safety prevention and control. According to the rockburst danger-relieving method, a hydraulic splitting machine is arranged and comprises a hydraulic pump station and a splitting device. The rockburst danger-relieving method further comprises the following steps that 1, a surrounding rock zone with rockburst tendency is determined, and a rockburst danger zone is determined; 2, a splitting point location is determined according to the rockburst danger zone; 3, the splitting direction is determined; 4, hole drilling construction is conducted according to the splitting point location; 5, splitting is conductedby utilizing the splitting machine according to the hole drilling position; 6, whether splitting of all drilled holes is completed or not is judged; and 7, all the steps are finished. The rockburst danger-relieving method based on hydraulic mechanical splitting is used for conducting splitting on the drilled holes in surrounding rock of a high danger zone by utilizing the hydraulic splitting machine, has high safety, reliability and economy, and meanwhile, has the advantages of easy operation and convenient construction.

Description

technical field [0001] The invention discloses a rockburst hazard relief method based on hydraulic mechanical splitting, which belongs to the technical field of safety prevention and control of mining and geotechnical engineering. Background technique [0002] After the excavation of hard rock roadways or tunnels, one of the biggest problems encountered is rockburst. Due to its sudden and dynamic characteristics, it not only poses a direct threat to underground construction personnel and equipment, but also affects the construction progress. Can cause overexcavation, support failure, and even earthquakes. As the development of underground space and resource mining continue to go deep, the frequency and intensity of rockbursts have increased significantly, engineering disasters caused by excavation have become increasingly serious, and safety issues need to be resolved urgently, which has become a major technical bottleneck in my country's future deep underground projects que...

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, in order to ensure safety, prevention and control measures must be taken against rockburst hazards. At present, the main measures for the prevention and control of rockbursts in surrounding rocks are: 1) Adopt short-footage and weak blasting methods to reduce disturbance to surrounding rocks, However, this method is difficult to avoid rockburst or reduce the intensity of rockburst; 2) TBM construction is used to reduce disturbance to surrounding rock, and this method is also difficult to avoid rockburst or reduce the intensity of rockburst; 3) Pre-splitting blasting is adopted, Reduce the integrity of the surrounding rock and the tendency of rockburst, but the blasting safety is low, and the operation process is complicated; 4) The surrounding rock is softened by water injection or hydraulic fracturing, which reduces the integrity of the surrounding rock and the tendency of rockburst, but the construction process is complicated, A water source is needed and the fracturing effect is difficult to guarantee; 5) Drill stress release holes in the surrounding rock to reduce the integrity of the surrounding rock and the tendency of rockburst. A certain degree of energy release can have a certain effect, but the effect is not obvious; 6) Adopt Combined support with spray-bolt mesh, this method can control the surrounding rock rockburst to a certain extent, but the cost is high, the construction process is complicated, and if the energy of the surrounding rock is not released to a certain extent, it is difficult to control strong rockburst; Bingji's anti-knock buffer support technology, which is costly and still under development

Images