Vertical shaft excavation method adapting to geology and vertical shaft heading machine supporting system thereof

Abstract

The invention discloses a vertical shaft excavation method adapting to geology and a vertical shaft heading machine supporting system thereof. Primary excavation is carried out, and shotcreting and anchoring are carried out in a primary excavation area to form primary supporting; excavation is continued, when the first preset depth is reached, a soil pressure measuring device measures the soil layer pressure parameter of the first preset supporting area, shotcreting and anchoring are carried out in the first preset supporting area to form first continuous supporting with the primary supporting; and the pressure parameter of a second preset supporting area is measured, shotcreting and anchoring are carried out in the second preset supporting area to form second continuous supporting with the first continuous supporting, and so on, until the excavation supporting is completed. The soil layer pressure of the vertical shaft in the excavation process is measured in real time through the soil layer pressure measurer, and the side wall of the vertical shaft is supported after corresponding anchor rod supporting parameters are obtained, so that the problems that the corresponding anchor rod supporting parameters can be obtained only after geological survey is carried out before the deep vertical shaft is excavated in the prior art, the manpower and material resources are consumed in the whole exploration process, and the exploration is inaccurate are solved.

Description

technical field [0001] The invention relates to the technical field of shaft construction, in particular to a shaft excavation method adapted to geological conditions and a shaft boring machine support system thereof. Background technique [0002] Shaft is the main channel for underground mineral mining, ventilation of long tunnels and other underground engineering. It has an irreplaceable position in underground engineering. Shaft construction equipment and technical level are the key factors for the rapid development of shaft construction industry. One of the difficulties in shaft excavation engineering is the optimal design of shaft support structures. At present, the optimization design of deep foundation pit support structures in my country still adopts semi-empirical and semi-theoretical methods, and the technical norms and guidance are not yet perfect. With the development of technology. The development of shaft boring machines gradually transitions to the deep, and h...

AI Technical Summary

Problems solved by technology

The "three-high" problem has brought great challenges to the support of deep shafts. In view of the special construction environment, semi-empirical and semi-theoretical methods can no longer solve the support problems of deep shafts. Insufficient, resulting in waste of support materials, increasing support costs, or insufficient support strength, leading to well wall damage

[0003] At present, there are some inventions and papers on the shaft support system, but they are mainly shallow shafts. In China, there are many researches on the support schemes of shallow shafts (0-50 meters), while deep shafts (>50 meters) are The domestic short board has never been studied, so how to improve the economy and safety of shaft support is a technical problem that needs to be solved in this field. In addition, according to different soil pressures and geological conditions, the required support parameters also vary. Therefore, how to realize formation detection and support parameter adaptation during excavation in different formations is the main problem to be solved

[0004] For example, a deep underground tunnel ventilation shaft support structure whose publication number is CN112796763A, this structure can quickly seal the surrounding rock and inject grout on the complex surrounding rock section, prevent the surrounding rock from collapsing and deforming, and has high safety and timeliness and economical, but the support structure is complex and the application range is narrow, so it cannot be widely used in various deep geological conditions; the publication number is CN110206547A, a method suitable for shaft excavation and support in deep formations and high-stress areas. Methods The advanced detection of the ground conditions under the working face of the shaft solves the problems in the process of shaft excavation and support in the high-stress area of ​​the deep stratum of the shaft. It is not easy to achieve advanced drilling during the excavation process of the roadheader. Geophysical methods to test changes in natural or artificial physical fields are time-consuming and do not meet the original intention of advanced detection.

[0005] In order to solve the above problems, the present invention provides a method for excavating shafts adapted to geology and its support system for shaft boring machines to solve the problem of high cost of excavation and support for shafts

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