Research on Support Technology in Deep Roadway of Huafeng Mine

Kong, Jie; Chen, Peng; Chen, Jun; Liu, Qing Shu; Ma, Zhen

doi:10.4028/www.scientific.net/amr.753-755.831

Cited by 3 publications

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Yan et al [12] proposed to use truss control system. Wang et al [13] proposed the joint control technology of zoning.He et al [14] proposed the use of prestressed synergistic support technology.Yuan et al [15] proposed to adopt a comprehensive control technology with long anchors, rigid long rebar bolts, anchor nets, W steel belts, and shotcrete as the main body, and can be connected to long anchors to strengthen the roof plate. Yu et al [16] proposed that on the basis of drilling and depressurizing the surrounding rock of the roadway, the surrounding rock was supported in zoning.…”

Section: Introductionmentioning

confidence: 99%

The high strength cable truss system control of the surrounding coal roadway excavated in regions left intensively mining-induced stresses

Tai

et al. 2023

Preprint

View full text Add to dashboard Cite

The layout of coal roadways in the high stress concentration area is a typical coal roadway difficult to control problem, solving this problem is crucial to ensuring safe production in coal mines. This paper takes a typical roadway of Zhongxing Coal Industry in Fenxi, Shanxi Province as an example to monitor the on-site mine pressure of the deformation and failure characteristics of the surrounding rock during the excavation of the roadway. At the same time, a top-gang high-strength double-anchor cable truss support system with high preload is proposed, and its control mechanism and structural characteristics are analyzed in detail. Flac3D numerical simulation was used to analyze the stress distribution characteristics of roadway in the strong mining stress concentration zone, the new support scheme of 1409 airway with the top gang high-strength double anchor cable truss system as the core was finally determined,and industrial tests are carried out on site. The test results show that the roof-to-floor convergence and rib-to-rib convergence are not higher than 79mm and 191mm, respectively, and the surrounding rock control effect of the roadway is remarkable, and the surrounding rock deformation of the 1409 airway is effectively controlled. The support control technology system can provide certain reference value for roadways with similar production geological conditions.

show abstract

Section: Introductionmentioning

confidence: 99%

The high strength cable truss system control of the surrounding coal roadway excavated in regions left intensively mining-induced stresses

Tai

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Yang et al [2] analyzed the stress characteristics and crack evolution process of the roadway under different supporting forms for the soft-rock roadway and thus proposed the "bolt-mesh-spraying concrete + shell" combined support scheme, which effectively controlled the large deformation of the roadway. And, many scholars [3][4][5][6] proposed various combined support methods for complex geological conditions. Wang et al [7] and Bai and Hou [8] believe that stress is an important factor in roadway deformation, and the former thinks that the causes of roadway safety are excessive pressure and stress concentration of the surrounding rock.…”

Section: Introductionmentioning

confidence: 99%

Study on Safety Control of Large‐Section Roadway with High Stress and Broken Surrounding Rock

Peng

Zhu

Wang

et al. 2021

Advances in Civil Engineering

View full text Add to dashboard Cite

In order to solve the problem of difficult support of the roadway with high stress and large-section broken surrounding rock, this paper takes the subinclined shaft in Gaokeng mine of Jiangxi Province as the engineering background, analyzes the deformation mechanism and support mode of the roadway under the influence of mining through field investigation and mechanical derivation, and concludes that the stress concentration point of the roadway is in the middle point of roof and floor and the middle point of left and right sides. Through the modeling analysis of FLAC3D numerical software and the comparison of various support schemes, it is concluded that, after the combined support method of “anchor, net, and spray + grouting + full-section anchor cable + floor anchor cable“ is adopted, the convergence of roof and floor is reduced by 508 mm, and the convergence of two sides is reduced by 663 mm. And, it is applied in engineering practice. The results show that the combined support scheme can effectively control the stability of the surrounding rock.

show abstract

Analysis of Stress and Deformation on Surrounding Rock Mass of a Trapezoidal Roadway in a Large Inclination Coal Seam and Novel High Yielding Prop Support: A Case Study

Yang

Liu

et al. 2023

Mathematics

View full text Add to dashboard Cite

Trapezoidal roadways in large inclination coal seams show asymmetrical tectonic characteristics, while there is still a lack of theoretical results on stress, deformation, and efficient and effective supporting methods on high walls. In this paper, based on the geological characteristics of a large, inclined coal seam roadway, a mechanical model for stress–deformation analysis of trapezoidal section roadway was established. Complex analysis and a comfort map were employed to investigate the stress and deformation distribution on the roadway surface, and a novel yielding prop with high load capacity and constant working resistance was employed to support a high wall side based on analytical results. The results are as follows: (1) The deformation of the high wall is larger than that of the low wall, and the deformation of the roof is larger than that of the floor. The overall deformation of the surrounding rock shows that the rib closure is larger than the roof-to-floor closure. (2) The stress of the surrounding rock shows that both horizontal and vertical stresses are highest in the upper corner, indicating that the broken zone is most likely to occur at this location. (3) A new support employed with a high-yielding prop and a high-strength cable in a large, inclined angle roadway is proposed. On-site experiments were conducted in a large 5-1081 roadway of a coal mine in Shanxi, China. Under the influence of mining disturbance, the deformations at the top corner decreased by 40% compared with before. The test results show that the new support scheme can effectively control the development of roadway deformation and damage during the mining process. The new support also shows friendly environmental support and fast installation.

show abstract

Research on Support Technology in Deep Roadway of Huafeng Mine

Cited by 3 publications

References 1 publication

The high strength cable truss system control of the surrounding coal roadway excavated in regions left intensively mining-induced stresses

The high strength cable truss system control of the surrounding coal roadway excavated in regions left intensively mining-induced stresses

Study on Safety Control of Large‐Section Roadway with High Stress and Broken Surrounding Rock

Analysis of Stress and Deformation on Surrounding Rock Mass of a Trapezoidal Roadway in a Large Inclination Coal Seam and Novel High Yielding Prop Support: A Case Study

Contact Info

Product

Resources

About