Dynamic Load Characteristics and the Pressure Reduction Caused by the Cutting Seam on the Roadside Roof of a Large Mining Height Longwall Face in a Shallow Coal Seam

Yang, Jun; Liu, Binhui; Gao, Yubing; Wang, Yajun; Cheng, Yu; Hou, Shilin

doi:10.1007/s10706-019-00811-6

Cited by 6 publications

(2 citation statements)

References 8 publications

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“…The BCTE has significant advantages over ordinary blasting, which has promoted its widespread use in coal mines. in particular, the application of BCTE to roadways along gobs is denoted as the third mining technology revolution in China [27][28][29][30].our group has coordinated with more than 100 mines to apply the BCTE process to coal mine production. The statistics from some mines using this technology are shown in figure 3.…”

Section: The Application Of Bctementioning

confidence: 99%

Archives of Mining Sciences

Yang,

Liu,

Bian

et al. 2021

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ApplicAtion cumulAtive tensile explosions for roof cutting in chinese underground coAl minesCumulative blasts are an important controlled blasting method used to control the propagation of cracks in the predetermined direction. however, traditional cumulative blasts are associated with long processing times and poor blasting effects. A simple blasting technology called bilateral cumulative tensile explosion (BCTE) is proposed in this paper. There are two application types where BCTE is used. The first application is used to control the stability of high-stress roadways in both Wangzhuang mine 6208 tailgate and hongqinghe mine 3-1103 tailgate. The second application is used to replace the backfill body in gob--side entry retaining (gER) in Chengjiao mine 21404 panel, Jinfeng mine 011810 panel and Zhongxing mine 1200 panel. The first application type reveals that BCTE can significantly reduce the deformation of the surrounding rock and reduce the associated maintenance cost of the roadways. Whereas the second application type, the roadway deformations are smaller, the process is simpler, and the production costs are lower, which further promotes gER and is of significance towards conserving resources.

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Section: The Application Of Bctementioning

confidence: 99%

Archives of Mining Sciences

Yang,

Liu,

Bian

et al. 2021

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“…He et al [6] studied the influence of key parameters (height and angle of kerf ) of roof cutting on the effect of retaining roadway, the filling characteristics of gob. Yang et al [7] studied the effects of different cutting positions on the periodic weighting. Little research has been carried out to study the deformation and failure of the surrounding rock of the gob-side entry retention by roof cutting.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analyses on Deformation and Failure Characteristics of Surrounding Rock of Gob‐Side Entry Retention by Roof Cutting

Liu

Yang

et al. 2021

Advances in Civil Engineering

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Universal distinct element code (UDEC) is a simulation software based on the discrete element method, widely used in geotechnical mining. However, in the UDEC, when simulating large-scale excavation, the subsidence of the fractured zone is almost equal to the mining height, which makes the deformation value calculated in the study of gob-side entry retention too large. To solve this problem, in this paper, the double-yield constitutive model is applied to the whole caving zone to analyze the deformation and failure characteristics of surrounding rock along gob-side entry retaining by roof cutting. The results of the simulation are in good agreement with the result of drilling peeking (drilling observation by borehole televiewer) and field condition (observation and measurement in the field). Finally, by using this numerical method, the effects of roadway width, temporary support, and coal side support on the failure of the roof and the arc coal side are studied.

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Roof Condition Characteristics Affecting the Stability of Coal Pillars and Retained Roadway

Dao

2023

Environmental Science and Engineering

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Dynamic Load Characteristics and the Pressure Reduction Caused by the Cutting Seam on the Roadside Roof of a Large Mining Height Longwall Face in a Shallow Coal Seam

Cited by 6 publications

References 8 publications

Archives of Mining Sciences

Archives of Mining Sciences

Numerical Analyses on Deformation and Failure Characteristics of Surrounding Rock of Gob‐Side Entry Retention by Roof Cutting

Roof Condition Characteristics Affecting the Stability of Coal Pillars and Retained Roadway

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