Hands-on experience of safe and efficient ore mining in Siberia

Еременко, А. А.; Еременко, В. А.; Aleksandrov, A. N.; Koltyshev, V.N.

doi:10.1134/s106273911405007x

Cited by 5 publications

(4 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Физико-механические свойства околорудной зоны приняты по данным табл. 1 и учитывались интегрально: коэффициент Пуассона ν = 0,21; объемный вес пород γ = 0,028 МН/м 3 ; модуль упругости Е = 7,5×10 4 МПа; предел прочности на сжатие σ сж = 96 МПа; предел прочности на растяжение σ р = = 9,6 МПа; сцепление С = 27 МПа; угол внутреннего трения ϕ = 34°. Коэффициент крепости пород по Протодьяконову f = 5-12.…”

Section: ндс массива горных пород в окрестности выработанных простран...unclassified

“…Увеличение глубины разработки месторождений сопровождается естественным ростом исходного поля напряжений в недрах, появлением динамических явлений (горные удары, микроудары, толчки и др. ), а также обострением проблемы управления горным давлением [3,4]. В горных науках данная совокупность задач в общем виде сформулирована как геомеханическое обоснование технологических схем горных работ в сложных горно-геологических условиях.…”

Section: Introductionunclassified

See 1 more Smart Citation

Application of digital twins to predict rock-bump hazard of drift pillars

Moroz¹,

Sidorov²,

Sonnov³

2022

Mining Industry Journal

View full text Add to dashboard Cite

Drift pillars are used to protect haulage tunnels from the effects of formation pressure and ingress of the caved rock mass. At the same time, leaving pillars made up of fragile ores exposed to significant compressive stresses poses a risk of dynamic formation pressure. Due to the design features of the mining method and safety regulations, it is not possible to access the drift pillar from the rising side, which limits the ability to make a meaningful instrumental forecast of the rock-bump hazard. Therefore, it is advisable to use digital twins to predict the rock-bump hazard of the drift pillars. The article describes the experience gained by the VNIMI Institute in using the PRESS 3D URAL dedicated software (Polygore LLC, St. Petersburg) and the FIDESYS software package (Fidesys, Moscow) for a comprehensive assessment of the stress-and-strain state and rock-bump hazardous condition of the drift pillar. The first stage included numerical evaluation of the natural tectonic stress field using the PRESS 3D URAL software. At the second stage, an assessment of the man-made stress-and-strain state of the rock mass and the ore drift pillar was performed using the FIDESYS software package during underground mining with the heading-and-stall method. The final stage involved a prediction of the rock-bump hazard of the ore pillar using data on the ore strength properties.

show abstract

Section: ндс массива горных пород в окрестности выработанных простран...unclassified

Section: Introductionunclassified

Application of digital twins to predict rock-bump hazard of drift pillars

Moroz¹,

Sidorov²,

Sonnov³

2022

Mining Industry Journal

View full text Add to dashboard Cite

show abstract

“…In the technological process of a mining enterprise, development of mine workings is the most important link as the effective operation of the entire mining complex largely depends on its rate and quality [1,2]. In this connection, the adequacy of the design and operating parameters of the roadheaders' cutting tools to the operational mining and geological conditions is the main factor affecting the performance indicators of the process of underground mine working development [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Relationship between the Power of the Two-Bit Cutting Body Rotation Drive of the Roadheader and Hardness of Broken Rock

et al. 2018

View full text Add to dashboard Cite

Abstract. The motion patterns of the cutting body of a roadheader with two kinematically connected reversible radial bits equipped with a disk tool on trihedron prisms are presented. The regularity of the disks motion under the action of forces applied to them is considered with allowance for the moments of inertia. The scheme of forming the depth of intrusion by the biconical disc tool of radial bits into the face rock strata is substantiated. The calculated dependences of the total torques ΣМk on the cutting body of the roadheader are obtained from the angle  of the bits rotation, taking into account the contact strength Pk of the rock strata to be broken. The calculation is made of the power of the rotation drive of the two-bit cutting body with a disk tool on trihedral prisms in breaking the rock strata in the range of strength characteristics for the mines of Kuzbass.

show abstract

“…Meanwhile, excavation methods implemented in deep-buried tunnel excavation have considerable influence on the rockburst evolution process. Most deep-buried tunnels have been excavated by drill-and-blast (D&B) method resulting in large amounts of studies on the evolution mechanism and prevention of rockbursts associated with blasting excavation [38][39][40][41][42]. Nevertheless, TBM has always been the preferred method to construct the deep-buried tunnels owing to its incomparable advantages.…”

Section: Introductionmentioning

confidence: 99%

Microseismic Monitoring of Energy Changes in Deep Tunnels during the TBM Tunneling of the Jinping II Hydropower Station

Zhuang

Tang

et al. 2018

Advances in Civil Engineering

View full text Add to dashboard Cite

e TBM tunneling at the Jinping II hydropower station in Southwest China has received extensive concerns around the world because of its large engineering scale and the high rockburst risks faced in the tunnel advancement. e associated energy changes of rockbursts and control method for safe TBM tunneling are to be further investigated. A movable microseismic (MS) monitoring system was established to capture the MS events and rockbursts when the TBM excavated the headrace tunnel #1 at the Jinping II hydropower station. e spatial and temporal patterns of the energy changes in the tunnel rock masses were studied. Meanwhile, the evolution of a rockburst encountered in front of the TBM excavation face was revealed, and the performance of the top pilot tunnel method on the reduction of the rockburst risks in the headrace tunnel #1 was evaluated based on the energy changes of the surrounding rock masses. It can be concluded that energy accumulation and energy release firstly occurred in the surrounding rock masses at the southern end of the top pilot tunnel section of the headrace tunnel #1. en, energy transference of the rock masses took place from the southern end to northwest of the top pilot tunnel giving rise to the occurrence of a moderate rockburst about 30 m in front of the tunnel. However, no rockbursts appeared when the TBM excavated through the top pilot tunnel section of the headrace tunnel #1. erefore, the top pilot tunnel method really works in reducing the risks of rockbursts during the TBM tunneling in deep tunnels.

show abstract

Hands-on experience of safe and efficient ore mining in Siberia

Cited by 5 publications

References 2 publications

Application of digital twins to predict rock-bump hazard of drift pillars

Application of digital twins to predict rock-bump hazard of drift pillars

Relationship between the Power of the Two-Bit Cutting Body Rotation Drive of the Roadheader and Hardness of Broken Rock

Microseismic Monitoring of Energy Changes in Deep Tunnels during the TBM Tunneling of the Jinping II Hydropower Station

Contact Info

Product

Resources

About