Mining Engineering

围岩-尾砂胶结充填体

Surrounding Rock-Tailings Cemented Backfill

A composite material system consisting of surrounding rock and tailings bound by cement, used to fill mined-out zones to support the surrounding rock and manage waste. / 一种由围岩和尾砂通过水泥胶结形成的复合充填体材料，用于充填采空区以支撑围岩和处理废料。

Knowledge type: 实际应用
First proposed or discovered
Proposer: Turkey Farm member
Creator: 农场主
Last updated: 2026-11-10 18:07:03

Sub-knowledge points

Uniaxial compressive strength and elastic modulus decrease as inner diameter increasesFailure process dominated by weakly cemented tailings backfillLoad-transfer path shifts from surrounding rock to interface-backfillMicrocracks expand and coalesce to form macroscopic cracksFailure characterized by tensile-shear mixed mode with tensile failure dominantSpalling mode transitions from granular to blocky

Higher-order knowledge points

Energy evolution law of Surrounding Rock-Tailings Cemented BackfillFracture mechanism of Surrounding Rock-Tailings Cemented BackfillMicroscopic pore structure characterization using nuclear magnetic resonance

Main parameters and performance indicators

inner diameter: 15, 20, 25, 30, and 35 mminner radius (r): 25 mmarea fraction: 25%porosity: decreases with inner diameter increaseb-value: decreases during failurek_e (U_e / U): energy evolution coefficientk_d (U_d / U): dissipated energy coefficient

Open problems

No unresolved problem recorded yet

Related literature

ranked by community stars

Study of the Fracture Evolution Mechanism of Surrounding Rock-Tailings Cemented Backfill Composite Specimens Based on Acoustic Emission and Digital Image TechnologyOpen source

围岩-尾砂胶结充填体

Sub-knowledge points

Higher-order knowledge points

Main parameters and performance indicators

Open problems

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