鉱山の穴の領域における過重岩と毛穴の発展の特徴の崩壊パターンに関する研究
Zhenglong Li1, Ping Liu2, Han Sen1
1School of Mining, Guizhou University, Guiyang, 550025, Guizhou, China.
Scientific reports
|August 30, 2025
まとめ
この研究は,石炭鉱業が,上層層を崩壊させ,毛穴を作り,ストレスフィールドに影響を及ぼすことを明らかにしています. 発見は,放棄された鉱山地帯の 安全で知的な管理を支持します.
科学分野:
- 地理工学
- 鉱山工学
- ロック・メカニクス
背景:
- 炭鉱は地表のストレスを大きく変化させ 岩石の崩壊と毛穴形成につながります
- これらの変化は鉱山水障害,ガス噴出,地表構造の損傷のリスクを高めます.
- 放棄された鉱山のスペースを利用することで 革新的な管理ソリューションが提供されます
研究 の 目的:
- 廃棄された鉱山の層の崩壊パターンと 毛穴の形成を調査する
- 鉱業中のストレスと移動のフィールドの進化を分析する.
- 放棄された鉱山の賢明な管理のための理論的支援を提供すること.
主な方法:
- 理論分析,UDEC数値シミュレーション,フィールドモニタリングを組み合わせた.
- 作業面の前進をシミュレートする2D数値モデルを確立しました.
- Oリング理論とMATLABモデリングを適用し,孔の分布を分析した.
主要な成果:
- オーバーロードは"垂直の3ゾーン"構造 (崩壊,破裂,屈折沈下) を形成します.
- 移動における"ダイナミック・アーチ効果"と進化する"W"形の張力分布が観察された.
- 崩壊ゾーンの多孔性は"高縁,低中心"分布 (0.4から0.2) を示しています.
結論:
- この研究は,ストレス拡散と岩質の自立の結合メカニズムを明らかにする.
- 崩壊した岩質の多孔性のダイナミックな進化モデルを開発した.
- 発見は,グルーティングや 放棄された鉱山の管理などの 工学的な実践を支持しています.
さらに関連する動画
10:36Stress Distribution During Cold Compression of Rocks and Mineral Aggregates Using Synchrotron-based X-Ray Diffraction
Published on: May 20, 2018
9.8K
12:18Pore-scale Imaging and Characterization of Hydrocarbon Reservoir Rock Wettability at Subsurface Conditions Using X-ray Microtomography
Published on: October 21, 2018
14.2K
関連する概念動画
Porosity and Absorption of Aggregate
395
Aggregates contain pores of varying sizes; while some are completely enclosed within the particles, others open onto the surface, allowing water to penetrate. The porosity of aggregates is a major factor contributing to the overall porosity of concrete, given that aggregates constitute about three-quarters of concrete's volume.
When all pores in an aggregate are filled with water, the aggregate is considered saturated and surface-dry. If left in dry air, water will evaporate until the...
When all pores in an aggregate are filled with water, the aggregate is considered saturated and surface-dry. If left in dry air, water will evaporate until the...
395
Quarrying of Stone
195
Quarrying is the process of extracting stone from a quarry, where specialized techniques are employed to remove large blocks of stone safely and efficiently. This process can involve controlled explosions or more precision-oriented methods such as cutting and drilling.
One common method involves using a diamond belt saw to cut large blocks from the quarry face. These blocks can be about 50 feet long and 12 feet high. After the initial vertical cut, drilling is performed at the base of the...
One common method involves using a diamond belt saw to cut large blocks from the quarry face. These blocks can be about 50 feet long and 12 feet high. After the initial vertical cut, drilling is performed at the base of the...
195
Microcracking in Concrete
205
Microcracking in concrete refers to the tiny cracks that can form within the material even before any external load is applied. These microcracks typically occur at the interface between the coarse aggregate and the hydrated cement paste, often as a result of differential volume changes prompted by variations in stress-strain behavior, as well as thermal and moisture movement. Initially, these microcracks remain stable and do not grow substantially until the concrete is stressed to about 30...
205
Behavior of Concrete Under Compressive Load
268
Concrete exhibits specific behaviors under different compressive loads. Understanding this is crucial for understanding its structural integrity. When concrete undergoes uniaxial compression, it tends to develop cracks that run parallel to the direction of the force. These parallel cracks stem from localized tensile stresses that occur perpendicular to the compression direction. Additionally, angled cracks may appear due to the formation of shear planes.
As the concrete specimen fractures under...
As the concrete specimen fractures under...
268
Design Example: Maintaining Level of an Embankment
122
Constructing a roadway embankment over uneven terrain requires precise leveling to ensure stability and proper drainage. Surveyors use a leveling instrument and staff to calculate ground elevations and determine the required fill material at each point along the embankment alignment.The process begins by positioning a leveling instrument near a benchmark with a known elevation. A backsight reading establishes the instrument height, which serves as a reference for subsequent measurements. A...
122
Unsoundness of Aggregate due to Volume Change
174
Unsoundness in aggregates due to volume changes is primarily caused by the physical alterations aggregates undergo, such as freezing and thawing, thermal changes, and wetting and drying. Unsound aggregates, when subjected to these changes, result in volume change upon disintegration. This, in turn, contributes to the deterioration of concrete, including scaling, pop-outs, and cracking. Particular types of aggregates, such as porous flints, cherts, and those containing clay minerals, are...
174
