屋顶迁移的进化法和监管技术在门侧入口保持保持
Li-Xin Zhang1, Li Yi2, Li Gang1
1School of Energy and Mining Engineering, Liaoning Technical University, Fuxin, 123032, Liaoning, China.
Scientific reports
|March 6, 2024
概括
在煤矿中,侧入口保留经历了屋顶迁移. 灵活的成型混凝土墙壁和屋顶切割有效控制屋顶沉积,减少断裂区域,改善道路稳定性.
科学领域:
- 采矿工程 采矿工程 采矿工程
- 地质技术工程 地质技术工程
- 岩石机械学 岩石机械学
背景情况:
- 在高效的煤矿开采中,侧入口保持至关重要.
- 了解屋顶迁移对于道路稳定性至关重要.
- 宁田煤矿的综合采矿面提供了一个工程背景.
研究的目的:
- 为了研究屋顶迁移的进化规律,在部侧入口保持.
- 分析应力分布及其对屋顶沉降的影响.
- 评估柔性造混凝土墙壁和屋顶切割在控制屋顶运动中的有效性.
主要方法:
- 数字模拟分析屋顶层的演变和应力分布.
- 分析不同位置的屋顶沉降模式,与工作面相比.
- 现场监测采矿压力和分析屋顶断裂断裂在屋顶切割之前和之后.
主要成果:
- 应力度发生在柔性板混凝土墙壁内,导致最高屋顶沉积35.35毫米.
- 一个"弧形"的减压区影响了屋顶的沉降,导致它向道路侧面增加.
- 屋顶切割可以减少沉降,最大位移变化差异为0.011%,沉降差异为4.98毫米.
- 在未切割的屋顶部分的断裂面积明显大于在屋顶切割的部分.
结论:
- 灵活的成型混凝土墙壁和屋顶切割是有效的支持技术,用于控制顶侧入口的屋顶沉降.
- 数字模拟和现场监测证实,在实施这些支持方法后,屋顶位移和断裂面积减少了.
- 这项研究提供了宝贵的洞察力,用于挖矿过程中道路的地力学行为,并为支持系统的设计提供了信息.
更多相关视频
08:04Application of Impermeable Barriers Combined with Candidate Factor Soaked Beads to Study Inductive Signals in the Chick
Published on: November 17, 2016
9.4K
08:19Quantitative Comparison of cis-Regulatory Element CRE Activities in Transgenic Drosophila melanogaster
Published on: December 19, 2011
11.8K
相关概念视频
Cavity Drainage and Flashings in Masonry walls
81
Typically, a cavity wall consists of two wythes separated by a gap of at least 2 inches, which may contain insulation while still maintaining a minimum clear space of 1 inch to facilitate adequate drainage. Advanced methods like the insertion of a continuous drainage mat can further reduce this space while ensuring effective moisture expulsion.
Weep holes, strategically placed at the base of the cavity, are critical for draining accumulated water. These openings are created by leaving head...
Weep holes, strategically placed at the base of the cavity, are critical for draining accumulated water. These openings are created by leaving head...
81
Design Example: Maintaining Level of an Embankment
63
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...
63
Design Example: Forces in Sluice Gate
597
In hydraulic engineering, sluice gates are essential for managing water flow through channels, reservoirs, and irrigation systems. Sluice gates, acting as vertical barriers, regulate water by adjusting the gate's opening height, which changes the velocity and pressure of water flowing beneath the gate. Understanding the forces involved is crucial to designing sluice gates that can withstand dynamic pressure differences, especially when the gate is closed or partially open.
Key variables in...
Key variables in...
597
Migration
7.9K
Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
7.9K
Expansion and Contraction in Masonry Walls
954
Masonry walls are subject to slight expansion and contraction due to variations in temperature and moisture. Thermal movement in masonry is relatively straightforward to measure and plan for. On the other hand, moisture movement poses more of a challenge. New clay masonry units typically absorb water and expand over time under normal environmental conditions. Conversely, new concrete masonry units tend to shrink as they lose the excess moisture acquired during their production process.
To...
To...
954
Movement Joints in Buildings
117
Movement joints in buildings are essential design elements that accommodate inevitable motions caused by various factors such as temperature changes, moisture content variations, and structural deflections. These motions, if not considered in design and construction, can lead to unsightly or dangerous damage. Movement joints are incorporated in different forms to manage these stresses and allow materials to move without causing distress.
The simplest type of movement joints, working joints, are...
The simplest type of movement joints, working joints, are...
117
