The distribution characteristics of initial rock stress in the tectonic stress type mine is analyzed first in the paper,and numerical simulating analysis is used to make analysis of the top-collapsing and failure forms of roof rocks at the western part of Chengchao Iron Mine,which could be theoretical basis to forecast and control the underground roof accidents.
本文首先分析了构造应力型矿山的地应力分布特点,然后对程潮铁矿西区深部开采中,放顶及开采对顶板围岩破坏形式进行了数值模拟,为矿山地压监测和顶板稳定防护提供了理论依据。
Finite element method is used to make an analysis of the underground stress redistribution at the western part of Chengchao Iron Mine during top-collapsing process, and a theoretical basis has been provided to determine correct sequence of caving and forecast and control the underground stress.
采用有限单元法对程潮铁矿西区放顶过程中地压重新分布的规律进行分析,为矿山正确地确定回采顺序和对地压进行预测、管理提供了理论依据。
Discussion on support and design of the powered support for the top-coal caving of up-dip mining face;
放顶煤仰采工作面液压支架支护与设计探讨
A study on top-coal caving technology in thick seams with fully mechanized face;
厚煤层综采放顶煤工艺研究初探
The application of waterinjection soften process of π type steel caving coal;
π型钢放顶煤煤体的水软化工艺技术的应用
Computer simulation research on working results of fully mechanized caving coal face;
综采放顶煤工作面生产效果计算机模拟研究
Practice on the technology of large tilt angle compound mining caving coal;
大倾角综采放顶煤技术的开采实践
Analysis on technological transformation from flooring support to caving support;
铺网支架改放顶煤支架技术浅析
The case of accidents,the proposed blasting mining roof caving face the basic requirements for control and prevention of incidents of roof effective measures,must learn.
该文通过事故案例分析,提出了炮采放顶煤工作面顶板控制的基本要求和预防顶板事故发生的有效措施,有一定借鉴意义。
ZF—4600 light caving supporter was tested successfuly in thick seem descending slicing face,whick supplied a new choice for the mining in similar face.
在厚煤层下分层回采工作面 ,使用ZF— 4 6 0 0轻型放顶煤支架及其配套设备 ,井下现场试验成功 ,为同类型工作面的设备选型和采煤方法提供了新的选择。
Study the technique of caving hanging roof in the condition of hard roof of room-and-pillar mining.;
房柱式开采坚硬顶板条件下悬顶放顶技术研究
STUDY OF CONTROL CAVING METHODS AND REASONABLE HANGING ROOF LENGTH ON HARD ROOF
坚硬顶板控制放顶方式及合理悬顶长度的研究
These dishes stand on the top shelf.
这些碗盘是放顶架上的。
Study on Top Coal Caving of Horizontal Section Top Caving in Steep Seam;
急倾斜水平分段放顶煤顶煤放出规律研究
Top Coal Crushing Mechanism and Determination of Roof Caving Height in Roof Caving Workface
放顶煤工作面顶煤破碎机理及放煤高度的确定
The first caving roof sections in hard coal layers can effectively reduce the pressure during the course of caving and guarantee safe production and efficiency.
坚硬煤层顶板分段初次放顶,能够有效缓解放顶期间的顶板压力,保证安全生产,提高生产效率。
The Three-dimensional Visualization Simulation of Top-coal Movement Regulation on the Base of OpenGL;
基于OpenGL放顶煤顶煤运动规律的三维可视化仿真
Technology and Control of First Roof Caving at Fully Mechanized Coal Face with Hard and Massive Overlying Strata
厚层坚硬顶板综采工作面初次放顶技术管理
Practice on Mining Method Changing from Top Coal Caving Mining to Top Slice Mining
工作面由放顶煤开采改为顶分层开采的实践
Research on the Top Coal Caving and Drawing Characteristics of Caving Roof Coal Mining for Shallawly Buries and Hard-Thick Coal Seam;
浅埋藏坚硬特厚煤层放顶煤开采顶煤冒放性研究
Practice of "Two Wining and One Caving" Technique on Blasting and Top-coal Caving Working Face
“两采一放”工艺在炮采放顶煤工作面的实践
Study on Roof and Top-Coal Classification and Application in Fully Mechanized Top-Coal Caving Face;
综放面顶板（顶煤）分类及应用研究
These books go on the top shelf
这些书该放在书架顶层。
raise on or as if on a pinnacle.
提高或者放到顶点上。
The "Liberation" had just reached the top.
解放车正登上山顶。
Roof-coal Falling Characteristics Analysis in Fully-mechanized Caving
综放开采顶煤冒放性因素分析与评价
Study on Top-Coal Caving and Drawing Capability and Roof Control in Hard Coal and Hard Roof Short Sub-Level Caving Fully Mechanized Face
“两硬”短工作面综放开采顶煤冒放性及顶板控制技术研究
Pressure releasing and gas drainage with long bore hole in roof overburden of fully mechanized caving face
综放面顶板覆岩走向长钻孔卸压抽放瓦斯研究
