1) artifical caving and undercut
放顶拉底
2) top-collapsing
放顶
1.
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。
2.
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。
3) undercutting
['ʌndə'kʌtiŋ]
拉底
1.
Undercutting and ore drawing are the most important and effective means for ground pressure control.
地压控制是自然崩落法采矿活动过程中的一项重要内容 ,拉底与放矿工作是控制地压的最主要的手段 ,也是最有效手段。
4) Undercut
[英][,ʌndə'kʌt] [美][,ʌndɚ'kʌt]
拉底
1.
In mining method of block caving,undercut is the most feasible and active man-made factor used to control the caving process.
拉底是自然崩落法最灵活,最具有主动性的人为控制崩落的因素,它通过直接或间接地改善岩体的可崩性,达到诱导持续崩落和降低矿岩大块率的目的。
5) roof and floor
顶底板
1.
Water inflow forecast from roof and floor in the deep area of No.1 panel;
深部首采工作面顶底板涌水量预计
2.
Based on analysis of characteristics of the roof and floor of each minable seam,this paper demonstrated some common issues occurring in underground working activities,providing reliable data for helping shaft geologists with their engineering design and construction and then contributing to mining activities in a better way.
通过对童亭井田各可采煤层顶底板特性分析,对不同顶底板岩性及采掘中遇见的问题进行了说明,为矿井地质工作人员设计、施工提供了可靠的地质依据,以更好地为矿井生产服务。
3.
On the basis of digital acoustic logging and density logging data, the stability of theroof and floor of the main workable coal seams in Hanzhuang wellfield of Qinshui coalfield,Shanxi.
根据数字声波测井和密度测井资料，讨论了山西沁水煤田韩庄井田主要可采煤层顶底板的稳定性。
6) soft bottom and broken roof
软底碎顶
补充资料：幼发拉底河
| 幼发拉底河 Euphrates River 西亚最长河流。源于土耳其东部安纳托利亚高原的内托罗斯山脉。源头称卡拉苏河，西流至班克以北汇合木拉特河后，始称幼发拉底河。此后曲折南流，在比雷吉克以南入叙利亚境内，至梅斯克内附近转向东南流，沿途接纳拜利赫河、哈布尔河等支流后，入伊拉克境内，在希特附近流入平原，此后再无常流河支流。流至欣迪耶附近分为两支，东支称希拉河，西支称欣迪耶河。在两河分流处筑有欣迪耶大坝，控制两河水量，形成伊拉克重要灌溉农业区。两河在塞马沃附近汇合，继续东南流，于古尔奈附近与底格里斯河汇合，改称阿拉伯河，于法奥附近入波斯湾。从河源到塞马沃，河长2750千米，流域面积67.3平方千米。主要靠高山融雪和山区降雨补给，水量较为丰富，但因沿途蒸发、渗漏及大量灌溉，至中下游流量骤减。入平原后，河流沿岸形成伊拉克重要灌溉农业区。自希特以下可通汽船，航程近900千米。
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参考词条