The feasibility to simulate the initial earth stress of the large underground structure by using the algorithm of dynamic relaxation and system damping in LS-DYNA is investigated.
主要研究使用LS-DYNA的动力松弛算法和系统阻尼算法相结合来求解大型地下结构初始地应力状态的可行性。
The paper discussed the basic structure and functions of monitoring system of plank pressure based on embedded system underground, and introduced the key techniques to realize this system.
讨论了基于嵌入式系统的井下顶板压力监测系统的基本结构和所实现的功能，详细介绍了实现该系统的关键技术。
This article introduced the basic structure, principle, major technical parameters and the field test situation of the television detecting system of inner damages of underground pipeline.
介绍了地下管线内损伤电视检测系统的基本结构、工作原理、主要技术参数及其现场试验情况。
The paper briefly introduces the structure and design of the commonly steering system for underground loader at abroad.
简略介绍了国内外地下装载机常用的转向系统的结构与设计。
The disign of the database and the overall structure of underground lines and their program management system are briefly introduced.
说明了兰州市地下管线规划管理信息系统的总体结构；
Gongxu model works as a frame in the construction system of the underground structure group, and then the Gongxu model nodes in this frame are refined to Huodong model.
地下厂房洞室群施工系统以工序模型作为框架，将框架中的模拟工序节点细化为活动模型。
In underground water conveyance system for Three Gorges Projects permanent lock, the inclined shafts are large in number, short in length, complex in structure, changeable in height and so on.
针对三峡工程永久船闸地下输水系统斜井具有数量多、长度短、体型复杂、边墙高度逐渐变化等特点。
This paper introduces the structure of a counter-balanced underground parking system, which features reasonable design, economic and practical.
本文介绍了一种采用配重平衡式的地下停车设备，其设计合理，经济实用。
In this paper, the structure of mine underground integrated communication system on the leaky cable technology are introduced.
笔者就如何架构基于漏泄通讯技术的矿山井下综合通讯网络进行了探讨。
Firstly, this paper introduces the structure and working theory of the underground personnel positioning system, followed by the main technology used in the system in China.
本文首先介绍了煤矿井下人员定位系统的组成和工作原理，并给出了国内现有煤矿井下人员定位系统采用的主流技术。
The traffic transportation system of underground structure group is a kind of typical discrete event dynamic system, which is difficult to describe with analytic mathematic models.
地下洞室群的交通运输系统是一种典型的离散事件动态系统，难以用解析方法计算的数学模型来描述。
The underground pipe system had been completely designed through system structure, data collection, database design and system implementation link.
通过从系统结构、数据采集、数据库设计、系统实现等环节完整地对校园地下管网信息系统进行了设计。
In order to identify out the existence of the system and its structure, the geophysical electromagnetic technique is applied to detect and position the underground system.
为了查清该地下灌排系统的存在及其构造，采用地球物理电磁法进行了探测。
According to the system models talked above, the system simulation software for the construction of underground structure group is developed using the object-oriented technology.
针对上述系统模型，应用面向对象的开发方法编制了地下厂房洞室群施工系统仿真软件，适用于地下厂房洞室群施工仿真。
During concrete pouring for the tunnel of underground transmitting water system, the concrete structure was cracked by the difference in temperature inside and outside.
三峡工程永久船闸地下输水遂洞在洞室浇筑衬砌一段时期内，结构混凝土受到内外温差的影响，因不均匀收缩产生裂缝。
The structure of remote monitoring system in underground mining with limited area is studied. And the software system, the hardware system and the network system are studied and designed.
研究在受限空间环境下，地下采矿远程地压监控系统的结构组成，并且对软件系统、硬件系统、网络系统进行研究与设计。
The structure of remote monitoring system in underground mining with limited area is studied. And the software system, the hardware system and the network system are studied and designed.
研究在受限空间环境下，地下采矿远程地压监控系统的结构组成，并且对软件系统、硬件系统、网络系统进行研究与设计。
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