支护结构

The earth nail buttresses are the new soil-catching structure for rego lith digging and stability of slope. They have good feature of ductile failure.

土钉支护是一种用于土体开挖和边坡稳定的一种新型支挡结构，具有良好的延性破坏特征。

Properties for each type of support member are defined via the property keyword of the SEL command. Structural element logic in FLAC3D is described in Appendix H.

通过 SEL 命令的 property 关键字来定义每个支护成员的参数，结构单元逻辑在附录 H 中描述。

In the light of all kinds of structural faces and their assembles along tunnel, the place and growth depth of instable cuneiform body in tunnel wall rock could be predicted, then its volume and weight of instable cuneiform body are estimated based on the equator plane projecting method and the solid body ratio geometry method, which offers reliable geologic data for designing corresponding supporting measure.

摘要利用赤平投影法和实体比例几何法分析隧洞围岩稳定性，根据隧洞沿线所遇结构面相互组合形式，预测隧洞围岩不稳定楔形体的位置及其发育深度，从而估算不稳定楔形岩块的体积和重量，为设计相应的支护措施提供可靠的地质依据。

So,it can use stereographic projection of vector for further theory analysis,such as judging movable block in dam foundation and side slope after determining structure plane which has influence in the stability of project,that can guide the analysis and study of the stability of .

为确定对工程稳定性有影响的结构面后，可应用全空间赤平投影作进一步的理论分析，判断出坝基和边坡中的可动块体，以指导岩体稳定性的分析研究和支护设计工作。

The particular system of timbering depends on the rock formations through which the tunnels pass.

采用何种支护方法取决于井巷穿过的岩层结构。

In this paper,the optimitun process of design and construction of a super-shallow overburden multi- arch underpass is introduced.

介绍了一座超浅埋双联拱过街地道的设计和施工方案优化过程；针对该地道的使用要求、地质条件及地表环境要求，分析了原设计在结构形式、支护措施及施工方法等方面存在的缺陷；并提出了相应的改进措施。

This paper , pertaining to a certain project situated in karstic region where geologic formation is highly developed with features of calciferous cave faults abundant, in corporation with on site measurement and anti-analysis results, sets up a geo-mechanics model for various rock formations, and by way of 3D non-linear large deformation values modelling computation, numeric simulated study was taken for different shotcreted anchoring supports upon which one has studied surrounding rock control technique under unfavourable geologic conditions.

提要：本文针对某工程处于岩溶地区，地质构造发育，溶洞断层较多的地质特点，结合现场量测和反分析结果，建立不同岩体结构的地质力学模型，通过三维非线性大变形数值模拟计算，对不同的锚喷支护过程进行了数值模拟研究，在此基础上，研究了不良地质条件下的围岩控制技术。

Based on the knowledge and results gained from detail researches, select some a roadway as trial area to study further and validate the structural rheology and to search the sound countermeasure. The trial roadway, 50 m long, is portended that very large deformation and serious damage will happen, so its stability is very poor and its support very difficult.

基于围岩结构性流变的认识，在金川二矿区1198分段，选择了变形破坏严重、支护难度较大的巷道作为试验巷道(50m)，以进一步研究高应力区结构流变围岩及其工程对策。

Studied about the influnce of coal-bearing series formed change on the rock mass structure failue and strata behavios.

研究了煤系后生变形对岩体结构的破坏和对采面矿压显现的影响，并指出加强地质研究对矿井设计和支护的重要指导意义。

A self-fastening sealed drill sleeve and drill rod driven by the push force of drilling machine of archor rod features that its drill rod is composed of drill rod body, handle and sealing ring, and its drill sleeve of ZJI-model rubber spring type or ZJII-model spiral spring type consists of fastening sleeve, water nozzle, telescopic sleeve and spring.

本发明涉及一种锚杆钻机给进推力自紧密封钎套和钎杆，属于锚杆支护机械领域一种锚杆钻机在实施湿式钻孔作业中使用的钎套和钎杆。其特点是由钎套和钎杆两组部件组成，钎杆部件由钎杆体、钎柄和密封圈构成；钎套部件有两种结构：ZJI型橡胶弹簧式和ZJII型螺旋弹簧式，其部件由卡套、水嘴、伸缩套、弹簧组成。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。