新城金矿地应力场测量及其分布规律研究

新城金矿地应力场测量采用应力解除法和实现完全温度补偿的空心包体应变测量技术。为了提高测量结果的可靠性和精度，在现场测量和结果计算、分析过程中，采用了完全温度补偿技术，自动应变测量和记录系统，用双迭代程序求测点岩石弹性模量、泊松比和测点ｋ系数、地应力值等一系列新理论、新技术．现场实测获得矿区４个水平、 １７个测点的三维应力状态，并根据实测结果对矿区地应力场的分布规律进行了详细分析，建立了矿区地应力场分布模型。

同忻井田地应力测量与回采巷道稳定性研究

为保证同忻煤矿安全、高效开采,采用应力解除法对大同矿区同忻井田3-5#煤层的地应力场进行了测量,结合理论分析、数值模拟与现场监测,分析了在该类型应力场中不同巷道布置方向与巷道围岩稳定性之间的关系。测得同忻井田最大主应力为20.42 MPa,方位角为245.18°,确定了同忻井田地应力场属于σHv型。理论计算和数值模拟的结果表明,有利于回采巷道稳定性的布置方向为与最大水平主应力方向成30°,并采用巷道顶板离层监测仪对其进行了验证。

空心包体技术在艾维尔沟煤矿地应力测定中的应用

应用空心包体式三轴应变计,采用钻孔应力解除法系统地对艾维尔沟煤矿现有主采煤层进行地应力现场实测。通过对实测数据的系统分析,得到地应力测量应变-解除距离曲线以及矿区范围内地应力场的分布规律。测量结果表明艾维尔沟煤矿水平构造应力十分明显。

Field measurement of wind-induced stress on glass facade of a coastal high-rise building

The glass facade of high-rise building in coastal areas is vulnerable under typhoon.The research works in the literature on facade's wind-resistance performance,however,have some limitations to apply to this issue.During typhoon landing,the whole facade will vibrate and deform due to the change of atmosphere,temperature and impacted torrential rain,to result in a quite different strain or stress distribution in the glass facade from those in model test and wind tunnel test.In this paper,the field measurement on glass facade of a coastal high-rise building in Xiamen was performed,the wind pressure on the glass facade was measured and a large number of windinduced stress data were obtained during typhoon landing.The relationship between wind pressure and stress or strain of the glass panel was analyzed and the situation of stress distribution was summarized.