变滑面顺层滑坡相似模拟试验装置研制与应用

为了揭示地下采矿诱发顺层岩质斜坡的变形失稳机制,自主研制变滑面顺层滑坡相似模拟试验装置,该试验装置用可变滑面间接模拟地下开采对斜坡的影响,可节省配制和装填基岩、矿层等滑动面以下岩层的相似材料用量,缩短模型堆建时间,减少工作量,能模拟不同滑动面形态、变形速度、挠曲程度、抗剪强度等条件下顺层斜坡的变形失稳。利用该试验装置,研究重复逆坡开采影响下顺层岩质斜坡的变形破裂响应特征,试验结果与现场实际斜坡的变形破坏滑坡过程相符,表明试验装置具有较好的可靠性。

On the development of a similar simulation testing device for the variable plane bedding landslide and its application

In order to disclose the deformation and instability mechanism of the bedding rock slope that is induced by the underground mining,the present paper is inclined to develop a noval similar simulation test device independently through its own research. The proposed similar simulation test device is supposed to be able to simulate the effect of the underground mining on the slope form and construction by means of a great variety of sliding surface movement,including a great deal of benefits the research workers wish to find in the mining engineering projects. For instance, first of all,the success of the research can help to save great amount of similar material that can be used for preparing and loading of large amounts of bedrock,ore and other strata under the sliding surface. And,then,it can also shorten the model stacking time and reduce the research workload. And,what is the most important,the successful application of the aforementioned device can help to simulate and depict the deformation and instability regulations of the bedding slopes under the different situations, including the different sliding surface shapes,the deformation velocity,the flexural strength and shear strength of the deformation. Thus,what has been said above has motivated us to fulfil the simulated studies by means of the said testing and examination devices so as to work out the deformation and fracture response characteristics of the bedding rock slope under the impact of the repeated anti-slope mining activities. And,indeed,all the testing and investigation results prove consistent with the actual deformation process of the slopes in the fields,which demonstrate that the proposed testing device tends to be working with great reliability. The successful development of this similar simulation test device laid a solid foundation for the study of the underground mining under the slope,which has a great impact on the development of the mining methods in mining engineering. Besides,the development of the given test device can provide a new method for the study of the mechanism of deformation in the slope under the influence of the underground mining,which helps to provide a new prospect for the research workers to analyze the stability of the slope,and promote further studies in the mining subsidence, landslide mechanism,as well as the other similar issues.