Rock Collapse(岩崩)研究综述
Rock Collapse 岩崩 - Geotechnical hazards such as debris flows, rock falls in slopes, rock collapse, and rockburst in underground mining or caverns are tightly correlated to the mechanical behavior of natural rock mass stability. [1] It displays a number of remarkable geomorphic features, including: (1) two stepped planation surfaces cut-across folded gypsum developed during an initial phase of slow base level deepening punctuated by periods of stability; (2) unusual deeply entrenched gypsum canyons related to a subsequent phase of rapid fluvial incision and water table lowering; (3) a polygonal karst of superlative quality mainly developed in the upper surface; (4) relict valleys disrupted by sinkholes in the lower erosional surface; (5) a large number of bedrock collapse sinkholes mostly associated with the lower surface; and (6) numerous cover subsidence sinkholes developed in the valley floors. [2] The traditional prediction method of wellbore instability in fractured formation cannot effectively solve the problem of surrounding rock collapse in ultra-deep fractured reservoir. [3] However, few works have clearly addressed the role of water/ice in crack development from a fracture mechanics viewpoint to explain the seasonality of rock collapse. [4] Based on the theoretical equations’ calculation results, the monitoring of dynamic changes in cantilevered rocks’ stability and early warning of rock collapse can be accomplished using vibration sensors. [5] This study provides an important early warning indicator for rock collapse. [6] A detailed geometrical 3D reconstruction of human-made and natural tunnels coating materials, a geo-mechanical survey of the rock mass, a map of rock collapses and cinematic analysis of instability processes. [7] Exploiting the most advanced laser scanning survey technique, and some specific algorithms for point cloud analysis, several outputs have been generated, in particular a detailed geometrical 3D reconstructions of man-made and natural tunnels coating materials, geo-mechanical survey of rock mass, map of rock collapses and cinematic analysis of instability processes. [8] Based on the ground shear strain value, Bungkah has values ranging from 10−3 to 10−1, the phenomenon that will occur is landslides with the dynamic nature of the soil included in the category of soil or rock collapse. [9] The strata movement caused by mining can be divided into the stage of overburden rock collapse in the goaf and the stage of surrounding surrounding rock dumping and failure in the goaf. [10] 3% of deaths in the mining sites are caused by rock collapse. [11] We show that type A PSFs are non-ice-contact rock collapses that occur as a long-term paraglacial response following glacier downwasting and the exposure of steep rocky cliffs and which could also be influenced by precipitation, freeze-thaw cycling, earthquakes or other factors. [12] Through monitoring data analysis and numerical simulation of dangerous rock collapse after coal mining, the landslide deformation mechanism is analyzed. [13] However, few studies have clearly addressed the role of water/ice in crack development from a fracture mechanics viewpoint to explain the seasonality of rock collapse. [14] In this zone, unfavorable phenomena, such as rock collapses, displacements, etc. [15]地下采矿或洞穴中的泥石流、斜坡落石、岩石坍塌和岩爆等岩土灾害与天然岩体稳定性的力学行为密切相关。 [1] 它显示出许多显着的地貌特征，包括：（1）在缓慢的基础水平加深的初始阶段发育的两个阶梯式平坦表面切割折叠的石膏，并被稳定期打断； (2) 与随后的快速河流切开和地下水位降低阶段有关的不寻常的深深根深蒂固的石膏峡谷； (3) 主要发育在上地表的多边形岩溶，质量极好； (4) 被下侵蚀面的天坑破坏的孑遗谷地； (5) 大量基岩塌陷落水洞，大多与下表面伴生； (6) 谷底发育大量覆盖沉陷坑。 [2] 传统的裂缝地层井筒失稳预测方法无法有效解决超深裂缝性油藏围岩塌陷问题。 [3] 然而，很少有工作从断裂力学的角度清楚地解决水/冰在裂缝发展中的作用，以解释岩石坍塌的季节性。 [4] 根据理论方程的计算结果，利用振动传感器可以实现对悬臂岩石稳定性动态变化的监测和岩石坍塌的预警。 [5] 该研究为岩石塌陷提供了重要的预警指标。 [6] 人造和天然隧道涂层材料的详细几何 3D 重建、岩体的地质力学调查、岩石坍塌地图和不稳定过程的电影分析。 [7] 利用最先进的激光扫描测量技术和一些特定的点云分析算法，已经产生了几个输出，特别是人造和天然隧道涂层材料的详细几何 3D 重建、岩体的地质力学测量、地图岩石坍塌和不稳定过程的电影分析。 [8] 根据地面剪切应变值，Bungkah 的值在 10-3 到 10-1 之间，将发生的现象是滑坡，土壤的动态性质属于土壤或岩石塌陷的范畴。 [9] 开采引起的地层运动可分为采空区覆岩塌陷阶段和采空区围岩倾倒破坏阶段。 [10] 矿区 3% 的死亡是由岩石坍塌造成的。 [11] 我们表明，A 型 PSF 是非冰接触岩石塌陷，是冰川下消和陡峭岩石悬崖暴露后的长期副冰河反应，也可能受到降水、冻融循环、地震或其他因素的影响因素。 [12] 通过对采煤后危险岩体坍塌的监测数据分析和数值模拟，分析了滑坡的变形机制。 [13] 然而，很少有研究从断裂力学的角度清楚地解决水/冰在裂缝发展中的作用，以解释岩石坍塌的季节性。 [14] 在该区域内，岩石崩塌、位移等不利现象不断出现。 [15]