surrounding rock造句
The surrounding rock support were constructed by layers as the down excavation of steps.
If the volcanoes become inactive and cool down, the surrounding rock may be eroded.
The rheologic model has been used to analyze the interaction between shaft wall and viscoelasticviscoplastic surrounding rock in soft rock stratum.
Salt has lower density than the surrounding rock, so it tends to flow upwards, pushing up the overlying layers of rock to form a dome.
If the surrounding rock is soft and is later worn away, the walls remain and form ridges called dikes.
The ore and surrounding rock in Luoyang mining area of Panluo Iron Mine are of stable type, where open stoping method is adopted.
Extreme type I isn′t equal to be probability distribution of cohesion and internal friction angle of clinosol and residual cohesive soil surrounding rock.
The equilibrium equation of surrounding rock mining fault system is established. The fault destablizing process with shear failure pattern belongs to fold catastrophe model.
Main construction points of Qingfang hospital station on Qingdao subway under the condition of hard surrounding rock are described. Blasting control and vibration monitoring are stressedly introduced.
Gold bodys are metasomatic vains, and was generated by diorite and surrounding rock which suffered multi-stage breccia, silicification and sericite hydrothermal alteration.
The main factors effecting of slipping area along the bed rock and roof separation and failure area and the major avenue of damage surrounding rock caused by mining are analyzed in this paper.
By the field monitoring measurement and the applying of FEM, we can monitor the construction procedure to ensure the stability of the surrounding rock and the safety of lining.
During the initial excavation, the tender coal seam workings in deep seam in Nantun Colliery takes on slocking of roof, with breaking-out in bulk coal and surrounding rock failure.
For tunnel sections with good surrounding rocks, the U-shaped rock-bolted section is selected as a final optimized section instead of the original circular reinforcement concrete lining section.
The plastic zone of the surrounding rock mainly concentrates around the tunnel and the two sides of karst cave while the top and the bottom of karst cave have little plastic zone.
Based on the simplified structure of rock mass, FLAC(superscript 3D) numerical modeling technique is used to systematically analyze the distribution features of the secondary stress field, strain field and plastic zones in the surrounding rock mass of the underground cavities after the excavation.
The distinguished equation of surrounding rock's stress-state was given.
The non-harmonious control mechanism of surrounding rocks of roadways with weak structures was analyzed.
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