Effective mole control is often difficult to achieve. Various types of traps, baits, and fumigants have been developed over the years to reduce mole damage to lawns, golf courses, and other areas. Two studies were conducted in the St. Louis, Missouri area to field test products currently registered by the EPA for mole control. Reliable census methods are required to determine efficacy. The best...

A low-clearance tunnel portal in the shallow-buried, joint-developed, broken, and loose surrounding rock slope deposit may cause safety issues during construction. In this study, Guanyin Mountain Tunnel of Chong-Ai expressway was taken as a case characteristics broken rocks, their low clearance, shallow buried bias were comprehensively studied. The three-dimensional numerical model section cons...

The development and extension of large cities induced a need for shallow tunnel in soft ground of building areas. Estimation of ground settlement caused by the tunnel excavation is important engineering point. In this paper, prediction of surface subsidence caused by tunneling in one section of seventh line of Tehran subway is considered. On the basis of studied geotechnical conditions of the r...

Based on the finite element limit analysis method, stability of face in case active failure under three constitutive models, Mohr-Coulomb model (MC), modified Cambridge (MCC) and Drucker-Prager (DP), were analyzed. The ultimate support pressure influence factors such as different burial depth ratios ( C/D ), cohesion c ) friction angle φ MC are also discussed. results show that safety factor ob...

Shallow bias tunnels are sensitive at the entrance section, where existence of soil–rock interface (SRI) results in more complex deformation surrounding rock and supporting structure. This study investigates mechanical properties structure a shallow-buried tunnel crossing by combination model tests numerical simulations. A biased with significant cracking its section is selected southwest China...

This article investigates and presents a case study on the Beijing Subway Line 12 excavation beneath existing Qinghuayuan Tunnel. The composite pre-reinforcement technique was used in conjunction with shallow tunneling method to control distortion of large-diameter tunnel. When building twin tunnels underneath, this strategy considerably decreased impact To systematically mechanical response tu...

Abstract After reviewing many literature foundations, the thesis combines basic methods of elastic mechanics with mathematical knowledge, sets bipotential stress potential complex function and analyses relationship between component, strain component function, applies variable function. The expression relevant is derived, displacement boundary conditions surrounding rock shallow circular tunnel...