What should be done first in the general procedure of landslide control?

The general procedure of landslide treatment should first reinforce the unstrained part near the landslide (generally 3~5m? Scope), to prevent further expansion of landslides.

1, processing method:

Do a good job in ensuring all kinds of equipment, tools, lighting and mechanical equipment, so as not to delay the opportunity when dealing with landslides. Grasp the "temporary stability period" after collapse as soon as possible, carry out initial support such as shotcrete on the collapsed surface, and then clean up the collapsed muck. This is the specific application of the "small collapse cleaning" method. In the event of a large landslide, the collapsed slag has blocked the tunnel face, or collapsed like "biscuit slag".

It is necessary to seal the slag collapse surface with shotcrete, and after strengthening the part that has not collapsed behind, the surrounding rock is grouted forward to form an integral stress shell, and then excavation is carried out; Slag cleaning should be carried out from outside to inside, and at the same time, supporting slag cleaning should be carried out step by step. Using one or more of the bad geological construction methods such as anchor rod, steel arch, advanced pipe shed, hanging steel mesh and shotcrete, the landslide section is comprehensively treated.

2. Brief introduction of landslide:

The top of the tunnel suddenly collapses due to poor stratum structure, rain erosion or construction defects, steep slopes near roads and dams or tunnels. Also known as collapse. The main types of landslides are rainfall landslides, earthquake landslides and building landslides.

Matters needing attention and general principles of landslide treatment:

Precautions:

According to the above reasons, it is the most active and wise way to do a good job of prevention and prevent landslides. After the landslide, isolation facilities and warning signs should be set up quickly, and lighting should be done to prevent irrelevant personnel and mechanical equipment from entering. After the landslide, don't blindly slag, especially the "biscuit slag" that everyone says, to prevent the landslide.

Resulting in a situation that is more difficult to clean up. Landslide survey shall be conducted under the supervision of technicians and safety personnel, and the survey and evacuation routes shall be selected in advance, and necessary protective measures shall be taken.

General principles of landslide treatment:

It is safe, rapid, effective and economical, and follows the principles of "small clearing collapse, large penetrating collapse", "water control before collapse", "short excavation, weak blasting and strong support". Follow the principles of "diligent inspection, diligent measurement", "easy first, difficult later, subsection panic" and "dynamic construction and dynamic management", organize lean operation teams, and conduct unified command and surprise operations in strict accordance with the plan.