Landslide management methods

December 20, 2015 in Shenzhen Guangming New landslide disaster shocked the nation, since this disaster happened receiving the report to verify the total number of personnel lost contact with 77 people. 58 victims were found at the scene . After investigation, the collapsed body in Shenzhen Guangguangming New District was artificially piled up and the original mountain body did not slide. The collapsed site belongs to the silt and soil storage site and mainly contains muck and construction waste. Due to the large amount of accumulation, many buildings collapsed.

The Shenzhen landslide said that disasters are essentially man-made disasters. Therefore, for the common landslides in cities, scientific management measures should be established to prevent such accidents from happening again.

First, slope management measures

1. To establish and improve the slope management system, establish a slope monitoring system, establish full-time institutions, and personnel to manage slopes.

2. Strengthen surface water management, improve the Quaternary gushing drainage system, prevent slope water from infiltrating the slope, and strictly prohibit slope surface water from flowing along the slope.

3. Establish a temporary deformation monitoring line for the slope in the non-stable area, and perform necessary deformation prediction or landslide forecasting.

4. During the rainy season, strengthen the slope inspection and encryption deformation observation.

5. Formulate landslide emergency rescue plan.

6. A long-term monitoring system for slope stability shall be established in production to monitor the deformation and damage of the slope and prevent the occurrence of undesirable engineering geological phenomena.

7, to control rain water, ground water infiltration inside bottom Dump, is recommended to achieve a final dump position flat plate and a layer of impermeable clay slope convenient source or alternative machine with a press compaction channel, a barrier layer is formed , on which a further layer of soil is to be planted to green the vegetation; when the earth is dumped, a 10-m wide water wall is to be discharged along the edge of the boundary to reduce groundwater infiltration.

8. In actual production, it should be noted that the slope angle of inner row of steps and the working slope angle of inner row can not be greater than the design value, and the deformation of the inner dump should be monitored at all times. If there is any sign of displacement or deformation , measures must be taken in time. Treatment may lead to inducing factors for landslides in the dump.

9, internal dump at most must be sufficient safe distance between its base and the mining face one step.

10. The internal dumping site must adopt effective anti-drainage measures to prevent or reduce the flow of water into the dump.

11. The stope of the stope and dumping site should be regularly inspected and signs of landslides must be set up. Slope with a haul road, harvesting machinery and important facilities, must take safety measures.

2. When the final slope position is reached, the following requirements shall be implemented:

1. The final slope angle of a good step should not be over-excavated, especially coal steps.

2. In the case of out-of-bounds steps with outcrop coal, measures shall be taken to prevent weathering of exposed coal, spontaneous combustion, and landslide along the floor of the coal seam.