Reclamation method of subsided farm land after earthquake disaster

A technology for cultivated land and earthquakes, which is applied in the field of reclamation of subsided cultivated land after earthquakes, can solve the problems that there is no good method for subsidized cultivated land management, and achieve the effects of restoring and improving the biological environment of farmland, saving coverage thickness, and high economic and environmental benefits

Active Publication Date: 2011-01-26
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Reclamation method of subsided farm land after earthquake disaster
  • Reclamation method of subsided farm land after earthquake disaster
  • Reclamation method of subsided farm land after earthquake disaster

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Embodiment Construction

[0018] A kind of post-earthquake subsidence cultivated land reclamation method proposed by the present invention, the specific implementation steps are described in detail as follows:

[0019] The present invention first carries out on-the-spot investigation of the subsidence area (mostly funnel-shaped or deep pit) after the earthquake before reclamation. Determine the scope, depth and area of ​​the collapsed cracks, investigate the surrounding environment, determine the place where the topsoil is piled up, and calculate the filling volume. The specific steps of the embodiment of the method for reclamation of cultivated land subsidence after the earthquake disaster of the present invention are as follows:

[0020] 1) Strip the topsoil on the collapsed cultivated land caused by the earthquake: strip the topsoil in the subsidence area and the edge caused by the earthquake, the thickness of the stripped topsoil is 30-50cm, and put the stripped topsoil in the topsoil field (the to...

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Abstract

The invention relates to a reclamation method of subsided farm land after an earthquake disaster, belonging to the technical field of environment, ecology and waste land treatment and utilization. The method comprises the following steps of: carrying out surface soil peeling on subsided farm land caused by earthquake; filling and primarily shaping the peeled subsided area; carrying out insulating material covering and laminating on the primarily shaped subsided area; covering soil on the subsided area covered by the insulating material to further shape; and carrying out a biological improvement project on the soil covered and shaped subsided area. The invention ensures that the land damaged by the earthquake can be recycled and reach a higher production level as soon as possible so as to form a stale self-sustaining farm sustaining system, improve the microorganism contents of the soil, improve the physical and chemical properties of the soil and form a benign ecological system circulation.

Description

technical field [0001] The invention belongs to the technical field of environment, ecology and abandoned land management and utilization, and in particular relates to a method for reclamation of subsided cultivated land after an earthquake. Background technique [0002] On May 12, the magnitude 8.0 earthquake in Yingxiu Town, China severely affected some counties and cities in Sichuan, Gansu, Shaanxi and other provinces. The affected area reached 440,000 square kilometers and the affected population reached more than 40 million people. On April 14, the magnitude 7.1 earthquake in Yushu, Qinghai Province, the affected area was estimated to be more than 20,000 square kilometers, and the hardest hit area was estimated to be more than 4,000 square kilometers. The earthquake killed 2,220 people, 70 people were missing, and the number of victims reached 200,000. The earthquake caused mountain fragmentation, subsidence of ground fissures, landslides, topsoil and vegetation landsli...

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Application Information

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IPC IPC(8): A01B79/02
Inventor 胡振琪李晓静
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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