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Method for preventing loss of paleozoic and mesozoic sedimentary rocks

A technology for sedimentary rocks and rock blocks, applied in the fields of ecological restoration and soil and water conservation, can solve the problems of unfavorable plant root growth, plant drought stress, and high hardness of sedimentary rocks, and achieve the effects of significant soil erosion control, simple operation, and improved ecological environment.

Active Publication Date: 2014-05-07
陕西地建土地工程技术研究院有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the applicant's investigation, most of the domestic and foreign research reports on the prevention and control of the loss of Paleo- and Mesozoic sedimentary rocks focus on the selection of test plant species. Due to the high hardness of sedimentary rocks and poor water characteristics, it is not conducive to the growth of plant roots, and the plants are severely drought-stressed. survive
At present, there are few reports on the use of additives to improve the texture and properties of Paleo-Mesozoic sedimentary rocks, making them suitable for vegetation growth, thereby fixing weathered sedimentary rocks

Method used

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  • Method for preventing loss of paleozoic and mesozoic sedimentary rocks

Examples

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Effect test

Embodiment 1

[0053] In Dajihan Village, Xiaojihan Township, Yuyang District, Yulin City, the local sand was taken on the spot, and the sand was mixed with the local Paleo-Mesozoic sedimentary rocks at a volume ratio of 1:1. Firstly, the sedimentary rock on the surface of the exposed area of ​​the Paleo-Mesozoic sedimentary rock is crushed into particles of 3-4 cm in size, sand is spread on the surface of the pulverized sedimentary rock, and then the surface layer is mechanically rotated to a depth of 30 cm, so that the thickness of the composite layer of sand and Paleo-Mesozoic sedimentary rock is 30cm, the total renovation area is 300 mu, and alfalfa is planted. Five 1m×1m quadrats were selected for vegetation survey, and the average emergence rate reached 76%. In August, the survey was carried out during the vigorous growth period of alfalfa, and the coverage reached 65%. After investigation, the loss of Paleo and Mesozoic sedimentary rocks in the transformed area slowed down after plant...

Embodiment 2

[0055] In Wumaozi Township, Dingbian County, Yulin City, Shaanxi Province, the local sand was taken on the spot, and the sand was mixed with the local Paleo-Mesozoic sedimentary rocks at a volume ratio of 1:1. Firstly, the sedimentary rock on the surface of the exposed area of ​​the Paleo-Mesozoic sedimentary rock is crushed into particles of 2-4 cm in size, sand is spread on the surface of the pulverized sedimentary rock, and then the surface layer is mechanically rotated to a depth of 30 cm, so that the thickness of the composite layer of sand and Paleo-Mesozoic sedimentary rock is 30cm, the total area of ​​reconstruction is 180 mu, and seabuckthorn is planted. In August, five 1m×1m quadrats were selected for vegetation survey during the vigorous growth period of seabuckthorn. It was found that the vegetation coverage reached 60%. After investigation, the loss of Paleo-Mesozoic sedimentary rocks in the transformed area slowed down after planting. It can be seen from this emb...

Embodiment 3

[0057] In Mengjiawan Village, Mengjiawan Township, Yuyang District, Yulin City, Shaanxi Province, the local sand was collected locally, and the sand was mixed with the local Paleo-Mesozoic sedimentary rocks at a volume ratio of 1.5:1. Firstly, the sedimentary rocks on the surface of the exposed area of ​​the Paleo-Mesozoic sedimentary rocks are crushed into 3-4cm-sized particles, and the sand is spread on the surface of the crushed sedimentary rocks, and then the surface layer is mechanically rotated to a depth of 30 cm, so that the composite layer thickness of the sand and the Paleo-Mesozoic sedimentary rocks is 30cm. The total area of ​​transformation is 240 mu, and alfalfa is planted, and its emergence rate and coverage are investigated in different periods, and the same effect as that of Example 2 can be achieved. Therefore, the method of this embodiment has remarkable water and soil conservation effect.

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Abstract

The invention discloses a method for preventing the loss of sedimentary rocks. The method comprises the following steps: the surfaces of the exposed areas of the paleozoic and mesozoic sedimentary rocks are crushed into rock blocks, and then the sand is laid on the paleozoic and mesozoic sedimentary rocks; the sand and the paleozoic and mesozoic sedimentary rocks are fully mixed to obtain a composite layer with the thickness being 30cm, and in the composite layer, the volume ratio of the paleozoic and mesozoic sedimentary rocks to the sand is 1:1; and a plant suitable for the local environmental conditions is grown in the composite layer according to the conventional method, and is selected from one of alfalfa and sea buckthorn. In the method, the raw materials are easily obtained, the supply of the raw materials is enough, the method is simple, the operation is easy, the engineering cost is greatly reduced, and the feasibility and the operability are improved. By verification, the composite layer consisting of the paleozoic and mesozoic sedimentary rocks and the sand has the advantages that the permeability and the water retaining property are good, the growing requirements of the plant can be met and the loss of the sedimentary rocks can be effectively prevented.

Description

technical field [0001] The invention relates to the field of ecological restoration and water and soil conservation, in particular to a method for preventing and controlling the loss of ancient and Mesozoic sedimentary rocks. Background technique [0002] On the southern edge of the Mu Us Sandy Land, in the bordering areas of Shanxi, Shanxi and Mongolia in the Yellow River Basin, there are loose rock layers of Paleozoic and Mesozoic sedimentary rocks, specifically referring to the thick sandstones of the Paleozoic Permian, Mesozoic Triassic, Jurassic and Cretaceous , sand shale and mudstone interbedded, low degree of diagenesis, poor degree of intergranular cementation, low structural strength, easy weathering, poor permeability, easy to disperse in water. There is also a large area of ​​sand in this area. The sand particles have large pores, strong permeability, few small pores, weak capillary action, loose soil texture, poor water retention and low water storage capacity. ...

Claims

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Application Information

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IPC IPC(8): E02D3/00
Inventor 韩霁昌
Owner 陕西地建土地工程技术研究院有限责任公司