CN103410137A

CN103410137A - Structural type sand prevention and control technology

Info

Publication number: CN103410137A
Application number: CN2013103651832A
Authority: CN
Inventors: 李润杰; 张金旭; 松下纯一; 刘得俊; 郭凯先; 吴智仁
Original assignee: Qinghai Research Institute Of Water Resources And Hydropower
Current assignee: Qinghai water conservancy and hydropower Scientific Research Institute Co., Ltd.
Priority date: 2013-08-21
Filing date: 2013-08-21
Publication date: 2013-11-27
Anticipated expiration: 2033-08-21
Also published as: CN103410137B

Abstract

The invention discloses a structural type sand prevention and control technology and relates to the field of desertification control. The structural type sand prevention and control technology comprises the following steps of: paying-off, mixing slurry, dressing seeds, making sand barriers, demolding, sowing and harrowing, watering and spraying a sand solidification agent. The structural type sand prevention and control technology has the following advantages that local materials are used; the resistance to wind-erosion hazards can reach 95%-98% through local wind-erosion resistant experiments, the produced checkered sand barriers are just like fish scale pits to achieve water collection and retention and fertilizer retention functions; the seedling emergence rate and the survival rate of plants are improved; the economic cost is low; the environmental pollution is small; the plant growth is facilitated; the wind-erosion hazards are effectively reduced; and the sand-stabilizing plant growth is promoted.

Description

A kind of structural type technology of defending and controlling sand

One, technical field

The present invention relates to the desertification treatment field, particularly a kind of structural type technology of defending and controlling sand.

Two, technical background

China is that desertification in the world and desertification area are large, one of wide, that harm the is heavy country that distributes, and serious desertification of land, desertifying is threatening the sustainable development of China's ecological safety and economic society, threatens the survival and development of the Chinese nation.2004, the whole nation Desertification Soil gross area is 263.62 ten thousand square kilometres, account for 27.46% of territory total area, be distributed in Beijing, Tianjin, Hebei, Shanxi, the Inner Mongol, Liaoning, Jilin, Shandong, Henan, Hainan, Sichuan, Yunnan, Tibet, Shaanxi, Gansu, Qinghai, Ningxia, De498Ge county, 18, Xinjiang province (autonomous region, municipality directly under the Central Government) (Qi, city).End 2004, national sandy land area is 173.97 ten thousand square kilometres, accounts for 18.12% of territory total area, is distributed in 30 provinces (autonomous region, municipality directly under the Central Government) De889Ge county (Qi, district) except Shanghai, Taiwan and Hong Kong and Macao Special Administrative Region.Soil with obvious desertification trend mainly refers to the critical a kind of degraded land between desertification and non-sandy land caused due to reasons such as soil excessive use or water resources shortages, although be not also sandy land at present, has had obvious desertification trend.The land area that the whole nation has obvious desertification trend is 31.86 ten thousand square kilometres, accounts for 3.32% of territory total area.Mainly be distributed in the Inner Mongol, Xinjiang, Qinghai, Gansu 4 provinces (autonomous region), area is respectively 18.08 ten thousand square kilometres, 4.81 ten thousand square kilometres, 4.20 ten thousand square kilometres, 2.58 ten thousand square kilometres, its area account for the whole nation have obvious desertification trend land area 93.13%.Sand control at present and prevent desertification become a world-famous puzzle.The technology of existing sand control and prevent desertification is a lot, and as all undesirable as chemical sand-fixing technology, afforestation technology etc., financial cost is high, and environment pollution is unfavorable for plant growth, can not effectively reduce wind erosion infringement and sand-fixation plant growth.

Three, summary of the invention

For the problem that above-mentioned prior art exists, the present invention intends providing a kind of structural type technology of defending and controlling sand, and effectively reduces the resolution of wind erosion infringement and the combination of plantation sand-fixation plant growth phase.The technical scheme of taking is: a kind of structural type technology of defending and controlling sand, and it is comprised of following steps: unwrapping wire → mix slurry → seed dressing → sand-protecting barrier → demoulding processed → sowing to rake the soil level → water → the spraying sand-consolidating agent; First step unwrapping wire, according to the landform unwrapping wire, laterally every 2.0m ~ 3.0m interval unwrapping wire, vertically every 1.5m ~ 2.5m interval unwrapping wire becomes grid-like; Second step is mixed slurry, and at first water fully waters sand, then by husky tile adhesive and sand uniform stirring, and it is standby that the ratio of husky tile adhesive and sand is that 1:4 ~ 5 stir, and husky brick is bonded as swell soil or clay; The 3rd step seed dressing, before 12 hours, that grass-seed is wet with bubble in advance, then by grass-seed and the Diammonium phosphate (DAP) ratio mixing for standby use according to 1:3 ~ 3.5; The 4th step sand-protecting barrier processed, mould is propped up on the line that the first step is put, the width of mould is 15～35cm, be highly 15～35cm, the compound that second step is standby is poured tamping in mould into, during from die tip 2～3cm, is sprinkled into the standby grass-seed of the 3rd step, and then covers the mixing slurry of 2～3cm, pat and get final product, make grid-like sand-protecting barrier; The 5th step demoulding, slough the mould on the sand that makes barrier both sides to get final product; The 6th step sowing is raked the soil level, and the grass-seed that the 3rd step is standby carries out artificial uniform broadcasting according to 3kg～4kg/mu and urea or NPK composite fertilizer by the dose of 10kg～11kg/mu in grid, then with rake, gently harrow earthing, and thickness of earth covering is 2～3cm; The 7th step is watered, and with the grid internal spraying, waters on ready-made sand-protecting barrier; The 8th step spraying sand-consolidating agent, sand-consolidating agent is the modified hydrophilic based polyurethane, the mass concentration by sand-consolidating agent and water in the sand-protecting barrier of making and grid is the quantity for spray spraying sand-consolidating agent of 3.5%～4.5%, 50kg～70kg/mu.

The present invention has following beneficial effect, utilization is gathered materials on the spot, by the weather-proof experiment in locality, the wind erosion infringement can reach 95% ~ 98%, and the grid sand-protecting barrier of making is as fish-scale pit, catchment, water conservation, fertilizer conservation, improved emerging and survival rate of plant, financial cost is low, and environment pollution is slight, be beneficial to plant growth, effectively reduce wind erosion infringement and sand-fixation plant growth.

Four, the specific embodiment:

Embodiment 1:It is comprised of following steps: unwrapping wire → mix slurry → seed dressing → sand-protecting barrier → demoulding processed → sowing to rake the soil level → water → the spraying sand-consolidating agent; First step unwrapping wire, according to the landform unwrapping wire, laterally every 2.0m interval unwrapping wire, vertically become grid-like every 1.5m interval unwrapping wire; Second step is mixed slurry, and at first water fully waters sand, then by husky tile adhesive and sand uniform stirring, and it is standby that the ratio of husky tile adhesive and sand is that 1:4 stirs, and husky brick is bonded as swell soil or clay; The 3rd step seed dressing, before 12 hours, that grass-seed is wet with bubble in advance, then by grass-seed and the Diammonium phosphate (DAP) ratio mixing for standby use according to 1:3; The 4th step sand-protecting barrier processed, mould is propped up on the line that the first step is put, the width of mould is 15cm, be highly 15cm, the compound that second step is standby is poured tamping in mould into, during from die tip 2cm, is sprinkled into the standby grass-seed of the 3rd step, and then covers the mixing slurry of 2cm, pat and get final product, make grid-like sand-protecting barrier; The 5th step demoulding, slough the mould on the sand that makes barrier both sides to get final product; The 6th step sowing is raked the soil level, and the grass-seed that the 3rd step is standby carries out artificial uniform broadcasting according to 3kgkg/mu and urea or NPK composite fertilizer by the dose of 10kg/mu in grid, then with rake, gently harrow earthing, and thickness of earth covering is 2cm; The 7th step is watered, and with the grid internal spraying, waters on ready-made sand-protecting barrier; The 8th step spraying sand-consolidating agent, sand-consolidating agent is the modified hydrophilic based polyurethane, the mass concentration by sand-consolidating agent and water in the sand-protecting barrier of making and grid is the quantity for spray spraying sand-consolidating agent of 3.5%, 50kg/mu.

Embodiment 2:It is comprised of following steps: unwrapping wire → mix slurry → seed dressing → sand-protecting barrier → demoulding processed → sowing to rake the soil level → water → the spraying sand-consolidating agent; First step unwrapping wire, according to the landform unwrapping wire, laterally every 3.0m interval unwrapping wire, vertically become grid-like every 2.5m interval unwrapping wire; Second step is mixed slurry, and at first water fully waters sand, then by husky tile adhesive and sand uniform stirring, and it is standby that the ratio of husky tile adhesive and sand is that 1:5 stirs, and husky brick is bonded as swell soil or clay; The 3rd step seed dressing, before 12 hours, that grass-seed is wet with bubble in advance, then by grass-seed and the Diammonium phosphate (DAP) ratio mixing for standby use according to 1:3.5; The 4th step sand-protecting barrier processed, mould is propped up on the line that the first step is put, the width of mould is 35cm, be highly 35cm, the compound that second step is standby is poured tamping in mould into, during from die tip 3cm, is sprinkled into the standby grass-seed of the 3rd step, and then covers the mixing slurry of 3cm, pat and get final product, make grid-like sand-protecting barrier; The 5th step demoulding, slough the mould on the sand that makes barrier both sides to get final product; The 6th step sowing is raked the soil level, and the grass-seed that the 3rd step is standby carries out artificial uniform broadcasting according to 4kg/mu and urea or NPK composite fertilizer by the dose of 11kg/mu in grid, then with rake, gently harrow earthing, and thickness of earth covering is 3cm; The 7th step is watered, and with the grid internal spraying, waters on ready-made sand-protecting barrier; The 8th step spraying sand-consolidating agent, sand-consolidating agent is the modified hydrophilic based polyurethane, the mass concentration by sand-consolidating agent and water in the sand-protecting barrier of making and grid is the quantity for spray spraying sand-consolidating agent of 4.5%, 70kg/mu.

Claims

1. structural type technology of defending and controlling sand, is characterized in that it is comprised of following steps: unwrapping wire → mix slurry → seed dressing → sand-protecting barrier → demoulding processed → sowing to rake the soil level → water → the spraying sand-consolidating agent; First step unwrapping wire, according to the landform unwrapping wire, laterally every 2.0m ~ 3.0m interval unwrapping wire, vertically every 1.5m ~ 2.5m interval unwrapping wire becomes grid-like; Second step is mixed slurry, and at first water fully waters sand, then by husky tile adhesive and sand uniform stirring, and it is standby that the ratio of husky tile adhesive and sand is that 1:4 ~ 5 stir, and husky brick is bonded as swell soil or clay; The 3rd step seed dressing, before 12 hours, that grass-seed is wet with bubble in advance, then by grass-seed and the Diammonium phosphate (DAP) ratio mixing for standby use according to 1:3 ~ 3.5; The 4th step sand-protecting barrier processed, mould is propped up on the line that the first step is put, the width of mould is 15～35cm, be highly 15～35cm, the compound that second step is standby is poured tamping in mould into, during from die tip 2～3cm, is sprinkled into the standby grass-seed of the 3rd step, and then covers the mixing slurry of 2～3cm, pat and get final product, make grid-like sand-protecting barrier; The 5th step demoulding, slough the mould on the sand that makes barrier both sides to get final product; The 6th step sowing is raked the soil level, and the grass-seed that the 3rd step is standby carries out artificial uniform broadcasting according to 3kg～4kg/mu and urea or NPK composite fertilizer by the dose of 10kg～11kg/mu in grid, then with rake, gently harrow earthing, and thickness of earth covering is 2～3cm; The 7th step is watered, and with the grid internal spraying, waters on ready-made sand-protecting barrier; The 8th step spraying sand-consolidating agent, sand-consolidating agent is the modified hydrophilic based polyurethane, the mass concentration by sand-consolidating agent and water in the sand-protecting barrier of making and grid is the quantity for spray spraying sand-consolidating agent of 3.5%～4.5%, 50kg～70kg/mu.