阅读说明：本技术 一种黄土管沟防水用化学泥浆及其制备方法 (A kind of loess pipe trench waterproof chemical slurry and preparation method thereof ) 是由 李亮亮 谭东杰 吴张中 卢启春 荆宏远 徐震 欧新伟 王禹钦 张巍 张晏博 石俊 于 2018-05-21 设计创作，主要内容包括：本发明公开了一种黄土管沟防水用化学泥浆及其制备方法,属于油气管道管沟的防水施工领域。该化学泥浆通过以下重量百分比的组分制备得到：黄土65～70％,熟石灰10～15％,水玻璃与氯化钙混合液3.5～5％,腐殖酸纳2.5～4％,和余量的水；其中,水玻璃与氯化钙的质量配比为4:1～5:1。本发明实施例通过上述组分之间的协同复配制备得到的化学泥浆,渗透率低、硬化快,所采用的原料成本低,且易于购得和运输,能够减小施工人员的工作量,降低成本。采用该化学泥浆修建防水坑,可降低黄土管沟土层的渗透性,有效防治黄土地区油气管道管沟的水土流失,且不会腐蚀管道防腐层。(The invention discloses a kind of loess pipe trench waterproof chemical slurries and preparation method thereof, belong to the waterproof construction field of oil-gas pipeline pipe trench.The chemical slurry is prepared by following components in percentage by weight: loess 65~70%, white lime 10~15%, waterglass and calcium chloride mixed liquor 3.5~5%, and humic acid receives the water of 2.5~4% and surplus；Wherein, the quality proportioning of waterglass and calcium chloride is 4:1~5:1.The chemical slurry that the embodiment of the present invention is prepared by the collaboration compounding between said components, permeability is low, hardening is fast, and used cost of material is low, and is easy to buy and transport, and can reduce the workload of construction personnel, reduce cost.Waterproof pit is built using the chemical slurry, the permeability of loess pipe trench soil layer can be reduced, effectively prevents the soil erosion of Canal in Loess Area oil-gas pipeline pipe trench, and will not corrosion pipeline erosion resistant coating.)

1. a kind of loess pipe trench waterproof chemical slurry, which is characterized in that the chemical slurry passes through following weight percent Component is prepared:

Loess 65~70%, white lime 10~15%, waterglass and calcium chloride mixed liquor 3.5~5%, humic acid receives 2.5~ 4% and surplus water；

Wherein, the quality proportioning of waterglass and calcium chloride is 4:1~5:1.

2. loess pipe trench waterproof chemical slurry according to claim 1, which is characterized in that the chemical slurry by with The component of lower weight percent is prepared:

Loess 70%, white lime 10%, waterglass and calcium chloride mixed liquor 4%, humic acid receive the water of 3% and surplus；

Wherein, the quality proportioning of waterglass and calcium chloride is 4:1.

3. loess pipe trench waterproof chemical slurry according to claim 1, which is characterized in that the chemical slurry by with The component of lower weight percent is prepared:

Loess 68%, white lime 15%, waterglass and calcium chloride mixed liquor 4%, humic acid receive the water of 3% and surplus；

Wherein, the quality proportioning of waterglass and calcium chloride is 5:1.

4. a kind of preparation method of loess pipe trench waterproof chemical slurry, which is characterized in that the preparation method includes following step It is rapid:

Step a, loess is added in blender, opens the blender；

Step b, Jiang Shui, waterglass and calcium chloride mixed liquor, humic acid are received sequentially adds in the blender with white lime；

Wherein, the weight percent of each component is respectively as follows: loess 65~70%, white lime 10~15%, waterglass and calcium chloride Mixed liquor 3.5~5%, humic acid receive the water of 2.5~4% and surplus；

The quality proportioning of waterglass and calcium chloride is 4:1~5:1.

5. the preparation method according to claim 4, which is characterized in that in the step b, blender is repeatedly added in moisture In.

6. the preparation method according to claim 4, which is characterized in that in the step b, waterglass is mixed with calcium chloride Liquid is added in blender several times.

7. the preparation method according to claim 4, which is characterized in that in the step b, humic acid is received and is added several times In blender.

8. the preparation method according to claim 4, which is characterized in that in the step b, white lime is added several times and is stirred It mixes in machine.

9. the preparation method according to claim 4, which is characterized in that the weight percent of each component is respectively as follows:

Loess 70%, white lime 10%, waterglass and calcium chloride mixed liquor 4%, humic acid receive the water of 3% and surplus；

Wherein, the quality proportioning of waterglass and calcium chloride is 4:1.

10. the preparation method according to claim 4, which is characterized in that the weight percent of each component is respectively as follows:

Loess 68%, white lime 15%, waterglass and calcium chloride mixed liquor 4%, humic acid receive the water of 3% and surplus；

Wherein, the quality proportioning of waterglass and calcium chloride is 5:1.

Technical field

The present invention relates to the waterproof construction field of oil-gas pipeline pipe trench, in particular to the chemical mud of a kind of loess pipe trench waterproof Slurry and preparation method thereof.

Background technique

The existing a plurality of oil-gas pipeline in China passes through Canal in Loess Area, such as transfer natural gas from the west to the east a line, two wires, Ma Huining crude oil pipe Road, puckery peaceful blue gas pipeline, Lan Zhengchang processed oil pipeline, Shan capital gas pipeline etc., these pipelines are embedded in fine grain mostly In powder loess.And In Soils of The Loess Region concreteness is poor, water stability is poor, and the soil erosion along pipe trench direction easily occurs, and forms pipe trench It collapses and pipe week hole, causes that buried depth of pipeline is insufficient, dew pipe or hanging, cause the threat to the normal operation of pipeline.

The poor water stability of loess makes the pipe trench soil erosion of loess area become abnormal easy, and the seepage flow of pipe trench water is then Form the immediate cause of soil erosion.In the prior art, it for the seepage flow of obstructing tube ditch-water, prevents erosion, generallys use The method for building water stop pours into wall along the direction of vertical pipe trench using the low cement concrete of permeability, carrys out obstructing tube The seepage flow of ditch-water.

Inventor discovery in the prior art the prior art has at least the following problems:

Cement concrete is mixed and stirred by cement, sand, stone, additive and water, and a kind of artificial stone made of hardened is making During standby cement concrete, need to transport a large amount of cement, sand, stone from other places in case using, this to build water stop Workload is very big and at high cost, operating expenses is higher.

Summary of the invention

The present invention provides a kind of loess pipe trench waterproof chemical slurry and preparation method thereof, can solve above-mentioned technical problem.

Specifically, including technical solution below:

On the one hand, a kind of loess pipe trench waterproof chemical slurry is provided, the chemical slurry passes through following weight percent The component of ratio is prepared:

Loess 65~70%, white lime 10~15%, waterglass and calcium chloride mixed liquor 3.5~5%, humic acid receive 2.5 ~4% and surplus water；

The quality proportioning of waterglass and calcium chloride is 4:1~5:1.

In a kind of possible design, the chemical slurry is prepared by following components in percentage by weight:

Loess 70%, white lime 10%, waterglass and calcium chloride mixed liquor 4%, humic acid receive the water of 3% and surplus；Its In, the quality proportioning of waterglass and calcium chloride is 4:1.

In a kind of possible design, the chemical slurry is prepared by following components in percentage by weight:

Loess 68%, white lime 15%, waterglass and calcium chloride mixed liquor 4%, humic acid receive the water of 3% and surplus；Its In, the quality proportioning of waterglass and calcium chloride is 5:1.

On the other hand, provide a kind of preparation method of loess pipe trench waterproof chemical slurry, the preparation method include with Lower step:

Step a, loess is added in blender, opens the blender；

Step b, Jiang Shui, waterglass and calcium chloride mixed liquor, humic acid are received sequentially adds in the blender with white lime；

Wherein, the weight percent of each component is respectively as follows:

Loess 65~70%, white lime 10~15%, waterglass and calcium chloride mixed liquor 3.5~5%, humic acid receive 2.5 ~4% and surplus water；

The quality proportioning of waterglass and calcium chloride is 4:1~5:1.

In a kind of possible design, in the step b, moisture is repeatedly added in blender.

In a kind of possible design, in the step b, blender is added in waterglass and calcium chloride mixed liquor several times In.

In a kind of possible design, in the step b, humic acid is received and is added in blender several times.

In a kind of possible design, in the step b, white lime is added in blender several times.

In a kind of possible design, the weight percent of each component is respectively as follows: loess 70%, white lime 10%, water glass Glass and calcium chloride mixed liquor 4%, humic acid receive the water of 3% and surplus；

Wherein, the quality proportioning of waterglass and calcium chloride is 4:1.

In a kind of possible design, the weight percent of each component is respectively as follows: loess 68%, white lime 15%, water glass Glass and calcium chloride mixed liquor 4%, humic acid receive the water of 3% and surplus；

Wherein, the quality proportioning of waterglass and calcium chloride is 5:1.

Technical solution provided in an embodiment of the present invention the utility model has the advantages that

The chemical slurry that the embodiment of the present invention is prepared by the collaboration compounding between said components, permeability is low, Hardening is fast, and used cost of material is low, and is easy to buy and transport, and can reduce the workload of construction personnel, reduce cost. Waterproof pit is built using the chemical slurry, the permeability of loess pipe trench soil layer can be reduced, effectively prevents Canal in Loess Area oil-gas pipeline The soil erosion of pipe trench, and will not corrosion pipeline erosion resistant coating.

Specific embodiment

To keep technical solution of the present invention and advantage clearer, embodiment of the present invention will be made below further detailed Thin description.Unless otherwise defined, all technical terms used in the embodiment of the present invention all have usual with those skilled in the art The identical meaning understood.

In a first aspect, the embodiment of the present invention provides a kind of loess pipe trench waterproof chemical slurry, the chemical slurry by with The component of lower weight percent is prepared:

Loess 65~70%, white lime 10~15%, waterglass and calcium chloride mixed liquor 3.5~5%, humic acid receive 2.5 ~4% and surplus water；

Wherein, the quality proportioning of waterglass and calcium chloride is 4:1~5:1.

It is understood that the soil near the pipe trench of loess area can be used in loess, can be taken at preparation scene；White lime Formula is Ca (OH)₂, waterglass is sodium metasilicate, chemical formula Na₂SiO₃·9H₂O, calcium chloride chemical formula are Cacl, sodium humate Chemical formula is C₉H₈Na₂O₄, white lime, waterglass, calcium chloride and sodium humate can be commercially available.

The working principle of loess pipe trench waterproof chemical slurry provided in an embodiment of the present invention are as follows:

1) waterglass is chemically reacted with calcium sulfate in loess, forms silicic acid gel, and silicic acid gel can be filled in loess Crack, provide the characteristic of hyposmosis for the chemical slurry that is formed of the present invention.

2) calcium chloride can accelerate the hydrolysis of waterglass (sodium metasilicate), promote silicic acid gel to be quickly generated, while waterglass (silicon Sour sodium) reacted with calcium chloride and generate a certain amount of calcium hydroxide, the dehydration gap of silicic acid gel can be filled, for the present invention provides compared with Strong water resistant and stability characteristic (quality) weakens collapsibility and permeability.

3) sodium humate has the function of dispersion, cohesion, peptization, can promote during the preparation process waterglass and loess it Between chemical reaction, and in use accelerate mud hardening.

4) with silicate mineral in loess chemical reaction generation calcium silicates and alumina silicate, calcium silicates and silicic acid occur for white lime Aluminium is a kind of good cementing material of water stability, has hydraulic cementing materials property, for the present invention provides higher intensity Characteristic.

In addition, white lime can greatly shorten the setting time of mud, proportioning test and digging in-situ verification result show The chemical slurry for lacking this component of white lime lasts no less than 60 days from half flow regime to complete curdled appearance, and adds The chemical slurry of this component of white lime, to last from half flow regime to complete curdled appearance can be shorter than 7 days.It is not complete for a long time Easily because of rainfall and rainwash slurry unstability or loss occur for the mud of all solidstate, and then are unable to reach satisfied chemical slurry Waterproof effect.White lime in chemical constituent provided in an embodiment of the present invention, can be by normal silicate under the conditions of material scarcity Cement substitution can equally play the role of providing strength characteristics for chemical slurry and shorten curing time.

The chemical slurry that the embodiment of the present invention is prepared by the collaboration compounding between said components, permeability are low, hard Change fastly, used cost of material is low, and is easy to buy and transport, and can reduce the workload of construction personnel, reduce cost.It adopts Waterproof pit is built with the chemical slurry, the permeability of loess pipe trench soil layer can be reduced, effectively prevents Canal in Loess Area Pipeline The soil erosion of ditch, and will not corrosion pipeline erosion resistant coating.

Wherein, the weight percent of the above components are as follows: loess can be with are as follows: 65%, 66%, 67%, 68%, 69%, 70% etc.；White lime can be with are as follows: 10%, 11%, 12%, 13%, 14%, 15% etc.；Waterglass and calcium chloride mixed liquor can be with Are as follows: 3.5%, 4%, 4.5%, 5% etc.；Sodium humate can be 2.5%, 3%, 3.5%, 4% etc.；Waterglass and calcium chloride are mixed Conjunction liquid quality proportioning is 4:1 or 5:1.By being as above arranged, to ensure each component synergistic effect, it is ensured that the reality of said effect It is existing.

In above-mentioned loess pipe trench waterproof chemical slurry, can be adjusted according to the use demand of different user loess and The proportion of water, to meet the needs of different mobility.

In addition, in the prior art, also generalling use backfilling of pipe canal soil and changing the seepage flow that the method filled out carrys out obstructing tube ditch-water, prevent Soil erosion needs pipeline all to excavate using this method, and to replace with low-permeability soil, project amount is larger.In contrast to this, it adopts Waterproof pit is built with loess pipe trench waterproof provided in an embodiment of the present invention with chemical slurry, the work of construction personnel can be greatly reduced Amount.

Second aspect, the embodiment of the invention also provides a kind of preparation methods of loess pipe trench waterproof chemical slurry, should Preparation method the following steps are included:

Step a, loess is added in blender, opens the blender；

Step b, Jiang Shui, waterglass and calcium chloride mixed liquor, humic acid are received sequentially adds in the blender with white lime；

Wherein, the weight percent of each component is respectively as follows:

Loess 65~70%, white lime 10~15%, waterglass and calcium chloride mixed liquor 3.5~5%, humic acid receive 2.5 ~4% and surplus water；

Wherein, the quality proportioning of waterglass and calcium chloride is 4:1~5:1.

It should be noted that in order to reach better effect, the addition sequence of said components had better not change.

The working principle of loess pipe trench waterproof chemical slurry provided in an embodiment of the present invention are as follows:

1) waterglass is chemically reacted with calcium sulfate in loess, forms silicic acid gel, and silicic acid gel can be filled in loess Crack, provide the characteristic of hyposmosis for the chemical slurry that is formed of the present invention.

2) calcium chloride can accelerate the hydrolysis of waterglass (sodium metasilicate), promote silicic acid gel to be quickly generated, while waterglass (silicon Sour sodium) reacted with calcium chloride and generate a certain amount of calcium hydroxide, the dehydration gap of silicic acid gel can be filled, for the present invention provides compared with Strong water resistant and stability characteristic (quality) weakens collapsibility and permeability.

3) sodium humate has the function of dispersion, cohesion, peptization, can promote during the preparation process waterglass and loess it Between chemical reaction, and in use accelerate mud hardening.

4) with silicate mineral in loess chemical reaction generation calcium silicates and alumina silicate, calcium silicates and silicic acid occur for white lime Aluminium is a kind of good cementing material of water stability, has hydraulic cementing materials property, for the present invention provides higher intensity Characteristic.

In addition, white lime can greatly shorten the setting time of mud, proportioning test and digging in-situ verification result show The chemical slurry for lacking this component of white lime lasts no less than 60 days from half flow regime to complete curdled appearance, and adds The chemical slurry of this component of white lime, to last from half flow regime to complete curdled appearance can be shorter than 7 days.It is not complete for a long time Easily because of rainfall and rainwash slurry unstability or loss occur for the mud of all solidstate, and then are unable to reach satisfied chemical slurry Waterproof effect.White lime in chemical constituent provided in an embodiment of the present invention, can be by normal silicate under the conditions of material scarcity Cement substitution can equally play the role of providing strength characteristics for chemical slurry and shorten curing time.

The preparation method of loess pipe trench waterproof chemical slurry provided in an embodiment of the present invention, simple process are convenient to carry out And application.And it is low by loess pipe trench waterproof chemical slurry permeability that said ratio is prepared, hardening is fast, used original Expect at low cost, and is easy to buy and transport, the workload of construction personnel can be reduced, reduce cost.It is repaired using the chemical slurry Waterproof pit is built, the permeability of loess pipe trench soil layer can be reduced, effectively prevents the soil erosion of Canal in Loess Area oil-gas pipeline pipe trench, and It will not corrosion pipeline erosion resistant coating.

In above-mentioned preparation method, loess used needs to be sieved, and the loess after sieving allows that there are certain coarse granules, but powder The loess accounting of last shape will reach 90% or more.When preparation, loess can be disposably put into, later on blender；Then successively Water, waterglass is added and calcium chloride mixed liquor, humic acid receive and white lime, is sufficiently stirred.

In order to make said components be uniformly mixed, illustratively, water, waterglass and calcium chloride mixed liquor, humic acid can be received and White lime is put into several times respectively.Mud hardens in order to prevent simultaneously, and mud prepared by blender cannot be shut down before use.

By the following specific examples further illustrate the invention: