A biomass material bolt and its preparation method

Abstract

A biomass material bolt and its preparation method belong to the technical field of agricultural waste recycling. In order to produce bolts with low production cost and environmental friendliness, in the present invention, crop straw is dried, placed in a crusher for crushing, and then subjected to screening treatment to obtain straw crushed material with a particle size of less than 5 mm. Weigh 90-95 parts of the straw crushed material, 3-8 parts of polylactic acid, 0.05-2 parts of biological enzyme, 2-7 parts of loess powder, and 15-30 parts of water respectively by weight, mix them evenly to obtain a slightly moist mixture, place it in a compressor, press it into a rod body of a certain specification, wind the obtained rod body with hemp rope, and then place it in a dryer for drying to obtain the biomass material bolt. The biomass material bolt prepared by the present invention has excellent eco-friendly performance on the basis of stable performance, improves the safety during the bolt construction process, and can be applied to the reinforcement of erosion ditches in black soil and the anchoring of both sides of coal mine coal seam roadways.

Description

Technical Field

[0001] The present invention belongs to the technical field of agricultural waste recycling; specifically, it relates to a biomass material anchor rod and a preparation method thereof. Background Art

[0002] A slope refers to a slope with a certain gradient made on both sides of a roadbed to ensure the stability of the roadbed, such as a highway cutting slope, a highway subgrade slope, a bank embankment, or an earth dam. Generally, these slopes are usually formed by piling up clay, sand, or silt. However, due to external environments such as filling, earthquake, rainfall, and seepage, the slope may become unstable, resulting in adverse consequences. At the lightest, it may interrupt transportation, and at the heaviest, it may cause serious disasters such as landslides and dike breaches, thus causing huge losses.

[0003] An anchor rod is a rod-shaped object made of a material with a certain strength. It is driven into a pre-drilled hole in the surface rock mass or slope. By using the special structures of its head and rod body and relying on the bonding effect, the surrounding rock is combined with the stable rock mass to produce a suspension effect, a combined beam effect, and a reinforcement effect, so as to achieve the purpose of support. It has the advantages of low cost, good support effect, simple operation, flexible use, and less occupation of construction clearance. Currently, the commonly used anchor rods are wooden anchor rods or metal anchor rods. Wooden anchor rods are prone to corrosion, metal anchor rods are not environmentally friendly, they damage the components in the soil near the anchor rod, and the cost is too high. Summary of the Invention

[0004] The purpose of the present invention is to provide a biomass material anchor rod with low cost and environmental friendliness and a preparation method thereof.

[0005] The present invention is realized through the following technical solutions:

[0006] A preparation method of a biomass material anchor rod includes the following steps:

[0007] Step 1: After drying the crop straw, place it in a crusher for crushing, and then perform screening treatment to obtain a straw crushed material with a material particle size less than 5 mm for later use;

[0008] Step 2: Weigh a certain mass of straw crushed material, polylactic acid, bio-enzyme, loess powder, and water according to weight parts. The weight parts are 90 - 95 parts of straw crushed material, 3 - 8 parts of polylactic acid, 0.05 - 2 parts of bio-enzyme, 2 - 7 parts of loess powder, and 15 - 30 parts of water. After mixing evenly, obtain a slightly moist mixture for later use;

[0009] Step 3: Place the slightly moist mixture obtained in Step 2 in a compressor and press it into a rod body of a certain specification;

[0010] Step 4: Wind a hemp rope around the rod body obtained in Step 3, and then place it in a dryer for drying to obtain a biomass material anchor rod.

[0011] Further, the particle size of the straw crushed material in step 1 is 0.1 - 5 mm.

[0012] Further, the polylactic acid used in step 2 is BR - grade polylactic acid, the bio - enzyme is BR - grade bio - enzyme, and the particle size of the loess powder is 200 mesh.

[0013] Further, in step 2, the weight fraction of the straw crushed material is 90 parts, the weight fraction of the polylactic acid is 5 parts, the weight fraction of the bio - enzyme is 1 part, the weight fraction of the loess powder is 4 parts, and the weight fraction of water is 20 parts.

[0014] Further, in step 2, the weight fraction of the straw crushed material is 95 parts, the weight fraction of the polylactic acid is 8 parts, the weight fraction of the bio - enzyme is 2 parts, the weight fraction of the loess powder is 7 parts, and the weight fraction of water is 25 parts.

[0015] Further, the specification of the rod body obtained in step 3 is that the diameter is 20 - 100 mm and the length of the rod body is 1000 - 2000 mm.

[0016] Further, the diameter of the hemp rope used in step 4 is 0.5 mm.

[0017] Further, the drying temperature of the dryer in step 4 is 260 - 300 °C.

[0018] A biomass material bolt depends on the above - mentioned preparation method of the biomass material bolt. The compressive strength of the biomass material bolt is 40 - 50 MPa.

[0019] The biomass material bolt described in the present invention is a method of using crushed crop straw as the main raw material and mixing it with eco - friendly ingredients to prepare a biomass material bolt with certain strength. Compared with the prior art, the bolt rod body of the present invention belongs to a biomass material, is prepared from raw materials with specific content components, realizes good overall interaction, has excellent eco - friendly performance on the basis of stable performance of each item, improves the safety during the bolt construction process, and can be applied to the reinforcement of erosion ditches in black soil and the anchoring of both sides of coal mine coal seam roadways.

[0020] The biomass material bolt described in the present invention realizes the high - value utilization of crop straw, has prominent carbon reduction effect in the process technology, promotes the green upgrading of traditional bolt manufacturing, solves the problem of high - carbon energy consumption during the preparation of the bolt rod body, and drives the development of clean production technology processes and advanced and applicable environmental protection treatment equipment. Specific Embodiments Specific Embodiment One:

[0022] A preparation method of a biomass material bolt includes the following steps:

[0023] Step 1: After drying the crop straw, place it in a crusher for crushing, and then perform screening to obtain straw crushed material with a particle size of less than 5 mm for later use;

[0024] Step 2: Weigh a certain mass of straw crushed material, polylactic acid, bio-enzyme, loess powder, and water according to parts by weight. The parts by weight are 90 - 95 parts of straw crushed material, 3 - 8 parts of polylactic acid, 0.05 - 2 parts of bio-enzyme, 2 - 7 parts of loess powder, and 15 - 30 parts of water. After mixing evenly, obtain a slightly moist mixture for later use;

[0025] Step 3: Place the slightly moist mixture obtained in Step 2 in a compressor and press it into a rod of a certain specification;

[0026] Step 4: Wind hemp rope around the rod obtained in Step 3, and then place it in a dryer for drying to obtain a biomass material bolt.

[0027] For the preparation method of a biomass material bolt according to this embodiment, the particle size of the straw crushed material in Step 1 is 0.1 - 5 mm.

[0028] For the preparation method of a biomass material bolt according to this embodiment, the polylactic acid used in Step 2 is BR - grade polylactic acid, the bio-enzyme is BR - grade bio-enzyme, and the particle size of the loess powder is 200 mesh.

[0029] For the preparation method of a biomass material bolt according to this embodiment, the parts by weight of the straw crushed material in Step 2 are 90 parts, the parts by weight of the polylactic acid are 5 parts, the parts by weight of the bio-enzyme are 1 part, the parts by weight of the loess powder are 4 parts, and the parts by weight of the water are 20 parts.

[0030] For the preparation method of a biomass material bolt according to this embodiment, the specification of the rod obtained in Step 3 is a diameter of 50 mm and a length of 1000 mm.

[0031] For the preparation method of a biomass material bolt according to this embodiment, the diameter of the hemp rope used in Step 4 is 0.5 mm.

[0032] For the preparation method of a biomass material bolt according to this embodiment, the drying temperature of the dryer in Step 4 is 280 °C.

[0033] For a biomass material bolt prepared by the preparation method of a biomass material bolt according to this embodiment, the compressive strength of the biomass material bolt is 45 MPa. Specific Embodiment 2:

[0035] A preparation method of a biomass material bolt, comprising the following steps:

[0036] Step 1: After drying the crop straw, place it in a crusher for crushing, and then perform screening to obtain a straw crushed material with a particle size of less than 5 mm for later use;

[0037] Step 2: Weigh a certain mass of straw crushed material, polylactic acid, bio-enzyme, loess powder, and water according to weight parts. The weight parts are 90 - 95 parts of straw crushed material, 3 - 8 parts of polylactic acid, 0.05 - 2 parts of bio-enzyme, 2 - 7 parts of loess powder, and 15 - 30 parts of water. After mixing evenly, obtain a slightly moist mixture for later use;

[0038] Step 3: Place the slightly moist mixture obtained in Step 2 into a compressor and press it into a rod body of a certain specification;

[0039] Step 4: Wind hemp rope around the rod body obtained in Step 3, and then place it in a dryer for drying to obtain a biomass material anchor bolt.

[0040] For the preparation method of a biomass material anchor bolt according to this embodiment, the particle size of the straw crushed material in Step 1 is 0.1 - 5 mm.

[0041] For the preparation method of a biomass material anchor bolt according to this embodiment, the polylactic acid used in Step 2 is BR-grade polylactic acid, the bio-enzyme is BR-grade bio-enzyme, and the particle size of the loess powder is 200 mesh.

[0042] For the preparation method of a biomass material anchor bolt according to this embodiment, the weight parts of the straw crushed material in Step 2 are 90 parts, the weight parts of the polylactic acid are 5 parts, the weight parts of the bio-enzyme are 1 part, the weight parts of the loess powder are 4 parts, and the weight parts of the water are 20 parts.

[0043] For the preparation method of a biomass material anchor bolt according to this embodiment, the specification of the rod body obtained in Step 3 is a diameter of 100 mm and a length of 2000 mm.

[0044] For the preparation method of a biomass material anchor bolt according to this embodiment, the diameter of the hemp rope used in Step 4 is 0.5 mm.

[0045] For the preparation method of a biomass material anchor bolt according to this embodiment, the drying temperature of the dryer in Step 4 is 300 °C.

[0046] For a biomass material anchor bolt prepared by the preparation method of a biomass material anchor bolt according to this embodiment, the compressive strength of the biomass material anchor bolt is 50 MPa. Specific Embodiment Three:

[0048] A preparation method of a biomass material anchor bolt includes the following steps:

[0049] Step 1: After drying the crop straw, place it in a crusher for crushing, and then perform screening treatment to obtain straw crushed material with a particle size of less than 5 mm for standby;

[0050] Step 2: Weigh a certain mass of straw crushed material, polylactic acid, bioenzyme, loess powder, and water according to weight parts. The weight parts are 90 - 95 parts of straw crushed material, 3 - 8 parts of polylactic acid, 0.05 - 2 parts of bioenzyme, 2 - 7 parts of loess powder, and 15 - 30 parts of water. After mixing evenly, obtain a slightly moist mixture for standby;

[0051] Step 3: Place the slightly moist mixture obtained in Step 2 into a compressor and press it into a rod body of a certain specification;

[0052] Step 4: Wind hemp rope around the rod body obtained in Step 3, and then place it in a dryer for drying to obtain a biomass material anchor bolt.

[0053] For the preparation method of a biomass material anchor bolt described in this embodiment, the particle size of the straw crushed material in Step 1 is 4 - 5 mm.

[0054] For the preparation method of a biomass material anchor bolt described in this embodiment, the polylactic acid used in Step 2 is BR - grade polylactic acid, the bioenzyme is BR - grade bioenzyme, and the particle size of the loess powder is 200 mesh.

[0055] For the preparation method of a biomass material anchor bolt described in this embodiment, the weight parts of the straw crushed material in Step 2 are 95 parts, the weight parts of the polylactic acid are 8 parts, the weight parts of the bioenzyme are 2 parts, the weight parts of the loess powder are 7 parts, and the weight parts of the water are 25 parts.

[0056] For the preparation method of a biomass material anchor bolt described in this embodiment, the specification of the rod body obtained in Step 3 is a diameter of 100 mm and a length of 1000 mm.

[0057] For the preparation method of a biomass material anchor bolt described in this embodiment, the diameter of the hemp rope used in Step 4 is 0.5 mm.

[0058] For the preparation method of a biomass material anchor bolt described in this embodiment, the drying temperature of the dryer in Step 4 is 270 °C.

[0059] For a biomass material anchor bolt prepared by the preparation method of a biomass material anchor bolt described in this embodiment, the compressive strength of the biomass material anchor bolt is 40 MPa. Specific Embodiment Four:

[0061] A preparation method of a biomass material anchor bolt includes the following steps:

[0062] Step 1: After drying the crop straw, place it in a crusher for crushing, and then perform screening to obtain a straw crushing material with a particle size of less than 5 mm for later use;

[0063] Step 2: Weigh a certain mass of straw crushing material, polylactic acid, bio-enzyme, loess powder, and water according to parts by weight. The parts by weight are 90 - 95 parts of straw crushing material, 3 - 8 parts of polylactic acid, 0.05 - 2 parts of bio-enzyme, 2 - 7 parts of loess powder, and 15 - 30 parts of water. Mix them evenly to obtain a slightly moist mixture for later use;

[0064] Step 3: Place the slightly moist mixture obtained in Step 2 into a compressor and press it into a rod of a certain specification;

[0065] Step 4: Wind hemp rope around the rod obtained in Step 3, and then place it in a dryer for drying to obtain a biomass material anchor bolt.

[0066] In the preparation method of a biomass material anchor bolt according to this embodiment, the particle size of the straw crushing material in Step 1 is 0.1 - 5 mm.

[0067] In the preparation method of a biomass material anchor bolt according to this embodiment, the polylactic acid used in Step 2 is BR-grade polylactic acid, the bio-enzyme is BR-grade bio-enzyme, and the particle size of the loess powder is 200 mesh.

[0068] In the preparation method of a biomass material anchor bolt according to this embodiment, the specification of the rod obtained in Step 3 is a diameter of 20 mm and a length of 1000 mm.

[0069] In the preparation method of a biomass material anchor bolt according to this embodiment, the diameter of the hemp rope used in Step 4 is 0.5 mm.

[0070] In the preparation method of a biomass material anchor bolt according to this embodiment, the drying temperature of the dryer in Step 4 is 280 °C.

[0071] For a biomass material anchor bolt prepared by the preparation method of a biomass material anchor bolt according to this embodiment, the compressive strength of the biomass material anchor bolt is 40 - 50 MPa. Specific Embodiment Five:

[0073] A preparation method of a biomass material anchor bolt includes the following steps:

[0074] Step 1: After drying the crop straw, place it in a crusher for crushing, and then perform screening to obtain a straw crushing material with a particle size of less than 5 mm for later use;

[0075] Step 2: Weigh a certain mass of straw crushed material, polylactic acid, bio-enzyme, loess powder, and water according to parts by weight. The parts by weight are 90 - 95 parts of straw crushed material, 3 - 8 parts of polylactic acid, 0.05 - 2 parts of bio-enzyme, 2 - 7 parts of loess powder, and 15 - 30 parts of water. After mixing evenly, a slightly moist mixture is obtained for later use;

[0076] Step 3: Place the slightly moist mixture obtained in Step 2 into a compressor and press it into a rod body of a certain specification;

[0077] Step 4: Wind hemp rope around the rod body obtained in Step 3, and then place it in a dryer for drying to obtain a biomass material bolt.

[0078] For the preparation method of a biomass material bolt described in this embodiment, the particle size of the straw crushed material in Step 1 is 5 - 8 mm.

[0079] For the preparation method of a biomass material bolt described in this embodiment, the polylactic acid used in Step 2 is BR-grade polylactic acid, the bio-enzyme is BR-grade bio-enzyme, and the particle size of the loess powder is 200 mesh.

[0080] For the preparation method of a biomass material bolt described in this embodiment, the parts by weight of the straw crushed material in Step 2 are 95 parts, the parts by weight of the polylactic acid are 8 parts, the parts by weight of the bio-enzyme are 2 parts, the parts by weight of the loess powder are 7 parts, and the parts by weight of the water are 25 parts.

[0081] For the preparation method of a biomass material bolt described in this embodiment, the specification of the rod body obtained in Step 3 is a diameter of 100 mm and a length of 2000 mm.

[0082] For the preparation method of a biomass material bolt described in this embodiment, the diameter of the hemp rope used in Step 4 is 0.5 mm.

[0083] For the preparation method of a biomass material bolt described in this embodiment, the drying temperature of the dryer in Step 4 is 300 °C.

[0084] For a biomass material bolt prepared by the preparation method of a biomass material bolt described in this embodiment, the compressive strength of the biomass material bolt is 42 MPa.

[0085] Comparative Example 1:

[0086] A preparation method of a biomass material bolt, comprising the following steps:

[0087] Step 1: After drying the crop straw, place it in a crusher for crushing, and then conduct screening treatment to obtain a straw crushed material with a material particle size less than 5 mm for later use;

[0088] Step 2: Weigh a certain mass of straw crushed material, polylactic acid, bio-enzyme, and water according to parts by weight. The parts by weight are 90 - 95 parts of straw crushed material, 3 - 8 parts of polylactic acid, 0.05 - 2 parts of bio-enzyme, and 15 - 30 parts of water. After mixing evenly, a slightly moist mixture is obtained for later use.

[0089] Step 3: Place the slightly moist mixture obtained in Step 2 into a compressor and press it into a rod of a certain specification.

[0090] Step 4: Wind a hemp rope around the rod obtained in Step 3, and then place it in a dryer for drying to obtain a biomass material bolt.

[0091] For the preparation method of a biomass material bolt described in the comparative example, the particle size of the straw crushed material in Step 1 is 1 - 2 mm.

[0092] For the preparation method of a biomass material bolt described in the comparative example, the polylactic acid used in Step 2 is BR-grade polylactic acid, and the bio-enzyme is BR-grade bio-enzyme.

[0093] For the preparation method of a biomass material bolt described in the comparative example, the parts by weight of the straw crushed material in Step 2 are 90 parts, the parts by weight of the polylactic acid are 5 parts, the parts by weight of the bio-enzyme are 1 part, and the parts by weight of the water are 20 parts.

[0094] For the preparation method of a biomass material bolt described in the comparative example, the specification of the rod obtained in Step 3 is a diameter of 50 mm and a length of 1000 mm.

[0095] For the preparation method of a biomass material bolt described in the comparative example, the diameter of the hemp rope used in Step 4 is 0.5 mm.

[0096] For the preparation method of a biomass material bolt described in the comparative example, the drying temperature of the dryer in Step 4 is 280 °C.

[0097] For a biomass material bolt prepared by the preparation method of a biomass material bolt described in the comparative example, the compressive strength of the biomass material bolt is 35 - 40 MPa.

Claims

1. A preparation method of a biomass material bolt, characterized in that, It includes the following steps: Step 1: After drying the crop straw, place it in a crusher for crushing, and then perform screening treatment to obtain straw crushed material with a material particle size less than 5 mm for standby; Step 2: Weigh a certain mass of straw crushed material, polylactic acid, bioenzyme, loess powder, and water according to weight parts. The weight parts are 90-95 parts of straw crushed material, 3-8 parts of polylactic acid, 0.05-2 parts of bioenzyme, 2-7 parts of loess powder, and 15-30 parts of water. After mixing evenly, obtain a slightly moist mixture for standby; The polylactic acid used in Step 2 is BR-grade polylactic acid, the bioenzyme is BR-grade bioenzyme, and the particle size of the loess powder is 200 mesh; Step 3: Place the slightly moist mixture obtained in Step 2 in a compressor and press it into a rod body of a certain specification; The specification of the rod body obtained in Step 3 is that the diameter is 20-100 mm and the length of the rod body is 1000-2000 mm; Step 4: Wind a hemp rope around the rod body obtained in Step 3, and then place it in a dryer for drying to obtain a biomass material anchor bolt; The diameter of the hemp rope used in Step 4 is 0.5 mm.

2. The preparation method of a biomass material anchor rod according to claim 1, characterized in that, The particle size of the straw crushed material in Step 1 is 0.1-5 mm.

3. The preparation method of a biomass material anchor rod according to claim 2, characterized in that, In Step 2, the weight part of the straw crushed material is 90 parts, the weight part of the polylactic acid is 5 parts, the weight part of the bioenzyme is 1 part, the weight part of the loess powder is 4 parts, and the weight part of the water is 20 parts.

4. The preparation method of a biomass material anchor rod according to claim 3, characterized in that, In Step 2, the weight part of the straw crushed material is 95 parts, the weight part of the polylactic acid is 8 parts, the weight part of the bioenzyme is 2 parts, the weight part of the loess powder is 7 parts, and the weight part of the water is 25 parts.

5. The preparation method of a biomass material anchor rod according to claim 4, characterized in that, In Step 4, the drying temperature of the dryer is 260-300 °C.

6. A biomass material bolt, realized based on the preparation method of a biomass material bolt described in any one of claims 1-5, characterized in that, The compressive strength of the biomass material anchor bolt is 40-50 MPa.