53results about How to "Improve slope stability" patented technology

The invention discloses a stone side slope biological control method which comprises the following steps of (1) side slope status analysis and safety evaluation, (2) nursery stocks pre-cultivating, (3) bird nest type layout, (4) bionic nest building, (5) formula planting and (6) community forming. The stone side slope biological control method integrates the engineering mechanics, the ecology, the aesthetics, the biotechnology and other disciplines and fields, a stable and ecological three-dimensional side slope can be quickly formed, the landscape effect is good, the ecological benefit is lasting and stable, maintenance cost is low, maintenance difficulty is low, the slope fixing effect is obvious, a protection function is outstanding, and the method is used for side slope protection of roads, railways, dams and the like, and also can be used for ecological management of desertification and stony desertification.

The invention provides a spray seeding matrix and a preparation method thereof. In the spray seeding matrix provided by the invention, the soil, straw, adhesive and fertilizer are used as main raw materials which are doped with some of construction waste; and by adopting a combination of special dosage ratio, the obtained spray seeding matrix has high strength, the stability can be maintained for a long time, the fertilizer efficiency lasts long, the cost is low, and the greening effect can be effectively improved. By adding the spray seeding matrix into the construction waste, the slope stability can be effectively improved, the greening quality is increased, and the investment cost is lowered. The spray seeding matrix provided by the invention improves the problems such as relatively bad structure, relatively few granular structures and nutrient lack of the soil formed after the spray seeding of the traditional matrix and the problem of instability caused by adhesive failure. The indexes of the spray seeding matrix can reach the traditional matrix standard, wherein the early-stage growth condition of the plant, the plant biomass, the soil fertility, the erosion resistance and the like are all greatly improved. The preparation method of the spray seeding matrix provided by the invention is simple in technology, low in cost and suitable for large-scale production.

The invention provides a mining procedure of an inclined seam narrow and long strip mine, and belongs to the technical field of strip mine mining. In the mining process, the strip mine is divided into a first mining area and a second mining area, and the first mining area is firstly mined; work lines are longitudinally arranged in the first mining area in the early stage, the work line arrangement direction of lower steps is gradually regulated when upper steps reach the boundary, therefore, the L-shaped work line is adopted by the lower steps, and the length of the transverse mining work line of the lower steps is gradually increased until all the lower steps achieve transverse mining; when the first mining area approaches to a closed state, inclined mining starts to be conducted from the first mining area to the second mining area for transition; after transition is completed, a work line is arranged in a certain angle in the inclined direction and advanced in the strike direction, and inclined mining is conducted; when the upper portion of the second mining area is near the boundary, the advancing speed from the position near the boundary to the position on one side of the boundary is gradually increased, so that the length of the inclined mining work line is increased until the strip mine is closed. According to the mining procedure, the capital construction stripping volume of the strip mine can be decreased, stable internal discharging and steep slope mining are achieved, the production stripping ratio is balanced, and the economic benefits are increased.

The invention discloses a slope strengthening method based on plant urease reinforcing liquid. Grouting treatment is carried out on the interior of a slope through the plant urease reinforcing liquid,and spraying treatment is carried out on the surface layer of the slope. The plant urease reinforcing liquid is prepared from bean flour rich in urease, processing powder and water, and constituentsof the processing powder include urea and calcium salt, wherein the mass ratio of the bean powder to the processing powder is 1:1-1:2, and the mass ratio of the bean powder to the water is 1:10-1:20.The plant urease reinforcing liquid obtained by adding the water into the bean powder and the processing powder is fed into the slope and sprayed onto the surface of the slope, crystallization of calcite is promoted through carbonate generated in a urea hydrolysis reaction and the rising of ph in the reaction process, low-carbon and environment-friendly crystal matter high in strength and adhesivestrength is formed and is filled and adhered among soil particles of the slope, the soil strength can be remarkably improved, the effect that the slope is strengthened is achieved, and the overall stability of the slope is improved.

The invention discloses a protection method and a protection device for blocking deep cutting falling rocks. The protection method for blocking the deep cutting falling rocks includes the steps: excavating earth rocks for a plurality of longitudinally and uniformly arranged anchored pile bodies constructed on a falling rock bearing side of a cutting and supporting excavated hole walls; pouring anchored piles; excavating the cutting after the anchored piles achieve design strength; and mounting a breast board between each two adjacent anchored piles after the cutting is excavated and forming pile-sheet retaining walls by the breast boards and the anchored piles. In the protection method, the reinforced concrete anchored piles are firstly constructed on the falling rock bearing side of the deep cutting, a slope is closed by the aid of the reinforced concrete pile-sheet retaining walls formed by the anchored piles and the breast boards, accordingly, earth rock excavation engineering is decreased, slope stability is enhanced, and the capacity of bearing the impact force of perilous falling rocks is also enhanced. Therefore, by the protection method, the cutting can be supported and retained in deep excavation, the perilous falling rocks can be blocked, and the protection method has the advantages of high safety, economy, practicability and convenience in construction.

The invention provides a greening method for a high steep rock slope in a mining pit. The method includes the following steps of removing pumice stones; grouting cracks; conducting drilling, grouting and anchor lashing on the surface of the slope; carving grooves and drilling the bottoms of the grooves; building a water retaining wall along the lower edges of the grooves; a water-retaining agent is poured into holes, laying planting substrate for planting in the grooves, and watering and conserving plants; amending a drainage ditch on the footing of the surface of the slope, and building a reservoir in the bottom of the pit; planting bamboo willows along the outer edge of the steps of the slope of the mining pit. The greening method for the high steep rock slope in the mining pit has the advantages that the process is simple, the implementation is convenient, the overall greening cost is low, the normal mining operation on the bottom of the pit is not affected, the slope stability after greening is high, the vegetation coverage rate is 100% after one year, the later vegetation maintenance cost is low, and social and economic benefits are good.

The invention relates to a soil nail, a slope reinforcing structure and a construction method thereof, and belongs to the field of side slope engineering. According to the specific scheme, the soil nail comprises a core material, a grouting pipe, a separation bag and a plurality of lantern rings, the bottom end of the core material is fixedly provided with the separation bag in a sleeved mode, thelantern rings are fixed to the side wall of the core material, and the grouting pipe penetrates through the lantern rings to be inserted into the separation bag. The side slope reinforcing structurecomprises a concrete initial spraying layer, a plurality of soil nails, a plurality of end connection control components and a plurality of prefabricated connecting beams, the concrete initial spraying layer is arranged on the surface of a side slope body, the soil nails penetrate through the concrete initial spraying layer to be inserted into the side slope body, the top end of each soil nail isfixed through the corresponding end connection control component, and every two adjacent end connection control components are fixedly connected through the prefabricated connecting beams. According to the side slope reinforcing structure, the large-diameter reinforcing body soil nails are adopted, the number of the soil nails is reduced, meanwhile, the side slope stability is improved, thus the construction period is shortened, and the construction cost is reduced.

A multi-step revetment horizontal anchor bolt reinforcement and bottom revetment water drainage mixed structure is divided into a revetment horizontal anchor bolt reinforcement system and a bottom revetment water drainage system. The revetment horizontal anchor bolt reinforcement system is arranged on the upper half portion of a multi-step revetment. The bottom revetment water drainage system is arranged at the bottom of the multi-step revetment. The revetment between the road surface and the bottom surface of a roadbed is arranged in a stepped mode, and each revetment section on the upper half portion is reinforced through cement anchoring blocks and horizontal anchor bolts. The laying angle of the cement anchoring blocks is equal to the gradient of each revetment step on the road surface, and the bottoms of the cement anchoring blocks of each revetment step are embedded in the top of the next revetment step. The horizontal anchor bolts are arranged between the cement anchoring blocks and the surface of each revetment step, and the horizontal anchor bolts are arranged in layers and in parallel. The bottom revetment water drainage system and the revetment horizontal anchor bolt reinforcement system are arranged in a combined mode, the influence of ground drained water on the stability of the roadbed can be effectively lowered, and the multi-step revetment horizontal anchor bolt reinforcement and bottom revetment water drainage mixed structure is easy to construct and quite good in practicability.

The invention provides a green planting structure for a high-steep rocky slope. The structure comprises a planting groove, a water storage hole, a water-retaining wall, a buffer groove and a reinforcing rib, wherein the planting groove is vertical to the horizontal plane and extends in the direction parallel to the horizontal plane along the slope surface, the water storage hole is located at thebottom of the planting groove and is obtained by drilling downwards in the direction vertical to the horizontal plane at the bottom of the planting groove, the water-retaining wall is located on the lower edge of the planting groove and parallel to the planting groove, the buffer groove is located on the upper edge of the planting groove and parallel to the planting groove, and the reinforcing ribis located in the water-retaining wall, vertical to the horizontal plane and connected with the slope surface and the water-retaining wall. The process is simple and convenient to implement, the overall greening cost is low, normal mining work for the slope surface for mining work under the slope is not affected, slope stability is high after greening, the vegetation coverage rate after one yearis 100%, besides, the late vegetation maintenance cost is low, and the structure has better social benefits and economic benefits.

The invention provides a roadbed slope protection structure, and a manufacturing method and application thereof. The roadbed slope protection structure comprises a coconut fiber blanket, a metal net,a mixed substrate and a plurality of anchor rods, wherein the coconut fiber blanket is used for being fixed onto a roadbed slope; a support body is arranged between the coconut fiber blanket and the metal net, and is used for supporting the metal net and enabling the metal net and the coconut fiber blanket to form a preset distance; the plurality of anchor rods can be distributed on the roadbed slope at intervals; the first end of each anchor rod is inserted into a corresponding anchor hole of the roadbed slope, and the second end of each anchor rod sequentially passes through the coconut fiber blanket and the metal net and is connected with the metal net; and a gap between the coconut fiber blanket and the metal net is fully filled with the mixed substrate, and the mixed substrate extendsonto the metal net. The roadbed slope protection structure provided by the invention uses the coconut fiber blanket and a metal net for substrate spraying and seeding; two layers of anti-flushing protection can be effectively formed on the slope surface; the stability of the high-liquid-limit soil roadbed slope is further and favorably improved; and meanwhile, the improvement effect of the roadbed slope protection structure on the soil is very obvious.

The multi-level slope protection horizontal anchor reinforcement structure, the slope protection of the road surface is equipped with multi-level slope protection, and each slope protection section is reinforced with cement anchor blocks and horizontal anchor rods; there is a water guide system between each slope protection section; the laying angle of the cement anchor blocks and The grades of slope protection on the pavement have equal slopes; horizontal anchors are arranged between the cement anchor blocks and the slopes of slope protection at all levels; and the horizontal anchors are arranged parallel to each other. The drainage grooves of slope protection at all levels are set along the slope protection at all levels, and the slope of the drainage groove is equal to the slope of the slope protection at all levels; the drainage groove connects the road surface and the subgrade surface; the structure is sprayed with a cement mortar layer on the surface of the water guiding system It is used to prevent the outflow water from seeping into the roadbed, so as to ensure the service life and quality of the roadbed. The water guide system of the present invention is parallel to the cement anchor block and the transverse anchor bar of the graded slope protection, and can effectively reduce the influence of ground drainage on the stability of the roadbed. The structure is simple in construction and has very good practical performance.

The invention relates to a method and a device for delimiting a boundary of an outer dumping site of an open pit coal mine. The method comprises the following steps: acquiring position information of an open-pit mining boundary and position information of a village-society boundary; acquiring position information of a plurality of candidate areas around the open-pit mining boundary; according to the position information of the candidate area and the boundary of the open-pit mining boundary, determining the local boundary of the outer dumping site; according to the position information of the candidate area and the boundary of the village-society boundary, determining the remaining border boundaries of the outer dumping site; and comparing and selecting the plurality of outer dumping sites, and delimiting an optimal outer dumping site boundary according to a preset constraint condition. According to the scheme, the village-society boundary serves as the outer dumping site boundary, the village-society needing to be expropriated is reduced, the relocation compensation time is shortened, the land expropriation cost is reduced, and the economic benefits of enterprises are improved; by means of the mode that the inner dumping site and the outer dumping site are connected in time and press each other mutually, the capacity of the outer dumping site is increased, and the slope stability is improved.

The invention discloses a carbonaceous rock roadbed structure and a construction method thereof. The construction method comprises the steps that a rubble layer is laid on the upper portion of an original roadbed soil layer, a rubble layer, a carbonaceous rock layer, an improved composite soil roadbed and a pavement structure layer are sequentially laid on the rubble layer, and a modified composite anti-seepage curing agent is evenly sprayed to a roadbed slope; the bottom surface of the rubble layer is a slope inclined to the drainage side, and the top of the rubble layer is a step-shaped horizontal slope surface; the top surface of the rubble layer is higher than the water line and is a slope inclined to the drainage side; each layer of slope surface of the carbonaceous rock stratum is aslope inclining to the drainage side, and the top surface of the carbonaceous rock stratum is a horizontal slope surface; the carbonaceous rock roadbed structure further comprises a drainage system. Disintegration and softening of carbonaceous rock are inhibited through the modified composite anti-seepage curing agent layer, the improved composite soil roadbed, the gravel layer and the rubble layer, the waterproof performance is improved, the strength and stability of the roadbed are guaranteed, the quality of the roadbed is improved, meanwhile, the carbonaceous rock and other waste materialsare fully utilized, and the utilization rate of soil resources is increased.