Method for measuring thickness degree of sea sand by adopting thickness index
An index and roughness technology, which is applied in the field of measuring the thickness of sea sand by using the roughness index, can solve the confusion of important parameters such as sand content, mud content, and sea sand resource reserves, and the boundary of sand and mud particle sizes cannot be unified. In order to reduce the test workload, save time and economic cost, and achieve the effect of strong practicability by solving problems such as different particle size division methods
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0079] This embodiment includes establishing a roughness index, establishing a sea sand thickness specification classification method based on the roughness index, calculating the roughness index according to the particle size analysis data, and determining the specification according to the roughness index.
[0080] details as follows:
[0081] (S1) Establish a roughness index (Ce)
[0082] The particle size classification adopts the Udden-Wentworth (Udden-Wentworth) equivalent granulation grade standard with a common ratio of 2. The particle size boundary of sand and mud is 0.063mm, and the order of sieve holes from small to large is: D0=0.063mm , D1=0.125mm, D2=0.25mm, D3=0.5mm, D4=1mm, D5=2mm, D6=4mm, D7=8mm...
[0083] The geometric mean particle size of each particle size classification is M0, M1, M2... (M0 is the geometric mean particle size of 0.063~0.125mm classification, M1 is the geometric mean particle size of 0.125~0.25mm classification, M2 is 0.25~0.5mm classifi...
Embodiment 2
[0136] Steps (S1) to (S3) of this embodiment are the same as in Example 1. In order to verify the validity of the method for measuring the thickness of sea sand by using the roughness index proposed by the present invention, 30 sea sand samples in my country's coastal waters were analyzed for particle size, based on The particle size analysis data was calculated according to the formula (6), and the fineness modulus analysis was carried out at the same time (Table 6). According to the fineness modulus and roughness index, the specifications of the 30 sea sand samples were judged respectively (Table 7). The results showed that the thickness of the sea sand can be measured based on the roughness index, and it is consistent with the judgment result of the fineness modulus. It has good consistency. At the same time, extra-coarse category is added, which solves the problem that sea sand with fineness modulus > 3.7 has no category.
[0137] Table 6 The particle size analysis, finenes...
Embodiment 3
[0143] The difference from Example 1-2 is that the sea sand sample to be tested is the finished sea sand without mud, and the roughness index is calculated by formula (5). class.
[0144] Therefore, in the method for measuring the thickness degree of sea sand by using the roughness index, it is feasible and effective to adopt the thickness index (Ce) to measure the thickness degree of the sea sand, compared with the fineness modulus (Mx), it has obvious Advantage. One is to unify the particle size boundary of sand and mud to 0.063mm, which is consistent with the marine survey specifications and avoid confusion; the other is to avoid doing particle analysis twice, which significantly reduces the test workload, improves work efficiency, and saves time and economic costs; The extra-coarse category is added to the classification of sea sand based on the roughness index to ensure that extremely coarse sand can be categorized; fourth, compared with the fineness modulus, only one de...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More